Polishing device for safety shoe production

Abstract

The utility model discloses a safety shoe production polishing device which comprises a rack, the rack is provided with a polishing device, the rack is provided with a polishing wheel, the polishing wheel is provided with a quick-change device, the quick-change device comprises a quick-change sleeve, a release sleeve, a quick-change groove, a quick-change rod, a release groove, a quick-change block and a matching groove, the release sleeve is installed on the outer side of the quick-change sleeve, and the quick-change rod is installed on the outer side of the quick-change sleeve. The quick-change groove is formed in the outer side of the quick-change rod, the release groove is formed in the inner side of the release sleeve, one part of the quick-change block penetrates through the matching groove to be clamped into the quick-change groove, the matching groove is formed in the side wall of the quick-change sleeve, and a locking mechanism is installed on the outer side of the quick-change sleeve and comprises a control plate, a longitudinal plate, a control groove, a limiting sleeve, a round block, a limiting spring, a limiting block and a transverse plate. The control groove is formed in the control plate, the round block is installed on the outer side of the quick-change sleeve, the limiting spring is connected with the limiting block, and the transverse plate is installed on one side of the longitudinal plate. The polishing device solves the problems that a traditional polishing device is low in manual efficiency, complex in polishing wheel replacement and unstable in polishing wheel installation.

Description

Technical Field

[0001] This utility model relates to the field of workwear polishing technology, and more specifically, to a workwear production polishing device. Background Technology

[0002] In the modern production and manufacturing of safety shoes, the polishing process is a key link in product quality control. Its processing efficiency and polishing quality directly affect the appearance quality and production efficiency of safety shoes. However, the current safety shoe polishing equipment on the market has significant technical defects in terms of practicality and reliability. These problems not only affect production efficiency, but may also endanger product quality and operational safety.

[0003] The primary problem is the low efficiency of manual polishing. Existing technologies generally suffer from outdated production methods: First, traditional polishing processes rely mainly on manual operation, requiring workers to maintain a fixed posture for extended periods of time for repetitive labor; second, manual polishing not only consumes a large amount of human resources but also easily causes physical fatigue among workers; third, the polishing quality obtained manually is difficult to maintain consistently, often resulting in uneven polishing; furthermore, the manual polishing process is time-consuming, severely hindering the improvement of production efficiency; finally, long-term manual polishing work may also lead to occupational diseases among workers, affecting their health.

[0004] Secondly, the polishing wheel replacement is inconvenient, and the operation of the fixing device presents significant technical obstacles: First, the traditional polishing wheel installation method requires cumbersome disassembly and assembly steps, increasing replacement time; second, the replacement process of polishing wheels of different specifications often requires the assistance of specialized tools, making the operation complex; third, in actual production, polishing wheels of different grit numbers or outer diameters are frequently required to be replaced according to the polishing requirements of different products, and the complex replacement process seriously affects the production rhythm; in addition, the use of tools and the disassembly and assembly of parts not only consume time but also increase the risk of misoperation; finally, this inconvenient design significantly reduces the practicality and production efficiency of the equipment.

[0005] The most serious problem is the instability of the fixing structure. Although some improved products have achieved quick replacement, they suffer from serious defects in structural reliability: First, the simplified quick-fixing structure is prone to loosening when the polishing wheel rotates at high speed; second, the continuous vibration generated during polishing gradually weakens the fastening effect of the fixing structure; third, prolonged polishing operations subject the fixing device to repeated impacts and vibrations, exacerbating the problem of structural loosening; in addition, once the fixing device becomes loose, it will not only affect the polishing quality but may also cause the polishing wheel to shift in the installation position; finally, if the fixing structure fails completely, the polishing wheel may fall off, posing a serious safety hazard. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, this utility model provides a polishing device for the production of safety shoes, so as to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a polishing device for producing safety shoes, comprising a frame, a polishing device mounted on the frame, a polishing wheel mounted on the frame, and a quick-change device mounted on the polishing wheel. The quick-change device includes a quick-change sleeve, a release sleeve, a quick-change groove, a quick-change rod, a release groove, a quick-change block, and a mating groove. The quick-change sleeve is detachably fitted onto the outside of the quick-change rod, the release sleeve is rotatably mounted on the outside of the quick-change sleeve, the quick-change groove is located on the outside of the quick-change rod, the release groove is located on the inside of the release sleeve, and a portion of the quick-change block passes through the mating groove and engages with the quick-change groove. The aforementioned mating groove is formed on the side wall of the quick-change sleeve. A locking mechanism is installed on the outer side of the quick-change sleeve. The locking mechanism includes a control plate, a longitudinal plate, a control groove, a limiting sleeve, round blocks, a limiting spring, a limiting block, and a horizontal plate. The control plate is rotatably mounted on the outer side of the quick-change sleeve. The longitudinal plate is fixedly connected to one side of the limiting sleeve. The control groove is formed on the control plate. The limiting sleeve is slidably fitted on the outer side of the quick-change sleeve. Multiple round blocks are fixedly mounted on the outer side of the quick-change sleeve. The two ends of the limiting spring are respectively connected to two adjacent limiting blocks. Multiple limiting blocks are movably arranged on one side of the release sleeve. Three horizontal plates are fixedly mounted on one side of the longitudinal plate.

[0010] The present invention is further configured such that the polishing device includes a motor, a sprocket, a chain, a drive shaft, and a drive block. The motor is detachably mounted inside the frame, the sprocket is detachably mounted at the bottom end of the drive shaft, the top end of the drive shaft passes through the top end of the frame and is connected to the drive block, the chain is sleeved on the outside of the sprocket, the polishing wheel is detachably mounted on the outside of the drive block, the quick-change rod is fixedly connected to the top end of the drive block, and the output end of the motor is connected to the bottom end of one of the drive shafts.

[0011] The present invention is further configured such that a cylinder is detachably provided at the top of the frame, a piston rod is connected to the output end of the cylinder, and a push block is connected to the other end of the piston rod.

[0012] The present invention is further configured such that a thrust bearing is detachably provided on one side of the control board, a support spring is connected to one side of the thrust bearing, and the other end of the support spring is connected to the limiting sleeve.

[0013] The present invention is further configured such that a plurality of limiting rails are connected to one side of the release sleeve, and a limiting groove is provided on one side of the limiting block. The limiting groove is adapted to the limiting rails to ensure the precise displacement of the limiting block.

[0014] The present invention is further configured such that a limiting wheel is rotatably provided on one side of the limiting block, and the limiting wheel engages between two corresponding circular blocks, making the operation smoother.

[0015] The present invention is further configured such that a connecting shaft is provided in the release groove, and one side of the quick-change block is rotatably disposed in the release groove via the connecting shaft.

[0016] The present invention is further configured such that a plurality of push springs are movably provided in the release groove, the push springs are connected to one side of the quick-change block, and the other end of the push springs is in abutting relationship with the inner wall of the release groove.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a polishing device for the production of safety shoes, which has the following beneficial effects:

[0019] 1. The polishing device, through the ingenious coordination of a motor, sprocket, chain, drive shaft, and transmission block, constructs a highly efficient and automated polishing system. The motor, as the power source, drives the drive shaft to rotate, and the transmission mechanism of the sprocket and chain achieves synchronous operation of the two shafts, thereby driving the transmission block and polishing wheel to rotate stably. At the same time, the cylinder, through the cooperation of the piston rod and the push block, realizes the automatic feeding of the workpiece, completely eliminating the limitations of traditional manual polishing. This innovative automated polishing structure not only significantly improves processing efficiency but also ensures the consistency of polishing quality through mechanized operation, effectively solving the problems of time-consuming, labor-intensive, and unstable quality of manual polishing. The design of this device reduces the labor intensity of workers and improves production efficiency, making it particularly suitable for mass production needs and providing a highly efficient and reliable polishing solution for safety shoe manufacturers.

[0020] 2. The quick-change device, through the precise cooperation of the quick-change sleeve, release sleeve, quick-change groove, quick-change rod, release groove, quick-change block, and mating groove, forms a convenient and efficient polishing wheel replacement system. The detachable design of the quick-change sleeve and quick-change rod ensures the flexibility of the replacement operation. The rotating structure of the release sleeve, combined with the guiding function of the release groove, provides reliable operation guidance. This innovative quick-change structure enables the rapid installation and removal of the polishing wheel simply by rotating the release sleeve, completely eliminating the limitation of traditional replacement methods that require professional tools. The cooperation between the quick-change block and the quick-change groove ensures a basic connection. This device not only significantly improves the efficiency of polishing wheel replacement but also reduces the difficulty of replacement through simple operation, providing operators with a convenient and efficient replacement solution.

[0021] 3. The locking mechanism, through the coordinated operation of the control plate, longitudinal plate, control groove, limiting sleeve, circular block, limiting spring, limiting block, and horizontal plate, constructs a multi-layered, stable locking system. The sliding design of the limiting sleeve and the elastic support of the support spring provide initial fixation. The control plate, in cooperation with the thrust bearing, achieves smooth rotation control. The precise cooperation between the limiting groove on the limiting block and the limiting rail, along with the locking and fixing between the limiting wheel and the circular block, forms a multi-layered locking mechanism. This innovative locking structure not only ensures automatic locking of the structure through the elastic action of the limiting spring but also prevents accidental loosening through the design of the push spring, completely solving the problem of insufficient stability in traditional quick-connect structures. Even under conditions of high-speed rotation and continuous vibration of the polishing wheel, this mechanism can maintain the stability of the connection structure, ensuring the safety and reliability of the polishing operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a polishing device for producing safety shoes according to this utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure from a second perspective in this utility model;

[0024] Figure 3 This is a schematic diagram of the dispersed structure of the polishing wheel and quick-change sleeve in this utility model;

[0025] Figure 4 This is a schematic diagram of the dispersed structure of the quick-change device and locking mechanism in this utility model;

[0026] Figure 5 This is a cross-sectional structural diagram of the quick-change device and locking mechanism in this utility model.

[0027] In the diagram: 1. Frame; 2. Polishing wheel; 3. Quick-change sleeve; 4. Release sleeve; 5. Quick-change groove; 6. Quick-change rod; 7. Release groove; 8. Quick-change block; 9. Mating groove; 10. Control board; 11. Longitudinal plate; 12. Control groove; 13. Restriction sleeve; 14. Round block; 15. Restriction spring; 16. Restriction block; 17. Horizontal plate; 18. Motor; 19. Sprocket; 20. Chain; 21. Drive shaft; 22. Drive block; 23. Cylinder; 24. Piston rod; 25. Push block; 26. Thrust bearing; 27. Support spring; 28. Restriction rail; 29. ​​Restriction groove; 30. Restriction wheel; 31. Connecting shaft; 32. Push spring. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figures 1-5 A polishing device for producing safety shoes includes a frame 1, on which a polishing device is mounted. A polishing wheel 2 is mounted on the frame 1, and a quick-change device is mounted on the polishing wheel 2. The quick-change device includes a quick-change sleeve 3, a release sleeve 4, a quick-change groove 5, a quick-change rod 6, a release groove 7, a quick-change block 8, and a mating groove 9. The quick-change sleeve 3 is detachably fitted onto the outside of the quick-change rod 6. The release sleeve 4 is rotatably mounted on the outside of the quick-change sleeve 3. The quick-change groove 5 is located on the outside of the quick-change rod 6, and the release groove 7 is located on the inside of the release sleeve 4. A portion of the quick-change block 8 passes through the mating groove 9 and is inserted into the quick-change groove 5. The mating groove 9 is located on the side wall of the quick-change sleeve 3. The quick-change sleeve 3 is mounted on the outside of the quick-change sleeve 3. Equipped with a locking mechanism, the locking mechanism includes a control plate 10, a longitudinal plate 11, a control groove 12, a limiting sleeve 13, round blocks 14, a limiting spring 15, a limiting block 16, and a horizontal plate 17. The control plate 10 is rotatably mounted on the outside of the quick-change sleeve 3. The longitudinal plate 11 is fixedly connected to one side of the limiting sleeve 13. The control groove 12 is opened on the control plate 10. The limiting sleeve 13 is slidably sleeved on the outside of the quick-change sleeve 3. Multiple round blocks 14 are fixedly mounted on the outside of the quick-change sleeve 3. The two ends of the limiting spring 15 are respectively connected to two adjacent limiting blocks 16. Multiple limiting blocks 16 are movably arranged on one side of the release sleeve 4. Three horizontal plates 17 are fixedly mounted on one side of the longitudinal plate 11.

[0032] The polishing device includes a motor 18, a sprocket 19, a chain 20, a drive shaft 21, and a drive block 22. The motor 18 is detachably mounted inside the frame 1. The sprocket 19 is detachably mounted at the bottom of the drive shaft 21. The top of the drive shaft 21 passes through the top of the frame 1 and is connected to the drive block 22. The chain 20 is sleeved on the outside of the sprocket 19. The polishing wheel 2 is detachably mounted on the outside of the drive block 22. The quick-change rod 6 is fixedly connected to the top of the drive block 22. The output end of the motor 18 is connected to the bottom of one of the drive shafts 21.

[0033] A cylinder 23 is detachably mounted on the top of the frame 1. A piston rod 24 is connected to the output end of the cylinder 23, and a push block 25 is connected to the other end of the piston rod 24.

[0034] In this embodiment, when the device is needed, first place the safety shoes on the top of the frame 1, positioning them on the side of the push block 25. Then, turn on the motor 18, causing the drive shaft 21 connected to the output end of the motor 18 to rotate. The drive shaft 21 then drives the corresponding polishing wheel 2 to rotate through the drive block 22 at one end. Simultaneously, the sprocket 19 mounted on the outside of the drive shaft 21 will drive the sprocket 19 mounted on the outside of the other drive shaft 21 to rotate through the cooperation of the chain 20. Thus, the two drive shafts 21 are respectively driven by the corresponding drive blocks 25. 2. Drive the corresponding polishing wheel 2 to rotate, and then drive the cylinder 23, so that the cylinder 23 drives the push block 25 forward through the piston rod 24 connected to the output end, so that the safety shoe placed on one side is pushed forward, so that the safety shoe enters between the two polishing wheels 2 for polishing. After polishing is completed, drive the cylinder 23 in the opposite direction, so that the cylinder 23 drives the push block 25 to reset through the piston rod 24 connected to the output end. Then remove the polished safety shoe, and then repeat the above steps to polish the next safety shoe.

[0035] Please see Figures 3-5 As a further implementation of the overall equipment: a thrust bearing 26 is detachably provided on one side of the control panel 10, a support spring 27 is connected to one side of the thrust bearing 26, and the other end of the support spring 27 is connected to the limiting sleeve 13.

[0036] The release sleeve 4 is connected to a plurality of limiting rails 28 on one side, and the limiting block 16 is provided with a limiting groove 29 on one side, which is adapted to the limiting rails 28.

[0037] A limiting wheel 30 is provided on one side of the limiting block 16, which is rotated and engages between the two corresponding circular blocks 14.

[0038] A connecting shaft 31 is provided in the release groove 7, and one side of the quick-change block 8 is rotatably disposed in the release groove 7 via the connecting shaft 31.

[0039] Multiple push springs 32 are movably installed in the release groove 7. The push springs 32 are connected to one side of the quick-change block 8, and the other end of the push springs 32 is in contact with the inner wall of the release groove 7.

[0040] More specifically, when the polishing wheel 2 needs to be replaced according to usage and processing requirements, firstly, rotate the control plate 10, causing the thrust bearing 26 mounted on one side of the control plate 10 to rotate, and causing the control plate 10 to rotate the control groove 12 to the position corresponding to the horizontal plate 17. Then, push the limiting sleeve 13, which causes the longitudinal plate 11 and the horizontal plate 17 to gradually slide through the control groove 12. The limiting sleeve 13 and the thrust bearing 26 cooperate to compress the support spring 27. When the support spring 27 is compressed to its limit, the horizontal plate 17 closest to the limiting sleeve 13 just passes through the control groove 12 and moves to the other side of the control plate 10. Then, rotate the control plate 10 again, causing the control plate 10 to rotate the control groove 12 to a position that does not correspond to the horizontal plate 17. At this time, the longitudinal plate 11, together with the transverse plate 17 closest to the limiting sleeve 13, limits the limiting sleeve 13 to one side of the control plate 10, so that the limiting sleeve 13 no longer limits the limiting wheel 30. Then, the release sleeve 4 rotates forward. The release sleeve 4, through the limiting rail 28 set on one side and the limiting groove 29, drives the limiting block 16 to rotate forward, so that the limiting block 16 drives the limiting wheel 30 installed on one side to roll out between the two round blocks 14. Then, the limiting wheel 30 drives the limiting block 16 to slide outward along the limiting rail 28 and the limiting groove 29. Then, the limiting block 16 will drive the limiting spring 15 to stretch outward. At the same time, the release sleeve 4 drives the release groove 7 opened on the inner side to rotate forward, and drives the quick-change block 8 to rotate through the connecting shaft 31. Then, the quick-change block 8 is rotated through the inner wall of the groove 9. The quick-change block 8 is pressed from one side, causing it to rotate along the connecting shaft 31. This gradually moves the quick-change block 8 out of the quick-change slot 5 and into the release slot 7. Simultaneously, the quick-change block 8 presses against the multiple push springs 32 connected to one side. Then, the quick-change sleeve 3 is pulled upwards, removing it from the outside of the quick-change rod 6. The polishing wheel 2 is then removed from the outside of the transmission block 22 and replaced. After replacement, the polishing wheel 2 is reinstalled on the outside of the transmission block 22, allowing the quick-change rod 6 to pass through it. The quick-change sleeve 3 is then fitted onto the outside of the quick-change rod 6 from above. The release sleeve 4 is then rotated in the opposite direction, causing the release slot 7 on its inner side to rotate in the opposite direction, which in turn drives the connecting shaft 31 and the inner movable quick-change block. 8 rotates in the opposite direction, and then the inner wall of the groove 9 gradually stops limiting the quick-change block 8. Then, the push spring 32 resets and pushes the quick-change block 8, so that the quick-change block 8 gradually rotates out of the release groove 7 along the connecting shaft 31 and gradually gets into the quick-change groove 5. Then, the limiting rail 28, in conjunction with the limiting groove 29, just drives the limiting block 16 to move between the two original circular blocks 14. Then, the limiting spring 15 resets and pulls the limiting block 16 and the limiting wheel 30 to slide inward along the limiting rail 28 and the limiting groove 29, so that the limiting wheel 30 gets back into the original two circular blocks 14. Then, the control plate 10 is rotated again, so that the control plate 10 drives the thrust bearing 26 to rotate again, and the control plate 10 drives the control groove 12 to rotate to the position corresponding to the horizontal plate 17.Then, the support spring 27 pushes the limiting sleeve 13 to slide and reset. The limiting sleeve 13 then drives the three horizontal plates 17 to slide and reset via the longitudinal plate 11. After the support spring 27 is fully reset, the other two horizontal plates 17 move to opposite sides of the control plate 10. The control plate 10 is then rotated, causing the control groove 12 to rotate to a position not corresponding to the horizontal plates 17. The longitudinal plate 11 and the two horizontal plates 17 then cooperate to limit and support the limiting sleeve 13, limiting the inner wall of the limiting sleeve 13 to the outer side of the limiting wheel 30, preventing the release sleeve 4 from rotating. This ensures the stability of the installation structure and the stable use of the polishing wheel 2.

[0041] In summary, when using or operating the entire equipment: First, place the safety shoes on top of the frame 1, positioning them to the side of the push block 25. Then, turn on the motor 18, causing the drive shaft 21 connected to the output end of the motor 18 to rotate. This drive shaft 21, through a transmission block 22 at one end, drives the corresponding polishing wheel 2 to rotate. Simultaneously, the sprocket 19 mounted on the outside of this drive shaft 21, through the chain 20, drives the sprocket 19 mounted on the outside of another drive shaft 21 to rotate. This allows the two drive shafts 21 to rotate respectively, thus driving the corresponding polishing wheel 2. The transmission block 22 drives the corresponding polishing wheel 2 to rotate, and then drives the cylinder 23, so that the cylinder 23 drives the push block 25 forward through the piston rod 24 connected to the output end, so that the safety shoe placed on one side is pushed forward, so that the safety shoe enters between the two polishing wheels 2 for polishing. After polishing is completed, the cylinder 23 is driven in the opposite direction, so that the cylinder 23 drives the push block 25 to reset through the piston rod 24 connected to the output end. Then the polished safety shoe is removed, and then the same steps are repeated to polish the next safety shoe.

[0042] When the polishing wheel 2 needs to be replaced according to usage and processing requirements, first rotate the control plate 10, causing the thrust bearing 26 mounted on one side of the control plate 10 to rotate, and causing the control plate 10 to rotate the control groove 12 to the position corresponding to the horizontal plate 17. Then push the limiting sleeve 13, and the limiting sleeve 13 causes the longitudinal plate 11 and the horizontal plate 17 to gradually slide through the control groove 12. The limiting sleeve 13 and the thrust bearing 26 cooperate to compress the support spring 27. When the support spring 27 is compressed to its limit, the horizontal plate 17 closest to the limiting sleeve 13 just passes through the control groove 12 and moves to the other side of the control plate 10. Then rotate the control plate 10 again, causing the control plate 10 to rotate the control groove 12 to a position that does not correspond to the horizontal plate 17. At this time, the longitudinal plate 11. With the horizontal plate 17 closest to the limiting sleeve 13, the limiting sleeve 13 is limited to one side of the control plate 10, so that the limiting sleeve 13 no longer limits the limiting wheel 30. Then, the release sleeve 4 is rotated forward. The release sleeve 4 drives the limiting block 16 to rotate forward through the limiting rail 28 and the limiting groove 29 on one side. This causes the limiting wheel 30, which is rotated on one side of the limiting block 16, to roll out between the two round blocks 14. Then, the limiting wheel 30 drives the limiting block 16 to slide outward along the limiting rail 28 and the limiting groove 29. Then, the limiting block 16 drives the limiting spring 15 to stretch outward. At the same time, the release sleeve 4 drives the release groove 7 opened on the inner side to rotate forward, and drives the quick-change block 8 to rotate through the connecting shaft 31. Then, the inner wall of the groove 9 engages with the quick-change block 8. Side compression causes the quick-change block 8 to rotate along the connecting shaft 31, gradually moving it out of the quick-change slot 5 and into the release slot 7. Simultaneously, the quick-change block 8 compresses multiple push springs 32 connected to one side, then pulls the quick-change sleeve 3 upwards, removing it from the outside of the quick-change rod 6. The polishing wheel 2 is then removed from the outside of the transmission block 22 and replaced. After replacement, the polishing wheel 2 is reinstalled on the outside of the transmission block 22, allowing the quick-change rod 6 to pass through it. The quick-change sleeve 3 is then fitted onto the outside of the quick-change rod 6 from above. The release sleeve 4 is then rotated in the opposite direction, causing the release slot 7 on its inner side to rotate in the opposite direction, and driving the connecting shaft 31 and the inner movable quick-change block 8 into... The rotation proceeds in the opposite direction, and then one side of the inner wall of the groove 9 gradually stops limiting the quick-change block 8. The push spring 32 then resets and pushes the quick-change block 8, causing it to gradually rotate out of the release groove 7 along the connecting shaft 31 and gradually engage with the quick-change groove 5. Then, the limiting rail 28, in conjunction with the limiting groove 29, moves the limiting block 16 between the two original circular blocks 14. The limiting spring 15 then resets and pulls the limiting block 16 and the limiting wheel 30 to slide inwards along the limiting rail 28 and the limiting groove 29, causing the limiting wheel 30 to re-engage between the two original circular blocks 14. Then, the control plate 10 is rotated again, causing the thrust bearing 26 to rotate again, and causing the control plate 10 to rotate the control groove 12 to the position corresponding to the horizontal plate 17.Then, the support spring 27 pushes the limiting sleeve 13 to slide and reset. The limiting sleeve 13 then drives the three horizontal plates 17 to slide and reset via the longitudinal plate 11. After the support spring 27 is fully reset, the other two horizontal plates 17 move to opposite sides of the control plate 10. The control plate 10 is then rotated, causing the control groove 12 to rotate to a position not corresponding to the horizontal plates 17. The longitudinal plate 11 and the two horizontal plates 17 then cooperate to limit and support the limiting sleeve 13, limiting the inner wall of the limiting sleeve 13 to the outer side of the limiting wheel 30, preventing the release sleeve 4 from rotating. This ensures the stability of the installation structure and the stable use of the polishing wheel 2.

[0043] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A polishing device for producing safety shoes, comprising a frame (1), characterized in that: A polishing device is installed on the frame (1), and a polishing wheel (2) is provided on the frame (1). A quick-change device is installed on the polishing wheel (2). The quick-change device includes a quick-change sleeve (3), a release sleeve (4), a quick-change groove (5), a quick-change rod (6), a release groove (7), a quick-change block (8), and a mating groove (9). The release sleeve (4) is installed on the outside of the quick-change sleeve (3). The quick-change groove (5) is opened on the outside of the quick-change rod (6). The release groove (7) is opened on the inside of the release sleeve (4). A portion of the quick-change block (8) passes through the mating groove (9) and is inserted into the quick-change groove (5). The mating groove (9) is opened on the side wall of the quick-change sleeve (3). A locking mechanism is installed on the outside of the quick-change sleeve (3). The locking mechanism includes a control plate (10), a longitudinal plate (11), a control groove (12), a limiting sleeve (13), a round block (14), a limiting spring (15), a limiting block (16), and a horizontal plate (17). The longitudinal plate (11) is connected to one side of the limiting sleeve (13). The control groove (12) is opened on the control plate (10). The limiting sleeve (13) is fitted on the outside of the quick-change sleeve (3). Multiple round blocks (14) are installed on the outside of the quick-change sleeve (3). The limiting spring (15) is connected to two adjacent limiting blocks (16). Three horizontal plates (17) are installed on one side of the longitudinal plate (11).

2. The polishing device for producing safety shoes according to claim 1, characterized in that: The polishing device includes a motor (18), a sprocket (19), a chain (20), a drive shaft (21), and a drive block (22). The motor (18) is detachably mounted inside the frame (1). The sprocket (19) is detachably mounted at the bottom of the drive shaft (21). The top end of the drive shaft (21) passes through the top end of the frame (1) and is connected to the drive block (22). The chain (20) is sleeved on the outside of the sprocket (19). The polishing wheel (2) is detachably mounted on the outside of the drive block (22). The quick-change rod (6) is fixedly connected to the top end of the drive block (22). The output end of the motor (18) is connected to the bottom end of one of the drive shafts (21).

3. The polishing device for producing safety shoes according to claim 2, characterized in that: A cylinder (23) is detachably provided at the top of the frame (1). A piston rod (24) is connected to the output end of the cylinder (23), and a push block (25) is connected to the other end of the piston rod (24).

4. A polishing device for producing safety shoes according to any one of claims 1-3, characterized in that: A thrust bearing (26) is detachably provided on one side of the control board (10), and a support spring (27) is connected to one side of the thrust bearing (26). The other end of the support spring (27) is connected to the limiting sleeve (13).

5. The polishing device for producing safety shoes according to claim 4, characterized in that: The release sleeve (4) is connected to a plurality of limiting rails (28) on one side, and the limiting block (16) is provided with a limiting groove (29) on one side, and the limiting groove (29) is adapted to the limiting rails (28).

6. The polishing device for producing safety shoes according to claim 5, characterized in that: The limiting block (16) has a limiting wheel (30) on one side that rotates, and the limiting wheel (30) is engaged between the two corresponding circular blocks (14).

7. The polishing device for producing safety shoes according to claim 1, characterized in that: The release groove (7) is provided with a connecting shaft (31), and one side of the quick-change block (8) is rotatably disposed in the release groove (7) through the connecting shaft (31).

8. A polishing device for producing safety shoes according to claim 7, characterized in that: Multiple push springs (32) are movably provided in the release groove (7). The push springs (32) are connected to one side of the quick-change block (8), and the other end of the push springs (32) is in contact with the inner wall of the release groove (7).

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