A cylindrical stone block polishing device

Abstract

The present application belongs to the technical field of special machinery manufacturing for building material production, in particular to a cylindrical stone block polishing device, which comprises a rack, two groups of driving rollers symmetrically and rotatably installed on the rack, a first pulley installed at one end of the driving roller, a synchronous belt engaged with the first pulley, a second pulley engaged with the synchronous belt, the second pulley rotatably installed on a fixed plate, the fixed plate fixedly installed on one side of the end portion of the rack, a polishing mechanism for polishing stone materials arranged at the middle portion of the upper end of the rack, and a conveying mechanism arranged in the rack, the conveying mechanism comprising two groups of transmission shafts symmetrically and rotatably installed in the rack, which can drive several groups of carrying inserts to make circular motion, so that the stone materials can be taken and placed at the same time when polishing, ensuring the continuous polishing of the stone materials, and the cooperation of the first polishing pad and the second polishing pad can realize the polishing of the outer circle and the end face of the stone materials.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of manufacturing machinery for producing building materials, in particular to a cylindrical stone block polishing device. BACKGROUND

[0002] Stone is widely used in the fields of construction and decoration, landscape and garden engineering, municipal and transportation facilities, etc. due to its natural beauty, durability, fire resistance, corrosion resistance and other characteristics. In the production and processing of stone, raw materials are processed into spherical, cylindrical, square and other shapes. Since the surface of the shaped stone is rough, it needs to be polished to improve its functionality, aesthetics and durability.

[0003] The patent with publication number CN219026880U discloses a cylindrical outer circle polishing device, which includes a base, two groups of support seats, a polishing assembly, a first roller shaft, a second roller shaft, and a traveling assembly. The two groups of support seats are symmetrically distributed at both ends of the base. The traveling assembly includes a sliding seat, a sliding plate movably installed on the sliding seat, and an extension cylinder fixedly installed on the base for driving the sliding plate. The scheme sets multiple one-way stop components on the sliding plate to enable the traveling assembly to unidirectionally push the cylindrical stone located at the upper end between the first roller shaft and the second roller shaft, thereby realizing the simultaneous polishing of multiple cylindrical stones on the polishing device, greatly improving the polishing efficiency of the outer circle of the cylindrical stone. In addition, the device is also provided with corresponding components to make the advancing assembly more reliable and stable. At the same time, a pneumatic cylinder is provided as the advancing mechanism of the traveling assembly, thereby improving the efficiency of the returning mechanism and further improving the working efficiency of the device.

[0004] In the above-mentioned scheme, only the outer surface of the stone can be polished, and the two ends of the stone cannot be polished. Currently, similar stones with short length and large diameter need to be polished at the outer circle and both ends, and the above-mentioned device cannot be applied to such stones. Therefore, the present application provides a cylindrical stone block polishing device. SUMMARY

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art.

[0006] The technical scheme adopted by the present application to solve its technical problems is: a cylindrical stone block polishing device, comprising a rack, two groups of driving rollers are symmetrically rotatably installed on the rack, a first pulley is installed at one end of the driving roller, the first pulley meshes with a synchronous belt, the synchronous belt meshes with a second pulley, the second pulley is rotatably installed on a fixed plate, the fixed plate is fixedly installed on one side of the end portion of the rack, a polishing mechanism for polishing stone is arranged at the middle portion of the upper end of the rack, a conveying mechanism is arranged in the rack, the conveying mechanism comprises two groups of transmission shafts, the two groups of transmission shafts are symmetrically rotatably installed in the rack, two groups of sprockets are symmetrically installed on the transmission shafts, a chain meshes with the two groups of sprockets, a plurality of groups of carrier jigs are arranged around the two groups of chains, the carrier jig comprises a carrier main body, two groups of chains are respectively fixedly connected to the two sides of the carrier main body, two groups of clamps are symmetrically arranged on the carrier main body, a second polishing pad is arranged on one side of the clamp, the polishing mechanism comprises a support frame, the support frame is fixedly installed on the rack, a movable frame is movably installed on the rack, a first cylinder for driving the movable frame is fixedly installed on the rack, a polishing disc is rotatably installed at the lower end of the movable frame, a first polishing pad is arranged on the polishing disc;

[0007] By driving the plurality of groups of carrier jigs to do circular motion, the stone can be taken and placed at the same time when polishing, ensuring continuous polishing of the stone, and the cooperation of the first polishing pad and the second polishing pad realizes polishing of the outer circle and the end face of the stone.

[0008] Preferably, the carrier jig further comprises two groups of movable blocks, the two groups of movable blocks are symmetrically movably installed in the carrier main body, the clamp is installed on the movable block, a lifting frame is arranged between the two groups of movable blocks, an elliptical spring ring is arranged at the upper end of the lifting frame, a supporting rod is fixedly connected to the lifting frame, four groups of through holes are formed in the movable block, four groups of guide shafts are slidably connected to the four groups of through holes, the guide shafts are fixedly installed in the carrier main body, a pin shaft is arranged at one end of the carrier main body, inclined grooves are arranged on both sides of the lifting frame, the pin shaft is arranged in the two groups of inclined grooves, two groups of sliding grooves are symmetrically formed in the lifting frame, two groups of sliding rails are symmetrically arranged in the carrier main body, the sliding rails are slidably connected to the sliding grooves, a roller is rotatably installed at the lower end of the supporting rod, a guide plate is arranged between the two groups of transmission shafts, the transmission shafts are rotatably connected to the guide plate, the roller is rollingly connected to the outer circle of the guide plate, the outer circle of the guide plate is composed of an annular surface, an inclined surface and a straight surface.

[0009] Under the guidance of the inclined grooves, the pin shaft drives the movable block along the four groups of guide shafts towards the stone until the roller rolls onto the straight surface, so that the stone is clamped between the two groups of first polishing pads, and the first polishing pad gives a certain pressure to the end face of the stone. When the stone is polished, the carrier jig will continue to move, so that the roller rolls from the straight surface to the annular surface. Under the rebounding force of the elliptical spring ring, the distance between the two groups of first polishing pads is slightly greater than the length of the stone again, so as to facilitate the worker to take the stone from the carrier jig.

[0010] Preferably, the clamp comprises a clamping plate, the clamping plate movably inserts the movable block, the second polishing pad is installed on the clamping plate, two groups of bearing blocks symmetrically arranged on both sides of the clamping plate, springs arranged on the bearing blocks, the carrying insert further comprises a driving block, a supporting rod movably inserts the driving block, the driving block is provided with guide columns at both ends, the lower end of the clamping plate is provided with a guide hole, the guide column is slidably connected with the guide hole, the middle part of the guide plate is provided with a driving mechanism, the driving mechanism comprises a guide rail, the guide rail is fixedly installed on the guide plate, the guide rail is slidably connected with the driving plate, the guide plate is fixedly installed with a second air cylinder for driving the driving plate, the driving block is provided with a butt joint groove for butt joint with the upper end of the driving plate;

[0011] The driving block drives the two groups of clamping plates to move upward through the two groups of guide columns, so that the clamping plate drives the second polishing pad to move upward along the end face of the stone, in the process, the clamping plate slides along the inner cavity of the movable block, the clamping plate drives the bearing block to compress the spring, then the second air cylinder pulls the driving plate downward, so that the second polishing pad moves downward along the end face of the stone, and the above operation is repeated, so that the second polishing pad moves up and down along the end face of the stone, thereby increasing the friction degree of the second polishing pad on the stone, not only speeding up the polishing efficiency of the stone, but also improving the polishing quality of the stone.

[0012] The beneficial effects of the present application are as follows:

[0013] 1. By driving a plurality of groups of carrying inserts to do circular motion, the stone can be taken and placed at the same time when polishing the stone, ensuring continuous polishing and polishing of the stone, and the cooperation of the first polishing pad and the second polishing pad realizes polishing and polishing of the outer circle and the end face of the stone.

[0014] 2. In the process that the carrying insert drives the stone to move towards the polishing mechanism, the roller on the carrying insert first rolls along the annular surface, then the roller is extruded by the inclined surface, so that the roller pushes the supporting rod together with the lifting frame to move upward, and the lifting frame compresses the elliptical spring ring, in the process, the sliding groove on the lifting frame slides along the sliding rail, guiding the movement of the lifting frame, and the ends of the two groups of pins slide along the inclined grooves, under the guidance of the inclined grooves, the pins drive the movable blocks to move towards the stones along the four groups of guide shafts, until the roller rolls on the straight surface, so that the stone is clamped between the two groups of first polishing pads, and the first polishing pad gives a certain pressure to the end face of the stone, when the stone is polished, the carrying insert will continue to move, so that the roller rolls on the annular surface from the straight surface, under the rebounding force of the elliptical spring ring, the distance between the two groups of first polishing pads is slightly greater than the length of the stone again, so as to facilitate the worker to take the stone from the carrying insert.

[0015] 3. When the carrying tool moves to the position directly below the polishing disc, the upper end of the driving plate is just moved into the butt joint groove on the driving block. When polishing the stone, the second cylinder is started to push the driving plate to slide upward along the guide rail, and the driving block is moved upward through the butt joint groove by the upper end of the driving plate. The driving block drives the two sets of clamping plates to move upward through the two sets of guide columns, so that the clamping plates drive the second polishing pad to move upward against the end face of the stone. In this process, the clamping plates slide along the inner cavity of the movable block, and the clamping plates drive the bearing block to compress the spring, and then the second cylinder pulls the driving plate downward, so that the second polishing pad moves downward against the end face of the stone. Repeating the above operation, the second polishing pad moves up and down against the end face of the stone, thereby increasing the friction degree of the second polishing pad on the stone, not only speeding up the polishing efficiency of the stone, but also improving the polishing quality of the stone. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be further described below in combination with the drawings.

[0017] Figure 1 It is a partial structural schematic view of the application.

[0018] Figure 2 It is a combined schematic view of the driving roller, the first pulley, the synchronous belt, the second pulley and the fixed plate of the application.

[0019] Figure 3 It is a combined schematic view of the rack, the polishing mechanism and the conveying mechanism of the application.

[0020] Figure 4 It is a combined schematic view of the conveying mechanism and the stone of the application.

[0021] Figure 5 It is a combined schematic view of the pushing plate and the limiting rack of the application.

[0022] Figure 6 It is a combined schematic view of the carrier body, the movable block and the lifting frame of the application.

[0023] Figure 7 It is a combined schematic view of the carrier body, the movable block and the lifting frame of the application.

[0024] Figure 8 It is a combined schematic view of the guide plate, the driving mechanism and the carrying tool of the application.

[0025] Figure 9 It is a combined schematic view of the guide plate, the driving mechanism and the carrying tool of the application.

[0026] In the diagram: 1. Frame; 2. Drive roller; 3. First pulley; 4. Synchronous belt; 5. Second pulley; 6. Fixed plate; 7. Grinding mechanism; 8. Conveying mechanism; 9. Stone; 701. Support frame; 702. Movable frame; 703. First cylinder; 704. Grinding disc; 705. First polishing pad; 801. Drive shaft; 8011. Guide plate; 11. Annular surface; 12. Inclined surface; 13. Straight surface; 802. Sprocket; 804. Chain; 805. Transport device; 8051. Carrier body; 511. Slide rail; 8052 8053. Fixture; 8054. Second polishing pad; 8055. Movable block; 541. Through hole; 542. Guide shaft; 543. Pin; 8055. Lifting frame; 551. Inclined groove; 552. Slide groove; 8056. Elliptical spring ring; 8057. Support rod; 571. Roller; 8058. Drive block; 581. Connecting groove; 8059. Guide post; 521. Clamping plate; 21. Guide hole; 522. Receiving block; 523. Spring; 8012. Drive mechanism; 121. Guide rail; 122. Drive plate; 123. Second cylinder. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0028] Example 1: As Figures 1 to 3 As shown in the embodiment of the present invention, a cylindrical stone grinding device includes a frame 1. Two sets of drive rollers 2 are symmetrically rotatably mounted on the frame 1. A first pulley 3 is mounted on one end of each drive roller 2. The first pulley 3 meshes with a synchronous belt 4, and the synchronous belt 4 meshes with a second pulley 5. The second pulley 5 is rotatably mounted on a fixed plate 6, which is fixedly mounted on one side of the end of the frame 1. A grinding mechanism 7 for grinding stone material 9 is provided in the middle of the upper end of the frame 1. A conveying mechanism 8 is provided inside the frame 1. The conveying mechanism 8 includes two sets of drive shafts 801, which are symmetrically rotatably mounted inside the frame 1. Two sets of sprockets 802 are symmetrically mounted on the drive shafts 801. A chain 804 meshes with the two sets of sprockets 802. The grinding mechanism 7 includes a carrier body 805, which is arranged between two sets of chains 804. Each carrier body 805 includes a carrier body 8051, with two sets of chains 804 fixedly connected to both sides of the carrier body 8051, two sets of clamps 8052 symmetrically arranged on the carrier body 8051, and a second polishing pad 8053 arranged on one side of the clamps 8052. The grinding mechanism 7 includes a support frame 701, which is fixedly installed on the frame 1, a movable frame 702 movably installed on the frame 1, a first cylinder 703 fixedly installed on the frame 1 for driving the movable frame 702, a grinding disc 704 rotatably installed at the lower end of the movable frame 702, and a first polishing pad 705 arranged on the grinding disc 704.

[0029] Specifically, attachedFigure 3 The arrow in the middle indicates the position of the loading point. In the initial state, a group of carrier inserts 805 is located at the loading point, and two groups of clamps 8052 on the carrier insert 805 are located between the two groups of drive rollers 2. When polishing the stone 9 is needed, the stone 9 is placed between the two groups of clamps 8052 on the carrier insert 805 located at the loading point. The second polishing pad 8053 on the clamp 8052 will adhere to the end face of the stone 9, and the stone 9 is located on the two groups of drive rollers 2. Then, a group of transmission shafts 801 is driven by a motor to rotate, which drives the two groups of chain wheels 802 to rotate, and the two groups of chain wheels 802 drive the two groups of chains 804 and a plurality of groups of carrier inserts 805 to move in a circular motion, and the Figure 1 The arrow in the middle indicates the direction of the circular motion. The stone 9 moves along with the corresponding carrier insert 805 to the lower side of the polishing mechanism 7 along the two groups of drive rollers 2, until the stone 9 moves to the lower side of the polishing disc 704. Then, the movable frame 702 and the polishing disc 704 are driven downward by the first air cylinder 703, so that the first polishing pad 705 on the polishing disc 704 is pressed against the stone 9. Then, the second pulley 5 is driven by a motor to rotate, which drives the first pulley 3 and the corresponding drive roller 2 to rotate through the synchronous belt 4. The rotating drive roller 2 drives the stone 9 to rotate, so that the two end faces of the stone 9 rub against the two groups of second polishing pads 8053, achieving polishing of the two end faces of the stone 9. At the same time, the polishing disc 704 is driven by the motor to rotate, which drives the second polishing pad 8053 to polish the outer circle of the rotating stone 9, achieving polishing of the outer circle of the stone 9. During the polishing of the stone 9, the stone 9 is continuously placed on the next group of carrier inserts 805 located at the loading point. After the polishing of the stone 9 is completed, the polishing disc 704 is withdrawn, and the plurality of groups of carrier inserts 805 are continuously driven to move in a circular motion, so that the next group of stones 9 moves directly below the polishing disc 704. During the polishing of the next group of stones 9, the polished stone 9 can be removed from the corresponding carrier insert 805, and the stone 9 to be polished can be placed on the carrier insert 805 located at the loading point. The operation is repeated in a cycle. Compared with the prior art, the plurality of groups of carrier inserts 805 are driven to move in a circular motion, so that the stone 9 can be taken and placed simultaneously during polishing, ensuring continuous polishing of the stone 9. In addition, the cooperation of the first polishing pad 705 and the second polishing pad 8053 achieves polishing of the outer circle and the end face of the stone 9.

[0030] As Figures 4 to 6As shown, the carrying tool 805 further comprises two sets of movable blocks 8054 symmetrically movably installed in the carrier body 8051, the clamp 8052 is installed on the movable blocks 8054, a lifting frame 8055 is arranged between the two sets of movable blocks 8054, an oval elastic ring 8056 is arranged at the upper end of the lifting frame 8055, a supporting rod 8057 is fixedly connected to the lifting frame 8055, four sets of through holes 541 are formed on the movable blocks 8054, the four sets of through holes 541 are slidably connected with four sets of guide shafts 542, the guide shafts 542 are fixedly installed in the carrier body 8051, a pin shaft 543 is arranged at one end of the carrier body 8051, the lifting frame 8055 is provided with two sets of inclined grooves 551 on both sides, the pin shaft 543 is arranged in the two sets of inclined grooves 551 respectively, two sets of sliding grooves 552 are symmetrically formed on the lifting frame 8055, two sets of sliding rails 511 are symmetrically arranged in the carrier body 8051, the sliding rails 511 are slidably connected with the sliding grooves 552, a roller 571 is rotatably installed at the lower end of the supporting rod 8057, a guide plate 8011 is arranged between the two sets of transmission shafts 801, the transmission shaft 801 is rotatably connected with the guide plate 8011, the roller 571 is rollingly connected with the outer ring of the guide plate 8011, and the outer ring of the guide plate 8011 is composed of an annular surface 11, an inclined surface 12 and a straight surface 13.

[0031] Specifically, the elliptical elastic ring 8056 is made of stainless steel with good elasticity. When the first polishing pad 705 polishes the end face of the stone 9, the first polishing pad 705 must have a little extrusion force on the end face of the stone 9. However, this will cause the distance between the two groups of first polishing pads 705 to be relatively small, making it difficult for the staff to place the stone 9 between the two groups of clamps 8052. Therefore, when the carrying insert 805 is located at the loading point, the distance between the two groups of first polishing pads 705 on the carrying insert 805 is slightly larger than the length of the stone 9, facilitating the staff to place the stone 9 on the carrying insert 805. When the carrying insert 805 moves the stone 9 towards the polishing mechanism 7, the rollers 571 on the carrying insert 805 first roll along the annular surface 11, and then the rollers 571 are extruded by the inclined surface 12, causing the rollers 571 to push the supporting rods 8057 and the lifting frame 8055 to move upwards, and the lifting frame 8055 compresses the elliptical elastic ring 8056. During this process, the sliding groove 552 on the lifting frame 8055 slides along the sliding rail 511 to guide the movement of the lifting frame 8055, and the ends of the two groups of pin shafts 543 slide along the inclined grooves 551, which guide the pin shafts 543 to drive the movable blocks 8054 along the four groups of guide shafts 542 towards the stone 9, until the rollers 571 roll onto the straight surface 13, so that the stone 9 is clamped between the two groups of first polishing pads 705, and the first polishing pads 705 give the end face of the stone 9 a certain pressure. After the stone 9 is polished, the carrying insert 805 will continue to move, causing the rollers 571 to roll from the straight surface 13 to the annular surface 11. Under the rebounding force of the elliptical elastic ring 8056, the distance between the two groups of first polishing pads 705 is again slightly larger than the length of the stone 9, thereby facilitating the staff to remove the stone 9 from the carrying insert 805.

[0032] Embodiment two: as shown in Figures 7 to 9 comparing embodiment one, another embodiment of the present application is: the clamp 8052 includes a clamping plate 521, the clamping plate 521 is movably inserted into the movable block 8054, the second polishing pad 8053 is installed on the clamping plate 521, two groups of supporting blocks 522 are symmetrically arranged on both sides of the clamping plate 521, springs 523 are arranged on the supporting blocks 522, the carrying insert 805 further includes a driving block 8058, the supporting rod 8057 is movably inserted into the driving block 8058, the driving block 8058 is provided with guide columns 8059 at both ends, the lower end of the clamping plate 521 is provided with guide holes 21, the guide columns 8059 are slidably connected to the guide holes 21, the middle part of the guide plate 8011 is provided with a driving mechanism 8012, the driving mechanism 8012 includes guide rails 121, the guide rails 121 are fixedly installed on the guide plate 8011, the guide rails 121 are slidably connected to driving plates 122, the guide plate 8011 is fixedly installed with a second air cylinder 123 for driving the driving plates 122, and the driving block 8058 is provided with an abutting groove 581 for abutting the upper end of the driving plate 122.

[0033] Specifically, when the carrying tool 805 moves directly below the polishing disc 704, the upper end of the driving plate 122 is just moved into the docking groove 581 on the driving block 8058. When polishing the stone 9, the second air cylinder 123 is started to push the driving plate 122 to slide upward along the guide rail 121, and at the same time, the upper end of the driving plate 122 passes through the docking groove 581 to move the driving block 8058 upward. The driving block 8058 drives the two sets of clamping plates 521 to move upward through the two sets of guide columns 8059, so that the clamping plate 521 drives the second polishing pad 8053 to move upward against the end face of the stone 9. In this process, the clamping plate 521 slides along the inner cavity of the movable block 8054, and the clamping plate 521 drives the bearing block 522 to compress the spring 523. Then the second air cylinder 123 pulls the driving plate 122 downward, so that the second polishing pad 8053 moves downward against the end face of the stone 9. The above operation is repeated to move the second polishing pad 8053 up and down against the end face of the stone 9, thereby increasing the friction degree of the second polishing pad 8053 on the stone 9, not only speeding up the polishing efficiency of the stone 9, but also improving the polishing quality of the stone 9.

[0034] Working principle: put the stone 9 into the two groups of clamps 8052 on the carrier plug 805 at the loading point, the second polishing pad 8053 on the clamp 8052 will fit the end face of the stone 9, while the stone 9 is on the two groups of driving rollers 2, then drive a group of transmission shafts 801 by motor, the transmission shafts 801 drive two groups of chain wheels 802 to rotate, two groups of chain wheels 802 drive two groups of chains 804 together with several groups of carrier plugs 805 to do circular motion, so that the stone 9 moves along with the corresponding carrier plug 805 to the polishing mechanism 7 below along the two groups of driving rollers 2, until the stone 9 moves to the polishing disc 704 below, then drive the movable frame 702 together with the polishing disc 704 to move down by the first cylinder 703, so that the first polishing pad 705 on the polishing disc 704 extrudes to the stone 9, then drive the second pulley 5 to rotate by motor, the second pulley 5 drives the first pulley 3 together with the corresponding driving roller 2 to rotate through the synchronous belt 4, the rotating driving roller 2 drives the stone 9 to rotate, so that the two end faces of the stone 9 produce friction with the two groups of second polishing pads 8053, realizing the polishing of the two end faces of the stone 9, at the same time, the motor drives the polishing disc 704 to rotate, the polishing disc 704 drives the second polishing pad 8053 to polish the outer circle of the rotating stone 9, realizing the polishing of the outer circle of the stone 9, during the polishing of the stone 9, continue to place the stone 9 on the next group of carrier plugs 805 at the loading point, after the polishing of the stone 9 is finished, withdraw the polishing disc 704, continue to drive several groups of carrier plugs 805 to do circular motion, so that the next group of stones 9 moves to the polishing disc 704 directly below, during the polishing of the next group of stones 9, the polished stone 9 can be taken off from the corresponding carrier plug 805, at the same time, the stone to be polished is placed on the carrier plug 805 at the loading point, the above operation is repeated in a cycle;

[0035] When the carrying fixture 805 is located at the loading point, the distance between the two groups of first polishing pads 705 on the carrying fixture 805 is slightly greater than the length of the stone 9, so as to facilitate the worker to place the stone 9 on the carrying fixture 805. When the carrying fixture 805 drives the stone 9 to move towards the polishing mechanism 7, the roller 571 on the carrying fixture 805 first rolls along the annular surface 11, and then the roller 571 is pressed by the inclined surface 12, so that the roller 571 pushes the supporting rod 8057 together with the lifting frame 8055 to move upwards, and the lifting frame 8055 compresses the elliptical elastic ring 8056. In this process, the sliding groove 552 on the lifting frame 8055 slides along the sliding rail 511 to guide the movement of the lifting frame 8055, and the ends of the two groups of pin shafts 543 slide along the inclined grooves 551, which guide the pin shafts 543 to drive the movable blocks 8054 to move along the four groups of guide shafts 542 towards the stone 9, until the roller 571 rolls onto the straight surface 13, so that the stone 9 is clamped between the two groups of first polishing pads 705, and the first polishing pads 705 give a certain pressure to the end surface of the stone 9. After the stone 9 is polished, the carrying fixture 805 will continue to move, so that the roller 571 rolls from the straight surface 13 to the annular surface 11. Under the rebounding force of the elliptical elastic ring 8056, the distance between the two groups of first polishing pads 705 is again slightly greater than the length of the stone 9, so as to facilitate the worker to take the stone 9 from the carrying fixture 805;

[0036] When the carrying fixture 805 moves directly below the polishing disc 704, the upper end of the driving plate 122 is moved into the abutting groove 581 on the driving block 8058. When the stone 9 is polished, the second air cylinder 123 is started to push the driving plate 122 to slide upwards along the guide rail 121, and at the same time, the upper end of the driving plate 122 moves the driving block 8058 upwards through the abutting groove 581. The driving block 8058 drives the two groups of clamping plates 521 to move upwards through the two groups of guide columns 8059, so that the clamping plates 521 drive the second polishing pads 8053 to move upwards along the end surface of the stone 9. In this process, the clamping plates 521 slide in the cavities of the movable blocks 8054, and the clamping plates 521 drive the receiving blocks 522 to compress the springs 523. Then the second air cylinder 123 pulls the driving plate 122 downwards, so that the second polishing pads 8053 move downwards along the end surface of the stone 9. Repeating the above operation, the second polishing pads 8053 move up and down along the end surface of the stone 9, thereby increasing the friction force of the second polishing pads 8053 on the stone 9.

[0037] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A cylindrical stone block polishing device comprising a frame (1), characterized in that: Two groups of driving rollers (2) are symmetrically installed on the frame (1), one end of the driving roller (2) is provided with a first pulley (3), the first pulley (3) is meshed with a synchronous belt (4), the synchronous belt (4) is meshed with a second pulley (5), the second pulley (5) is rotatably installed on a fixed plate (6), the fixed plate (6) is fixedly installed on one side of the end of the frame (1), a polishing mechanism (7) for polishing stone (9) is arranged on the middle of the upper end of the frame (1), a conveying mechanism (8) is arranged in the frame (1); The conveying mechanism (8) comprises two groups of transmission shafts (801), and the two groups of transmission shafts (801) are symmetrically rotatably installed in the frame (1); Two groups of chain wheels (802) are symmetrically installed on the transmission shaft (801); Two groups of chains (804) are meshed with the two groups of chain wheels (802); A plurality of groups of carrier jigs (805) are arranged between the two groups of chains (804); The carrier jig (805) comprises a carrier body (8051), and the two sides of the carrier body (8051) are respectively fixedly connected with the two groups of chains (804); Two groups of clamps (8052) are symmetrically arranged on the carrier body (8051); A second polishing pad (8053) is arranged on one side of the clamp (8052); The polishing mechanism (7) comprises a support frame (701) fixedly installed on the frame (1); A movable frame (702) movably installed on the frame (1); A first cylinder (703) fixedly installed on the frame (1) for driving the movable frame (702); A polishing disc (704) rotatably installed at the lower end of the movable frame (702); A first polishing pad (705) is arranged on the polishing disc (704), the carrier jig (805) further comprises two groups of movable blocks (8054), a lifting frame (8055) arranged between the two groups of movable blocks (8054), and a supporting rod (8057) fixedly connected with the lifting frame (8055), four groups of through holes (541) are formed in the movable block (8054), four groups of guide shafts (542) are slidably connected with the four groups of through holes (541), the guide shaft (542) is fixedly installed in the carrier body (8051), a pin shaft (543) is arranged at one end of the carrier body (8051), inclined grooves (551) are arranged on the two sides of the lifting frame (8055), the pin shaft (543) is located in the two groups of inclined grooves (551) respectively, a roller (571) is rotatably installed at the lower end of the supporting rod (8057), a guide plate (8011) is arranged between the two groups of transmission shafts (801), the transmission shaft (801) is rotatably connected with the guide plate (8011), the roller (571) is rollingly connected with the outer ring of the guide plate (8011), and the outer ring of the guide plate (8011) comprises an annular surface (11), an inclined surface (12) and a straight surface (13).

2. A device for polishing a columnar stone block according to claim 1, characterized in that: Two groups of the movable blocks (8054) are symmetrically movably installed in the carrier body (8051), and the clamp (8052) is installed on the movable blocks (8054); The carrier tool (805) further comprises an oval elastic ring (8056) arranged at the upper end of the lifting frame (8055).

3. A device for polishing a columnar stone block according to claim 2, characterized in that: Two groups of slide grooves (552) are symmetrically arranged on the lifting frame (8055), and two groups of slide rails (511) are symmetrically arranged in the carrier body (8051), wherein the slide rails (511) are slidably connected with the slide grooves (552).

4. A device for polishing a columnar stone block according to claim 3, characterized in that: The clamp (8052) comprises a clamping plate (521), the clamping plate (521) is movably inserted into the movable block (8054), and the second polishing pad (8053) is installed on the clamping plate (521). Two groups of receiving blocks (522) are symmetrically arranged on both sides of the clamping plate (521). A spring (523) is arranged on the receiving block (522).

5. A device for polishing a columnar stone block according to claim 4, characterized in that: The carrier tool (805) further comprises a driving block (8058), the supporting rod (8057) is movably inserted into the driving block (8058), the driving block (8058) is provided with a guide column (8059) at both ends, and the clamping plate (521) is provided with a guide hole (21) at the lower end.

6. A device for polishing a columnar stone block according to claim 5, characterized in that: A driving mechanism (8012) is arranged in the middle of the guide plate (8011), the driving mechanism (8012) comprises a guide rail (121), and the guide rail (121) is fixedly installed on the guide plate (8011); The guide rail (121) is slidably connected with a driving plate (122), and the guide plate (8011) is fixedly installed with a second air cylinder (123) for driving the driving plate (122), and the driving block (8058) is provided with a butt joint groove (581) for butt joint with the upper end of the driving plate (122).

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