A fiber optic coloring ink production and conveying device

Abstract

This invention belongs to the field of ink production and conveying technology, specifically a fiber optic coloring ink production and conveying device, including a vacuum feeder. The vacuum feeder consists of a negative pressure suction device, a temporary storage tank, and a feed pipe. The temporary storage tank is equipped with a first filter and a second filter. The feed pipe is located between the first and second filter screens. The temporary storage tank is equipped with a first grinding ring. A second grinding ring is fixedly installed at the bottom of the first filter screen. The positions of the first and second grinding rings are set as inclined surfaces, forming a discharge port between them. A guide platform is fixedly installed at the top of the second grinding ring. The outer wall of the guide platform is inclined. By repeatedly crushing the conveyed pigment powder, the color difference problem caused by uneven pigment dispersion during ink mixing is solved, thereby improving the smoothness and batch stability of ink production.

Description

Technical Field

[0001] This invention belongs to the field of ink production and conveying technology, specifically a fiber optic coloring ink production and conveying device. Background Technology

[0002] Fiber optic coloring ink is a special ink designed specifically for fiber optic identification. It achieves differentiation and identification by forming a firm colored coating on the outer surface of the fiber. Its production involves the precise proportioning of multiple raw materials and the synergistic effect of multiple processes. The preparation process involves premixing, high-speed dispersion, grinding and refining, viscosity adjustment, and filtration and purification of resin base materials (such as epoxy resin, polyurethane, etc.), nano-sized coloring pigments (such as phthalocyanine organic pigments), solvents, and functional additives such as dispersants and leveling agents.

[0003] In the process of conveying various pigment powders into the mixing tank for subsequent processing, a vacuum feeder is usually used to convey the pigment powders. Because pigment powders are highly hygroscopic and prone to agglomeration, and also have high particle surface energy, electrostatic adsorption occurs during the conveying process, which can also cause agglomeration. This agglomeration can cause pipeline blockage and interrupt production, resulting in uneven dispersion during mixing, causing color difference, affecting the accuracy of weighing and measurement, and also affecting the smoothness and stability of the pigments.

[0004] Therefore, the present invention provides a fiber optic coloring ink production and conveying device. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the optical fiber coloring ink production and conveying device of the present invention includes a vacuum suction machine, which consists of a negative pressure suction device, a temporary storage tank and a feed pipe;

[0007] The storage tank is equipped with a first filter and a second filter, and the feed pipe is located between the first filter and the second filter.

[0008] The storage tank is equipped with a first grinding ring inside, and a second grinding ring is fixedly installed at the bottom of the first filter screen. The positions of the first grinding ring and the second grinding ring are set as inclined surfaces, and a discharge port is formed between the first grinding ring and the second grinding ring. A guide platform is fixedly installed at the top of the second grinding ring, and the outer wall of the guide platform is inclined. The opening angle of the inclined surface on the first grinding ring is greater than the opening angle of the inclined surface on the second grinding ring.

[0009] A movable rod is fixedly installed on the outer wall of the first grinding ring, and a guide ring groove is opened on the inner wall of the temporary storage bucket. One end of the movable rod extends into the interior of the guide ring groove, and the height of one end of the guide ring groove is greater than the height of the other end.

[0010] The second filter screen is equipped with a power component for controlling the rotation of the first grinding ring.

[0011] The power assembly includes a rotating rod and a connecting rod. The rotating rod is rotatably mounted above the second filter screen, and the connecting rod is fixedly mounted on the outer wall of the rotating rod. The other end of the connecting rod extends to the bottom of the first grinding ring and is slidably connected to the first grinding ring. A motor is connected to the top of the rotating rod.

[0012] A shovel is fixedly installed on the rotating rod. The bottom end of the shovel is in contact with the top end of the second filter screen. A grinding table is rotatably installed on the inner wall of the temporary storage tank. A rotating groove is opened on the inner wall of the temporary storage tank. A first guide rod is set on the shovel, and a second guide rod is fixedly installed on the grinding table. Both the first guide rod and the second guide rod extend into the interior of the rotating groove. The cross sections of the shovel and the grinding table are triangular and correspond to each other.

[0013] The length of the grinding table is less than the length of the shovel table. The outer wall of the rotating rod is provided with a positioning ring groove. A positioning rod is elastically installed at the other end of the grinding table. One end of the positioning rod extends into the interior of the positioning ring groove. An arc-shaped pressing block for pressing the first guide rod is fixedly installed inside the rotating groove. Multiple arc-shaped pressing blocks are provided, and the multiple arc-shaped pressing blocks are arranged in a ring inside the rotating groove.

[0014] The rotating groove has a first receiving groove for accommodating the second guide rod, and the positioning ring groove has a second receiving groove for accommodating the positioning rod. A blocking block is slidably installed inside the first receiving groove.

[0015] The temporary storage bucket has a rotating shaft installed inside, and a connecting rope is fixedly connected to the shaft. The other end of the connecting rope is fixedly connected to the blocking block.

[0016] A ratchet is fixedly installed on the outer wall of the shaft, and a control block is rotatably installed inside the temporary storage bucket via a torsion spring. A ratchet bar for blocking the ratchet is slidably installed on the control block.

[0017] A gear ring is fixedly installed inside the rotating groove. A transmission gear that meshes with the gear ring is rotatably installed on the outer wall of the first guide rod. A control gear that meshes with the transmission gear is fixedly installed on the rotating shaft. A coil spring is provided between the rotating shaft and the temporary storage bucket. A blocking plate is fixedly installed at the end of the ratchet near the coil spring. A notch is provided on the blocking plate for the ratchet to slide. The end of the ratchet near the blocking plate is set as an inclined surface.

[0018] A positioning plate is fixedly installed on the control block, and a transmission rod is rotatably installed on the positioning plate. One end of the transmission rod passes through a ratchet, and a spiral groove is opened on the transmission rod. A slide rod is fixedly installed inside the ratchet, and one end of the slide rod extends into the spiral groove. A top pressure spring is set between the ratchet and the positioning plate. A rotating gear is fixedly installed on one end of the transmission rod, and a ring rack that meshes with the rotating gear is fixedly installed on the rotating shaft.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The fiber optic coloring ink production and conveying device of the present invention utilizes the inclined surface cooperation of the first grinding ring and the second grinding ring, as well as the guiding effect of the guide ring groove on the moving rod. When the power component drives the first grinding ring to rotate, initial crushing is achieved. When the moving rod slides along the inclined guide ring groove, it forces the first grinding ring to generate axial displacement synchronously during rotation, causing the gap of the discharge port to gradually shrink, forming a progressive compression space. This achieves secondary crushing of agglomerated pigment powder and effectively solves the color difference problem caused by uneven pigment dispersion during ink mixing.

[0021] 2. The fiber optic coloring ink production and conveying device of the present invention utilizes the triangular cross-section cooperation between the shovel and the grinding table, and the array of arc-shaped top pressure blocks in the rotating groove. When the rotating rod drives the shovel to rotate, the grinding table reciprocates under the interaction of the second guide rod and the arc-shaped top pressure blocks, performing a third crushing action. With the timed engagement triggering of the transmission gear and the control gear, the shovel and the grinding table automatically separate once after each fixed distance of operation, effectively removing adhering materials, further reducing the agglomeration of pigment powder, and significantly improving the smoothness and batch stability of ink production. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a cross-sectional view of the temporary storage bucket in this invention;

[0025] Figure 3 In this invention Figure 2 Enlarged view of point A in the image;

[0026] Figure 4 This is a schematic diagram of the structure of the second filter screen in this invention;

[0027] Figure 5 In this invention Figure 4 Enlarged view of point B in the image;

[0028] Figure 6 This is a schematic diagram of the structure of the baffle plate in this invention;

[0029] Figure 7 In this invention Figure 6 Enlarged view of point C in the image;

[0030] Figure 8 This is a schematic diagram of the structure of the second receiving groove in this invention;

[0031] Figure 9 This is a schematic diagram of the guide ring groove in this invention.

[0032] In the diagram: 1. Negative pressure suction device; 2. Temporary storage tank; 3. First filter screen; 4. Second filter screen; 5. Rotating rod; 6. First grinding ring; 7. Second grinding ring; 8. Discharge port; 9. Guide platform; 10. Shovel platform; 11. Grinding table; 12. First receiving tank; 13. Rotating groove; 14. Blocking block; 15. Connecting rope; 16. Rotating shaft; 17. Control gear; 18. Gear ring; 19. Ring rack; 20. Arc-shaped top pressure block; 21. Rack 21. Wheel; 22. Ratchet; 23. Block; 24. Notch; 25. Coil spring; 26. Control block; 27. Positioning plate; 28. Rotating gear; 29. ​​Transmission rod; 30. Spiral groove; 31. Slide rod; 32. Positioning ring groove; 33. Second receiving groove; 34. Positioning rod; 35. First guide rod; 36. Transmission gear; 37. Feed pipe; 38. Moving rod; 39. Guide ring groove; 40. Connecting rod; 41. Second guide rod. Detailed Implementation

[0033] 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.

[0034] like Figures 1 to 9 As shown in the embodiment of the present invention, a fiber optic coloring ink production and conveying device includes a vacuum suction machine, which consists of a negative pressure suction device 1, a temporary storage tank 2, and a feed pipe 37. The negative pressure suction device 1 suctions the pigment powder to be conveyed and conveys it to the interior of the temporary storage tank 2 through the feed pipe 37. The pigment powder stored in the temporary storage tank 2 is then sent to the interior of the mixing tank for ink preparation. The temporary storage tank 2 can also be directly replaced by a mixing tank, and multiple pigment powders can be directly conveyed to the mixing tank through the negative pressure suction device for ink processing.

[0035] The temporary storage tank 2 is equipped with a first filter screen 3 and a second filter screen 4, and the feed pipe 37 is located between the first filter screen 3 and the second filter screen 4;

[0036] When pigment powder is fed through feed pipe 37 between first filter 3 and second filter 4, the unaggregated pigment powder will pass through second filter 4 and enter the storage tank 2 for storage.

[0037] The storage tank 2 is equipped with a first grinding ring 6 inside, and a second grinding ring 7 is fixedly installed at the bottom of the first filter screen 3. The positions of the first grinding ring 6 and the second grinding ring 7 are set as inclined surfaces, and a discharge port 8 is formed between the first grinding ring 6 and the second grinding ring 7. A guide platform 9 is fixedly installed at the top of the second grinding ring 7, and the outer wall of the guide platform 9 is inclined.

[0038] The second filter screen 4 is equipped with a power component for controlling the rotation of the first grinding ring 6.

[0039] When pigment powder is conveyed through the feed pipe 37, it will be blocked by the inclined surface on the feed platform 9 and guided to the first grinding ring 6. The pigment powder will be sent to the discharge port 8 through the inclined surface on the first grinding ring 6. Small particles will fall onto the second filter screen 4 through the discharge port 8. The first grinding ring 6 can be rotated by the power component, which can perform preliminary grinding and crushing of the pigment powder that is stuck between the first grinding ring 6 and the second grinding ring 7, reducing its volume so that it can pass through the discharge port 8.

[0040] The angle of the inclined surface on the first grinding ring 6 is greater than the angle of the inclined surface on the second grinding ring 7. A moving rod 38 is fixedly installed on the outer wall of the first grinding ring 6. A guide ring groove 39 is opened on the inner wall of the temporary storage bucket 2. One end of the moving rod 38 extends into the interior of the guide ring groove 39. The height of one end of the guide ring groove 39 is greater than the height of the other end.

[0041] When the power assembly controls the first grinding ring 6 to rotate, the moving rod 38 slides inside the guide ring groove 39. Because one end of the guide ring groove 39 is higher, when the moving rod 38 slides to a higher position, it will simultaneously drive the first grinding ring 6 to move upward inside the temporary storage tank 2. Since the opening angle of the inclined surface on the first grinding ring 6 is greater than that on the inclined surface of the second grinding ring 7, when the first grinding ring 6 slides upward inside the temporary storage tank 2, the diameter of the opening of the discharge port 8 decreases, and the space between the first grinding ring 6 and the second grinding ring 7 also decreases. At this time, the first grinding ring 6 rotates under the control of the power assembly to perform secondary crushing, thereby improving the crushing effect of agglomerated pigment powder, improving the ink mixing effect, and reducing the problem of color difference caused by uneven dispersion.

[0042] In a preferred embodiment of the present invention, the power assembly includes a rotating rod 5 and a connecting rod 40. The rotating rod 5 is rotatably mounted above the second filter screen 4, and the connecting rod 40 is fixedly mounted on the outer wall of the rotating rod 5. The other end of the connecting rod 40 extends to the bottom of the first grinding ring 6 and is slidably connected to the first grinding ring 6. A motor is connected to the top of the rotating rod 5.

[0043] The motor starts and drives the rotating rod 5 to rotate. The connecting rod 40 can drive the first grinding ring 6 to rotate. When the first grinding ring 6 rotates, the moving rod 38 and the guide ring groove 39 can make the first grinding ring 6 move up and down repeatedly while moving, which can break up the agglomerated pigment powder that falls between the first grinding ring 6 and the second grinding ring 7 twice.

[0044] In a preferred embodiment of the present invention, a shovel 10 is fixedly installed on the rotating rod 5. The bottom end of the shovel 10 is in contact with the top end of the second filter screen 4. A grinding table 11 is rotatably installed on the inner wall of the temporary storage tank 2. A rotating groove 13 is opened on the inner wall of the temporary storage tank 2. A first guide rod 35 is provided on the shovel 10. A second guide rod 41 is fixedly installed on the grinding table 11. Both the first guide rod 35 and the second guide rod 41 extend into the interior of the rotating groove 13. The cross sections of the shovel 10 and the grinding table 11 are triangular and correspond to each other.

[0045] The length of the grinding table 11 is less than the length of the shovel table 10. The outer wall of the rotating rod 5 is provided with a positioning ring groove 32. The other end of the grinding table 11 is elastically installed with a positioning rod 34. One end of the positioning rod 34 extends into the interior of the positioning ring groove 32. An arc-shaped pressing block 20 for pressing the second guide rod 41 is fixedly installed inside the rotating groove 13. Multiple arc-shaped pressing blocks 20 are provided, and multiple arc-shaped pressing blocks 20 are arranged in a ring inside the rotating groove 13.

[0046] The upper part of the shovel table 10 is inclined, and the lower part of the grinding table 11 is inclined. When the shovel table 10 and the grinding table 11 are in contact, they can be combined to form a complete cuboid. When the rotating rod 5 drives the shovel table 10 to rotate on the second filter screen 4, it can spread the pigment powder falling on the second filter screen 4, making it easier for unagglomerated pigment powder to penetrate the second filter screen 4. Through the inclined surface set on the shovel table 10, pigment powder that has not been broken up can be pushed onto the inclined surface on the shovel table 10 when the shovel table 10 moves. Because the grinding table 11 can only rotate around the opening trajectory of the rotating groove 13 under the cooperation of the second guide rod 41 and the rotating groove 13, When the rotating rod 5 drives the shovel 10 to contact the grinding table 11, it will push the grinding table 11 to move simultaneously. When the second guide rod 41 is pressed by the arc-shaped top pressure block 20, the grinding table 11 will slide towards the rotating rod 5 until it slides between the two arc-shaped top pressure blocks 20. The grinding table 11 will then be reset by elastic control. With the help of the multiple arc-shaped top pressure blocks 20, the grinding table 11 can slide back and forth on the shovel 10 to perform a third crushing of the uncrushed pigment located between the grinding table 11 and the shovel 10. This effectively removes agglomerates in the pigment powder, reduces color difference caused by uneven mixing, and improves the smoothness and stability of the ink.

[0047] In a preferred embodiment of the present invention, the rotating groove 13 is provided with a first receiving groove 12 for the second guide rod 41 to be received, the positioning ring groove 32 is provided with a second receiving groove 33 for the positioning rod 34 to be received, and a blocking block 14 is slidably installed inside the first receiving groove 12.

[0048] The temporary storage bucket 2 has a rotating shaft 16 installed inside, and a connecting rope 15 is fixedly connected to the rotating shaft 16. The other end of the connecting rope 15 is fixedly connected to the blocking block 14.

[0049] When the rotating rod 5 moves the shovel 10 and the grinding table 11 to the first receiving groove 12 opened on the rotating groove 13, the grinding table 11 drives the second guide rod 41 to slide upward inside the first receiving groove 12 under the thrust of the shovel 10. At the same time, the positioning rod 34 also slides upward inside the second receiving groove 33. At this time, the shovel 10 and the grinding table 11 separate.

[0050] The rotation of the shaft 16 can wind up the connecting rope 15, causing the blocking block 14 to be lifted into the first receiving groove 12. When the shaft 16 unwinds, the blocking block 14 will be blocked in the first receiving groove 12 under the action of gravity. At the same time, it can also block the sliding of the second guide rod 41, preventing the second guide rod 41 from sliding into the interior of the first receiving groove 12. At this time, even if the grinding table 11 is located in the position of the first receiving groove 12, the second guide rod 41 cannot be stuck into the interior of the first receiving groove 12.

[0051] In a preferred embodiment of the present invention, a ratchet 21 is fixedly installed on the outer wall of the rotating shaft 16, and a control block 26 is rotatably installed inside the temporary storage bucket 2 via a torsion spring. A ratchet bar 22 for blocking the ratchet 21 is slidably installed on the control block 26.

[0052] In a preferred embodiment of the present invention, a gear ring 18 is fixedly installed inside the rotating groove 13, a transmission gear 36 that meshes with the gear ring 18 is rotatably installed on the outer wall of the first guide rod 35, a control gear 17 that meshes with the transmission gear 36 is fixedly installed on the rotating shaft 16, a coil spring 25 is provided between the rotating shaft 16 and the temporary storage bucket 2, a blocking plate 23 is fixedly installed at one end of the ratchet 21 near the coil spring 25, a notch 24 for the ratchet 22 to slide on the blocking plate 23, and the end of the ratchet 22 near the blocking plate 23 is set as an inclined surface.

[0053] A positioning plate 27 is fixedly installed on the control block 26. A transmission rod 29 is rotatably installed on the positioning plate 27. One end of the transmission rod 29 passes through the ratchet 22. A spiral groove 30 is opened on the transmission rod 29. A slide rod 31 is fixedly installed inside the ratchet 22. One end of the slide rod 31 extends into the spiral groove 30. A top pressure spring is provided between the ratchet 22 and the positioning plate 27. A rotating gear 28 is fixedly installed on one end of the transmission rod 29. A ring rack 19 that meshes with the rotating gear 28 is fixedly installed on the rotating shaft 16.

[0054] When the rotating rod 5 drives the shovel table 10 to rotate, it shovels up the pigment powder agglomerated on the second filter screen 4. As it rotates, it comes into contact with the grinding table 11. Through the cooperation of the second guide rod 41 and multiple arc-shaped top pressure blocks 20, the grinding table 11 can slide back and forth on the surface of the shovel table 10, which can grind the agglomerated pigment powder on the shovel table 10. The transmission gear 36 set on the first guide rod 35 cooperates with the gear ring 18 to make the transmission gear 36 rotate continuously until the transmission gear 36 meshes with the control gear 17, and drives the control gear 17 to rotate, which is transmitted through the rotating shaft 1. 6 drives the ratchet 21 to rotate, the ratchet bar 22 limits the ratchet 21, the coil spring 25 will also deform to store elastic potential energy, the rotating shaft 16 winds up the connecting rope 15, and the control blocking block 14 slides upward inside the first receiving groove 12, so that the first receiving groove 12 is empty. Then, when the grinding table 11 drives the second guide rod 41 to move into the first receiving groove 12, the second guide rod 41 will be pushed into the first receiving groove 12, so that the scraper 10 can be separated from the grinding table 11, and the pigment powder adhering to the scraper 10 and the grinding table 11 can be removed.

[0055] The shovel platform 10 will then continue to rotate, continuously collecting the clumps of pigment powder. This continues until the shovel platform 10 drives the first guide rod 35 and the transmission gear 36 to mesh with the control gear 17. At this point, the rotating shaft 16 will also drive the ring rack 19 to mesh with the rotating gear 28, causing the transmission rod 29 to rotate. Through the cooperation of the spiral groove 30 and the slide rod 31, the ratchet 22 can be controlled to slide towards the positioning plate 27. The top spring deforms and stores elastic potential energy until the ratchet 22 slides off the ratchet 21 through the inclined surface and is located on the side of the blocking plate 23 away from the ratchet 21. When the first guide rod 35 drives the transmission gear 36 to engage with the control gear 17, the roller... Spring 25 releases its elastic potential energy, causing the rotating shaft 16 to reset. At the same time, the blocking plate 23 also resets. At this time, the notch 24 on the blocking plate 23 corresponds to the ratchet 22. The top pressure spring on the ratchet 22 releases its elastic potential energy, causing the ratchet 21 to reset, so that the rotating shaft 16 unwinds. The blocking block 14 slides to the bottom of the first receiving groove 12 and presses against the second guide rod 41. At this time, after the rotating rod 5 drives the shovel 10 to contact the grinding table 11, the grinding table 11 can be pushed away again to break up the clumps of pigment powder on the shovel 10. Through the above structure, the shovel 10 and the grinding table 11 can automatically and intermittently break up the clumps of pigment powder on the second filter screen 4.

[0056] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0057] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An optical fiber coloring ink production conveying device, comprising a vacuum suction machine composed of a negative pressure suction device (1), a temporary storage barrel (2) and a feeding pipe (37); characterized in that The inside of the temporary storage barrel (2) is provided with a first filter screen (3) and a second filter screen (4), and the feeding pipe (37) is located between the first filter screen (3) and the second filter screen (4); The inside of the temporary storage barrel (2) is provided with a first grinding ring (6), the bottom end of the first filter screen (3) is fixedly installed with a second grinding ring (7), the opposite positions of the first grinding ring (6) and the second grinding ring (7) are provided as inclined surfaces, a discharge port (8) is formed between the first grinding ring (6) and the second grinding ring (7), the top end of the second grinding ring (7) is fixedly installed with a flow guide table (9), the outer wall of the flow guide table (9) is provided in an inclined manner, the angle of the inclined surface on the first grinding ring (6) is larger than that of the inclined surface on the second grinding ring (7); The outer wall of the first grinding ring (6) is fixedly installed with a moving rod (38), the inner wall of the temporary storage barrel (2) is provided with a guide ring groove (39), one end of the moving rod (38) extends into the inside of the guide ring groove (39), and the position height of one end of the guide ring groove (39) is greater than that of the other end; The second filter screen (4) is provided with a power assembly for controlling the rotation of the first grinding ring (6); The power assembly comprises a rotating rod (5) and a connecting rod (40), the rotating rod (5) is rotatably installed above the second filter screen (4), the connecting rod (40) is fixedly installed on the outer wall of the rotating rod (5), the other end of the connecting rod (40) extends to the bottom of the first grinding ring (6) and is slidably connected with the first grinding ring (6), and the top of the rotating rod (5) is provided with a motor; The rotating rod (5) is fixedly installed with a shovel table (10), the bottom end of the shovel table (10) is attached to the top end of the second filter screen (4), the inner wall of the temporary storage barrel (2) is rotatably installed with a grinding table (11), the inner wall of the temporary storage barrel (2) is provided with a rotating groove (13), the shovel table (10) is provided with a first guide rod (35), the grinding table (11) is fixedly installed with a second guide rod (41), the first guide rod (35) and the second guide rod (41) both extend into the inside of the rotating groove (13), the cross sections of the shovel table (10) and the grinding table (11) are all triangular and correspond to each other; The length of the grinding table (11) is less than that of the shovel table (10), the outer wall of the rotating rod (5) is provided with a positioning ring groove (32), the other end of the grinding table (11) is elastically installed with a positioning rod (34), one end of the positioning rod (34) extends into the inside of the positioning ring groove (32), the inside of the rotating groove (13) is fixedly installed with arc-shaped pressing blocks (20) for pressing the first guide rod (35), the arc-shaped pressing blocks (20) are provided in a plurality of, and the plurality of arc-shaped pressing blocks (20) are arranged in a ring shape in the inside of the rotating groove (13).

Images