A grinding and screening device for printer toner production and its usage method

Abstract

The present invention belongs to the field of printer toner, and in particular to a grinding and screening device for the production of printer toner. Aiming at the problem that when the existing toner is ground, some unground toner will be collected, and workers need to take it out again and grind it again, resulting in low efficiency. At the same time, there will be a large amount of toner residue on the filter screen, causing the filter screen to be blocked, thereby reducing the screening efficiency of the toner. The following solution is now proposed. It includes a box body. A feed port is opened at the top of the box body. Two symmetrically arranged grinding blocks are rotatably connected to the inner wall of the box body. Two symmetrically arranged first servo motors are fixedly connected to one side of the box body. In the present invention, the toner is ground by setting the grinding blocks. The setting of the bristles can facilitate the removal of the adhered toner. The toner with inappropriate size enters the inside of the first L-shaped plate along the way to complete the collection, and is lifted to one side and sent between the two grinding blocks for grinding again to ensure that the grinding effect meets the requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of printer toner, and particularly relates to a grinding and screening device for printer toner production and a usage method thereof. Background Art

[0002] Toner, also called carbon powder, is a powdery substance used for imaging and fixing on paper in a laser printer. Black toner is composed of components such as binder resin, carbon black, charge control agent, and external additives. Other color pigments, etc. also need to be added to color toner. When printing, due to the monomer remaining in the resin volatilizing when heated, a pungent odor will be generated. Therefore, national standards and industry standards have strictly restricted the TVOC of toner. Therefore, as long as a printer or toner cartridge of qualified quality is purchased, no harmful health gases will be generated during printing.

[0003] When using the existing printer toner, it needs to be ground to a suitable size before use, but there are still the following problems:

[0004] 1. When grinding the toner, some unground toner will be collected, and workers need to take it out again and grind it again, resulting in low efficiency;

[0005] 2. At the same time, a large amount of toner will remain on the filter screen, causing the filter screen to be blocked, thereby reducing the screening efficiency of the toner and making it inconvenient to use.

[0006] In view of the above problems, the present invention document proposes a grinding and screening device for printer toner production. Summary of the Invention

[0007] The present invention provides a grinding and screening device for printer toner production, which solves the disadvantages in the prior art that when grinding toner, some unground toner will be collected, and workers need to take it out again and grind it again, resulting in low efficiency, and at the same time, a large amount of toner will remain on the filter screen, causing the filter screen to be blocked, thereby reducing the screening efficiency of the toner.

[0008] The present invention provides the following technical solutions:

[0009] A grinding and screening device for printer toner production includes a box body. An inlet is opened at the top of the box body. Two symmetrically arranged grinding blocks are rotatably connected to the inner wall of the box body. Two symmetrically arranged first servo motors are fixedly connected to one side of the box body. The output shaft of the first servo motor rotates through the box body and is fixedly connected to one end of the grinding block. One end of one of the grinding blocks is fixedly connected to a second rotating shaft, and one end of the second rotating shaft extends to the outer wall of the box body and is provided with a control component for controlling the re-grinding frequency of the toner;

[0010] The inner wall of the box body is fixedly connected with a first fixing plate. A U-shaped plate is slidably connected to one inner wall of the box body. A regrinding assembly for regrinding toner is arranged inside the U-shaped plate;

[0011] The inner wall of the box body is fixedly connected with a second fixing plate. A same set of filtering assemblies for filtering toner is arranged between one inner wall of the box body and the second fixing plate.

[0012] In a possible design, the control assembly includes an eccentric plate fixedly sleeved on the outer wall of the second rotating shaft. A single-tooth gear is fixedly sleeved on the outer wall of the second rotating shaft. A first rotating shaft is rotatably connected to one side of the box body. An overrunning clutch is arranged on the outer wall of the first rotating shaft. A first spur gear is arranged on the outer wall of the overrunning clutch. The first spur gear meshes with the single-tooth gear. A push plate is fixedly connected to the outer wall of the first spur gear. An elastic switch is arranged on one side of the box body. The elastic switch is used in cooperation with the push plate.

[0013] In a possible design, the regrinding assembly includes a first L-shaped plate slidably connected inside the U-shaped plate. Two symmetrically arranged compression springs are fixedly connected between the bottom of the first L-shaped plate and the inner wall of the bottom of the U-shaped plate. A third fixing plate is fixedly connected to the top of the first L-shaped plate.

[0014] In a possible design, the regrinding assembly includes a second servo motor fixedly connected to one inner wall of the first L-shaped plate. A second spur gear is fixedly sleeved on the output shaft of the second servo motor. A rack is fixedly connected to one inner wall of the box body. The rack meshes with the second spur gear. A triangular plate is fixedly connected to one side of the third fixing plate.

[0015] In a possible design, the regrinding assembly further includes a block slidably penetrating through the inside of the first L-shaped plate. One end of the block is fixedly connected with a limiting plate. A same tension spring is fixedly connected between the limiting plate and the first L-shaped plate. The tension spring is sleeved on the block. A clamping groove engaged with the block is formed in one inner wall of the U-shaped plate. A connecting rod is fixedly connected to one inner wall of the box body. One end of the connecting rod is fixedly connected with a triangular block used in cooperation with the limiting plate.

[0016] In a possible design, the filtering assembly includes a second L-shaped plate fixedly connected to one inner wall of the box body. A filter screen is slidably connected to one side of the second L-shaped plate. A same first spring is fixedly connected between the filter screen and the second L-shaped plate. A baffle is fixedly connected to the top of the filter screen. A rectangular hole is formed in one side of the box body. A push block is fixedly connected to one side of the filter screen. The push block slidably penetrates through the rectangular hole and is used in cooperation with the eccentric plate.

[0017] In a possible design, a groove is formed on one side of the first fixing plate. A sliding plate is slidably connected to the inner wall of the groove. Two symmetrically arranged second springs are fixedly connected between the bottom of the sliding plate and the bottom inner wall of the groove. A trapezoidal block is fixedly connected to the top of the first fixing plate. An inclined surface is formed on the top of the U-shaped plate.

[0018] In a possible design, inclined plates are fixedly connected to one side of the second fixing plate and the inner wall of one side of the box body respectively. A plurality of bristles are fixedly connected to the bottom of the inclined plate. The bristles are used in cooperation with the grinding block.

[0019] A using method of a grinding and screening device for printer toner production specifically includes the following steps:

[0020] S1. When grinding is required, put materials through the feed port, start two first servo motors. The output shafts of the first servo motors drive the grinding blocks to rotate. The grinding blocks grind the toner. The bristles are arranged to facilitate removing the adhered toner. After the toner is ground and passes through the filter screen, the toner with appropriate size is screened out through the filter screen. The toner with inappropriate size slides along the surface of the filter screen and enters the inside of the first L-shaped plate through the surface of the trapezoidal block to complete collection;

[0021] S2. While the grinding blocks are rotating, they drive the second rotating shaft to rotate. The second rotating shaft drives the eccentric plate to rotate. The eccentric plate pushes the pushing block to move vertically downward. The pushing block drives the filter screen to move vertically downward. The filter screen presses the first spring and vibrates continuously to prevent the toner from blocking the filter screen and improve the filtering efficiency;

[0022] S3. While the second rotating shaft is rotating, it drives the single-tooth gear to rotate. The single-tooth gear slowly drives the first spur gear to rotate. The first spur gear drives the pushing plate to rotate until the pushing plate pushes the elastic switch, thereby starting the second servo motor. Due to the setting of the overrunning clutch, the first spur gear will not reverse. At the same time, the starting frequency of the second servo motor can be adjusted according to the number of teeth of the first spur gear;

[0023] S4. After the second servo motor is started, the output shaft of the second servo motor drives the second spur gear to rotate. The second spur gear moves vertically upward along the rack, thereby driving the first L-shaped plate and the U-shaped plate to move vertically upward. After the sliding plate has no pressure, it will move vertically upward under the elastic force of the second spring. At this time, the toner will be blocked by the sliding plate and cannot enter temporarily;

[0024] S5. When the limiting plate moves to a proper position, the triangular block pushes the limiting plate to move horizontally. The limiting plate drives the clamping block to move horizontally, and the clamping block no longer engages with the clamping groove. Thus, the first L-shaped plate and the U-shaped plate are no longer engaged. The first L-shaped plate moves vertically upward under the elastic force of the compression spring, and then the first L-shaped plate can move above the U-shaped plate. The internal toner slides off the surface of the inclined plate and is ground again. The output shaft of the second servo motor reverses and returns to the initial position again.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present invention.

[0026] In the present invention, when grinding is required, it is put in through the feed port, and two first servo motors are started. The output shafts of the first servo motors drive the grinding blocks to rotate. The grinding blocks grind the toner. The bristles are provided to facilitate removing the adhered toner. After the toner is ground, it passes through the filter screen, and the toner of appropriate size is screened out through the filter screen. The toner of inappropriate size slides along the surface of the filter screen and enters the inside of the first L-shaped plate through the surface of the trapezoidal block to complete collection.

[0027] In the present invention, while the grinding block rotates, it drives the second rotating shaft to rotate. The second rotating shaft drives the eccentric plate to rotate. The eccentric plate pushes the pushing block to move vertically downward. The pushing block drives the filter screen to move vertically downward. The filter screen presses the first spring and vibrates continuously to prevent the toner from clogging the filter screen and improve the filtering efficiency.

[0028] In the present invention, while the second rotating shaft rotates, it drives the single-tooth gear to rotate. The single-tooth gear slowly drives the first spur gear to rotate. The first spur gear drives the pushing plate to rotate until the pushing plate pushes the elastic switch, and then the second servo motor is started. Due to the setting of the overrunning clutch, the first spur gear will not reverse, and at the same time, the starting frequency of the second servo motor can be adjusted according to the number of teeth of the first spur gear.

[0029] In the present invention, after the second servo motor is started, the output shaft of the second servo motor drives the second spur gear to rotate. The second spur gear moves vertically upward along the rack, and then drives the first L-shaped plate and the U-shaped plate to move vertically upward. After the sliding plate has no pressure, it will move vertically upward under the elastic force of the second spring. At this time, the toner will be blocked by the sliding plate and cannot enter temporarily.

[0030] In the present invention, when the limiting plate moves to a proper position, the triangular block pushes the limiting plate to move horizontally. The limiting plate drives the clamping block to move horizontally, and the clamping block no longer engages with the clamping groove. Thus, the first L-shaped plate and the U-shaped plate are no longer engaged. The first L-shaped plate moves vertically upward under the elastic force of the compression spring, and then the first L-shaped plate can move above the U-shaped plate. The internal toner slides off the surface of the inclined plate and is ground again. The output shaft of the second servo motor reverses and returns to the initial position again.

[0031] In the present invention, the toner is ground by setting grinding blocks, and the bristles are provided to facilitate the removal of the adhered toner. The toner with inappropriate size enters the interior of the first L-shaped plate to complete collection, and is lifted to one side, fed between the two grinding blocks, and ground again to ensure that the grinding effect meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 FIG. is a three-dimensional structural schematic diagram of a grinding and screening device for printer toner production provided by an embodiment of the present invention;

[0033] Figure 2 FIG. is a three-dimensional structural schematic diagram of a second perspective of a grinding and screening device for printer toner production provided by an embodiment of the present invention;

[0034] Figure 3 FIG. is a three-dimensional sectional structural schematic diagram of a grinding and screening device for printer toner production provided by an embodiment of the present invention;

[0035] Figure 4 FIG. is a structural schematic diagram of a first fixing plate in a grinding and screening device for printer toner production provided by an embodiment of the present invention;

[0036] Figure 5 FIG. is a structural schematic diagram of a sliding plate in a grinding and screening device for printer toner production provided by an embodiment of the present invention;

[0037] Figure 6 FIG. is a structural schematic diagram of a U-shaped plate in a grinding and screening device for printer toner production provided by an embodiment of the present invention;

[0038] Figure 7 FIG. is a structural schematic diagram of a triangular plate in a grinding and screening device for printer toner production provided by an embodiment of the present invention;

[0039] Figure 8 FIG. is a structural schematic diagram of a connecting rod in a grinding and screening device for printer toner production provided by an embodiment of the present invention.

[0040] Reference Numerals:

[0041] 1. Box body; 2. First servo motor; 3. Eccentric plate; 4. Feeding port; 5. Elastic switch; 6. Overrunning clutch; 7. First rotating shaft; 8. Pushing block; 9. Rectangular hole; 10. Second rotating shaft; 11. Single-tooth gear; 12. Pushing plate; 13. First spur gear; 14. Triangular block; 15. Rack; 16. First L-shaped plate; 17. U-shaped plate; 18. Sliding plate; 19. First fixing plate; 20. Trapezoidal block; 21. Filter screen; 22. First spring; 23. Second L-shaped plate; 24. Baffle plate; 25. Inclined plate; 26. Brush bristles; 27. Grinding block; 28. Second fixing plate; 29. Second servo motor; 30. Compression spring; 31. Second spring; 32. Groove; 33. Triangular plate; 34. Second spur gear; 35. Third fixing plate; 36. Card slot; 37. Inclined plane; 38. Block; 39. Tension spring; 40. Limiting plate; 41. Connecting rod. Detailed implementation mode

[0042] The embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

[0043] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixation" means that they are connected to each other and the relative position relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only for reference to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention.

[0044] In the embodiments of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0045] In the embodiments of the present invention, "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0046] References to "one embodiment" or "some embodiments" or the like described in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present invention. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc., which appear at various places in this specification, are not necessarily all referring to the same embodiment, but mean "one or more but not all of the embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized.

[0047] Embodiment 1

[0048] Referring to Figure 1-8 , a grinding and screening device for printer toner production, comprising a box body 1. A feed inlet 4 is provided at the top of the box body 1. Two symmetrically arranged grinding blocks 27 are rotatably connected to the inner wall of the box body 1. Two symmetrically arranged first servo motors 2 are fixedly connected to one side of the box body 1. The output shaft of the first servo motor 2 rotates through the box body 1 and is fixedly connected to one end of the grinding block 27. One end of one of the grinding blocks 27 is fixedly connected to a second rotating shaft 10. One end of the second rotating shaft 10 extends to the outer wall of the box body 1 and is provided with a control component for controlling the re-grinding frequency of the toner.

[0049] A first fixing plate 19 is fixedly connected to the inner wall of the box body 1. A U-shaped plate 17 is slidably connected to one side inner wall of the box body 1. A re-grinding component for re-grinding the toner is arranged inside the U-shaped plate 17.

[0050] A second fixing plate 28 is fixedly connected to the inner wall of the box body 1. A set of filtering components for filtering the toner is arranged between one side inner wall of the box body 1 and the second fixing plate 28.

[0051] Embodiment 2

[0052] Referring to Figure 1-8 , a grinding and screening device for printer toner production, comprising a box body 1. A feed inlet 4 is provided at the top of the box body 1. Two symmetrically arranged grinding blocks 27 are rotatably connected to the inner wall of the box body 1. Two symmetrically arranged first servo motors 2 are fixedly connected to one side of the box body 1. The output shaft of the first servo motor 2 rotates through the box body 1 and is fixedly connected to one end of the grinding block 27. When the two first servo motors 2 are started, the output shafts of the first servo motors 2 drive the grinding blocks 27 to rotate. The grinding blocks 27 grind the toner. The arrangement of the bristles 26 can facilitate the removal of the adhered toner. After the toner is ground, it is ensured that after passing through the filtration of the filter screen 21, the toner of appropriate size is screened out through the filter screen 21, and the toner of inappropriate size slides along the surface of the filter screen 21 and enters the inside of the first L-shaped plate 16 through the surface of the trapezoidal block 20 to complete the collection.

[0053] One end of one of the grinding blocks 27 is fixedly connected to a second rotating shaft 10. One end of the second rotating shaft 10 extends to the outer wall of the box body 1 and is provided with a control component for controlling the re-grinding frequency of the toner. The control component includes an eccentric plate 3 fixedly sleeved on the outer wall of the second rotating shaft 10. A single-tooth gear 11 is fixedly sleeved on the outer wall of the second rotating shaft 10. One side of the box body 1 is rotatably connected to a first rotating shaft 7. An overrunning clutch 6 is arranged on the outer wall of the first rotating shaft 7. A first spur gear 13 is arranged on the outer wall of the overrunning clutch 6. The first spur gear 13 meshes with the single-tooth gear 11. A push plate 12 is fixedly connected to the outer wall of the first spur gear 13. An elastic switch 5 is arranged on one side of the box body 1. The elastic switch 5 is used in cooperation with the push plate 12;

[0054] A first fixing plate 19 is fixedly connected to the inner wall of the box body 1. A U-shaped plate 17 is slidably connected to one side inner wall of the box body 1. A re-grinding component for re-grinding the toner is arranged inside the U-shaped plate 17. The re-grinding component includes a first L-shaped plate 16 slidably connected inside the U-shaped plate 17. Two symmetrically arranged compression springs 30 are fixedly connected between the bottom of the first L-shaped plate 16 and the inner wall of the bottom of the U-shaped plate 17. A third fixing plate 35 is fixedly connected to the top of the first L-shaped plate 16. The re-grinding component includes a second servo motor 29 fixedly connected to one side inner wall of the first L-shaped plate 16. A second spur gear 34 is fixedly sleeved on the output shaft of the second servo motor 29. A rack 15 is fixedly connected to one side inner wall of the box body 1. The rack 15 meshes with the second spur gear 34. After the second servo motor 29 is started, the output shaft of the second servo motor 29 drives the second spur gear 34 to rotate. The second spur gear 34 moves vertically upward along the rack 15, thereby driving the first L-shaped plate 16 and the U-shaped plate 17 to move vertically upward. After there is no pressure on the sliding plate 18, it will move vertically upward under the elastic force of the second spring 31. At this time, the toner will be blocked by the sliding plate 18 and cannot enter temporarily.

[0055] On one side of the third fixing plate 35, a triangular plate 33 is fixedly connected. The re-grinding assembly further includes a clamping block 38 that slidably penetrates through the inside of the first L-shaped plate 16. One end of the clamping block 38 is fixedly connected to a limiting plate 40. A same tension spring 39 is fixedly connected between the limiting plate 40 and the first L-shaped plate 16. The tension spring 39 is sleeved on the clamping block 38. A clamping groove 36 that is engaged with the clamping block 38 is formed on one inner wall of the U-shaped plate 17. One inner wall of the box body 1 is fixedly connected to a connecting rod 41. One end of the connecting rod 41 is fixedly connected to a triangular block 14 that is used in cooperation with the limiting plate 40. When the limiting plate 40 moves to a proper position, the triangular block 14 pushes the limiting plate 40 to move horizontally. The limiting plate 40 drives the clamping block 38 to move horizontally. The clamping block 38 is no longer engaged with the clamping groove 36. Thus, the first L-shaped plate 16 and the U-shaped plate 17 are no longer engaged. The first L-shaped plate 16 moves vertically upward under the elastic force of the compression spring 30. Thus, the first L-shaped plate 16 can move above the U-shaped plate 17. The toner inside slides off from the surface of the inclined plate 25 and is re-ground. The output shaft of the second servo motor 29 rotates in reverse and returns to the initial position again;

[0056] A second fixing plate 28 is fixedly connected to the inner wall of the box body 1. A same set of filtering components for filtering toner is arranged between one inner wall of the box body 1 and the second fixing plate 28. The filtering components include a second L-shaped plate 23 fixedly connected to one inner wall of the box body 1. A filter screen 21 is slidably connected to one side of the second L-shaped plate 23. A same first spring 22 is fixedly connected between the filter screen 21 and the second L-shaped plate 23. A baffle 24 is fixedly connected to the top of the filter screen 21. A rectangular hole 9 is formed on one side of the box body 1. A pushing block 8 is fixedly connected to one side of the filter screen 21. The pushing block 8 slidably penetrates through the rectangular hole 9 and is used in cooperation with the eccentric plate 3. While rotating, the grinding block 27 drives the second rotating shaft 10 to rotate. The second rotating shaft 10 drives the eccentric plate 3 to rotate. The eccentric plate 3 pushes the pushing block 8 to move vertically downward. The pushing block 8 drives the filter screen 21 to move vertically downward. The filter screen 21 presses the first spring 22 and vibrates continuously to prevent the toner from blocking the filter screen 21 and improve the filtering efficiency.

[0057] A groove 32 is formed on one side of the first fixing plate 19. A sliding plate 18 is slidably connected to the inner wall of the groove 32. Symmetrically arranged two second springs 31 are fixedly connected between the bottom of the sliding plate 18 and the bottom inner wall of the groove 32. A trapezoidal block 20 is fixedly connected to the top of the first fixing plate 19. An inclined surface 37 is formed on the top of the U-shaped plate 17. Inclined plates 25 are fixedly connected to one side of the second fixing plate 28 and one inner wall of the box body 1. A plurality of brush hairs 26 are fixedly connected to the bottom of the inclined plate 25. The brush hairs 26 are used in cooperation with the grinding block 27.

[0058] A using method of a grinding and screening device for printer toner production specifically includes the following steps:

[0059] S1. When grinding is required, feed through the feed port 4, start the two first servo motors 2, the output shafts of the first servo motors 2 drive the grinding blocks 27 to rotate, the grinding blocks 27 grind the toner, and the bristles 26 are provided to facilitate the removal of the adhered toner. After the toner is ground and passes through the filter screen 21, the toner of appropriate size is screened out through the filter screen 21, and the toner of inappropriate size slides along the surface of the filter screen 21 and enters the interior of the first L-shaped plate 16 through the surface of the trapezoidal block 20 for collection;

[0060] S2. While the grinding block 27 rotates, it drives the second rotating shaft 10 to rotate, the second rotating shaft 10 drives the eccentric plate 3 to rotate, the eccentric plate 3 pushes the push block 8 to move vertically downward, the push block 8 drives the filter screen 21 to move vertically downward, the filter screen 21 presses the first spring 22 and vibrates continuously to prevent the toner from clogging the filter screen 21 and improve the filtering efficiency;

[0061] S3. While the second rotating shaft 10 rotates, it drives the single-tooth gear 11 to rotate, the single-tooth gear 11 slowly drives the first spur gear 13 to rotate, the first spur gear 13 drives the push plate 12 to rotate until the push plate 12 pushes the elastic switch 5, thereby starting the second servo motor 29. Due to the setting of the overrunning clutch 6, the first spur gear 13 will not reverse, and at the same time, the starting frequency of the second servo motor 29 can be adjusted according to the number of teeth of the first spur gear 13;

[0062] S4. After the second servo motor 29 is started, the output shaft of the second servo motor 29 drives the second spur gear 34 to rotate, the second spur gear 34 moves vertically upward along the rack 15, thereby driving the first L-shaped plate 16 and the U-shaped plate 17 to move vertically upward. After the sliding plate 18 is under no pressure, it will move vertically upward under the elastic force of the second spring 31. At this time, the toner will be blocked by the sliding plate 18 and cannot enter temporarily;

[0063] S5. When the limit plate 40 moves to the appropriate position, the triangular block 14 pushes the limit plate 40 to move horizontally, the limit plate 40 drives the latch 38 to move horizontally, the latch 38 no longer engages with the card slot 36, and thus the first L-shaped plate 16 and the U-shaped plate 17 are no longer engaged. The first L-shaped plate 16 moves vertically upward under the elastic force of the compression spring 30, and thus the first L-shaped plate 16 can move above the U-shaped plate 17, and the toner inside slides down from the surface of the inclined plate 25 for re-grinding. The output shaft of the second servo motor 29 reverses and returns to the initial position again.

[0064] However, as is well known to those skilled in the art, the working principles and wiring methods of the first servo motor 2 and the second servo motor 29 are common knowledge, and they both belong to conventional means or well-known common sense, so they will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0065] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention; without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A grinding and screening device for printer toner production, characterized in that, it includes a box body, a feeding port is opened at the top of the box body, two symmetrically arranged grinding blocks are rotatably connected to the inner wall of the box body, two symmetrically arranged first servo motors are fixedly connected to one side of the box body, the output shaft of the first servo motor rotates through the box body and is fixedly connected to one end of the grinding block, one end of one of the grinding blocks is fixedly connected to a second rotating shaft, one end of the second rotating shaft extends to the outer wall of the box body and is provided with a control component for controlling the re-grinding frequency of the toner, a first fixing plate is fixedly connected to the inner wall of the box body, a U-shaped plate is slidably connected to one side inner wall of the box body, a re-grinding component for re-grinding the toner is arranged inside the U-shaped plate, a groove is opened on one side of the first fixing plate, a sliding plate is slidably connected to the inner wall of the groove, two symmetrically arranged second springs are fixedly connected between the bottom of the sliding plate and the bottom inner wall of the groove, a trapezoidal block is fixedly connected to the top of the first fixing plate, an inclined surface is opened on the top of the U-shaped plate, a second fixing plate is fixedly connected to the inner wall of the box body, and a set of filtering components for filtering the toner are arranged between one side inner wall of the box body and the second fixing plate. The re-grinding component includes a first L-shaped plate slidably connected inside the U-shaped plate, two symmetrically arranged compression springs are fixedly connected between the bottom of the first L-shaped plate and the bottom inner wall of the U-shaped plate, a third fixing plate is fixedly connected to the top of the first L-shaped plate. The re-grinding component further includes a second servo motor fixedly connected to one side inner wall of the first L-shaped plate, a second spur gear is fixedly sleeved on the output shaft of the second servo motor, a rack is fixedly connected to one side inner wall of the box body, the rack meshes with the second spur gear, a triangular plate is fixedly connected to one side of the third fixing plate. The re-grinding component further includes a block slidably penetrating inside the first L-shaped plate, one end of the block is fixedly connected to a limiting plate, a same tension spring is fixedly connected between the limiting plate and the first L-shaped plate, the tension spring is sleeved on the block, a clamping groove engaged with the block is opened on one side inner wall of the U-shaped plate, a connecting rod is fixedly connected to one side inner wall of the box body, and a triangular block for cooperating with the limiting plate is fixedly connected to one end of the connecting rod.

2. The grinding and screening device for printer toner production according to claim 1, characterized in that, the control component includes an eccentric plate fixedly sleeved on the outer wall of the second rotating shaft, a single-tooth gear is fixedly sleeved on the outer wall of the second rotating shaft, a first rotating shaft is rotatably connected to one side of the box body, an overrunning clutch is arranged on the outer wall of the first rotating shaft, a first spur gear is arranged on the outer wall of the overrunning clutch, the first spur gear meshes with the single-tooth gear, a pushing plate is fixedly connected to the outer wall of the first spur gear, an elastic switch is arranged on one side of the box body, and the elastic switch is used in cooperation with the pushing plate.

3. The grinding and screening device for printer toner production according to claim 2, characterized in that, The filtering component includes a second L-shaped plate fixedly connected to the inner wall of one side of the box body. A filter screen is slidably connected to one side of the second L-shaped plate. The same first spring is fixedly connected between the filter screen and the second L-shaped plate. A baffle is fixedly connected to the top of the filter screen. A rectangular hole is formed in one side of the box body. A pushing block is fixedly connected to one side of the filter screen. The pushing block slidably penetrates through the rectangular hole and is used in cooperation with the eccentric plate.

4. The grinding and screening device for printer toner production according to claim 3, characterized in that, Both one side of the second fixed plate and the inner wall of one side of the box body are fixedly connected with inclined plates. A plurality of bristles are fixedly connected to the bottom of the inclined plates. The bristles are used in cooperation with the grinding blocks.

5. The usage method of the grinding and screening device for printer toner production according to claim 4, characterized in that, specifically includes the following steps: S1. When grinding is required, put it in through the feed port, start two first servo motors. The output shafts of the first servo motors drive the grinding blocks to rotate. The grinding blocks grind the toner. The arrangement of the bristles facilitates removing the adhered toner. After the toner is ground and filtered through the filter screen, the toner of appropriate size is screened out through the filter screen, and the toner of inappropriate size slides along the surface of the filter screen and enters the inside of the first L-shaped plate through the surface of the trapezoidal block to complete the collection; S2. While the grinding blocks are rotating, they drive the second rotating shaft to rotate. The second rotating shaft drives the eccentric plate to rotate. The eccentric plate pushes the pushing block to move vertically downward. The pushing block drives the filter screen to move vertically downward. The filter screen squeezes the first spring and vibrates continuously to prevent the toner from clogging the filter screen and improve the filtering efficiency; S3. While the second rotating shaft is rotating, it drives the single-tooth gear to rotate. The single-tooth gear slowly drives the first spur gear to rotate. The first spur gear drives the pushing plate to rotate until the pushing plate pushes the elastic switch, thereby starting the second servo motor. Due to the setting of the overrunning clutch, the first spur gear will not reverse, and at the same time, the starting frequency of the second servo motor is adjusted according to the number of teeth of the first spur gear; S4. After the second servo motor is started, the output shaft of the second servo motor drives the second spur gear to rotate. The second spur gear moves vertically upward along the rack, thereby driving the first L-shaped plate and the U-shaped plate to move vertically upward. After the sliding plate has no pressure, it will move vertically upward under the elastic force of the second spring. At this time, the toner will be blocked by the sliding plate and cannot enter temporarily; S5. When the limiting plate moves to a suitable position, the triangular block pushes the limiting plate to move horizontally. The limiting plate drives the clamping block to move horizontally. The clamping block no longer engages with the card slot, so that the first L-shaped plate and the U-shaped plate are no longer engaged. The first L-shaped plate moves vertically upward under the elastic force of the compression spring, so that the first L-shaped plate moves above the U-shaped plate. The toner inside slides down from the surface of the inclined plate and is ground again. The output shaft of the second servo motor reverses and returns to the initial position again.

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