High-precision filling mechanism

Abstract

The invention discloses a high-precision filling mechanism, and relates to the technical field of filling, the high-precision filling mechanism comprises a side frame, the upper end of the side frame is fixedly connected with a first electric push rod, the output end of the first electric push rod is fixedly connected with a valve, the output end of the valve is fixedly connected with a rubber nozzle, and the side end of the side frame is fixedly connected with an extension frame. And the surface of the extension frame is slidably connected with a first guide rod. After the valve is cut off, the nozzle excess material is sucked back into the rubber spray head, so that inaccurate filling caused by continuous dripping after filling is avoided, the cleaning roller is driven to clean the surface of the rubber spray head in cooperation with regular downward pressing of the downward pressing disc, and the situation that liquid left on the surface of the spray head forms crystals and stains after being dried and pollutes follow-up filling materials is avoided; and meanwhile, the problems of deterioration, bacterium breeding and the like caused by long-term retention of the liquid in the spray head are prevented by extruding back-sucked residual liquid in the spray head.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of filling, in particular to a high-precision filling mechanism. BACKGROUND

[0002] The filling mechanism is the core equipment system for realizing automatic quantitative filling of materials in modern industrial production, mainly used for accurately, efficiently and hygienically injecting various materials such as liquids, pastes and powders into different specifications of packaging containers such as bottles, cans, bags and barrels. It is usually composed of material storage and conveying system, filling execution mechanism, container positioning and conveying device, metering control system, sealing and cleaning and disinfection auxiliary units, and can flexibly adopt various filling methods such as gravity type, pressure type, volumetric type, vacuum type and flowmeter type according to the physical and chemical properties of the materials such as viscosity, corrosiveness and easy oxidation, and production needs, to adapt to different scenes from small batch to large-scale continuous production. Its application covers food and beverage, medicine and health, daily chemical industry, petroleum and chemical industry, pesticide and fertilizer, and other key industries, and needs to reduce secondary pollution caused by manual contact, strictly comply with industry hygiene and safety standards, and is an indispensable key equipment to ensure product quality stability, production standardization and scale expansion.

[0003] According to the search of the publication number: CN114987852A, a material distribution mechanism, filling equipment and filling method are disclosed, which includes a material distribution mechanism, filling equipment and filling method, the material distribution mechanism is used for orderly distributing the containers output by the feeding vibration tray, the material distribution mechanism includes a first mounting seat, a material storage flow channel, a material transfer assembly, a distribution plate and a distribution tooth, the material transfer assembly is used for transferring the containers slid out of the feeding vibration tray to the material storage flow channel in sequence; the distribution tooth is arranged on the distribution plate and reciprocates within a preset stroke, etc. Technical scheme, which utilizes the material distribution mechanism, the filling method utilizes the filling equipment including the material distribution mechanism, can orderly distribute the containers output by the feeding vibration tray, forms a gap between adjacent containers, can load multiple groups of containers at a time, and does not affect the processing of the containers by subsequent workpieces, etc. Technical effect is achieved. However, the common filling device, the residual liquid in the nozzle will continue to drip due to gravity after the filling is completed, which will cause the actual filling amount to exceed the set value. The nozzle surface will be attached with residual material after long-term filling, the residual liquid may breed bacteria, pollute the material for next filling, cause the product to deteriorate, and the material will be oxidized and solidified after contacting with oxygen, which will be long-term retained in the nozzle, causing blockage of the nozzle, abnormal pressure, even damage to the valve and reduction of valve sensitivity, resulting in reduction of filling precision and inability to ensure that the filling amount matches the set value each time.

[0004] Therefore, the present application provides a high-precision filling mechanism. SUMMARY

[0005] To achieve the above object, the present application is implemented by the following technical solutions: A high-precision filling mechanism, comprising a side frame, the upper end of the side frame is fixedly connected with a first electric push rod, the output end of the first electric push rod is fixedly connected with a valve, the output end of the valve is fixedly connected with a rubber nozzle, the side end of the side frame is fixedly connected with an extension frame, the surface of the extension frame is slidably connected with a first guide rod, the lower end of the first guide rod is fixedly connected with a pressing disc, the lower end of the extension frame is fixedly connected with a first spring, the end of the first spring is fixedly connected with the pressing disc, the inside of the pressing disc is provided with a pressing groove, the pressing disc is slidably connected with a cleaning roller through the pressing groove, the side end of the extension frame is fixedly connected with a track disc, the end of the cleaning roller is slidably connected with the track disc, and the cleaning roller is matched with the track disc.

[0006] As a preferred embodiment, the upper end of the side frame is fixedly connected with a second electric push rod, the output end of the second electric push rod is fixedly connected with a moving table, the lower end of the moving table is fixedly connected with a sliding column, the side end of the side frame is rotatably connected with a force rod, the surface of the force rod is provided with a sliding groove, and the force rod is slidably connected with the sliding column through the sliding groove.

[0007] The technical effect of the above further scheme is that the force rod is arranged to rotate along the contact point with the side frame.

[0008] As a preferred embodiment, the upper end of the force rod is fixedly connected with a pull rope, and the upper end of the pull rope is fixedly connected with the pressing disc.

[0009] The technical effect of the above further scheme is that the force rod is arranged to rotate to drive the pressing disc to descend.

[0010] As a preferred embodiment, the lower end of the side frame is fixedly connected with a base frame, the upper end of the base frame is fixedly connected with a feeding table, the upper end of the base frame is fixedly connected with a control platform, and the upper end of the base frame is provided with a weighing platform.

[0011] The technical effect of the above further scheme is that the receiving barrel can be placed on the weighing platform for filling operation.

[0012] As a preferred embodiment, the upper end of the base frame is fixedly connected with a sliding rod, the surface of the sliding rod is slidably connected with a sliding table, and the side end of the sliding table is rotatably connected with a brush roller.

[0013] The technical effect of the above further scheme is that the brush roller is arranged to periodically clean the surface of the weighing platform at regular intervals, so that too much dirt is prevented from adhering to the surface of the weighing platform and affecting the filling precision.

[0014] As a preferred implementation form, the upper end of the base frame is fixedly connected with a rack, the inner wall of the sliding table is rotatably connected with a driving gear, the side end of the driving gear is fixedly connected with a first transmission gear, the inner wall of the sliding table is rotatably connected with a second transmission gear and a driven gear, the surface of the driving gear is engaged with the rack, the surface of the first transmission gear is engaged with the second transmission gear, the surface of the second transmission gear is engaged with the driven gear, and the side end of the driven gear is fixedly connected with the brush roller.

[0015] The technical effect of the above further scheme is that the brush roller is moved while rotating when the sliding table moves, thereby enhancing the cleaning effect on the surface of the weighing platform.

[0016] As a preferred implementation form, the surface of the sliding table is fixedly connected with a traction rope, the surface of the base frame is provided with a first traction pulley, the surface of the side frame is provided with a second traction pulley, the surface of the traction rope is attached to the first traction pulley and the second traction pulley respectively, and the end of the traction rope is fixedly connected with the moving table.

[0017] The technical effect of the above further scheme is that the moving table is lifted to move the sliding table.

[0018] As a preferred implementation form, the side end of the sliding table is fixedly connected with a reset rope, the surface of the side frame is provided with a reset pulley, the surface of the reset rope is attached to the reset pulley, the inner wall of the side frame is fixedly connected with a second guide rod, the surface of the second guide rod is slidingly connected with a reset plate, the lower end of the reset plate is fixedly connected with a second spring, the fixed end of the second spring is fixedly connected with the side frame, and the end of the reset rope is fixedly connected with the reset plate.

[0019] The technical effect of the above further scheme is that when the traction rope stops pulling the sliding table, the sliding table is automatically reset, thereby realizing the periodic and cyclic cleaning operation of the surface of the weighing platform.

[0020] The application provides a high-precision filling mechanism. After the valve is closed, the excess material in the nozzle is sucked back into the rubber nozzle, so that the inaccuracy caused by continuous dripping after filling is avoided, and the cleaning roller is driven to clean the surface of the rubber nozzle by periodically pressing the lower pressing plate, so that the liquid remaining on the surface of the nozzle is prevented from drying to form crystals and stains, which pollute the subsequent filling material.

[0021] The weighing platform is cleaned periodically by rotating and wiping the surface of the weighing platform by the brush roller, so that the surface of the weighing platform is prevented from being too dirty, which affects the calculation of the filling weight, so that the filling amount cannot meet the standard, external factors are excluded from the calculation of the filling, and the filling precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of the overall structure of the high-precision filling mechanism of the application; Figure 2 It is a schematic view of the track disc and related parts structure of the high-precision filling mechanism of the application; Figure 3 It is a high-precision filling mechanism of the application Figure 2 It is an enlarged structure schematic view of A in the middle; Figure 4 It is a schematic view of the lower pressing disc and related parts structure of the high-precision filling mechanism of the application; Figure 5 It is a schematic view of the weighing platform and related parts structure of the high-precision filling mechanism of the application; Figure 6 It is a high-precision filling mechanism of the application Figure 5 It is an enlarged structure schematic view of B in the middle; Figure 7 It is a schematic view of the first traction sheave and related parts structure of the high-precision filling mechanism of the application; Figure 8 It is a schematic view of the reset plate and related parts structure of the high-precision filling mechanism of the application.

[0023] Explanation of reference signs: 1, side frame; 2, first electric push rod; 3, valve; 4, rubber nozzle; 5, extension frame; 6, first guide rod; 7, lower pressing disc; 8, first spring; 9, lower pressing groove; 10, cleaning roller; 11, track disc; 12, second electric push rod; 13, moving table; 14, slide column; 15, force rod; 16, sliding groove; 17, pull rope; 18, base frame; 19, feeding table; 20, control platform; 21, weighing platform; 22, sliding rod; 23, sliding table; 24, brush roller; 25, rack; 26, driving gear; 27, first transmission gear; 28, second transmission gear; 29, driven gear; 30, traction rope; 31, first traction sheave; 32, second traction sheave; 33, reset rope; 34, reset sheave; 35, second guide rod; 36, reset plate; 37, second spring. DETAILED DESCRIPTION

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application. Embodiments

[0025] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , a high-precision filling mechanism includes a side frame 1, the upper end of the side frame 1 is fixedly connected with a first electric push rod 2, the output end of the first electric push rod 2 is fixedly connected with a valve 3, the valve 3 is a back-suction type valve, which performs back-suction operation on the remaining material in the nozzle when filling is stopped, the valve 3 controls the opening and closing of filling, the output end of the valve 3 is fixedly connected with a rubber nozzle 4, a flowmeter is installed between the valve 3 and the rubber nozzle 4, the rubber nozzle 4 is long and hollow, the side end of the side frame 1 is fixedly connected with an extension frame 5, the surface of the extension frame 5 is slidingly connected with a first guide rod 6, the inner circumference of the extension frame 5 at this point is equal to the outer circumference of the first guide rod 6, the lower end of the first guide rod 6 is fixedly connected with a pressing disc 7, the lower end of the extension frame 5 is fixedly connected with a first spring 8, the end of the first spring 8 is fixedly connected with the pressing disc 7, the first spring 8 provides a pulling force to reset the pressing disc 7 after it is lowered, the inside of the pressing disc 7 is provided with a pressing groove 9, the pressing disc 7 is slidingly connected with a cleaning roller 10 through the pressing groove 9, the pressing groove 9 is matched with the cleaning roller 10, the cleaning roller 10 can slide left and right in the inside of the pressing disc 7 through the pressing groove 9, the side end of the extension frame 5 is fixedly connected with a track disc 11, the end of the cleaning roller 10 is slidingly connected with the track disc 11, the cleaning roller 10 is matched with the track disc 11, the groove on the surface of the track disc 11 makes the cleaning roller 10 approach and press the rubber nozzle 4 along the groove when it is lowered, then the liquid in the rubber nozzle 4 is squeezed out and the surface of the rubber nozzle 4 is cleaned and wiped at the same time, the valve 3 is set to back-suction after it is closed, at this time the rubber nozzle 4 changes from expansion to contraction, and the liquid is back-sucked into the rubber nozzle 4, thereby avoiding the inaccuracy of filling caused by continuous dripping after filling is completed, and the pressing disc 7 is pressed regularly, the cleaning roller 10 is constrained to slide along the inner wall of the track disc 11, thereby cleaning the surface of the rubber nozzle 4, avoiding the formation of crystals and stains on the surface of the nozzle due to the drying of residual liquid, which pollutes the subsequent filling material, and the residual liquid is squeezed out to prevent the liquid from being long-term retained in the nozzle to cause deterioration and bacterial growth.

[0026] As shown in Figure 1 -Figure 3 As shown: the upper end of the side frame 1 is fixedly connected with the second electric push rod 12, the output end of the second electric push rod 12 is fixedly connected with the moving table 13, the lifting of the moving table 13 is controlled through the second electric push rod 12, the lower end of the moving table 13 is fixedly connected with the slide column 14, the side end of the side frame 1 is rotatably connected with the force bar 15, the side frame 1 is adapted to the force bar 15, the surface of the force bar 15 is provided with the sliding groove 16, the force bar 15 is slidably connected with the slide column 14 through the sliding groove 16, the sliding groove 16 is adapted to the slide column 14, when the second electric push rod 12 is started, the moving table 13 is lifted, thereby the force bar 15 is driven to rotate along the contact point with the side frame 1 through the slide column 14.

[0027] As shown: Figure 1 - Figure 3 As shown: the upper end of the force bar 15 is fixedly connected with the pull rope 17, the upper end of the pull rope 17 is fixedly connected with the pressing disc 7, when the force bar 15 rotates, one end of the surface of the force bar 15 provided with the sliding groove 16 rises, and the other end fixedly connected with the pull rope 17 descends, thereby the pressing disc 7 is driven to descend along the contact surface of the first guide rod 6 and the extension frame 5 through the pull rope 17.

[0028] As shown: Figure 1 As shown: the lower end of the side frame 1 is fixedly connected with the base frame 18, the upper end of the base frame 18 is fixedly connected with the discharging table 19, the receiving barrel can be placed on the discharging table 19 to slide, the upper end of the base frame 18 is fixedly connected with the control platform 20, the operation of the device is controlled through the control platform 20, the upper end of the base frame 18 is provided with the weighing platform 21, the weighing sensor is installed on the weighing platform 21, thereby the receiving barrel placed on the surface of the weighing platform 21 is weighed, the filling weight is monitored in real time, thereby the precise filling operation is realized in cooperation with the flow meter, through the setting, the receiving barrel can be placed on the weighing platform 21 to perform the filling operation.

[0029] As shown: Figure 5 - Figure 6 As shown: the upper end of the base frame 18 is fixedly connected with the slide rod 22, the surface of the slide rod 22 is slidably connected with the slide table 23, the outer circumference of the slide rod 22 is equal to the inner circumference of the slide table 23, the side end of the slide table 23 is rotatably connected with the brush roller 24, the inner circumference of the slide table 23 is equal to the outer circumference of the brush roller 24, when the slide table 23 moves, the brush roller 24 is driven to move, thereby the brush roller 24 periodically cleans the surface of the weighing platform 21 in time, the filling weight calculation is not affected by too much dirt attached to the surface of the weighing platform 21, thereby the filling precision is reduced.

[0030] As shown: Figure 5 - Figure 6As shown: A rack 25 is fixedly connected to the upper end of the base frame 18. A driving gear 26 is rotatably connected to the inner wall of the slide 23. The inner circumference of the slide 23 at this location is equal to the outer circumference of the driving gear 26 at this location. A first transmission gear 27 is fixedly connected to the side end of the driving gear 26. A second transmission gear 28 and a driven gear 29 are rotatably connected to the inner wall of the slide 23. The slide 23 is adapted to the second transmission gear 28 and the driven gear 29 respectively. The surface of the driving gear 26 meshes with the rack 25. The surface of the first transmission gear 27 meshes with the second transmission gear 28. The second transmission gear 28 is adapted to the driven gear 29. The second transmission gear 28 and the driven gear 29 are adapted to each other. The side end of the driven gear 29 is fixedly connected to the brush roller 24. When the slide table 23 moves, the driving gear 26, which meshes with the rack 25, rotates with the inside of the slide table 23, thereby driving the first transmission gear 27 to rotate. When the first transmission gear 27 rotates, it drives the second transmission gear 28 to rotate, which in turn drives the driven gear 29 to rotate. When the driven gear 29 rotates, it drives the brush roller 24 to rotate, so that when the slide table 23 moves, it drives the brush roller 24 to move and rotate at the same time, which enhances the cleaning effect on the surface of the symmetrical weighing platform 21.

[0031] like Figure 7 As shown: A traction rope 30 is fixedly connected to the surface of the slide 23. The slide 23 is moved by the traction rope 30. The surface of the base frame 18 is provided with a first traction pulley 31, and the surface of the side frame 1 is provided with a second traction pulley 32. The surface of the traction rope 30 is in contact with the first traction pulley 31 and the second traction pulley 32 respectively. The traction rope 30 is adapted to the first traction pulley 31 and the second traction pulley 32. The pulling direction of the traction rope 30 is changed by the first traction pulley 31 and the second traction pulley 32. The end of the traction rope 30 is fixedly connected to the moving platform 13. When the moving platform 13 is raised, the traction rope 30 is pulled to move, and then the slide 23 is moved outward by the action of the first traction pulley 31 and the second traction pulley 32.

[0032] like Figure 7 - Figure 8As shown: the side end of the sliding table 23 is fixedly connected with a reset rope 33, the surface of the side frame 1 is provided with a reset pulley 34, the surface of the reset rope 33 is attached to the reset pulley 34, the reset rope 33 is adapted to the reset pulley 34, the inner wall of the side frame 1 is fixedly connected with a second guide rod 35, the surface of the second guide rod 35 is slidingly connected with a reset plate 36, the outer circumference of the second guide rod 35 at this point is equal to the inner circumference of the reset plate 36 at this point, the rack 25 is provided with two and is symmetrically arranged with the midline of the reset plate 36, so as to ensure the balance of the reset plate 36 while guiding the movement of the reset plate 36, the lower end of the reset plate 36 is fixedly connected with a second spring 37, the fixed end of the second spring 37 is fixedly connected with the side frame 1, the end of the reset rope 33 is fixedly connected with the reset plate 36, when the sliding table 23 moves, the reset plate 36 is pulled downward by the reset rope 33 to compress the second spring 37, when the traction rope 30 stops pulling the sliding table 23, the reset plate 36 is driven by the compressed second spring 37 to move upward along the second guide rod 35, so that the sliding table 23 is automatically reset, thereby realizing the operation of periodically cleaning the surface of the weighing platform 21.

[0033] Working principle: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown, the high-precision filling mechanism, when in use, moves the filling container and the discharging table 19 onto the weighing platform 21, drives the valve 3 downward by the first electric push rod 2, and fills it by using the rubber nozzle 4, rises while filling, and the flow meter and the weighing sensor monitor the flow and weight in real time, and the valve 3 is closed when any one reaches the set value, and the filled container is taken out for the next round of filling. The valve 3 is back-sucked after being closed, at which time the rubber nozzle 4 changes from expansion to contraction, and the liquid is also back-sucked into the rubber nozzle 4, thereby avoiding the inaccuracy caused by continued dripping after filling is completed. When the second electric push rod 12 is started, it drives the moving table 13 to rise, thereby driving the force rod 15 to rotate along the contact point with the side frame 1 through the slide column 14. When the force rod 15 rotates, one end of the surface of the force rod 15, which is provided with a sliding groove 16, rises, and the other end, which is fixedly connected with the pull rope 17, descends, thereby driving the downward pressing disc 7 to descend along the contact surface of the first guide rod 6 and the extension frame 5 through the pull rope 17, and the downward pressing disc 7 is periodically pressed downward, thereby constraining the cleaning roller 10 to slide along the inner wall of the track disc 11, and cleaning the surface of the rubber nozzle 4, thereby avoiding the formation of crystals and stains on the surface of the nozzle due to the drying of residual liquid, which pollutes the subsequent filling material. At the same time, by extruding the residual liquid, the problems of deterioration and bacterial growth caused by long-term retention of liquid in the nozzle are prevented. When the mobile station 13 is pulled up, the traction rope 30 is moved, and then the slide table 23 is moved outward through the action of the first traction pulley 31 and the second traction pulley 32. When the slide table 23 is moved, the driving gear 26 engaged with the rack 25 rotates inside the slide table 23, thereby driving the first transmission gear 27 to rotate. When the first transmission gear 27 rotates, the second transmission gear 28 is driven to rotate, and then the driven gear 29 is driven to rotate. When the driven gear 29 rotates, the brush roller 24 is driven to rotate, so that the brush roller 24 moves and rotates at the same time when the slide table 23 moves, thereby enhancing the cleaning effect on the surface of the weighing platform 21. The surface of the weighing platform 21 is prevented from being attached with too much dirt, thereby avoiding affecting the filling weight calculation and reducing the filling precision. When the slide table 23 moves, the reset plate 36 is pulled down by the reset rope 33, thereby compressing the second spring 37. When the traction rope 30 stops pulling the slide table 23, the reset plate 36 is driven to move upward along the second guide rod 35 by the compressed second spring 37, so that the slide table 23 is automatically reset, thereby realizing the operation of periodically cleaning the surface of the weighing platform 21.

[0034] The above is only the preferred embodiment of the present application, and does not limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiment without departing from the technical solution of the present application still belongs to the protection scope of the present application.

Claims

1. A high-precision filling mechanism, comprising a side frame (1), characterized in that: The upper end of the side frame (1) is fixedly connected to a first electric push rod (2), the output end of the first electric push rod (2) is fixedly connected to a valve (3), the output end of the valve (3) is fixedly connected to a rubber nozzle (4), the side end of the side frame (1) is fixedly connected to an extension frame (5), the surface of the extension frame (5) is slidably connected to a first guide rod (6), the lower end of the first guide rod (6) is fixedly connected to a lower pressure plate (7), the lower end of the extension frame (5) is fixedly connected to a first spring (8), the end of the first spring (8) is fixedly connected to the lower pressure plate (7), the lower pressure plate (7) has a lower pressure groove (9) inside, the lower pressure plate (7) is slidably connected to a cleaning roller (10) through the lower pressure groove (9), the side end of the extension frame (5) is fixedly connected to a track plate (11), and the end of the cleaning roller (10) is slidably connected to the track plate (11).

2. The high-precision filling mechanism according to claim 1, characterized in that: The upper end of the side frame (1) is fixedly connected to a second electric push rod (12), the output end of the second electric push rod (12) is fixedly connected to a moving platform (13), the lower end of the moving platform (13) is fixedly connected to a sliding column (14), the side end of the side frame (1) is rotatably connected to a force rod (15), the surface of the force rod (15) is provided with a sliding groove (16), and the force rod (15) is slidably connected to the sliding column (14) through the sliding groove (16).

3. The high-precision filling mechanism according to claim 2, characterized in that: The upper end of the lever (15) is fixedly connected to a pull rope (17), and the upper end of the pull rope (17) is fixedly connected to the lower pressure plate (7).

4. The high-precision filling mechanism according to claim 1, characterized in that: The lower end of the side frame (1) is fixedly connected to the base frame (18), the upper end of the base frame (18) is fixedly connected to the feeding platform (19), the upper end of the base frame (18) is fixedly connected to the control platform (20), and the upper end of the base frame (18) is provided with a weighing platform (21).

5. A high-precision filling mechanism according to claim 4, characterized in that: The upper end of the base frame (18) is fixedly connected to a slide rod (22), the surface of the slide rod (22) is slidably connected to a slide table (23), and the side end of the slide table (23) is rotatably connected to a brush roller (24).

6. A high-precision filling mechanism according to claim 5, characterized in that: A rack (25) is fixedly connected to the upper end of the base frame (18). A drive gear (26) is rotatably connected to the inner wall of the slide (23). A first transmission gear (27) is fixedly connected to the side end of the drive gear (26). A second transmission gear (28) and a driven gear (29) are rotatably connected to the inner wall of the slide (23). The surface of the drive gear (26) meshes with the rack (25). The surface of the first transmission gear (27) meshes with the second transmission gear (28). The surface of the second transmission gear (28) meshes with the driven gear (29). The side end of the driven gear (29) is fixedly connected to the brush roller (24).

7. A high-precision filling mechanism according to claim 5, characterized in that: The surface of the slide (23) is fixedly connected to a traction rope (30), the surface of the base frame (18) is provided with a first traction pulley (31), the surface of the side frame (1) is provided with a second traction pulley (32), the surface of the traction rope (30) is in contact with the first traction pulley (31) and the second traction pulley (32) respectively, and the end of the traction rope (30) is fixedly connected to the moving platform (13).

8. A high-precision filling mechanism according to claim 5, characterized in that: A reset rope (33) is fixedly connected to the side end of the slide (23). A reset pulley (34) is provided on the surface of the side frame (1). The surface of the reset rope (33) is in contact with the reset pulley (34). A second guide rod (35) is fixedly connected to the inner wall of the side frame (1). A reset plate (36) is slidably connected to the surface of the second guide rod (35). A second spring (37) is fixedly connected to the lower end of the reset plate (36). The fixed end of the second spring (37) is fixedly connected to the side frame (1). The end of the reset rope (33) is fixedly connected to the reset plate (36).

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