Feeding device

Abstract

The utility model provides a feeding device, which belongs to the technical field of blanking equipment, and comprises a stock bin, a quantifying roller, a first compression roller and a driving component, and the stock bin is provided with a feed port and a discharge port; a plurality of quantitative grooves are formed in the circumferential direction of the quantitative roller, and the quantitative roller is arranged below the discharging opening; the first pressing roller is arranged below the discharging port, a material storage area is formed among the discharging port, the quantifying roller and the first pressing roller, and the first pressing roller is suitable for extruding powder in the quantifying groove; the driving assembly is connected with the quantifying roller, and the quantifying roller rotates so that powder in the quantifying groove can be sent out after passing through the first pressing roller. Through the arrangement of the first compression roller and the formation of the material storage area, powder firstly falls into the material storage area from the discharge port, the powder in the quantitative groove is in contact with the first compression roller before being sent out, the first compression roller extrudes and compacts the powder, and through the pre-pressing of the first compression roller, the uniformity of the density of the powder in the quantitative roller is improved; and therefore, the uniformity and the precision of feeding are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding equipment, in particular to a feeding device. Background Art

[0002] In the field of lithium-ion battery manufacturing, dry electrode process is an emerging lithium-ion battery manufacturing method that has received increasing attention. Compared with the traditional wet process, the dry process has unique advantages.

[0003] In the preparation of dry electrodes, for the powder feeding system, it is necessary to evenly spread the fiberized material in the pressing roller. Generally, a storage bin is provided, and the powder is added into the storage bin, and then the powder is spread in the pressing roller from the storage bin. In order to realize quantitative feeding, quantitative feeding is realized by using a quantitative roller at this stage. However, the powder is directly sprinkled out after being sprinkled into the quantitative roller, resulting in poor uniformity of the powder density in the quantitative roller, resulting in insufficient uniformity of the feeding uniformity.

[0004] Therefore, it is necessary to design a feeding device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a feeding device with better powder material density uniformity in a quantitative roller.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A feeding device, comprising:

[0008] A silo is arranged on the frame, and the silo has a feed inlet and a discharge outlet;

[0009] A metering roller, which is provided with a plurality of metering grooves in its circumference, and the metering roller is arranged below the discharge port;

[0010] A first pressing roller is arranged below the discharge port, a material storage area is formed between the discharge port, the quantitative roller and the first pressing roller, and the first pressing roller squeezes the powder in the quantitative groove;

[0011] The driving assembly is connected to the metering roller, and drives the metering roller to rotate so that the powder in the metering groove is sent out after passing through the first pressing roller.

[0012] Optionally, a first driving member is further included, and the first driving member is used to drive the first pressing roller to rotate, and the rotation direction of the first pressing roller is opposite to the rotation direction of the metering roller.

[0013] Optionally, it further comprises an adjusting component, which is arranged on the frame, and the adjusting component is connected to the metering roller to adjust the distance between the metering roller and the first pressing roller.

[0014] Optionally, the metering roller is rotatably arranged on an adjustment plate, and the adjustment plate is provided with a plurality of first screw holes;

[0015] The adjustment component comprises:

[0016] A mounting plate, arranged on the frame, wherein a plurality of second screw holes are arranged on the mounting plate;

[0017] An adjusting screw passes through the first screw hole and the first screw hole in sequence to connect the adjusting mounting plate and the adjusting plate.

[0018] Optionally, a stirring component is further included, and the stirring component includes:

[0019] A stirring shaft, drivingly connected to the driving assembly;

[0020] The stirring blade is arranged on the stirring shaft and is arranged in the silo near the discharge port.

[0021] Optionally, the driving assembly includes a second driving member and a synchronous belt, the second driving member is arranged on the frame, and the second driving member is connected to the metering roller and the stirring shaft through the synchronous belt.

[0022] Optionally, a scraper assembly is further included, wherein the scraper assembly is arranged at a position after the material falls in the rotation direction of the metering roller, and the scraper assembly has a scraper member, and the scraper member is always in contact with the outer surface of the metering roller.

[0023] Optionally, the scraper assembly comprises:

[0024] A mounting plate, arranged on the frame;

[0025] A support shaft is arranged on the mounting plate, and the scraper is slidably arranged on the support shaft;

[0026] An elastic member is arranged on the supporting shaft, and the elastic member has an elastic force that enables the scraping member to always abut against the metering roller.

[0027] Optionally, the scraper and the support shaft are connected via a linear bearing.

[0028] Compared with the prior art, the technical solution of the utility model has the following advantages:

[0029] The feeding device provided by the utility model comprises a material bin, a metering roller, a first pressing roller and a driving assembly. The material bin has a feeding port and a discharging port. The metering roller is circumferentially provided with a plurality of metering grooves. The metering roller is arranged below the discharging port. The first pressing roller is arranged below the discharging port. A material storage area is formed between the discharging port, the metering roller and the first pressing roller. The first pressing roller is suitable for squeezing powder in the metering groove. The driving assembly drives the metering roller to rotate so that the powder in the metering groove is sent out after passing through the first pressing roller.

[0030] Through the setting of the first pressing roller and the formation of the storage area, the powder falls into the storage area from the discharge port first. During the rotation of the metering roller, multiple metering grooves sequentially send out the powder in the storage area, and the powder in the metering groove contacts the first pressing roller before being sent out. The first pressing roller squeezes and compacts the powder, and finally sends out the compacted powder. The pre-pressing of the first pressing roller improves the uniformity of the powder density in the metering roller, thereby improving the uniformity and accuracy of the feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic structural diagram of an implementation of a feeding device provided in an embodiment of the present utility model;

[0033] Figure 2 for Figure 1 Schematic diagram of the structure in cross-section;

[0034] Figure 3 for Figure 2 A local enlarged schematic diagram in FIG.

[0035] Figure 4 for Figure 2 A schematic diagram of a partial structure in a top view;

[0036] Figure 5 for Figure 4 A schematic diagram of the structure of the metering roller;

[0037] Figure 6 for Figure 4 A schematic diagram of the structure of the regulating component in FIG.

[0038] Figure 7 for Figure 4 A schematic diagram of the structure of the stirring assembly;

[0039] Figure 8 for Figure 4 A schematic diagram of the structure of the drive component in FIG.

[0040] Fig. 9 for Figure 4 Schematic diagram of the structure of the scraper assembly.

[0041] Description of reference numerals:

[0042] 1. Silo; 2. Frame; 3. Feed inlet; 4. Discharge outlet; 5. Dosing roller; 6. Dosing slot; 7. First pressure roller; 8. Storage area; 9. Drive assembly; 10. Second pressure roller; 11. First drive member; 12. Adjustment plate; 13. First screw hole; 14. Adjustment mounting plate; 15. Second screw hole; 16. Adjustment screw; 17. Stirring assembly; 18. Stirring shaft; 19. Stirring blade; 20. Second drive member; 21. Synchronous belt; 22. Scraper assembly; 23. Scraper member; 24. Scraper mounting plate; 25. Support shaft; 26. Elastic member; 27. Linear bearing; 28. Upper silo body; 29. ​​Lower silo body; 30. Driving wheel; 31. Fixed plate; 32. Adapter plate. DETAILED DESCRIPTION

[0043] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] The feeding device provided in this embodiment is used in the dry process of lithium batteries to discharge powder materials, and can also be used in other processes and equipment that require powder material discharge.

[0048] like Figures 1 to 3 As shown, a specific implementation of the feeding device provided in this embodiment includes a silo 1, a metering roller 5, a first pressure roller 7 and a driving assembly 9, the silo 1 is arranged on a frame 2, and the silo 1 has a feed port 3 and a discharge port 4; a plurality of metering grooves 6 are arranged circumferentially of the metering roller 5, and the metering roller 5 is arranged below the discharge port 4; the first pressure roller 7 is arranged below the discharge port 4, and a storage area 8 is formed between the discharge port 4, the metering roller 5 and the first pressure roller 7, and the first pressure roller 7 squeezes the powder in the metering groove 6; the driving assembly 9 is connected to the metering roller 5, and drives the metering roller 5 to rotate so that the powder in the metering groove 6 is sent out after passing through the first pressure roller 7.

[0049] By setting the first pressing roller 7 and forming the storage area 8, the powder material first falls into the storage area 8 from the discharge port 4. During the rotation of the metering roller 5, the multiple metering grooves 6 send out the powder material in the storage area 8 in turn, and the powder material in the metering grooves 6 contacts the first pressing roller 7 before being sent out. The first pressing roller 7 squeezes and compacts the powder material, and finally sends out the compacted powder material. The pre-pressing of the first pressing roller 7 improves the uniformity of the powder material density in the metering roller, thereby improving the uniformity accuracy of the feeding.

[0050] A specific implementation of the silo 1 is as follows Figure 2 and Figure 3 As shown, the silo 1 includes an upper silo body 28 and a lower silo body 29, the upper silo body 28 and the lower silo body 29 are connected, the top of the upper silo body 28 is provided with a feed port 3, and the lower silo body 29 is provided with a discharge port 4. The upper silo body 28 is an inverted cone structure to facilitate the falling of powder, and the cross-section of the lower silo body 29 is a semicircular structure.

[0051] Specifically, the silo 1 and the metering roller 5 are arranged along the outer periphery of the first pressure roller 7 to facilitate the formation of the storage area 8; the storage area 8 is a triangular area, the size of the discharge port 4 is adapted to the size of the opposite side of the storage area 8, and at least two metering grooves 6 on the metering roller 5 are simultaneously located in the storage area 8 to achieve continuous feeding.

[0052] A specific implementation of the quantitative roller 5 is as follows Figure 3As shown, the quantitative groove 6 is an arc structure, which is convenient for uniform material feeding and smooth subsequent material removal, and there is an arc transition between two adjacent quantitative grooves 6. In addition, as an alternative embodiment, the cross-section of the quantitative groove 6 is a triangular structure or a trapezoidal structure.

[0053] Specifically, the first pressing roller 7 is suitable for cooperating with the second pressing roller 10, and the second pressing roller 10 rotates relative to the first pressing roller 7, and the powder delivered from the storage area 8 falls between the first pressing roller 7 and the second pressing roller 10. The first pressing roller 7 and the second pressing roller 10 further squeeze the quantitatively delivered powder, and the first pressing roller 7 and the quantitative roller 5 perform pre-pressing, and there is no need to set an additional pre-pressing roller, which saves structure and is more compact.

[0054] Specifically, the first pressing roller 7 and the second pressing roller 10 are equal in size and arranged in parallel, and the metering roller 5 is arranged between the first pressing roller 7 and the second pressing roller 10 so that the discharge direction of the storage area 8 is arranged relative to the first pressing roller 7 and the second pressing roller 10.

[0055] like Figure 1 As shown, the feeding device provided in this embodiment also includes a first driving member 11, which is used to drive the first pressure roller 7 and the second pressure roller 10 to rotate relative to each other, and the rotation direction of the first pressure roller 7 is opposite to the rotation direction of the metering roller 5.

[0056] The first driving member 11 is disposed on the frame 2 , and there are two first driving members 11 , which respectively drive the first pressing roller 7 and the second pressing roller 10 ; specifically, the first driving member 11 is a driving motor.

[0057] like Figures 4 to 6 As shown, the feeding device provided in this embodiment also includes an adjustment component, which is arranged on the frame 2. The adjustment component is connected to the metering roller 5 to adjust the distance between the metering roller 5 and the first pressing roller 7. By adjusting the distance between the metering roller 5 and the first pressing roller 7, that is, adjusting the size of the roller gap between the metering roller 5 and the first pressing roller 7, the outlet size of the storage area 8 and the feeding amount are adjusted. Specifically, when the metering roller 5 is in contact with the first pressing roller 7, the volume of the powder in the metering slot 6 is only equal to the volume of the metering slot 6; when the distance between the metering roller 5 and the first pressing roller 7 increases, the volume of the powder transported by the metering slot 6 is equal to the volume of the metering slot 6 + the amount of powder stored in the space between the metering slot 6 and the first pressing roller 7.

[0058] like Figure 5 and Figure 6As shown, in the feeding device provided in this embodiment, the metering roller 5 is rotatably set on the adjustment plate 12, and a plurality of first screw holes 13 are set on the adjustment plate 12; the adjustment component includes an adjustment mounting plate 14 and an adjustment screw 16, and the adjustment mounting plate 14 is set on the frame 2, and a plurality of second screw holes 15 are set on the adjustment mounting plate 14; the adjustment screw 16 is set to pass through the second screw hole 15 and the first screw hole 13 in sequence to connect the adjustment mounting plate 14 and the adjustment plate 12.

[0059] Specifically, the adjustment plate 12 is connected to the frame 2 via a waist-shaped groove, which is convenient for fixation after position adjustment and improves the stability of the adjustment plate 12 and the metering roller 5 after installation; there is a moving space between the adjustment mounting plate 14 and the adjustment plate 12, which is convenient for the movement of the adjustment plate 12; the adjustment mounting plate 14 is fixedly connected to the frame 2 via screws, and the adjustment mounting plate 14 is an inverted U-shaped structure.

[0060] In addition, as an alternative embodiment, the adjustment component is an electric adjustment component, which can be a linear module set on the frame 2, and the output end of the linear module is connected to the adjustment plate 12 to drive the adjustment plate 12 to move up and down.

[0061] like Figure 4 and Figure 7 As shown, the feeding device provided in this embodiment further includes a stirring assembly 17, the stirring assembly 17 includes a stirring shaft 18 and a stirring blade 19, the stirring shaft 18 is in transmission connection with the driving assembly 9; the stirring blade 19 is arranged on the stirring shaft 18, and is arranged in the silo 1 near the discharge port 4. By setting the stirring blade 19, the powder can be broken up so that it is evenly present in the silo 1, and the powder agglomeration is prevented to cause uneven discharge.

[0062] Specifically, the stirring blade 19 is rotatably arranged in the lower bin body 29, and the size of the stirring blade 19 is adapted to the size of the lower bin body 29, so as to facilitate all-round stirring; the stirring blade 19 is a U-shaped structure, and the short rod of the U-shaped structure is connected to the stirring shaft 18, and the long rod between the two short rods is arranged parallel to the discharge port 4, and multiple stirring blades 19 are arranged at intervals along the length direction of the stirring shaft 18, and there is a small gap between adjacent stirring blades 19, so that stirring omissions will not occur.

[0063] like Figure 4 and Figure 8 As shown, the feeding device provided in this embodiment, the driving assembly 9 includes a second driving member 20 and a synchronous belt 21, the second driving member 20 is arranged on the frame 2, the second driving member 20 is connected to the metering roller 5 and the stirring shaft 18 through the synchronous belt 21, and the metering roller 5 and the stirring shaft 18 are synchronously driven by the synchronous belt 21, which reduces the setting of the driving member and has a simple structure.

[0064] Specifically, the second driving member 20 includes a servo motor and a reducer, the input shaft of the reducer is connected to the output shaft of the servo motor, a driving wheel 30 is arranged on the output shaft of the reducer, and driven wheels are arranged at the end of the metering roller 5 and the end of the stirring shaft 18, and the driven wheel and the driving wheel 30 are connected by a synchronous belt 21.

[0065] In addition, as an alternative embodiment, the synchronous belt 21 may not be provided, and two second driving members 20 may be provided to drive the metering roller 5 and the stirring shaft 18 respectively.

[0066] like Figure 4 and Fig. 9 As shown, the feeding device provided in this embodiment also includes a scraper assembly 22, and the scraper assembly 22 is arranged at the position after the material falls in the rotation direction of the metering roller 5. The scraper assembly 22 has a scraper member 23, and the scraper member 23 is always in contact with the outer surface of the metering roller 5 to remove the material from the metering roller 5 at the end of feeding, effectively remove the residual powder stuck on the metering roller 5, avoid the powder in the metering groove 6 from sticking more and more, and ensure that the subsequent feeding amount is basically consistent each time.

[0067] Specifically, the scraper assembly 22 is arranged on the frame 2. Figure 3 As shown in the middle direction, the metering roller 5 rotates in the direction shown in the figure, and the scraper assembly 22 is arranged on the left side of the metering roller 5. The metering roller 5 rotates away from the storage area 8 to unload the material, and the metering trough 6 after unloading is completed passes through the scraper assembly 22 for material removal and cleaning.

[0068] like Fig. 9 As shown, the feeding device provided in this embodiment, the scraper assembly 22 includes a scraper mounting plate 24, a support shaft 25 and an elastic member 26, the scraper mounting plate 24 is arranged on the frame 2; the support shaft 25 is arranged on the scraper mounting plate 24, and the scraper member 23 is slidably arranged on the support shaft 25; the elastic member 26 is arranged on the support shaft 25, and the elastic member 26 has an elastic force that makes the scraper member 23 always abut against the metering roller 5.

[0069] The setting of the elastic member 26 ensures that the scraper member 23 always abuts against the metering roller 5, ensures that the scraper member 23 cleans every part of the metering roller 5, and effectively removes the residual powder; and the setting of the elastic member 26 enables the position of the scraper member 23 to be automatically adjusted with the rotation of the metering groove 6, without the need to set up a complex electric drive, and the structure is simple.

[0070] Specifically, the elastic member 26 is a spring; there are multiple support shafts 25, which are evenly distributed on the scraper mounting plate 24, and the length of the scraper member 23 is adapted to the length of the quantitative groove 6 to achieve all-round material removal.

[0071] Specifically, the scraper assembly 22 also includes a fixed plate 31, which is slidably set on the support shaft 25. The scraper member 23 is fixed to the fixed plate 31 by bolts, which facilitates the disassembly and installation of the scraper member 23; the scraper mounting plate 24 can be directly fixed on the frame 2, and can also be connected to the frame 2 through an adapter plate 32.

[0072] like Fig. 9 As shown, in the feeding device provided in this embodiment, the scraper 23 and the support shaft 25 are connected by a linear bearing 27. The arrangement of the linear bearing 27 reduces the friction and wear of the fixed plate 31 during the movement on the support shaft 25, thereby achieving smooth movement. Specifically, the linear bearing 27 is a sliding linear bearing. In addition, as an alternative embodiment, the linear bearing 27 may not be arranged, and a through hole may be arranged on the fixed plate 31, and the fixed plate 31 may be slidably arranged on the support shaft 25 through the through hole.

[0073] The specific implementation of the scraper 23 includes: a scraper plate, a scraper brush and a scraper sheet. Different scraper modes are selected according to different situations, which has wide practicality.

[0074] Working process of the feeding device: the powder enters the silo 1 through the feed port 3, is stirred and dispersed under the action of the stirring component 17, and the dispersed powder enters the storage area 8 through the discharge port 4. The metering roller 5 rotates under the action of the driving component 9, and the powder in the metering groove 6 is pre-pressed after passing through the first pressing roller 7, and then falls between the first pressing roller 7 and the second pressing roller 10 for re-extrusion;

[0075] After delivering the powder, the quantitative trough 6 passes through the scraper 23. Under the action of the elastic member 26, the scraper 23 removes the material and cleans the quantitative trough 6. After cleaning, the quantitative trough 6 continues to rotate into the storage area 8 to receive the powder, and the receiving of powder, delivery of powder and cleaning of the quantitative trough 6 are completed in sequence.

[0076] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present utility model.

Claims

1. A feeding device, characterized in that: include: A silo (1) is arranged on a frame (2), wherein the silo (1) has a feed inlet (3) and a discharge outlet (4); A metering roller (5) having a plurality of metering grooves (6) arranged in a circumferential direction thereof, wherein the metering roller (5) is arranged below the discharge port (4); A first pressing roller (7) is arranged below the discharge port (4), a material storage area (8) is formed between the discharge port (4), the metering roller (5) and the first pressing roller (7), and the first pressing roller (7) squeezes the powder in the metering groove (6); A driving assembly (9) is connected to the metering roller (5) and drives the metering roller (5) to rotate so that the powder in the metering groove (6) passes through the first pressing roller (7) and is sent out.

2. The feeding device according to claim 1, characterized in that: It also comprises a first driving member (11), wherein the first driving member (11) is used to drive the first pressing roller (7) to rotate, and the rotation direction of the first pressing roller (7) is opposite to the rotation direction of the metering roller (5).

3. The feeding device according to claim 1, characterized in that: It also comprises an adjustment component, which is arranged on the frame (2), and the adjustment component is connected to the metering roller (5) to adjust the distance between the metering roller (5) and the first pressing roller (7).

4. The feeding device according to claim 3, characterized in that: The metering roller (5) is rotatably arranged on an adjustment plate (12), and a plurality of first screw holes (13) are arranged on the adjustment plate (12); The adjustment component comprises: An adjustment mounting plate (14) is arranged on the frame (2), and a plurality of second screw holes (15) are arranged on the adjustment mounting plate (14); The adjusting screw (16) passes through the second screw hole (15) and the first screw hole (13) in sequence to connect the adjusting mounting plate (14) and the adjusting plate (12).

5. The feeding device according to claim 1, characterized in that: The invention also comprises a stirring assembly (17), wherein the stirring assembly (17) comprises: A stirring shaft (18) is drivingly connected to the driving assembly (9); A stirring blade (19) is arranged on the stirring shaft (18) and is arranged in the silo (1) near the discharge port (4).

6. The feeding device according to claim 5, characterized in that: The driving assembly (9) comprises a second driving member (20) and a synchronous belt (21); the second driving member (20) is arranged on the frame (2); and the second driving member (20) is connected to the metering roller (5) and the stirring shaft (18) via the synchronous belt (21).

7. The feeding device according to claim 1, characterized in that: It also comprises a scraper assembly (22), which is arranged at a position after the material is dropped in the rotation direction of the metering roller (5), and the scraper assembly (22) has a scraper piece (23), and the scraper piece (23) is always in contact with the outer surface of the metering roller (5).

8. The feeding device according to claim 7, characterized in that: The scraper assembly (22) comprises: A scraper mounting plate (24) is arranged on the frame (2); A support shaft (25) is arranged on the scraper mounting plate (24), and the scraper member (23) is slidably arranged on the support shaft (25); An elastic member (26) is arranged on the support shaft (25), and the elastic member (26) has an elastic force that enables the scraper member (23) to always abut against the metering roller (5).

9. The feeding device according to claim 8, characterized in that: The scraper (23) and the support shaft (25) are connected via a linear bearing (27).

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