Extrusion type coating machine for battery processing

Abstract

The utility model provides an extrusion type coating machine for battery processing, which relates to the technical field of extrusion type coating machines for battery processing, and comprises a bottom plate, a conveying table is fixedly connected onto the bottom plate, a material storage tank is fixedly connected onto the bottom plate, a screw pump is fixedly connected onto the conveying table, and the material storage tank is fixedly connected onto the bottom plate. The input end of the screw pump is communicated with the material storage tank, a coating head is fixedly connected to the conveying table, the output end of the screw pump is communicated with the coating head, three drying boxes are fixedly connected to the conveying table, electric heating wires are fixedly connected to the interiors of the drying boxes, a plurality of conveying rollers are arranged on the conveying table, and the conveying rollers are arranged on the conveying table. According to the utility model, the problems that the flow of the slurry extruded from the coating head fluctuates transversely and longitudinally in the coating process due to the fact that the rheological characteristics (such as viscosity, thixotropy and the like) of the slurry can be changed due to factors such as environment temperature, storage time and the like, and the overall quality and performance of the battery are reduced are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of extrusion coating machines for battery processing, and in particular to an extrusion coating machine for battery processing. Background Technology

[0002] Extrusion coating machines for battery processing are key equipment in the production process of lithium batteries and other batteries. They are mainly used to uniformly coat battery electrode materials (such as positive and negative electrode slurries) onto current collectors (such as aluminum foil and copper foil).

[0003] In the coating process of existing extrusion coating machines, although the coating head is designed to achieve uniform slurry extrusion, the rheological properties of the slurry itself (such as viscosity, thixotropy, etc.) may change due to factors such as ambient temperature and storage time. This can cause fluctuations in the flow rate of the slurry extruded from the coating head in both the horizontal and vertical directions during the coating process, which in turn leads to a reduction in the overall quality and performance of the battery. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an extrusion coating machine for battery processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an extrusion coating machine for battery processing, comprising a base plate, a conveyor table fixedly connected to the base plate, a storage tank fixedly connected to the base plate, a screw pump fixedly connected to the conveyor table, the input end of the screw pump being connected to the storage tank, a coating head fixedly connected to the conveyor table, the output end of the screw pump being connected to the coating head, three drying chambers fixedly connected to the conveyor table, each drying chamber having an electric heating wire fixedly connected to it, several conveyor rollers provided on the conveyor table, a pressing and leveling structure provided on the conveyor table, the pressing and leveling structure mainly consisting of two fixed plates, both fixedly connected to the conveyor table, a sliding groove provided on the fixed plate, a slider slidably connected in the sliding groove, a pressure roller rotatably connected to the two sliders via bearings, a fixed frame fixedly connected to the two sliders, a cleaning plate fixedly connected to the fixed frame, and a collection box fixedly connected to the fixed frame.

[0006] The aforementioned components achieve the following effects: the conveyor roller, driven by a motor, moves the current collector, injects slurry into the storage tank, and starts the screw pump, which pumps the slurry from the storage tank to the coating head. The slurry is then coated onto the current collector and dried by electric heating wires in the drying chamber. When passing through the pressure roller, the pressure roller smooths the slurry. This physical smoothing effectively compensates for coating thickness differences caused by fluctuations in the rheological properties of the slurry and unevenness of the current collector surface, resulting in a more uniform coating distribution in both the transverse and longitudinal directions. The smoothing thickness can be adjusted by sliding a slider. The cleaning plate cleans the surface of the pressure roller to prevent excess slurry from adhering to it. The cleaned impurities flow along the cleaning plate to the collection box for collection, thus avoiding fluctuations in the flow rate of slurry squeezed from the coating head in both the transverse and longitudinal directions due to changes in the rheological properties of the slurry itself caused by factors such as ambient temperature and storage time. This prevents a reduction in the overall quality and performance of the battery.

[0007] Preferably, a threaded rod is rotatably connected to the slide groove via a bearing, and the threaded rod is threadedly connected to the slide block.

[0008] The effect achieved by the above components is that rotating the threaded rod can drive the slider to slide up and down.

[0009] Preferably, pulleys are fixedly connected to the two threaded rods respectively, and a transmission belt is provided on both pulleys. A crank handle is fixedly connected to one end of one of the threaded rods.

[0010] The above-mentioned components achieve the following effect: the operator can manually turn the handle to drive one pulley to rotate, and under the action of the transmission belt, the two pulleys rotate synchronously, thereby causing the two threaded rods to rotate synchronously, making the operation more convenient.

[0011] Preferably, a disc is fixedly connected to one of the fixed plates, the disc is rotatably connected to the threaded rod, a limiting rod is slidably inserted into the handle, and a plurality of limiting grooves are formed on the disc.

[0012] The effect achieved by the above components is that when the crank is rotated to a specified angle, the sliding limit rod is made to lock into the corresponding limit groove, which can limit the crank. There are enough limit grooves to accommodate the position of the crank under different requirements.

[0013] Preferably, a spring is sleeved on the limiting rod, one end of the spring is fixedly connected to the limiting rod, and the other end of the spring is fixedly connected to the crank handle.

[0014] The effect achieved by the above components is that the limiting rod is stuck in the limiting groove, the spring is in a stretched state, so the spring's rebound force acts on the limiting rod, making the limiting more stable.

[0015] Preferably, the storage tank is provided with a stirring structure, which mainly consists of a stirring shaft. The stirring shaft is rotatably connected to the storage tank through bearings. Several stirring blades are fixedly connected to the stirring shaft. A servo motor is fixedly connected to the base plate, and the stirring shaft is driven to rotate by the servo motor.

[0016] The effect achieved by the above components is as follows: the output end of the servo motor is connected to the stirring shaft through a reducer and a coupling. When the servo motor is started, the stirring shaft can be driven to rotate, so that several stirring blades can stir the slurry, which can prevent it from settling and clumping.

[0017] Preferably, a sleeve is fitted onto the stirring shaft, and the sleeve is rotatably connected to the storage tank via a bearing. Two L-shaped frames are fixedly connected to the sleeve, and several stirring rods are fixedly connected to the L-shaped frames. A scraper is fixedly connected to the L-shaped frames.

[0018] The effects achieved by the above components are as follows: the reverse rotation of the sleeve allows the L-shaped frame to drive the stirring rod to rotate the slurry in the opposite direction, resulting in better stirring effect, and the scraper can clean the inner wall of the storage tank to prevent it from sticking to the inner wall.

[0019] Preferably, a first bevel gear is fixedly connected to both the stirring shaft and the sleeve, and a second bevel gear is meshed with both first bevel gears. The second bevel gear is rotatably connected to the storage tank through a bearing.

[0020] The effect achieved by the above components is as follows: the rotation of the stirring shaft will drive the first bevel gear to rotate, and under the action of the second bevel gear, the two first bevel gears will rotate in opposite directions, so that the stirring shaft and the sleeve will rotate in opposite directions, making the operation more convenient.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this utility model, by setting a pressure equalization structure, the conveying roller is driven by a motor to move the current collector, injecting slurry into the storage tank, starting the screw pump, and pumping the slurry in the storage tank to the coating head, which then coats the current collector. The slurry then enters the drying chamber where it is dried by electric heating wires. When passing through the pressure roller, the pressure roller can smooth the slurry. This physical smoothing effectively compensates for coating thickness differences caused by fluctuations in the rheological properties of the slurry and unevenness of the current collector surface, making the coating more uniformly distributed in both the horizontal and vertical directions. The smoothing thickness can be adjusted by sliding a slider. The cleaning plate cleans the surface of the pressure roller to prevent excess slurry from adhering to it, and the cleaned impurities flow along the cleaning plate to the collection box for collection. This avoids the situation where the slurry flow rate squeezed from the coating head fluctuates horizontally and vertically during the coating process due to changes in the rheological properties of the slurry itself caused by factors such as ambient temperature and storage time, which could lead to a reduction in the overall quality and performance of the battery. Attached Figure Description

[0022] Figure 1 A three-dimensional structural diagram of an extrusion coating machine for battery processing is provided for this utility model;

[0023] Figure 2 This utility model provides a partial schematic diagram of the uniform pressing structure of an extrusion coating machine for battery processing;

[0024] Figure 3 This utility model provides another schematic diagram of the uniform pressing structure of an extrusion coating machine for battery processing;

[0025] Figure 4 This utility model provides a partial schematic diagram of the stirring structure of an extrusion coating machine for battery processing;

[0026] Figure 5 This utility model proposes an extrusion coating machine for battery processing. Figure 1 Enlarged view of section A.

[0027] Legend: 1. Base plate; 2. Conveyor table; 3. Storage tank; 4. Screw pump; 5. Coating head; 6. Drying oven; 7. Conveyor roller; 8. Pressing structure; 81. Slider; 82. Pressure roller; 83. Fixing plate; 84. Slide groove; 85. Threaded rod; 86. Pulley; 87. Drive belt; 88. Handle; 89. Disc; 810. Limiting rod; 811. Limiting groove; 812. Spring; 813. Fixing frame; 814. Cleaning plate; 815. Collection box; 9. Stirring structure; 91. Stirring shaft; 92. Stirring blade; 93. Servo motor; 94. Sleeve; 95. L-shaped frame; 96. Scraper; 97. Stirring rod; 98. First bevel gear; 99. Second bevel gear. Detailed Implementation

[0028] Example 1, such as Figure 1 As shown, an extrusion coating machine for battery processing includes a base plate 1, a conveyor table 2 fixedly connected to the base plate 1, a storage tank 3 fixedly connected to the base plate 1, a screw pump 4 fixedly connected to the conveyor table 2, the input end of the screw pump 4 being connected to the storage tank 3, a coating head 5 fixedly connected to the conveyor table 2, the output end of the screw pump 4 being connected to the coating head 5, three drying chambers 6 fixedly connected to the conveyor table 2, each of the drying chambers 6 being fixedly connected to an electric heating wire, and several conveying rollers 7 being provided on the conveyor table 2.

[0029] Reference Figures 2 to 5The conveyor table 2 is equipped with a pressing structure 8, which mainly consists of two fixed plates 83. Both fixed plates 83 are fixedly connected to the conveyor table 2. The fixed plates 83 have grooves 84, and sliders 81 are slidably connected in the grooves 84. The two sliders 81 are connected to pressure rollers 82 through bearings. The two sliders 81 are fixedly connected to a fixed frame 813, and a cleaning plate 814 and a collection box 815 are fixedly connected to the fixed frame 813. The conveyor roller 7 is driven by a motor to move the collector, injecting slurry into the storage tank 3. The screw pump 4 is started, and the screw pump 4 pumps the slurry in the storage tank 3 to the coating head 5, and then coats it onto the collector through the coating head 5, and then enters the dry... The slurry is dried by an electric heating wire in the drying chamber 6. When passing through the pressure roller 82, the pressure roller 82 can smooth the slurry. This physical smoothing can effectively compensate for the coating thickness difference caused by factors such as fluctuations in the rheological properties of the slurry and unevenness of the current collector surface, making the coating more uniformly distributed in the horizontal and vertical directions. The smoothing thickness can be adjusted by sliding the slider 81. The cleaning plate 814 can clean the surface of the pressure roller 82 to prevent excess slurry from sticking to the pressure roller 82. The impurities after cleaning flow along the cleaning plate 814 to the collection box 815 for collection, thereby avoiding the slurry flow rate squeezed out from the coating head 5 during the coating process due to changes in the rheological properties of the slurry itself due to factors such as ambient temperature and storage time. There are certain fluctuations in the horizontal and vertical directions, which can lead to a reduction in the overall quality and performance of the battery. A threaded rod 85 is rotatably connected to the slide 84 via a bearing. The threaded rod 85 is threadedly connected to the slider 81. Rotating the threaded rod 85 causes the slider 81 to slide up and down. Two pulleys 86 are fixedly connected to the two threaded rods 85 respectively, and a drive belt 87 is provided on both pulleys 86. A crank 88 is fixedly connected to one end of one threaded rod 85. The operator can manually turn the crank 88 to drive one of the pulleys 86 to rotate. Under the action of the drive belt 87, the two pulleys 86 rotate synchronously, thus causing the two threaded rods 85 to rotate synchronously, making operation more convenient. A disc 89 is fixedly connected to a fixed plate 83. The disc 89 is rotatably connected to the threaded rod 85. A limiting rod 810 is slidably inserted on the handle 88. The disc 89 has several limiting grooves 811. When the handle 88 rotates to a specified angle, the sliding limiting rod 810 is engaged in the corresponding limiting groove 811, which can limit the position of the handle 88. The number of limiting grooves 811 is sufficient to accommodate the position of the handle 88 under different requirements. A spring 812 is sleeved on the limiting rod 810. One end of the spring 812 is fixedly connected to the limiting rod 810, and the other end of the spring 812 is fixedly connected to the handle 88. When the limiting rod 810 is engaged in the limiting groove 811, the spring 812 is in a stretched state. Therefore, the rebound force of the spring 812 acts on the limiting rod 810, making the limiting more stable.

[0030] Reference Figure 4The storage tank 3 is equipped with a stirring structure 9, which mainly consists of a stirring shaft 91. The stirring shaft 91 is rotatably connected to the storage tank 3 via bearings. Several stirring blades 92 are fixedly connected to the stirring shaft 91. A servo motor 93 is fixedly connected to the bottom plate 1. The stirring shaft 91 is driven to rotate by the servo motor 93. The output end of the servo motor 93 is connected to the stirring shaft 91 via a reducer and a coupling. Starting the servo motor 93 can drive the stirring shaft 91 to rotate, so that the stirring blades 92 can stir the slurry, which can prevent it from settling and agglomerating. A sleeve 94 is fitted on the stirring shaft 91. The sleeve 94 is rotatably connected to the storage tank 3 via bearings. Two L-shaped frames 95 are fixedly connected to the sleeve 94. The container is equipped with several stirring rods 97. A scraper 96 is fixedly connected to the L-shaped frame 95. Reverse rotation of the sleeve 94 can cause the L-shaped frame 95 to drive the stirring rods 97 to rotate the slurry in the opposite direction, resulting in better stirring effect. The scraper 96 can also clean the inner wall of the storage tank 3 to prevent it from sticking to the inner wall. A first bevel gear 98 is fixedly connected to both the stirring shaft 91 and the sleeve 94. A second bevel gear 99 is meshed with both first bevel gears 98. The second bevel gear 99 is rotatably connected to the storage tank 3 through a bearing. The rotation of the stirring shaft 91 will drive one of the first bevel gears 98 to rotate. Under the action of the second bevel gear 99, the two first bevel gears 98 rotate in opposite directions, causing the stirring shaft 91 and the sleeve 94 to rotate in opposite directions, making the operation more convenient.

[0031] Working principle: The conveyor roller 7, driven by a motor, moves the current collector, injecting slurry into the storage tank 3. The screw pump 4 is then activated, pumping the slurry from the storage tank 3 to the coating head 5, where it is applied to the current collector. The slurry then enters the drying chamber 6 where it is dried by electric heating wires. As it passes through the pressure roller 82, the pressure roller 82 smooths the slurry. This physical smoothing effectively compensates for coating thickness differences caused by fluctuations in the slurry's rheological properties and surface unevenness of the current collector, resulting in a more uniform coating distribution in both the transverse and longitudinal directions. The smoothing thickness can be adjusted by sliding the slider 81. The cleaning plate 814 cleans the surface of the pressure roller 82 to prevent excess slurry from adhering to it. The cleaned impurities flow along the cleaning plate 814 to the collection box 815 for collection. This avoids fluctuations in the flow rate of the slurry extruded from the coating head 5 during coating due to changes in the rheological properties of the slurry caused by factors such as ambient temperature and storage time, which could lead to a reduction in the overall quality and performance of the battery. Rotating the threaded rod 85 causes the slider 81 to slide up and down. The operator can manually turn the crank handle 88 to rotate a pulley 86. Under the action of the transmission belt 87, the two pulleys 86 rotate synchronously, which in turn causes the two threaded rods 85 to rotate synchronously, making operation more convenient. When the crank handle 88 rotates to a specified angle, the sliding limit rod 810 is engaged in the corresponding limit groove 811, which can limit the crank handle 88. There are enough limit grooves 811 to accommodate the position of the crank handle 88 under different requirements. When the limit rod 810 is engaged in the limit groove 811, the spring 812 is in a stretched state. Therefore, the rebound force of the spring 812 acts on the limit rod 810, making the limit more stable. The output end of the servo motor 93 is connected to the reducer and the coupling. The stirring shaft 91 is connected, and the servo motor 93 is started, which drives the stirring shaft 91 to rotate, so that several stirring blades 92 can stir the slurry, which can prevent it from settling and clumping. The reverse rotation of the sleeve 94 can cause the L-shaped frame 95 to drive the stirring rod 97 to rotate the slurry in the opposite direction, which makes the stirring effect better. The scraper 96 can clean the inner wall of the storage tank 3 to prevent it from sticking to the inner wall. The rotation of the stirring shaft 91 will drive a first bevel gear 98 to rotate. Under the action of the second bevel gear 99, the two first bevel gears 98 rotate in opposite directions, so that the stirring shaft 91 and the sleeve 94 rotate in opposite directions, making the operation more convenient.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A battery processing extrusion coating machine, comprising a base plate (1), characterized in that: A conveyor platform (2) is fixedly connected to the base plate (1), a storage tank (3) is fixedly connected to the base plate (1), a screw pump (4) is fixedly connected to the conveyor platform (2), the input end of the screw pump (4) is connected to the storage tank (3), a coating head (5) is fixedly connected to the conveyor platform (2), the output end of the screw pump (4) is connected to the coating head (5), three drying boxes (6) are fixedly connected to the conveyor platform (2), each of the drying boxes (6) is fixedly connected to an electric heating wire, several conveyor rollers (7) are provided on the conveyor platform (2), and the conveyor platform (2) is provided with... The pressure equalization structure (8) is mainly composed of two fixed plates (83). The two fixed plates (83) are fixedly connected to the conveyor table (2). The fixed plates (83) are provided with a sliding groove (84). A slider (81) is slidably connected in the sliding groove (84). The two sliders (81) are connected to a pressure roller (82) through a bearing. The two sliders (81) are fixedly connected to a fixed frame (813). A cleaning plate (814) is fixedly connected to the fixed frame (813). A collection box (815) is fixedly connected to the fixed frame (813).

2. The extrusion coating machine for battery processing according to claim 1, characterized in that: A threaded rod (85) is rotatably connected to the slide (84) via a bearing, and the threaded rod (85) is threadedly connected to the slider (81).

3. The extrusion coating machine for battery processing according to claim 2, characterized in that: Two threaded rods (85) are respectively fixedly connected to pulleys (86), and a transmission belt (87) is provided on both pulleys (86). A crank (88) is fixedly connected to one end of one threaded rod (85).

4. The extrusion coating machine for battery processing according to claim 3, characterized in that: A disc (89) is fixedly connected to a fixed plate (83), the disc (89) is rotatably connected to a threaded rod (85), a limiting rod (810) is slidably inserted on the handle (88), and a plurality of limiting grooves (811) are opened on the disc (89).

5. The extrusion coating machine for battery processing according to claim 4, characterized in that: A spring (812) is fitted on the limiting rod (810). One end of the spring (812) is fixedly connected to the limiting rod (810), and the other end of the spring (812) is fixedly connected to the crank handle (88).

6. The extrusion coating machine for battery processing according to claim 5, characterized in that: The storage tank (3) is provided with a stirring structure (9), which is mainly composed of a stirring shaft (91). The stirring shaft (91) is rotatably connected to the storage tank (3) through a bearing. Several stirring blades (92) are fixedly connected to the stirring shaft (91). A servo motor (93) is fixedly connected to the bottom plate (1). The stirring shaft (91) is driven to rotate by the servo motor (93).

7. The extrusion coating machine for battery processing according to claim 6, characterized in that: A sleeve (94) is fitted on the stirring shaft (91). The sleeve (94) is rotatably connected to the storage tank (3) via a bearing. Two L-shaped frames (95) are fixedly connected to the sleeve (94). Several stirring rods (97) are fixedly connected to the L-shaped frames (95). A scraper (96) is fixedly connected to the L-shaped frames (95).

8. The extrusion coating machine for battery processing according to claim 7, characterized in that: The stirring shaft (91) and the sleeve (94) are both fixedly connected with a first bevel gear (98), and the two first bevel gears (98) are meshed with a second bevel gear (99). The second bevel gear (99) is rotatably connected to the storage tank (3) through a bearing.

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