High-solid-content and high-viscosity feeding system and high-solid-content and high-viscosity coating system

Abstract

The invention relates to the technical field of lithium battery coating systems, in particular to a high-solid-content and high-viscosity feeding system and a high-solid-content and high-viscosity coating system. The high-solid-content and high-viscosity feeding system comprises a control module, a material pressing mechanism, a buffer tank, a conveying mechanism and a rack, the control module, the material pressing mechanism, the buffer tank and the conveying mechanism are all arranged on the rack, and the material pressing mechanism and the conveying mechanism are both electrically connected with the control module; a tank opening is formed in the top of the buffer tank, and a discharging opening is formed in the bottom of the buffer tank; the feeding end of the conveying mechanism is communicated with the discharging opening, and the discharging end of the conveying mechanism is communicated with a coating die head of the coating machine; the control module is used for controlling the material pressing mechanism to stretch into the buffer tank from the tank opening, the slurry in the buffer tank is extruded to the discharging opening, the high-solid-content slurry in the buffer tank is extruded and discharged out of the buffer tank through the material pressing mechanism, the uniformity of the flow of the slurry is guaranteed, meanwhile, the high-solid-content slurry can be continuously supplied and conveyed, and the production efficiency is improved. And the coating effect and stability are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery coating systems, and in particular to a high-solid-content high-viscosity feeding system and a high-solid-content high-viscosity coating system. Background Art

[0002] Coating is one of the key processes in the production of lithium battery pole pieces. The main purpose of this process is to evenly coat the slurry with high solid content, good viscosity and good fluidity on the positive and negative pole pieces through the die head. For the same process formula, the higher the solid content of the slurry, the greater the viscosity. Within a certain range, the higher the solid content of the slurry, the thicker the coating on the pole piece, and the higher the battery capacity. When the coating thickness is constant, increasing the solid content of the slurry can shorten the drying time entering the oven, reduce the number of ovens, and save energy.

[0003] The solid content of the existing electrode slurry is about 50%. When the solid content of the electrode slurry is increased to more than 60%, the slurry is in a state similar to a semi-solid mud, and the fluidity of the slurry is significantly reduced.

[0004] For high-solid slurry, increasing the solid content reduces the fluidity of the slurry, which increases the difficulty of slurry transportation to a certain extent. Due to the poor fluidity of high-solid slurry, it is difficult to achieve continuous slurry supply if the slurry is fed only by the flow of the slurry in the cavity. Summary of the invention

[0005] The purpose of the present invention is to provide a high-solid content and high-viscosity feeding system and a high-solid content and high-viscosity coating system to solve the technical problem that the high-solid content slurry has poor fluidity and it is difficult to achieve continuous supply of the slurry by simply relying on the flow of the slurry in the cavity to feed the slurry.

[0006] In a first aspect, the present invention provides a high-solid content and high-viscosity feeding system, comprising: a control module, a material pressing mechanism, a buffer tank, a conveying mechanism and a frame, wherein the control module, the material pressing mechanism, the buffer tank and the conveying mechanism are all arranged on the frame, and the material pressing mechanism and the conveying mechanism are both electrically connected to the control module;

[0007] The top of the cache tank is provided with a tank opening, and the bottom of the cache tank is provided with a discharge port;

[0008] The feeding end of the conveying mechanism is communicated with the discharging port, and the discharging end of the conveying mechanism is communicated with the coating die head of the coating machine;

[0009] The control module is used to control the pressing mechanism to extend from the tank opening into the buffer tank, squeeze the slurry in the buffer tank toward the discharge opening, and discharge the slurry from the discharge opening into the conveying mechanism;

[0010] The control module is also used to control the conveying mechanism to convey the slurry to the coating die head of the coating machine.

[0011] In an optional embodiment, the material pressing mechanism includes an electric cylinder and a piston, and the output end of the electric cylinder is connected to the piston;

[0012] The control module is electrically connected to the electric cylinder and is used to control the thrust of the electric cylinder.

[0013] In an optional embodiment, the conveying mechanism includes a twin-screw extruder mechanism and a first pipeline;

[0014] The feeding end of the twin-screw extruder mechanism is connected to the discharge port through the first pipeline, and the discharging end of the twin-screw extruder mechanism is connected to the coating die head of the coating machine;

[0015] The control module is electrically connected to the twin-screw extruder mechanism and is used to control the motor current of the twin-screw extruder mechanism.

[0016] In an optional embodiment, the conveying mechanism further includes a screw pump and a second pipeline;

[0017] The feed end of the screw pump is connected to the discharge end of the twin-screw extruder through the second pipeline, and the discharge end of the screw pump is connected to the coating die head of the coating machine;

[0018] The control module is electrically connected to the screw pump and is used to control the screw pump to transport slurry.

[0019] In an optional embodiment, a degassing mechanism is also included;

[0020] The twin-screw extruder mechanism is provided with an exhaust channel, and the degassing mechanism is connected to the exhaust channel;

[0021] The control module is electrically connected to the degassing mechanism and is used to control the degassing mechanism to discharge air in the slurry in the twin-screw extruder mechanism.

[0022] In an optional embodiment, a first pressure sensor and a first pressure relief mechanism are provided on the first pipeline, and the first pressure sensor and the first pressure relief mechanism are both electrically connected to the control module, the first pressure sensor is used to monitor the pressure in the first pipeline and feed back to the control module, and the control module is used to control the first pressure relief mechanism to relieve pressure on the first pipeline;

[0023] and / or;

[0024] A second pressure sensor and a second pressure relief mechanism are provided on the second pipeline, and the second pressure sensor and the second pressure relief mechanism are both electrically connected to the control module. The second pressure sensor is used to monitor the pressure in the second pipeline and feed back to the control module, and the control module is used to control the second pressure relief mechanism to relieve pressure on the second pipeline.

[0025] In an optional embodiment, a mold temperature controller is further included, the mold temperature controller is electrically connected to the temperature controller of the control module, and the temperature controller of the control module is used to control the power regulator of the mold temperature controller to adjust the power;

[0026] The tank wall of the buffer tank is hollowed out to form a partition, a first water outlet is arranged on the top of the partition, and a first water inlet is arranged on the bottom, the first water inlet and the first water outlet are both connected to the mold temperature controller, a plurality of partitions are arranged in the partition along the direction from the first water inlet to the first water outlet, and the partitions divide the partition into a plurality of flow channels, and any two adjacent flow channels are connected to each other, a first temperature sensor electrically connected to the temperature controller of the control module is arranged on the first pipeline, and the first temperature sensor is used to monitor the temperature of the slurry in the first pipeline and feed back to the temperature controller of the control module;

[0027] and / or;

[0028] A water inlet is provided at one end of the barrel assembly of the twin-screw extruder mechanism, and a water outlet is provided at the other end, and a plurality of flow channels connected in sequence are provided between the water inlet and the water outlet, the water inlet is connected to the mold temperature controller, and a second temperature sensor electrically connected to the temperature controller of the control module is provided on the second pipeline, and the second temperature sensor is used to monitor the temperature of the slurry in the second pipeline and feed back to the temperature controller of the control module.

[0029] In an optional embodiment, it further includes a third pipeline, an electric heating pipe temperature control mechanism and a third temperature sensor;

[0030] The discharge end of the screw pump is connected to the coating die head of the coating machine through the third pipeline, the electric heating tube temperature control mechanism and the third temperature sensor are both arranged on the third pipeline, and the third temperature sensor is located downstream of the electric heating tube temperature control mechanism;

[0031] The electric heating tube temperature control mechanism and the third temperature sensor are both electrically connected to the temperature controller of the control module. The third temperature sensor is used to monitor the temperature of the slurry in the third pipeline and feed back to the temperature controller of the control module. The temperature controller of the control module is used to control the heating power of the electric heating tube temperature control mechanism to the slurry in the third pipeline.

[0032] In an optional embodiment, a third pressure sensor and a third pressure relief mechanism are also provided on the third pipeline, and the third pressure sensor and the third pressure relief mechanism are both located downstream of the electric heating tube temperature control mechanism, and the third pressure sensor and the third pressure relief mechanism are both electrically connected to the control module, and the third pressure sensor is used to monitor the pressure in the third pipeline and feed back to the control module, and the control module is used to control the third pressure relief mechanism to relieve the pressure on the third pipeline.

[0033] In a second aspect, the present invention provides a high-solid content and high-viscosity coating system, comprising a coating machine and the high-solid content and high-viscosity feeding system described in any one of the aforementioned embodiments.

[0034] Compared with the prior art, the high solid content and high viscosity feeding system and the high solid content and high viscosity coating system provided by the present invention have the following technical advantages:

[0035] The high-solid content and high-viscosity feeding system provided by the present invention comprises: a control module, a pressing mechanism, a buffer tank, a conveying mechanism and a frame, wherein the control module, the pressing mechanism, the buffer tank and the conveying mechanism are all arranged on the frame, and the pressing mechanism and the conveying mechanism are both electrically connected to the control module; a tank port is arranged on the top of the buffer tank, and a discharge port is arranged on the bottom of the buffer tank; the feed end of the conveying mechanism is connected with the discharge port, and the discharge end of the conveying mechanism is connected with the coating die of the coating machine; the control module is used to control the pressing mechanism to extend into the buffer tank from the tank port, squeeze the slurry in the buffer tank toward the discharge port, and discharge it into the conveying mechanism from the discharge port; the control module is also used to control the conveying mechanism to convey the slurry to the coating die of the coating machine.

[0036] The control module controls the pressing mechanism to extend into the buffer tank from the tank mouth, and squeezes the slurry in the buffer tank into the conveying mechanism through the discharge port. The control module controls the conveying mechanism to convey the slurry to the coating die head of the coater, and squeezes the high-solid content slurry in the buffer tank out of the buffer tank through the pressing mechanism, thereby ensuring the uniformity of the slurry flow rate. At the same time, it can also enable the continuous supply of high-solid content slurry to ensure the effect and stability during coating.

[0037] The high-solid-content and high-viscosity coating system provided by the present invention includes the above-mentioned high-solid-content and high-viscosity feeding system. Therefore, the technical advantages and effects achieved by it include the technical advantages and effects achieved by the above-mentioned high-solid-content and high-viscosity feeding system, which will not be elaborated in detail here.

[0038] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 A schematic diagram of the structure of a high-solid-content and high-viscosity feeding system provided in an embodiment of the present invention;

[0041] Figure 2 A schematic diagram of the structure of one side of a material pressing mechanism provided in an embodiment of the present invention;

[0042] Figure 3 A schematic diagram of the structure of the other side of the material pressing mechanism provided in an embodiment of the present invention;

[0043] Figure 4 A schematic diagram of the structure of a transfer vehicle provided in an embodiment of the present invention;

[0044] Figure 5 A schematic diagram of a piston structure provided by an embodiment of the present invention;

[0045] Figure 6 A cross-sectional view of a cylinder and a support seat provided in an embodiment of the present invention;

[0046] Figure 7 A cross-sectional view of a cache tank provided in an embodiment of the present invention.

[0047] Icons: 1- cache tank; 2- frame; 3- electric cylinder; 4- piston; 5- sealing ring; 6- upper plug body; 7- middle plug body; 8- lower plug body; 9- upper convex part; 10- clamping ring; 11- cache tank positioning plate; 12- positioning pin; 13- pin hole; 14- exhaust pipe; 15- exhaust port; 16- guide column; 17- transfer vehicle; 18- positioning piece; 19- support seat; 20- positioning hole; 21- cylinder; 22- fixing plate; 23- control module; 24- twin-screw extruder mechanism; 25- screw pump; 26- partition; 27- partition; 28- electric heating tube temperature control mechanism. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] 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.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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.

[0051] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] The present invention is further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0053] Specific structure such as Figures 1 to 7 shown.

[0054] The present embodiment provides a high-solid content and high-viscosity feeding system, including: a control module 23, a pressing mechanism, a buffer tank 1, a conveying mechanism and a frame 2, the control module 23, the pressing mechanism, the buffer tank 1 and the conveying mechanism are all arranged on the frame 2, and the pressing mechanism and the conveying mechanism are both electrically connected to the control module 23; a tank mouth is arranged on the top of the buffer tank 1, and a discharge port is arranged on the bottom of the buffer tank 1; the feed end of the conveying mechanism is connected with the discharge port, and the discharge end of the conveying mechanism is connected with the coating die of the coater; the control module 23 is used to control the pressing mechanism to extend into the buffer tank 1 from the tank mouth, squeeze the slurry in the buffer tank 1 toward the discharge port, and discharge it into the conveying mechanism from the discharge port; the control module 23 is also used to control the conveying mechanism to convey the slurry to the coating die of the coater.

[0055] In this embodiment, the control module 23 controls the pressing mechanism to extend into the buffer tank 1 from the tank mouth, and squeezes the slurry in the buffer tank 1 into the conveying mechanism through the discharge port. The control module 23 controls the conveying mechanism to convey the slurry to the coating die head of the coater. The slurry with high solid content in the buffer tank 1 is squeezed out of the buffer tank 1 through the pressing mechanism, thereby ensuring the uniformity of the slurry flow rate. At the same time, it can also enable the continuous supply of high solid content slurry to ensure the effect and stability during coating.

[0056] In this embodiment, the pressing mechanism includes a driver and a pressing piece. The driver is arranged on the frame 2, and the pressing piece is connected to the driver. The pressing piece can extend into the buffer tank 1 through the tank mouth. The driver is used to drive the pressing piece to move so as to squeeze the slurry in the buffer tank 1 toward the discharge port and discharge it from the discharge port.

[0057] In the optional technical solution of this embodiment, the driver includes a rotary motor, and the pressing member includes a screw, which is connected to the rotary motor. The screw extends into the buffer tank 1 through the tank mouth, and the rotary motor drives the screw to rotate downward to extrude the slurry so that the slurry is discharged from the discharge port. The structure is simple and the slurry extrusion effect is good. In order to facilitate the screw to enter and exit the tank mouth, the driver can also include a telescopic motor, the output end of the telescopic motor is connected to the rotary motor, and the telescopic motor drives the rotary motor to rise and fall through telescoping, thereby driving the screw to enter and exit the tank mouth. It should be noted that when the screw is extruding the slurry, the telescopic motor can be non-operating, that is, it does not drive the screw to do the lifting action.

[0058] In the optional technical solution of this embodiment, the driver includes an electric cylinder 3, and the material pressing member includes a piston 4; the output end of the electric cylinder 3 is connected to the piston 4, and the control module 23 is electrically connected to the electric cylinder 3 to control the thrust of the electric cylinder 3. By driving the piston 4 to move and extrude the slurry through the electric cylinder 3, the flow rate of the extruded slurry can be better controlled, and the uniformity of the slurry flow rate can be better ensured, thereby achieving better effect and stability during coating. The electric cylinder 3 can ensure the pressure inside the buffer tank 1 by controlling the speed at which the piston 4 is pressed down.

[0059] Specifically, a fixing plate 22 is provided on the frame 2 , the electric cylinder 3 is fixed on the fixing plate 22 , and the output end of the electric cylinder 3 passes through the fixing plate 22 and is connected to the piston 4 .

[0060] The optional technical solution of this embodiment further includes a sealing ring 5; the outer edge of the piston 4 is provided with a mounting groove, and the sealing ring 5 is sleeved in the mounting groove. When the piston 4 squeezes the slurry downward, the sealing ring 5 can play a sealing role to prevent the slurry from overflowing from the outer edge of the piston 4.

[0061] In the optional technical solution of this embodiment, the piston 4 can be formed in one piece, which is convenient to manufacture and has a stable structure.

[0062] In this embodiment, preferably, along the axial direction of the piston 4, the piston 4 includes an upper plug body 6, a middle plug body 7 and a lower plug body 8; an upper convex portion 9 is provided in the middle of the middle plug body 7, the upper plug body 6 is sleeved on the upper convex portion 9 and connected to the upper side of the middle plug body 7, and the lower plug body 8 is connected to the lower side of the middle plug body 7; along the radial direction of the piston 4, the outer edge of the middle plug body 7 is lower than the outer edge of the upper plug body 6 and the outer edge of the lower plug body 8, so that an installation groove is formed between the upper plug body 6, the middle plug body 7 and the lower plug body 8. The structure is simple and the sealing ring 5 can be easily installed.

[0063] In the optional technical solution of this embodiment, the piston 4 also includes a clamping ring 10; the clamping ring 10 is arranged in the installation groove, and the clamping ring 10 is connected to the sealing ring 5 and the lower plug body 8 through a connecting piece, and the clamping ring 10 is used to clamp the sealing ring 5 so that the sealing ring 5 bulges radially outwardly along the piston 4.

[0064] In this embodiment, the piston 4 is provided with an upper plug body 6, a middle plug body 7 and a lower plug body 8 in order to facilitate the installation of the sealing ring 5 and the clamping ring 10. The function of the clamping ring 10 is to increase the compression amount of the sealing ring 5. When the compression amount of the sealing ring 5 is insufficient, the gap between the piston 4 and the buffer tank 1 is large, and the extrusion feeding effect is not good. At this time, the clamping ring 10 is added to increase the compression amount and reduce the gap between the sealing ring 5 and the buffer tank 1. The lower plug body 8 is in contact with the slurry. The material of the lower plug body 8 can be stainless steel or non-metallic material, such as rubber. Rubber is elastic. When squeezed downward, it is elastically deformed and can produce a sealing effect. The sealing ring 5 may not be provided. At the same time, the lower plug body 8 is provided in a split body for easy replacement.

[0065] In this embodiment, the upper plug body 6, the middle plug body 7, the lower plug body 8 and the clamping ring 10 are connected by screws, which is stable and convenient.

[0066] The optional technical solution of this embodiment also includes a cache tank positioning plate 11, the output end of the electric cylinder 3 is passed through the cache tank positioning plate 11, and the piston 4 is located on the side of the cache tank positioning plate 11 away from the electric cylinder 3; a positioning pin 12 is provided on the side of the cache tank positioning plate 11 away from the electric cylinder 3, and a pin hole 13 corresponding to the positioning pin 12 is provided at the tank mouth, and the positioning pin 12 is used to be inserted into the pin hole 13.

[0067] Specifically, the buffer tank positioning plate 11 is located between the fixed plate 22 and the piston 4. The buffer tank positioning plate 11 is used to correct the coaxiality between the piston 4 and the buffer tank 1. A groove is provided on the side of the buffer tank positioning plate 11 facing the piston 4. The size of the groove matches the top of the piston 4. When the electric cylinder 3 is in the initial position, the top of the piston 4 is embedded in the groove. At the same time, the piston 4 provides a supporting force for the buffer tank positioning plate 11, so that the buffer tank positioning plate 11 is suspended. When the piston 4 is needed to squeeze the slurry, the electric cylinder 3 drives the piston 4 to move downward. At this time, the buffer tank positioning plate 11 will also move downward due to gravity until the fixed position on the buffer tank positioning plate 11 is reached. The positioning pin 12 is inserted into the pin hole 13. At this time, the buffer tank positioning plate 11 covers the tank mouth. When the electric cylinder 3 drives the piston 4 to continue to move downward, the piston 4 extends into the buffer tank 1 to extrude the slurry. The positioning pin 12 and the pin hole 13 cooperate to position the buffer tank 1, ensuring the coaxiality between the piston 4 and the buffer tank 1 during the downward movement process. Since there is an error of several millimeters in the coaxiality of the piston 4 and the buffer tank 1 during installation, the bottom of the positioning pin 12 is conical, and even if there is an error, it can correct itself and be fixed to the pin hole 13. At this time, the piston 4 avoids errors under the action of the buffer tank positioning plate 11, ensuring the coaxiality with the buffer tank 1 and improving the extrusion feeding quality.

[0068] The optional technical solution of this embodiment further includes an exhaust pipe 14 , and an exhaust port 15 is provided on the piston 4 along the axial direction of the piston 4 ; the exhaust pipe 14 is connected to the exhaust port 15 , and an exhaust valve is provided on the exhaust pipe 14 .

[0069] Specifically, one end of the exhaust pipe 14 is connected to the exhaust port 15, and the other end passes through the buffer tank positioning plate 11 and the fixing plate 22 and is provided with an exhaust valve. The exhaust valve is opened, and the electric cylinder 3 is pressed down. When slurry appears in the exhaust valve, it proves that the excess air has been discharged, and the exhaust valve is closed. Then, according to the coating speed, the downward thrust of the electric cylinder 3 is controlled to ensure the uniformity of the extruded slurry flow. The exhaust valve is a ball valve, but it is not limited to this, and other valve bodies that meet the needs can also be used.

[0070] The optional technical solution of this embodiment further includes a guide column 16. A guide hole is provided on the frame 2. One end of the guide column 16 is connected to the side of the piston 4 facing the electric cylinder 3, and the other end of the guide column 16 is passed through the guide hole.

[0071] In this embodiment, at least one guide column 16 is provided, and preferably multiple guide columns 16 are provided. Specifically, two pairs of guide columns 16 are fixed to the top of the piston 4, and the guide columns 16 pass through the buffer tank positioning plate 11 and the fixing plate 22 to be fixed to the piston 4. The guide columns 16 provide a guiding function when the piston 4 is raised or lowered, thereby ensuring the stability of the movement of the piston 4.

[0072] The optional technical solution of this embodiment also includes a lifting piece, and the cache tank 1 is transported by a transfer vehicle 17, and the transfer vehicle 17 can enter and exit the rack 2; the lifting piece is arranged on the rack 2, and is used to lift and lower the cache tank 1, so as to remove the cache tank 1 from the transfer vehicle 17 and place it on the rack 2, or remove the cache tank 1 on the rack 2 and place it on the transfer vehicle 17.

[0073] In this embodiment, the buffer tank 1 is in the form of a double-layer tank body, that is, the tank wall is hollow, and the transfer vehicle 17 is used to transport the buffer tank 1 filled with high-solid slurry, mainly to transport the buffer tank 1 to the pressing mechanism. After the transfer vehicle 17 arrives at the specified position of the rack 2, the jacking piece lifts up the buffer tank 1 with the slurry, the transfer vehicle 17 is pulled out, and the jacking piece returns to its original position, so that the buffer tank 1 is removed from the transfer vehicle 17 and placed on the rack 2. The process of removing the buffer tank 1 on the rack 2 and placing it on the transfer vehicle 17 is the opposite of the above process, and will not be repeated here. The jacking piece is arranged on the rack 2 to facilitate the removal and placement of the buffer tank 1.

[0074] The optional technical solution of this embodiment also includes a positioning member 18, which is arranged at the output end of the lifting member; a support seat 19 is arranged on the cache tank 1, and a positioning hole 20 is arranged on the support seat 19, and the positioning member 18 corresponds to the positioning hole 20 and is used to be inserted into the positioning hole 20.

[0075] In this embodiment, a positioning member 18 is provided at the output end of the lifting member, and a positioning hole 20 is provided on the support seat 19 of the cache tank 1. When the lifting member is lifted, the positioning member 18 can be inserted into the positioning hole 20 to ensure the accuracy of the position of the cache tank 1.

[0076] Preferably, the positioning member 18 is in the form of a cone head, and the positioning hole 20 is a countersunk hole, which cooperate with each other to have a deviation-correcting effect.

[0077] In this embodiment, the lifting member may be a cylinder 21, an electric cylinder or a hydraulic cylinder, but is not limited thereto and may also be other structures that meet the requirements.

[0078] In the optional technical solution of this embodiment, the conveying mechanism includes a twin-screw extruder mechanism 24 and a first pipeline; the feed end of the twin-screw extruder mechanism 24 is connected to the discharge port through the first pipeline, and the discharge end of the twin-screw extruder mechanism 24 is connected to the coating die of the coating machine; the control module 23 is electrically connected to the twin-screw extruder mechanism 24, and is used to control the motor current of the twin-screw extruder mechanism 24. The twin-screw extruder mechanism 24 is controlled by a motor, and the control module 23 controls the input current to control the flow rate of the slurry extruded by the twin-screw extruder mechanism 24. Ensure the uniformity and stability of the slurry flow rate.

[0079] In the optional technical solution of this embodiment, the conveying mechanism also includes a screw pump 25 and a second pipeline; the feed end of the screw pump 25 is connected to the discharge end of the twin-screw extruder mechanism 24 through the second pipeline, and the discharge end of the screw pump 25 is connected to the coating die of the coating machine; the control module 23 is electrically connected to the screw pump 25, and is used to control the screw pump 25 to convey the slurry. The setting of the screw pump 25 can effectively ensure the uniformity of the final coating flow rate and perform the final quantitative control.

[0080] The optional technical solution of this embodiment also includes a degassing mechanism; an exhaust channel is provided on the twin-screw extruder mechanism 24, and the degassing mechanism is connected to the exhaust channel; the control module 23 is electrically connected to the degassing mechanism, and is used to control the degassing mechanism to discharge the air in the slurry in the twin-screw extruder mechanism 24.

[0081] In this embodiment, the twin-screw extruder mechanism 24 is provided with an exhaust channel at the upper part near the discharge end, and the degassing mechanism includes a vacuum pumping device and a regulating valve. The vacuum pumping device is connected to the exhaust channel. An observation window is provided at the upper end of the exhaust channel, and a regulating valve is provided at the lower end. The observation window is used to observe whether the slurry is extracted, so as to judge the vacuum degree and remove the air in the slurry.

[0082] In the optional technical solution of this embodiment, a first pressure sensor and a first pressure relief mechanism are provided on the first pipeline, and the first pressure sensor and the first pressure relief mechanism are both electrically connected to the control module 23, the first pressure sensor is used to monitor the pressure in the first pipeline and feed back to the control module 23, the control module 23 is used to control the first pressure relief mechanism to relieve pressure on the first pipeline to prevent the first pipeline from being over-pressured and causing a pipe burst; and / or; a second pressure sensor and a second pressure relief mechanism are provided on the second pipeline, and the second pressure sensor and the second pressure relief mechanism are both electrically connected to the control module 23, the second pressure sensor is used to monitor the pressure in the second pipeline and feed back to the control module 23, the control module 23 is used to control the second pressure relief mechanism to relieve pressure on the second pipeline to prevent the second pipeline from being over-pressured and causing a pipe burst.

[0083] The optional technical solution of this embodiment further includes a mold temperature controller, which is electrically connected to the temperature controller of the control module 23. The temperature controller of the control module 23 is used to control the power regulator of the mold temperature controller to adjust the power. The mold temperature controller is used to heat the circulating water.

[0084] Specifically, the tank wall of the buffer tank 1 is hollow to form a partition 26, a first water outlet is set on the top of the partition 26, and a first water inlet is set on the bottom. The first water inlet and the first water outlet are both connected to the mold temperature controller to pass circulating hot water. Along the direction from the first water inlet to the first water outlet, a plurality of partitions 27 are arranged in the partition 26, and the partitions 27 divide the partition 26 into a plurality of flow channels. Any two adjacent flow channels are interconnected to prevent the hot water flow from short-circuiting, and the heating and heat preservation effect is better. A first temperature sensor electrically connected to the temperature controller of the control module 23 is arranged on the first pipeline. The first temperature sensor is used to monitor the temperature of the slurry in the first pipeline and feed it back to The temperature controller of the control module 23 adjusts the heating power of the mold temperature controller to the buffer tank 1 in real time according to the preset temperature of the slurry; and / or; a water inlet is provided at one end of the barrel assembly of the twin-screw extruder mechanism 24, and a water outlet is provided at the other end, and a plurality of flow channels connected in sequence are provided between the water inlet and the water outlet, the water inlet is connected to the mold temperature controller, and a second temperature sensor electrically connected to the temperature controller of the control module 23 is provided on the second pipeline, the second temperature sensor is used to monitor the temperature of the slurry in the second pipeline and feed back to the temperature controller of the control module 23, and adjust the heating power of the mold temperature controller to the twin-screw extruder mechanism 24 in real time according to the preset temperature of the slurry.

[0085] The optional technical solution of this embodiment also includes a third pipeline, an electric heating tube temperature control mechanism 28 and a third temperature sensor; the discharge end of the screw pump 25 is connected to the coating die head of the coating machine through the third pipeline, the electric heating tube temperature control mechanism 28 and the third temperature sensor are both arranged on the third pipeline, and the third temperature sensor is located downstream of the electric heating tube temperature control mechanism 28; the electric heating tube temperature control mechanism 28 and the third temperature sensor are both electrically connected to the temperature controller of the control module 23, the third temperature sensor is used to monitor the temperature of the slurry in the third pipeline and feed back to the temperature controller of the control module 23, the temperature controller of the control module 23 is used to control the heating power of the electric heating tube temperature control mechanism 28 to the slurry in the third pipeline, and adjust the heating power of the electric heating tube temperature control mechanism 28 to the slurry in the third pipeline in real time according to the preset temperature of the slurry.

[0086] In this embodiment, a set of precise temperature control module, namely, electric heating tube temperature control mechanism 28, is added behind the screw pump 25 to perform final precise temperature control. The electric heating tube temperature control mechanism 28 uses an electric heating tube to heat the slurry.

[0087] In the optional technical solution of this embodiment, a third pressure sensor and a third pressure relief mechanism are also provided on the third pipeline, and the third pressure sensor and the third pressure relief mechanism are both located downstream of the electric heating tube temperature control mechanism 28, and the third pressure sensor and the third pressure relief mechanism are both electrically connected to the control module 23. The third pressure sensor is used to monitor the pressure in the third pipeline and feed back to the control module 23. The control module 23 is used to control the third pressure relief mechanism to relieve the pressure on the third pipeline to prevent the third pipeline from bursting due to excessive pressure.

[0088] In this embodiment, the whole system can be divided into two control parts: feed flow control and temperature control.

[0089] Among them, flow control is mainly achieved through constant pressure control and quantitative delivery. According to the coating process, a flow rate required for coating can be roughly calculated. According to the slurry parameters, coating speed, and pipeline diameter of the conveying mechanism during coating, the approximate pressure in the pipeline can be calculated. Assuming that the calculated value is 0.1 MPa, give it a floating range of 0.08-0.12 MPa. Taking the first pipeline as an example, when the pressure in the first pipeline is lower than 0.08 MPa, the first pressure sensor detects a signal feedback to the control module 23, and the control module 23 controls the electric cylinder 3 to increase the thrust. When the pressure in the first pipeline is higher than 0.12 MPa, the first pressure sensor detects a signal feedback to the control module 23, and the control module 23 controls the electric cylinder 3 to reduce the thrust, and can cooperate with the first pressure relief mechanism to relieve the pressure on the first pipeline. The twin-screw extruder mechanism 24 is similar to the above operation. When the pressure in the second pipeline is lower than 0.08 MPa, the second pressure sensor detects a signal and feeds it back to the control module 23, and the control module 23 controls the motor current of the twin-screw extruder mechanism 24 to increase, thereby increasing the extrusion speed of the twin-screw extruder mechanism 24. When the pressure in the second pipeline is higher than 0.12 MPa, the second pressure sensor detects a signal and feeds it back to the control module 23, and the control module 23 controls the motor current of the twin-screw extruder mechanism 24 to decrease, thereby reducing the extrusion speed of the twin-screw extruder mechanism 24. Ultimately, precise control of the flow rate is achieved.

[0090] The purpose of temperature control is to increase the temperature of the slurry, reduce its viscosity, and enhance its fluidity. The specific working method is: assuming that the final coating temperature is 55℃±1℃, before starting normal coating, turn on the mold temperature controller, set the hot water temperature to 55℃, and preheat the buffer tank 1. After preheating, normal coating is performed. The first temperature sensor and the second temperature sensor are respectively set on the first pipe and the second pipe before and after the twin-screw extruder mechanism 24 for monitoring, and try to ensure that the temperature is kept at 55℃. (Since conduction heating will cause a certain amount of heat loss, the slurry temperature before finally reaching the electric heating tube temperature control mechanism 28 cannot reach the target 55℃) A third temperature sensor is provided behind the electric heating tube temperature control mechanism 28. The third temperature sensor detects the temperature signal and feeds it back to the temperature controller. The temperature controller detects that it is lower than the target temperature, thereby controlling the power regulator and increasing the output power of the electric heating tube temperature control mechanism 28. On the contrary, it is detected that it is lower than the target temperature, and then the power regulator is controlled to stop the power output or reduce the power output. The purpose of temperature control is finally achieved.

[0091] The present embodiment provides a high-solid content and high-viscosity coating system, comprising a coating machine and the above-mentioned high-solid content and high-viscosity feeding system. Therefore, the technical advantages and effects achieved by the high-solid content and high-viscosity coating system include the technical advantages and effects achieved by the above-mentioned high-solid content and high-viscosity feeding system, which will not be repeated here.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high solid content and high viscosity feeding system, characterized in that: include: A control module (23), a material pressing mechanism, a buffer tank (1), a conveying mechanism, and a frame (2); the control module (23), the material pressing mechanism, the buffer tank (1), and the conveying mechanism are all arranged on the frame (2), and the material pressing mechanism and the conveying mechanism are both electrically connected to the control module (23); The top of the cache tank (1) is provided with a tank opening, and the bottom of the cache tank (1) is provided with a discharge port; The feeding end of the conveying mechanism is connected to the discharge port, and the discharging end of the conveying mechanism is connected to the coating die head of the coating machine; The control module (23) is used to control the pressing mechanism to extend from the tank opening into the buffer tank (1), squeeze the slurry in the buffer tank (1) toward the discharge opening, and discharge the slurry from the discharge opening into the conveying mechanism; The control module (23) is also used to control the conveying mechanism to convey the slurry to the coating die head of the coating machine.

2. The high solid content and high viscosity feeding system according to claim 1, characterized in that: The material pressing mechanism comprises an electric cylinder (3) and a piston (4), and the output end of the electric cylinder (3) is connected to the piston (4); The control module (23) is electrically connected to the electric cylinder (3) and is used to control the thrust of the electric cylinder (3).

3. The high solid content and high viscosity feeding system according to claim 1, characterized in that: The conveying mechanism includes a twin-screw extruder mechanism (24) and a first pipeline; The feed end of the twin-screw extruder (24) is connected to the discharge port via the first pipe, and the discharge end of the twin-screw extruder (24) is connected to the coating die head of the coating machine; The control module (23) is electrically connected to the twin-screw extruder mechanism (24) and is used to control the motor current of the twin-screw extruder mechanism (24).

4. The high solid content and high viscosity feeding system according to claim 3, characterized in that: The conveying mechanism further includes a screw pump (25) and a second pipeline; The feed end of the screw pump (25) is connected to the discharge end of the twin-screw extruder (24) through the second pipe, and the discharge end of the screw pump (25) is connected to the coating die head of the coating machine; The control module (23) is electrically connected to the screw pump (25) and is used to control the screw pump (25) to transport the slurry.

5. The high solid content and high viscosity feeding system according to claim 4, characterized in that: It also includes a degassing mechanism; The twin-screw extruder mechanism (24) is provided with an exhaust channel, and the degassing mechanism is connected to the exhaust channel; The control module (23) is electrically connected to the degassing mechanism and is used to control the degassing mechanism to discharge air from the slurry in the twin-screw extruder mechanism (24).

6. The high solid content and high viscosity feeding system according to claim 4, characterized in that: A first pressure sensor and a first pressure relief mechanism are provided on the first pipeline, and the first pressure sensor and the first pressure relief mechanism are both electrically connected to the control module (23), the first pressure sensor is used to monitor the pressure in the first pipeline and feed back to the control module (23), and the control module (23) is used to control the first pressure relief mechanism to relieve pressure on the first pipeline; and / or; A second pressure sensor and a second pressure relief mechanism are provided on the second pipeline, and the second pressure sensor and the second pressure relief mechanism are both electrically connected to the control module (23). The second pressure sensor is used to monitor the pressure in the second pipeline and feed back the pressure to the control module (23). The control module (23) is used to control the second pressure relief mechanism to relieve pressure on the second pipeline.

7. The high solid content and high viscosity feeding system according to claim 4, characterized in that: It also includes a mold temperature controller, the mold temperature controller is electrically connected to the temperature controller of the control module (23), and the temperature controller of the control module (23) is used to control the power regulator of the mold temperature controller to adjust the power; The tank wall of the buffer tank (1) is hollowed to form a partition (26), a first water outlet is provided on the top of the partition (26), and a first water inlet is provided on the bottom, the first water inlet and the first water outlet are both connected to the mold temperature controller, and a plurality of partitions (27) are provided in the partition (26) along the direction from the first water inlet to the first water outlet, and the partitions (27) separate the partition (26) into a plurality of flow channels, and any two adjacent flow channels are connected to each other, and a first temperature sensor electrically connected to the temperature controller of the control module (23) is provided on the first pipe, and the first temperature sensor is used to monitor the temperature of the slurry in the first pipe and feed back to the temperature controller of the control module (23); and / or; The barrel assembly of the twin-screw extruder mechanism (24) is provided with a water inlet at one end and a water outlet at the other end, and a plurality of flow channels connected in sequence are provided between the water inlet and the water outlet, the water inlet is connected to the mold temperature controller, and a second temperature sensor electrically connected to the temperature controller of the control module (23) is provided on the second pipe, and the second temperature sensor is used to monitor the temperature of the slurry in the second pipe and feed back to the temperature controller of the control module (23).

8. The high solid content and high viscosity feeding system according to claim 4, characterized in that: It also includes a third pipeline, an electric heating pipe temperature control mechanism (28) and a third temperature sensor; The discharge end of the screw pump (25) is connected to the coating die head of the coating machine through the third pipeline, the electric heating tube temperature control mechanism (28) and the third temperature sensor are both arranged on the third pipeline, and the third temperature sensor is located downstream of the electric heating tube temperature control mechanism (28); The electric heating tube temperature control mechanism (28) and the third temperature sensor are both electrically connected to the temperature controller of the control module (23); the third temperature sensor is used to monitor the temperature of the slurry in the third pipe and feed it back to the temperature controller of the control module (23); the temperature controller of the control module (23) is used to control the heating power of the electric heating tube temperature control mechanism (28) on the slurry in the third pipe.

9. The high solid content and high viscosity feeding system according to claim 8, characterized in that: The third pipeline is also provided with a third pressure sensor and a third pressure relief mechanism. The third pressure sensor and the third pressure relief mechanism are both located downstream of the electric heating tube temperature control mechanism (28), and the third pressure sensor and the third pressure relief mechanism are both electrically connected to the control module (23). The third pressure sensor is used to monitor the pressure in the third pipeline and feed it back to the control module (23). The control module (23) is used to control the third pressure relief mechanism to relieve pressure on the third pipeline.

10. A high solid content and high viscosity coating system, characterized in that: The invention comprises a coating machine and the high-solid-content and high-viscosity feeding system according to any one of claims 1 to 9.

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