CN217989828U - Coating die head capable of adjusting surface density - Google Patents

Abstract

The utility model discloses a coating die head of adjustable areal density, including last die head, lower die head, form the coating mouth between last die head and the lower die head, the terminal surface shaping is fluted before going up the die head, upward be equipped with a plurality of clearance adjustment mechanism on the die head, clearance adjustment mechanism's flexible end pastes with recess bottom inner wall mutually and leans on. The utility model discloses in, paste with recess bottom inner wall through the flexible end with clearance adjustment mechanism mutually for clearance between the coating mouth is adjustable, through a plurality of clearance adjustment mechanism's setting, can adjust the clearance of coating mouth different positions, ensures under the condition that has other factors, adjusts the uniformity of guaranteeing surface density through this.

Description

Coating die head capable of adjusting surface density

Technical Field

The utility model relates to a coating die head equipment technical field, more specifically relate to a coating die head of adjustable surface density.

Background

With the rapid development of lithium batteries, the battery capacity and the interface are important technical indexes of batteries. In the production process of the lithium battery, the uniformity and consistency of the surface density of the coated coating are important factors influencing the capacity and the interface of the battery. The uniformity of the surface density of the coating is mainly determined by the flow rate of the slurry, the pressure of the internal cavity of the die head and the gap of the coating opening. However, the existing coating die head has a single feeding pipe, so that the pressure in a die cavity cannot be ensured to be uniform, the gap of a coating opening is fixed, the adjustment of different positions of the transverse coating surface density cannot be realized, and the consistency of the surface density cannot be ensured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that how to realize the regulation of the horizontal surface density of die head coating.

The utility model discloses a following technical means realizes solving above-mentioned technical problem: the utility model provides an adjustable surface density's coating die head, includes die head, lower die head, form the coating mouth between upper die head and the lower die head, the terminal surface shaping is fluted before the upper die head, be equipped with a plurality of clearance adjustment mechanism on the upper die head, clearance adjustment mechanism's flexible end and recess bottom inner wall paste mutually and lean on.

Through leaning on clearance adjustment mechanism's flexible end and recess bottom inner wall mutually for the clearance between the coating mouth is adjustable, through a plurality of clearance adjustment mechanism's setting, can adjust the clearance of coating mouth different positions, guarantees under the condition that has other factors, guarantees through this regulation the uniformity of guaranteeing surface density.

According to the preferable technical scheme, the gap adjusting mechanism comprises a screw rod driving mechanism, a first fixing rod and a first support, the first fixing rod is arranged in the upper die head in a sliding mode, the bottom of the first fixing rod extends into the groove, the screw rod driving mechanism is fixedly arranged at the top of the upper die head through the first support, and the output end of the screw rod driving mechanism is abutted to the bottom wall of the groove through the first fixing rod.

As preferred technical scheme, the die head is equipped with storage cavity, feeding and is responsible for, a plurality of feeding branch pipe, the feeding is responsible for and is communicated with the storage cavity through a plurality of feeding branch pipes, and is a plurality of all be equipped with the governing valve in the feeding branch pipe, through the setting of a plurality of feeding branch pipes, guarantee to be responsible for the medium of input through the feeding and can evenly get into the storage cavity to guarantee the homogeneity of feeding, through the setting of governing valve, the chamber pressure of adjustable different positions.

According to the preferable technical scheme, the upper die head is provided with a cavity pressure adjusting mechanism, the cavity pressure adjusting mechanism comprises a second support, a servo motor and a second fixing rod, the servo motor is fixedly arranged at the top of the upper die head through the second support, the output end of the servo motor is in transmission connection with the second fixing rod, the second fixing rod is fixedly connected with a valve core of the adjusting valve, the servo motor can drive the second fixing rod, namely the valve to rotate, the opening degree of the valve in different pipelines can be adjusted, and therefore the cavity pressure in different pipelines can be adjusted.

As preferred technical scheme, still include chamber pressure monitoring mechanism, chamber pressure monitoring mechanism includes chamber pressure probe, pressure display is fixed to be located die head top portion and is located between chamber pressure adjustment mechanism and the clearance adjustment mechanism, chamber pressure probe stretches into the storage cavity, and links to each other with pressure display, but through the chamber pressure of pressure display and chamber pressure probe accurate connection different pipelines, is convenient for provide data support for the regulation.

As a preferred technical scheme, the device further comprises a controller, wherein the gap adjusting mechanism and the cavity pressure adjusting mechanism are respectively and electrically connected with the controller, the pressure display is electrically connected with the controller, and the controller is connected with an area density instrument.

As the preferred technical scheme, the lower die head is provided with discharge ports communicated with the material storage cavity at two ends, and the material storage cavity can be conveniently cleaned through the discharge ports.

As a preferred technical scheme, the cavity pressure adjusting mechanism further comprises a sealing shaft sleeve, and the sealing shaft sleeve is fixedly arranged at the top of the upper die head and is in running fit with the second fixing rod.

As the preferred technical scheme, a gasket is further arranged between the upper die head and the lower die head and is connected and fastened with the upper die head and the lower die head through bolts, an opening is formed in one end, facing the coating opening, of the gasket, and the width of the coated slurry can be controlled through the arrangement of the opening of the gasket.

Preferably, a plurality of the gap adjusting mechanisms are linearly arranged along the length direction of the die head.

The utility model has the advantages of:

(1) The utility model discloses in, paste with recess bottom inner wall through the flexible end with clearance adjustment mechanism mutually for clearance between the coating mouth is adjustable, through a plurality of clearance adjustment mechanism's setting, can adjust the clearance of coating mouth different positions, ensures under the condition that has other factors, adjusts the uniformity of guaranteeing surface density through this.

(2) The utility model discloses in, through the setting of a plurality of feeding branch pipes, guarantee to be responsible for the medium of input through the feeding and can evenly get into the storage cavity to guarantee the homogeneity of feeding, can drive the second dead lever through servo motor and be the valve rotation, can adjust the valve aperture in the different pipelines, the chamber pressure of adjustable different positions.

(3) The utility model discloses in, but the chamber pressure in the different pipelines of accurate connection through pressure display and chamber pressure probe is convenient for support for adjusting the data that provides, has improved the accuracy of adjusting.

Drawings

Fig. 1 is a schematic view of an overall structure of a coating die head capable of adjusting areal density provided by the embodiment of the invention;

fig. 2 is a schematic diagram illustrating a principle of an adjustable areal density coating die head provided by an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a coating die head capable of adjusting areal density according to an embodiment of the present invention;

fig. 4 is a schematic top view of a lower die head of a coating die head with adjustable areal density according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a bottom view of an upper die of a coating die with adjustable areal density according to an embodiment of the present invention;

fig. 6 is a schematic diagram of an explosion structure of a coating die head capable of adjusting areal density provided by the embodiment of the invention;

fig. 7 is a data diagram of the area density of a coating die before improvement according to an embodiment of the present invention;

fig. 8 is a data diagram of the improved area density of the coating die according to an embodiment of the present invention;

reference numerals: 1. a coating port; 2. an upper die head; 21. a groove; 3. a lower die head; 31. a material storage cavity; 32. a feeding main pipe; 33. a feeding branch pipe; 34. adjusting a valve; 35. a discharge port; 4. a gasket; 5. A gap adjustment mechanism; 51. a screw rod driving mechanism; 52. a first fixing lever; 53. a first support; 6. a chamber pressure adjusting mechanism; 61. a second support; 62. a servo motor; 63. a second fixing bar; 64. a coupling; 65. sealing the shaft sleeve; 7. a chamber pressure monitoring mechanism; 71. a cavity pressure probe; 72. a pressure display; 8. a signal line; 9. a controller; 10. an area density meter; 11. a material storage tank; 12. a screw pump; 13. And (7) refluxing the tank.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are clearly and completely described below in combination with the technical solution of the embodiments of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, an adjustable areal density coating die comprises: the upper die head 2, the lower die head 3, the gasket 4, the gap adjusting mechanism 5, the cavity pressure adjusting mechanism 6, the cavity pressure monitoring mechanism 7 and the signal line 8 are arranged, a coating opening 1 is formed between the upper die head 2 and the lower die head 3, a groove 21 is formed in the front end face of the upper die head 2, the gasket 4 is located between the upper die head 2 and the lower die head 3 and is connected and fastened with the upper die head 2 and the lower die head 3 through bolts, referring to fig. 6, an opening is formed in one end, facing the coating opening 1, of the gasket 4, the gasket 4 is used for controlling the width of coated slurry, the gap adjusting mechanism 5, the cavity pressure adjusting mechanism 6 and the cavity pressure monitoring mechanism 7 are all arranged on the upper die head 2, the cavity pressure monitoring mechanism 7 is located between the cavity pressure adjusting mechanism 6 and the gap adjusting mechanism 5, and the cavity pressure adjusting mechanism 6 and the cavity pressure monitoring mechanism 7 are all connected with the signal line 8.

Referring to fig. 2, the device further comprises a controller 9, an area density meter 10, a storage tank 11, a screw pump 12 and a backflow tank 13, wherein the gap adjusting mechanism 5 and the cavity pressure adjusting mechanism 6 are respectively electrically connected with the controller 9, the pressure display 72 is electrically connected with the controller 9, the controller 9 is connected with the area density meter 10 and feeds back area density data to the controller 9 in time through the area density meter 10, the controller 9 is connected with the gap adjusting mechanism 5 and the cavity pressure adjusting mechanism 6 through a control line, the storage tank 11 is connected with a feed inlet of the lower die head 3, the screw pump 12 is arranged on a connecting pipeline of the storage tank 11, and the backflow tank 13 is arranged at a feed opening.

Referring to fig. 3, the gap adjusting mechanism 5 includes a screw rod driving mechanism 51, a first fixing rod 52 and a first support 53, the first fixing rod 52 is slidably disposed in the upper die head 2, the bottom of the first fixing rod extends into the groove 21, the screw rod driving mechanism 51 is fixedly disposed at the top of the upper die head 2 through the first support 53, and the output end of the screw rod driving mechanism is abutted to the bottom wall of the groove 21 through the first fixing rod 52, the screw rod driving mechanism 51 has a screw rod linear driving module which is a commercially available component, so that detailed description is omitted, the screw rod driving mechanism 51 has a driving motor, the driving motor drives the output end of the driving motor to drive the first fixing rod 52 to move up and down, the bottom end of the first fixing rod 52 can be driven to be abutted to the inner wall of the bottom of the groove 21, thereby adjusting the gap of the coating opening 1 according to the cavity pressure and the area density at different positions, the top of the upper die head 2 is fixedly connected with a sealing shaft sleeve 65 adapted to the first fixing rod 52, and the gap adjusting mechanisms 5 are linearly arranged along the length direction of the die head.

Referring to fig. 4, the lower die head 3 is provided with a storage cavity 31, a feeding main pipe 32, a plurality of feeding branch pipes 33, a regulating valve 34, and a discharge port 35, the feeding main pipe 32 is connected to the storage tank 11, the feeding main pipe 32 is communicated with the storage cavity 31 through the feeding branch pipes 33, the regulating valve 34 is disposed in each of the feeding branch pipes 33, discharge ports 35 communicated with the storage cavity 31 are further disposed at two ends of the lower die head 3, when the storage cavity 31 is cleaned, the material is discharged into the backflow tank 13 through the discharge ports 35, the upper die head 2 is provided with the cavity pressure regulating mechanism 6, the cavity pressure regulating mechanism 6 includes a second support 61, a servo motor 62, a second fixing rod 63, a coupler 64, and a sealing shaft sleeve 65, the servo motor 62 is fixedly disposed at the top of the upper die head 2 through the second support 61, an output end of the servo motor is fixedly connected to the second fixing rod 63, the second fixing rod 63 is fixedly connected to a valve core of the regulating valve 34, the sealing shaft sleeve 65 is fixedly disposed at the top of the upper die head 2, the sealing shaft sleeve 65 is rotatably matched to the second fixing rod 63, in this embodiment, the cavity pressure regulating mechanism 6 is disposed in number matched to the number of the feeding branch pipes 33, and the regulating valve is corresponding to the regulating valve 34.

Referring to fig. 2 and 5, the cavity pressure monitoring mechanism 7 includes a cavity pressure probe 71 and a pressure display 72, the pressure display 72 is fixedly disposed on the top of the upper die head 2 and located between the cavity pressure adjusting mechanism 6 and the gap adjusting mechanism 5, and the cavity pressure probe 71 extends into the material storage cavity 31 and is connected to the pressure display 72.

The using method comprises the following steps: slurry is conveyed from a storage tank 11 through a screw pump 12 from a feeding main pipe 32 and is conveyed to different positions of a storage cavity 31 in a lower die head 3 through a feeding branch pipe 33, cavity pressure probes 71 at different positions in the storage cavity 31 detect cavity pressures at different positions in the storage cavity 31 and transmit pressure values to a pressure display 72, the pressure display 72 transmits the cavity pressure values to a controller 9 through a signal line 8, the controller 9 controls a servo motor 62 through a control line (not shown), so as to control the opening of an adjusting valve 34, so as to control feeding flow rates of different feeding branch pipes 33 and further play a role in adjusting the cavity pressures at different positions of the storage cavity 31, in the coating process, an area density meter 10 monitors density conditions behind the coating of a pole piece in real time and transmits area density values to the controller 9 through the signal line 8, if the area density deviation phenomenon occurs at individual positions, the controller 9 controls a screw rod driving mechanism 51 to move through the control line (not shown), so as to adjust a first fixing rod 52 to abut against the inner wall at the bottom of a groove 21, thereby adjust the gap of a coating port 1, further adjust the area density of a transverse coating port 1, and further adjust the transverse density, and refer to fig. 7 and fig. 7The sex is more stable, and the range of the sex deviation can be controlled to be +/-1 g/m ² )。

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (6)

1. The coating die head capable of adjusting the surface density is characterized by comprising an upper die head (2) and a lower die head (3), wherein a coating opening (1) is formed between the upper die head (2) and the lower die head (3), a groove (21) is formed in the front end face of the upper die head (2), a plurality of gap adjusting mechanisms (5) are arranged on the upper die head (2), and the telescopic ends of the gap adjusting mechanisms (5) are attached to the inner wall of the bottom of the groove (21);

the gap adjusting mechanism (5) comprises a screw rod driving mechanism (51), a first fixing rod (52) and a first support (53), the first fixing rod (52) is arranged in the upper die head (2) in a sliding mode, the bottom of the first fixing rod extends into the groove (21), the screw rod driving mechanism (51) is fixedly arranged at the top of the upper die head (2) through the first support (53), and the output end of the screw rod driving mechanism is abutted to the bottom wall of the groove (21) through the first fixing rod (52);

the lower die head (3) is provided with a material storage cavity (31), a feeding main pipe (32) and a plurality of feeding branch pipes (33), the feeding main pipe (32) is communicated with the material storage cavity (31) through the plurality of feeding branch pipes (33), and regulating valves (34) are arranged in the plurality of feeding branch pipes (33);

the die head is characterized in that a cavity pressure adjusting mechanism (6) is arranged on the upper die head (2), the cavity pressure adjusting mechanism (6) comprises a second support (61), a servo motor (62) and a second fixing rod (63), the servo motor (62) is fixedly arranged at the top of the upper die head (2) through the second support (61), the output end of the servo motor is in transmission connection with the second fixing rod (63), and the second fixing rod (63) is fixedly connected with a valve core of the adjusting valve (34); still include chamber pressure monitoring mechanism (7), chamber pressure monitoring mechanism (7) are including chamber pressure probe (71), pressure display (72) are fixed to be located die head (2) top and are located between chamber pressure adjustment mechanism (6) and clearance adjustment mechanism (5), chamber pressure probe (71) stretch into storage cavity (31), and link to each other with pressure display (72).

2. The coating die head capable of adjusting the areal density as claimed in claim 1, further comprising a controller (9), wherein the gap adjusting mechanism (5) and the cavity pressure adjusting mechanism (6) are respectively electrically connected with the controller (9), the pressure display (72) is electrically connected with the controller (9), and the controller (9) is connected with an areal density meter (10).

3. The coating die head with the adjustable areal density as claimed in claim 1, wherein the two ends of the lower die head (3) are further provided with discharge ports (35) communicated with the storage cavity (31).

4. The coating die head capable of adjusting the areal density as claimed in claim 1, wherein the chamber pressure adjusting mechanism (6) further comprises a sealing bushing (65), and the sealing bushing (65) is fixedly arranged at the top of the upper die head (2) and is rotatably engaged with the second fixing rod (63).

5. The coating die head with the adjustable areal density as claimed in claim 1, characterized in that a gasket (4) is further arranged between the upper die head (2) and the lower die head (3) and is connected and fastened with the upper die head (2) and the lower die head (3) through bolts, and an opening is formed in one end of the gasket (4) facing the coating opening (1).

6. The coating die capable of adjusting the areal density as claimed in claim 1, wherein a plurality of the gap adjusting mechanisms (5) are arranged linearly along the length of the die.

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