CN219150528U

CN219150528U - Lip cleaning equipment and coating device

Info

Publication number: CN219150528U
Application number: CN202223551052.7U
Authority: CN
Inventors: 罗新; 王涂亮
Original assignee: Weilai Battery Technology Anhui Co ltd
Current assignee: Weilai Battery Technology Anhui Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-09
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to lip cleaning equipment and a coating device. The lip cleaning apparatus includes: the space above the base and on the opposite side of the die lip defines a cleaning station; the driving mechanism is arranged on the base; the cleaning executing mechanism is connected with the driving mechanism and can enter and exit the cleaning station under the driving of the driving mechanism; the cleaning executing mechanism comprises a cleaning box, a cleaner and a sewage draining channel, wherein the cleaning box is provided with a cleaning opening, the cleaning opening is used for being in butt joint with the die head lip, the cleaner is arranged in the cleaning box and used for cleaning the die head lip, and the sewage draining channel is communicated with the cleaning box and used for discharging dirt generated by cleaning out of the cleaning box. Compared with the manual cleaning mode in the prior art, the automatic coating machine has the advantages of high automation degree, time and labor saving, reduction of labor intensity of workers, good and stable cleaning effect, high cleaning efficiency and no influence on subsequent coating quality due to volatilization of alcohol.

Description

Lip cleaning equipment and coating device

Technical Field

The utility model relates to the technical field of lithium battery manufacturing, in particular to lip cleaning equipment and a coating device.

Background

Currently, lithium batteries are widely used in new energy fields, for example, lithium batteries are equipped in new energy automobiles, and play an important role as a power source of the new energy automobiles. In the process of lithium batteries, coating is a very critical procedure, and the quality of the coating effect greatly influences the electrical performance of the lithium batteries. The lithium battery coating process specifically refers to that slurry is sprayed out through a die gap through a coating die of a coating machine so as to form a slurry coating with uniform texture on the surface of a battery pole piece. However, in order to ensure a certain slurry spraying pressure, the die gap is usually designed to be narrow, and when the coater is stopped or stopped, the slurry remained in the die gap is easy to agglomerate and agglomerate in a standing state, so that the die gap is partially or even completely blocked, and the normal work and the coating effect of the coating die are affected. In this regard, the coating die needs to be cleaned regularly.

The cleaning mode that adopts at present is artifical clean to the lip of coating die head of using dust-free cloth to and use the thick liquids of stopper insert the mediation drier-knot in the die head gap, and such cleaning mode can not only consume a large amount of manpower and materials costs, and clean time is long, and inefficiency, and the cleaning effect is limited by factors such as workman's technical skill degree and can't obtain guaranteeing, and dust-free cloth uses alcohol to clean the lip, and alcohol volatilizees can influence the humiture and the cleanliness factor of processing environment, can cause certain influence to the stability and the quality of coating processing.

Disclosure of Invention

Based on this, it is necessary to provide a lip cleaning device and a coating apparatus, which aims to solve the problems of time and effort consumption, poor cleaning effect, low efficiency and influence on the stability and quality of coating processing in the cleaning operation in the prior art.

In one aspect, the present application provides a lip cleaning apparatus for automatically cleaning a die lip of a coating die, the lip cleaning apparatus comprising:

a base, the cleaning station being defined by a space above the base and on an opposite side of the die lip;

the driving mechanism is arranged on the base; and

the cleaning executing mechanism is connected with the driving mechanism and can enter and exit the cleaning station under the driving of the driving mechanism; the cleaning executing mechanism comprises a cleaning box, a cleaner and a sewage draining channel, wherein the cleaning box is provided with a cleaning opening, the cleaning opening is used for being in butt joint with the die head lip, the cleaner is arranged in the cleaning box and used for cleaning the die head lip, and the sewage draining channel is communicated with the cleaning box and used for discharging dirt generated by cleaning out of the cleaning box.

When the coating device is used for normal coating processing, the cleaning executing mechanism is recovered on the base by the driving mechanism to withdraw from the cleaning station, and the coating die head is close to the coating back roller, so that the coating lip of the coating die head can carry out coating processing on the battery pole piece moving on the coating back roller. When the coating processing is finished or suspended, the coating die head retreats towards the direction away from the coating back roller, and then the driving mechanism drives the cleaning executing mechanism to enter the cleaning station, so that the cleaning opening of the cleaning box is in butt joint with the die head lip, at the moment, the cleaner is started to automatically clean the die head lip, so that residual slurry in a die head gap of the die head lip or solidified slurry is cleaned, the phenomenon that the slurry is kept still and solidified to cause the blockage of the die head lip is avoided, the continuous and reliable working capacity of the coating die head is ensured, and dirt generated in cleaning can be discharged out of the cleaning box through a sewage draining channel. Compared with the manual cleaning mode in the prior art, the automatic coating machine has the advantages of high automation degree, time and labor saving, reduction of labor intensity of workers, good and stable cleaning effect, high cleaning efficiency and no influence on subsequent coating quality due to volatilization of alcohol.

The technical scheme of the application is further described below:

in one embodiment, the cleaner is configured as an ultrasonic cleaner, and the cleaning port is provided with a seal for sealing abutment with the die lip.

In one embodiment, the cleaning executing mechanism further comprises an adjusting rod, the adjusting rod is rotatably arranged in the cleaning box, and the cleaner is arranged on the adjusting rod.

In one embodiment, the cleaning executing mechanism further comprises a servo motor, the servo motor is arranged on the cleaning box, and a driving shaft of the servo motor is connected with the adjusting rod.

In one embodiment, the cleaning actuator further comprises a vacuum generator disposed on the cleaning tank and capable of creating a vacuum environment within the cleaning tank.

In one embodiment, the driving mechanism comprises a swing rod and a driver for outputting rotary power, the driver is arranged on the base and is in driving connection with the swing rod, and the swing rod is in driving connection with the cleaning executing mechanism.

In one embodiment, the driving mechanism comprises a lifting driving unit and a translation driving unit, the lifting driving unit is arranged on the base, the translation driving unit is connected with the lifting driving unit, and the cleaning executing mechanism is connected with the translation driving unit; or alternatively

The driving mechanism comprises a lifting driving unit and a translation driving unit, the translation driving unit is arranged on the base, the lifting driving unit is connected with the translation driving unit, and the cleaning executing mechanism is connected with the lifting driving unit.

In one embodiment, the cleaning tank includes a tank body and a tank cover removably sealed to the tank body.

In another aspect, the present application also provides a coating apparatus, including:

coating a back roller;

the coating dies are arranged on opposite sides of the coating back roller at intervals, the coating dies can be close to or far away from the coating back roller, and the cleaning station is formed between the coating dies and the coating back roller when the coating dies are far away from the coating back roller; and

the lip cleaning device is arranged on the opposite side of the coating die head and can enter the cleaning station to clean the die lip of the coating die head.

In one embodiment, the coating die head comprises a first die body, a second die body and a third die body, wherein the first die body and the second die body are arranged at intervals and form a first coating flow channel, and the second die body and the third die body are arranged at intervals and form a second coating flow channel;

the first die body comprises a first lip, the third die body comprises a second lip, the first lip and the second lip are matched to form the die head lip, and the distance between the first lip and the second lip is adjustable.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a coating apparatus according to an embodiment of the present application.

Reference numerals illustrate:

100. a coating device; 10. coating a back roller; 20. a coating die head; 21. a first die body; 211. a first lip; 22. a second die body; 23. a third die body; 231. a third lip; 24. a first coating flow path; 25. a second coating flow path; 30. lip cleaning equipment; 31. a driving mechanism; 311. swing rod; 32. cleaning an executing mechanism; 321. a cleaning tank; 322. a cleaner; 323. a trapway; 324. an adjusting rod; 325. a vacuum generator; 33. a seal; 40. and (5) cleaning a station.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

As shown in fig. 1, which is a schematic structural diagram of a coating apparatus 100 according to an embodiment of the present application, the coating apparatus 100 is shown to include only: coating back roll 10, coating die 20, and lip cleaning apparatus 30. Wherein the coating die 20 is disposed at the left side, the coating back roll 10 is disposed at the opposite side (right side) of the horizontal direction of the coating die 20, and the die lip of the coating die 20 is disposed toward the coating back roll 10, thereby facilitating the coating process of the battery pole piece moving on the coating back roll 10. The lip cleaning apparatus 30 is located between the coating die 20 and the coating back roller 10.

It is understood that the coating die 20 is coated with a slurry including, but not limited to, a positive electrode slurry, a negative electrode slurry, and the like.

In the present embodiment, the coating dies 20 are disposed at intervals on opposite sides of the coating back roller 10, and the coating dies 20 can be close to or apart from the coating back roller 10. For example, the coating die 20 is connected to any one of a linear driving device of a cylinder, an electric push rod, or an oil cylinder so as to be capable of horizontally reciprocating toward or away from the coating back roller 10.

A cleaning station 40 is formed between the coating die 20 and the coating back roll 10 as the coating die 20 is spaced away from the coating back roll 10. The cleaning station 40 is understood to be a space formed between the coating die 20 and the coating back roller 10 capable of accommodating the lip cleaning apparatus 30. Lip cleaning apparatus 30 is disposed on the opposite side of coating die 20 and is capable of entering cleaning station 40 to perform cleaning operations on the die lips of coating die 20.

With continued reference to fig. 1, in the present embodiment, the coating die 20 includes a first die body 21, a second die body 22, and a third die body 23, where the first die body 21 and the second die body 22 are spaced apart and form a first coating flow channel 24, and the second die body 22 and the third die body 23 are spaced apart and form a second coating flow channel 25. In operation, the first coating runner 24 and the second coating runner 25 can simultaneously output slurry, thereby performing a double coating process. Of course, the single-layer coating process may be performed by selectively outputting the slurry alone from the first coating flow channel 24 or the second coating flow channel 25. The coating die 20 is flexible in its mode of operation and can meet the needs of different processing scenarios.

The first die body 21 comprises a first lip 211, the third die body 23 comprises a second lip, the first lip 211 and the second lip are matched to form a die head lip, and the distance between the first lip 211 and the second lip is adjustable. Specifically, the first lip 211 and the second lip can be close to or far away from each other in a parallel manner, the adjustable range of the distance is 750mm-1800mm, the coating processing requirements of battery pole pieces with different widths are met, cleaning is convenient, and the problem of blockage caused by slurry agglomeration is avoided.

In some embodiments, lip cleaning apparatus 30 is used to automatically clean the die lip of coating die 20, lip cleaning apparatus 30 comprising: a base (not shown), a drive mechanism 31, and a cleaning actuator 32. The base is a load-bearing body for loading the stationary drive mechanism 31 and the cleaning actuator 32.

With continued reference to FIG. 1, a cleaning station 40 is defined by the space above the base and on the opposite side of the die lip; the driving mechanism 31 is arranged on the base; the cleaning executing mechanism 32 is connected with the driving mechanism 31 and can enter and exit the cleaning station 40 under the driving of the driving mechanism 31; the cleaning actuator 32 includes a cleaning tank 321, a cleaner 322, and a trapway 323, the cleaning tank 321 is provided with a cleaning port for docking with the die lip, the cleaner 322 is disposed in the cleaning tank 321 and is used for cleaning the die lip, and the trapway 323 is communicated with the cleaning tank 321 for discharging dirt generated by cleaning out of the cleaning tank 321.

In order to reduce space occupation and make the lip cleaning apparatus 30 more convenient to transfer and store, the base is provided with a storage cavity, and in a non-working state, the driving mechanism 31 drives the cleaning executing mechanism 32 to be stored in the storage cavity. When die lip cleaning is required, the drive mechanism 31 drives the cleaning actuator 32 to extend from the chamber and into the cleaning station 40.

In summary, implementing the technical scheme of the embodiment has the following beneficial effects: the lip cleaning apparatus 30 of the above-described embodiment is applied to the coating device 100, and when the coating process is normally performed, the cleaning actuator 32 is retracted on the base by the driving mechanism 31 to exit the cleaning station 40, and the coating die head 20 approaches the coating back roller 10, so that the coating lip of the coating die head 20 can perform the coating process on the battery pole piece moving on the coating back roller 10.

When the coating process is finished or suspended, the coating die head 20 is retracted in a direction away from the coating back roller 10, and then the driving mechanism 31 drives the cleaning executing mechanism 32 to enter the cleaning station 40, so that the cleaning opening of the cleaning box 321 is in butt joint with the die lip, at this time, the cleaner 322 is started to automatically clean the die lip, so as to clean the residual slurry in the die gap of the die lip or the solidified slurry, prevent the slurry from standing still and being condensed and solidified to block the die lip, ensure that the coating die head 20 has continuous and reliable working capacity, and clean the generated dirt can be discharged out of the cleaning box 321 through the blow-down channel 323.

Compared with the manual cleaning mode in the prior art, the automatic coating machine has the advantages of high automation degree, time and labor saving, reduction of labor intensity of workers, good and stable cleaning effect, high cleaning efficiency and no influence on subsequent coating quality due to volatilization of alcohol.

Specifically, the cleaner 322 is provided as an ultrasonic cleaner on the basis of the above-described embodiment, and the cleaning port is provided with a seal member 33, the seal member 33 being for sealing abutment with the die lip. Compared with the mode of adopting water jet to directly wash, the ultrasonic cleaner utilizes cavitation effect, acceleration effect and the like in liquid to soften dry solid slurry in a die gap of a die lip, so as to disperse, emulsify and finally strip each other, thereby achieving the effect of more rapid and thorough cleaning. According to the practical work, the ultrasonic cleaner has the best cleaning and decontaminating effect under the working frequency of 45-65 HZ.

The sealing member 33 is specifically a sealing ring or a sealing gasket fixed on the side wall of the cleaning port, and the sealing member 33 is tightly pressed against the outer wall of the die lip to obtain good sealing performance, so that leakage of cleaning liquid during ultrasonic cleaning is prevented. For example, in this embodiment, the seal ring is a rubber ring.

With continued reference to fig. 1, further, the cleaning actuator 32 further includes an adjusting lever 324, the adjusting lever 324 is rotatably disposed in the cleaning tank 321, and the cleaner 322 is disposed on the adjusting lever 324. The operation of the adjustment lever 324 rotates the cleaner 322, and can adjust the position of the cleaner 322 to ensure that the cleaning opening of the cleaner 322 is accurately abutted with the die lip of the coating die 20.

Further, the cleaning actuator 32 further includes a servo motor mounted on the cleaning tank 321, and a driving shaft of the servo motor is connected to the adjusting lever 324. The servo motor not only can realize that the automatic driving adjusting rod 324 and the cleaner 322 rotate and improve the automation level of the lip cleaning equipment 30, but also has more accurate power output, is favorable for realizing the fine adjustment of the position of the cleaning port, ensures that the cleaning port is accurately butted with the lip of the die head, and avoids rigid collision damage.

In addition, in accordance with any of the above embodiments, the cleaning actuator 32 further includes a vacuum generator 325, and the vacuum generator 325 is disposed on the cleaning tank 321 and is capable of creating a vacuum environment within the cleaning tank 321. When the cleaner 322 is started to clean the lip of the die, the vacuum generator 325 is synchronously opened, and a vacuum environment is created in the cleaning box 321, so that bubbles generated by ultrasonic cleaning can be prevented from entering the die cavity of the coating die 20, the subsequent coating quality is affected, and the generated cleaning waste liquid is discharged from the blow-off channel 323 with slurry impurities contained therein, so that the lip of the die is ensured to be clean.

In still other embodiments, the driving mechanism 31 includes a swing link 311 and a driver for outputting rotational power, the driver is disposed on the base, and the driver is in driving connection with the swing link 311, and the swing link 311 is in driving connection with the cleaning actuator 32. During cleaning operation, the driver can drive the swing rod 311 to drive the cleaning executing mechanism 32 to extend out of the base in an arc motion track and lift into the cleaning station 40, so that the die lip is convenient to clean.

Alternatively, as an alternative to the above embodiment, the driving mechanism 31 includes a lift driving unit provided on the base and a translational driving unit connected to the lift driving unit, and the cleaning actuator 32 is connected to the translational driving unit. Or the driving mechanism 31 comprises a lifting driving unit and a translation driving unit, the translation driving unit is arranged on the base, the lifting driving unit is connected with the translation driving unit, and the cleaning executing mechanism 32 is connected with the lifting driving unit. The difference between the embodiment and the above embodiment is that the lifting driving unit may be further adopted to drive the cleaning executing mechanism 32 to lift to be transversely parallel to the die lip, and then the translation driving unit drives the cleaning executing mechanism 32 to horizontally move to contact with the die lip (or to translate first and then lift), which also facilitates the cleaning executing mechanism 32 to enter and exit the cleaning station 40, and improves the cleaning efficiency.

In other embodiments, the cleaning tank 321 includes a tank body and a tank cover that is removably sealed to the tank body. Therefore, the box cover is convenient to be opened periodically, and cleaning liquid is added into the box body or the inner wall of the box body is cleaned.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Claims

1. A lip cleaning apparatus for automatically cleaning a die lip of a coating die, the lip cleaning apparatus comprising:

the driving mechanism is arranged on the base; and

2. The lip cleaning apparatus according to claim 1, wherein the cleaner is provided as an ultrasonic cleaner, and a seal member for sealing abutment with the die lip is provided on the cleaning port.

3. The lip cleaning apparatus of claim 1, wherein the cleaning actuator further comprises an adjustment lever rotatably disposed in the cleaning tank, the cleaner being mounted on the adjustment lever.

4. The lip cleaning apparatus of claim 3, wherein the cleaning actuator further comprises a servo motor mounted on the cleaning tank, and a driving shaft of the servo motor is connected with the adjusting lever.

5. The lip cleaning apparatus of claim 1, wherein the cleaning actuator further comprises a vacuum generator disposed on the cleaning tank and capable of creating a vacuum environment within the cleaning tank.

6. The lip cleaning apparatus according to claim 1, wherein the driving mechanism includes a swing link and a driver for outputting rotational power, the driver is provided on the base, and the driver is in driving connection with the swing link, and the swing link is in driving connection with the cleaning actuator.

7. The lip cleaning apparatus according to claim 1, wherein the driving mechanism includes a lift driving unit and a translation driving unit, the lift driving unit is provided on the base, the translation driving unit is connected with the lift driving unit, and the cleaning executing mechanism is connected with the translation driving unit; or alternatively

8. The lip cleaning apparatus of claim 1, wherein the cleaning tank comprises a tank body and a tank cover, the tank cover being removably sealed to the tank body.

9. A coating apparatus, characterized by comprising:

coating a back roller;

the lip cleaning apparatus according to any one of claims 1 to 8, being provided on opposite sides of the coating die and being capable of entering the cleaning station to perform cleaning work on a die lip of the coating die.

10. The coating apparatus of claim 9 wherein the coating die comprises a first die body, a second die body, and a third die body, the first die body being spaced apart from the second die body and defining a first coating flow channel, the second die body being spaced apart from the third die body and defining a second coating flow channel;