CN220361423U - Battery film coating device - Google Patents

Abstract

The battery film coating device comprises a box body, wherein a coating mechanism, an extrusion mechanism and a scraping mechanism are sequentially arranged in the box body along the feeding direction of a battery film; the coating mechanism comprises a coating roller which is rotatably arranged, one side of the coating roller is provided with a coating shell, the coating shell is provided with a discharge hole facing the coating roller, and opposite side plates in the coating shell are arranged in a sliding way in opposite directions through adjusting pieces and adjust the width of the discharge hole. The utility model solves the problems that the coating range of the coating device in the prior art is fixed and can not be adjusted and used according to the battery films with different widths; along with long-time scraping of the scraper, scraped raw materials are accumulated at the scraper continuously, and the uniformity of the smearing thickness of the battery membrane is affected.

Description

Battery film coating device

Technical Field

The utility model relates to the technical field of coating devices, in particular to a battery film coating device.

Background

In the preparation process of the lithium battery, the coating quality of the battery membrane has important significance on the capacity, consistency, safety and the like of the lithium battery.

The micro gravure roll coating is a contact type coating, and because the contact type coating does not need to use a back roll, adverse factors caused by the use of the back roll, such as wrinkles, cracks and the like on a coating surface, can be avoided, and can be used for coating a thin coating on a film, and is suitable for coating high-precision products such as lithium battery films.

The prior art discloses a patent with publication number CN218655193U, and this scheme includes the knife coating component, little gravure roll, detecting element, adjusting part, installs the scraper in the knife coating component, the cutting edge of scraper and the surface of little gravure roll contact each other, and little gravure roll sets up to can be with coating liquid coating to the substrate in order to form the diaphragm when substrate and the surface contact of little gravure roll, and detecting element is used for detecting the areal density of diaphragm, and adjusting part sets up the deformation volume in the different positions of scraper along its length direction that can be adjusted.

The prior devices, including the above patents, gradually expose the disadvantages of the technology with use, mainly in the following aspects:

first, the coating scope of the coating component in the existing battery diaphragm coating device is fixed, when the same coating device is used for coating different battery diaphragms, the corresponding type of coating shell needs to be replaced, the replacement of the coating shell needs to be removed and then the assembly of the component of another type is carried out, the disassembly and assembly process is complex, when the battery diaphragms on the existing coating roller move, the coating shell is easy to displace after touching, and uneven coating is caused.

Secondly, the existing battery membrane coating device directly uses the extrusion roller to extrude raw materials on the battery membrane after coating the battery membrane, partial area coating is uneven in the prior coating process, and the uneven coating position easily causes poor extrusion effect when the extrusion roller extrudes.

Thirdly, the scraper used in the battery diaphragm coating device is mainly vertically arranged above the battery diaphragm to scrape the battery diaphragm, so that the heights of coating raw materials on the battery diaphragm are kept consistent, along with long-time scraping of the scraper, scraped raw materials are accumulated at the scraper, and after excessive accumulation, the scraper is easy to directly pass through the battery diaphragm during scraping, so that the heights of the battery diaphragms are inconsistent.

In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model solves the problems that the coating range of a coating device in the traditional technology is fixed and the coating device can not be adjusted and used according to battery films with different widths; along with long-time scraping of the scraper, scraped raw materials are accumulated at the scraper continuously, and the uniformity of the smearing thickness of the battery membrane is affected.

In order to solve the problems, the utility model provides the following technical scheme:

the battery film coating device comprises a box body, wherein a coating mechanism, an extrusion mechanism and a scraping mechanism are sequentially arranged in the box body along the feeding direction of a battery film; the coating mechanism comprises a coating roller which is rotationally arranged, one side of the coating roller is provided with a coating shell, the coating shell is provided with a discharge hole facing the coating roller, opposite side plates in the coating shell are arranged in a sliding way in opposite directions and opposite directions through an adjusting piece, the width of the discharge hole is adjusted,

the extrusion mechanism comprises two extrusion rollers which are arranged side by side from top to bottom, a fixed plate is horizontally fixedly connected to one side of the inlet of each extrusion roller, a compression roller in friction contact with the upper surface of each fixed plate is horizontally arranged above each fixed plate in a sliding manner, and the compression rollers are arranged along the axis of each extrusion roller in a sliding manner.

As an optimized scheme, the scraping mechanism comprises an adsorption cavity shell, a collection shell is arranged above the adsorption cavity shell, a feed inlet is formed in the end wall of the collection shell, a scraper is obliquely fixedly connected in the feed inlet, and a feed channel which is communicated with the adsorption cavity shell is arranged between the upper end part of the scraper and the inner top surface of the collection shell.

As an optimized scheme, a discharge hole communicated with the inner cavity of the collecting cavity shell is formed in the side wall of the collecting cavity shell, and a pushing plate is slidably arranged in the collecting cavity shell.

As an optimized scheme, a screw rod is horizontally arranged in the collecting cavity shell in a rotating mode, the screw rod is in threaded connection with the pushing plate, and a first motor for driving the screw rod to rotate is fixedly connected on the outer wall of the collecting cavity shell, which is opposite to the discharge hole.

As an optimized scheme, the second motor is vertically fixedly connected to the inner top surface of the box body, the rotating plate is rotationally arranged on the output shaft of the second motor, the swinging plate which swings horizontally is hinged to the inner top surface of the box body through the rotating rod, the outer end portion of the rotating plate is hinged to one end of the swinging plate, the sliding hole is formed in the rotating plate, the pressing roller is rotationally arranged on the connecting frame, and the sliding column which is restrained in the sliding hole is fixedly connected to the connecting frame.

As an optimized scheme, two guide rails are fixedly connected between the opposite side walls of the box body in parallel, and two ends of the connecting frame are slidably arranged on the guide rails.

As an optimized scheme, the regulating piece comprises two limit posts which are horizontally arranged on opposite side walls of the box in parallel in a sliding mode, the inner ends of the limit posts are fixedly connected with the side plates of the coating shell, compression springs are sleeved on the limit posts, two ends of each compression spring respectively abut against the side plates and the inner walls of the box, conical sliding blocks are arranged on the ends, opposite to the discharge holes, of the box in a sliding mode, and guide blocks which abut against the conical sliding blocks in a friction mode are fixedly connected on the opposite inner walls of the sliding plates.

As an optimized scheme, the upper end part of the collecting shell is provided with two first limit bolts in parallel rotation, the upper end parts of the two first limit bolts penetrate through the box body and are fixedly connected with a knob, and the first limit bolts are in threaded connection with the upper end part of the box body.

As an optimized scheme, the back of the conical sliding block is rotatably provided with a second limit bolt which is horizontally arranged, the other end of the second limit bolt penetrates through the box body and is fixedly connected with a knob, and the second limit bolt is in threaded connection with the side wall of the box body.

As an optimized scheme, the lower end part of the adsorption cavity shell is fixedly connected with a waste material box, and the upper end part of the waste material box is provided with a blanking hole positioned below the discharge hole.

As an optimized scheme, one end of the waste box is pulled with a waste collection drawer.

As an optimized scheme, a battery film outlet and a battery film inlet are formed in parallel from top to bottom on one side wall of the box body, and guide rollers are respectively and horizontally arranged in the box body in a rotating manner corresponding to the battery film outlet and the battery film inlet.

As an optimized scheme, the inner bottom surface of the coating shell is fixedly connected with a raw material pipe communicated with the inner cavity of the coating shell, and the lower end part of the raw material pipe is connected with a raw material box.

As an optimized scheme, a vacuum negative pressure machine is fixedly connected to the outer portion of the box body, the vacuum negative pressure machine is connected with an inner cavity of the coating roller through a first air pipe, adsorption holes are uniformly distributed in the peripheral wall of the coating roller, the first air pipe is connected with the adsorption cavity shell through a second air pipe, and adsorption holes are uniformly distributed on the upper surface of the adsorption cavity shell.

As an optimized scheme, a round hole is formed in one end of the coating roller, the outlet end of the first air pipe is rotatably arranged in the round hole, and a sealing ring is arranged between the outer wall of the first air pipe and the inner wall of the round hole.

Compared with the prior art, the utility model has the beneficial effects that:

the coating roller is connected with the vacuum negative pressure machine through a first air pipe, an adsorption hole is formed in the surface of the coating roller, a raw material box is connected with the coating shell through a material pipe, when the battery membrane is coated, the vacuum negative pressure machine is started, the battery membrane bypasses the coating roller, the adsorption hole on the coating roller adsorbs the battery membrane, raw materials in the raw material box enter the coating shell through the material pipe, a discharge hole of the coating shell coats the battery membrane, when the battery membranes with different sizes are replaced, a second limit bolt is rotated, the bolt drives a conical sliding block to move towards the discharge hole, a guide block moves towards each other under the action of a compression spring, the two side plates are driven to move relatively, the distance between the two side plates is reduced, the width of the discharge hole is reduced, the function of enhancing the stability of the coating roller to the battery membrane and the practicability of the coating component is improved;

when the raw materials on the battery membrane are uniformly coated, the second motor is started, the motor drives the rotary plate to rotate, the rotary plate drives the swinging plate to swing, and the swinging plate drives the sliding column and the connecting frame to horizontally slide along the guide rail so as to drive the compression roller to reciprocate, the compression roller horizontally slides to uniformly coat the raw materials on the surface of the battery membrane, the uniformity degree of the raw materials on the surface of the battery membrane is improved, and the extrusion effect of the extrusion roller is improved;

the scraper below is equipped with the absorption chamber shell, and absorption chamber shell surface is equipped with the absorption hole, and absorption chamber shell is connected with the second trachea, and when the scraper was scraped the battery diaphragm, the waste material of scraping entered into the collection chamber shell along the feed channel through the scraper inclined plane, after collecting the accumulation certain waste material in the chamber shell, started first motor, and first motor drives the lead screw and rotates, and the lead screw drives the flitch and remove in collecting the chamber shell, will collect the waste material in the chamber shell and push into the waste bin along the bin outlet, then through pulling out the garbage collection drawer, realized improving the scraping effect of scraper to the battery diaphragm, make things convenient for garbage collection's function.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the coating housing of the present utility model;

FIG. 3 is a schematic structural view of a pusher plate according to the present utility model;

fig. 4 is a schematic structural view of the swing plate of the present utility model.

In the figure: 1-a box body; 2-cell membrane; 3-cell membrane outlet; 4-cell membrane inlet; 5-a guide roller; 6-a raw material box; 7-a raw material pipe; 8-vacuum negative pressure machine; 9-a first conduit; 10-a second conduit; 11-a coating mechanism; 12-an extrusion mechanism; 13-scraping mechanism; 14-a first limit bolt; 15-a second limit bolt; 16-a discharge hole; 17-side plates; 18-limiting columns; 19-compressing a spring; 20-a conical slider; 21-a guide block; 22-coating roller; 23-fixing plates; 24-squeeze rolls; 25-a press roll; 26-a second motor; 27-rotating plate; 28-swinging plate; 29-a connecting frame; 30-rotating the rod; 31-a guide rail; 32-adsorbing a cavity shell; 33-a collection chamber housing; 34-scraping plate; 35-a discharge port; 36-waste bin; 37-a waste collection drawer; 38-pushing plate; 39-lead screw.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

As shown in fig. 1 to 4, the battery film coating device comprises a box body 1, wherein a coating mechanism 11, an extrusion mechanism 12 and a scraping mechanism 13 are sequentially arranged in the box body 1 along the feeding direction of a battery film 2; the coating mechanism 11 comprises a coating roller 22 which is rotatably arranged, one side of the coating roller 22 is provided with a coating shell, the coating shell is provided with a discharge hole 16 facing the coating roller 22, opposite side plates 17 in the coating shell are arranged in a sliding way in opposite directions through adjusting pieces, the width of the discharge hole 16 is adjusted,

the extrusion mechanism 12 comprises two extrusion rollers 24 which are arranged side by side from top to bottom, one side of the two extrusion rollers 24 at the inlet is horizontally fixedly connected with a fixed plate 23, a compression roller 25 which is in friction contact with the upper surface of the fixed plate 23 is horizontally arranged above the fixed plate in a sliding manner, and the compression roller 25 is arranged along the axis of the extrusion rollers 24 in a sliding manner.

The scraping mechanism 13 comprises an adsorption cavity shell 32, a collecting shell is arranged above the adsorption cavity shell 32, a feeding hole is formed in the end wall of the collecting shell, a scraper 34 is fixedly connected in the feeding hole in an inclined mode, and a feeding channel which is communicated with the adsorption cavity shell 32 is arranged between the upper end portion of the scraper 34 and the inner top surface of the collecting shell.

The side wall of the collecting cavity shell 33 is provided with a discharge hole 35 communicated with the inner cavity of the collecting cavity shell, and a pushing plate 38 is arranged in the collecting cavity shell 33 in a sliding manner.

A screw rod 39 is horizontally arranged in the collecting cavity shell 33 in a rotating way, the screw rod 39 is in threaded connection with the pushing plate 38, and a first motor for driving the screw rod 39 to rotate is fixedly connected on the outer wall of the collecting cavity shell 33 opposite to the discharge hole 35.

The vertical rigid coupling of interior top surface of box 1 has second motor 26, and the output shaft rotation of second motor 26 is equipped with rotor plate 27, and the interior top surface of box 1 articulates through rotary rod 30 has horizontal wobbling swinging plate 28, and the outer tip of rotor plate 27 articulates with the one end of swinging plate 28 mutually, has seted up the slide hole on the rotor plate 27, and compression roller 25 rotates to be installed on link 29, and the rigid coupling has the slip post that restraines in the slide hole on the link 29.

Two guide rails 31 are fixedly connected between the opposite side walls of the box body 1 in parallel, and two ends of the connecting frame 29 are arranged on the guide rails 31 in a sliding manner.

The regulating part comprises two limit posts 18 which are horizontally arranged on opposite side walls of the box body 1 in parallel in a sliding manner, the inner ends of the limit posts 18 are fixedly connected with side plates 17 of the coating shell, compression springs 19 are sleeved on the limit posts 18, two ends of each compression spring 19 respectively abut against the side plates 17 and the inner walls of the box body 1, conical sliding blocks 20 are slidably arranged on the ends, opposite to the discharge holes 16, of the box body 1, and guide blocks 21 which abut against the conical sliding blocks 20 in a friction manner are fixedly connected on the opposite inner walls of the sliding plates.

The upper end of the collecting shell is provided with two first limit bolts 14 in parallel rotation, the upper ends of the two first limit bolts 14 penetrate through the box body 1 and are fixedly connected with a knob, and the first limit bolts 14 are in threaded connection with the upper end of the box body 1.

The back of the conical slide block 20 is rotatably provided with a second limit bolt 15 which is horizontally arranged, the other end of the second limit bolt 15 penetrates through the box body 1 and is fixedly connected with a knob, and the second limit bolt 15 is in threaded connection with the side wall of the box body 1.

The lower end part of the adsorption cavity shell 32 is fixedly connected with a waste box 36, and the upper end part of the waste box 36 is provided with a blanking hole positioned below the discharge hole 35.

One end of the waste bin 36 is pulled to form a waste collection drawer 37, and a hole body avoiding the waste collection drawer 37 is formed in the bin body 1.

A battery film outlet 3 and a battery film inlet 4 are arranged on one side wall of the box body 1 from top to bottom in parallel, and guide rollers 5 are respectively and horizontally arranged in the box body 1 in a rotating manner corresponding to the battery film outlet 3 and the battery film inlet 4.

The inner bottom surface of the coating shell is fixedly connected with a raw material pipe 7 communicated with the inner cavity of the coating shell, the lower end part of the raw material pipe 7 is connected with a raw material box 6, and the structure and the feeding mode of the raw material box 6 are common in daily life and are not innovated in the scheme, so that the details are not repeated here.

The outside rigid coupling of box 1 has vacuum negative pressure machine 8, and vacuum negative pressure machine 8 passes through the inner chamber of first trachea 9 connection coating roller 22, and the equipartition has the absorption hole on the coating roller 22 week wall, connects absorption chamber shell 32 through second trachea 10 on the first trachea 9, and the upper surface equipartition of absorption chamber shell 32 has the absorption hole.

A round hole is formed in one end of the coating roller 22, the outlet end of the first air pipe 9 is rotatably arranged in the round hole, and a sealing ring is arranged between the outer wall of the first air pipe 9 and the inner wall of the round hole.

The working principle of the device is as follows:

the coating roller 22 is connected with the vacuum negative press 8 through the first air pipe 9, the surface of the coating roller 22 is provided with adsorption holes, the raw material box 6 is connected with the coating shell through a material pipe, when the battery film 2 sheets are coated, the vacuum negative press 8 is started, the battery film 2 sheets bypass the coating roller 22, the adsorption holes on the coating roller 22 adsorb the battery film 2 sheets, raw materials in the raw material box 6 enter the coating shell through the material pipe, the discharge hole 16 of the coating shell coats the battery film 2 sheets, when the battery film 2 sheets with different sizes are replaced, the second limit bolt 15 is rotated, the conical slide block 20 is driven by the bolt to move towards the discharge hole 16, the guide block 21 moves towards each other under the action of the compression spring 19 to drive the two side plates 17 to move relatively, the distance between the two side plates 17 is reduced, the width of the discharge hole 16 is reduced, the function of enhancing the stability of the coating roller 22 on the battery film 2 sheets and the practicability of the coating assembly is improved;

when the raw materials on the battery film 2 sheets are uniformly coated, the second motor 26 is started, the motor drives the rotating plate 27 to rotate, the rotating plate 27 drives the swinging plate 28 to swing, the swinging plate 28 drives the sliding column and the connecting frame 29 to horizontally slide along the guide rail 31 so as to drive the pressing roller 25 to reciprocate, the pressing roller 25 horizontally slides to uniformly coat the raw materials on the surface of the battery film 2 sheets, the uniformity of the raw materials on the surface of the battery film 2 is improved, and the extrusion effect of the extrusion roller 24 is improved;

the scraper 34 below is equipped with and adsorbs chamber shell 32, adsorb chamber shell 32 surface and be equipped with the absorption hole, adsorb chamber shell 32 and second trachea 10 and be connected, when scraper 34 scrapes battery film 2 piece, the waste material of scraping enters into collection chamber shell 33 through scraper 34 inclined plane along the feed channel, after certain waste material of accumulation in the collection chamber shell 33, start first motor, first motor drives lead screw 39 rotation, lead screw 39 drives and pushes away flitch 38 and remove in collection chamber shell 33, will collect the waste material in the chamber shell 33 and push into waste box 36 along bin outlet 35, then through pulling out waste collection drawer 37, the realization improves the scraping effect of scraper 34 to battery film 2 piece, make things convenient for the function of waste collection.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims (10)

1. Battery membrane coating device, its characterized in that: the battery film scraping device comprises a box body (1), wherein a coating mechanism (11), an extrusion mechanism (12) and a scraping mechanism (13) are sequentially arranged in the box body (1) along the feeding direction of the battery film (2); the coating mechanism (11) comprises a coating roller (22) which is rotatably arranged, one side of the coating roller (22) is provided with a coating shell, the coating shell is provided with a discharge hole (16) which faces the coating roller (22), opposite side plates (17) in the coating shell are arranged in a sliding way in opposite directions and opposite directions through an adjusting piece, the width of the discharge hole (16) is adjusted,

the extrusion mechanism (12) comprises two extrusion rollers (24) which are arranged side by side from top to bottom, a fixed plate (23) is horizontally fixedly connected to one side of the inlet of each extrusion roller (24), a compression roller (25) in friction contact with the upper surface of each fixed plate (23) is horizontally arranged above each fixed plate in a sliding manner, and the compression rollers (25) are arranged along the axis of each extrusion roller (24) in a sliding manner.

2. The battery film coating apparatus according to claim 1, wherein: the scraping mechanism (13) comprises an adsorption cavity shell (32), a collection shell is arranged above the adsorption cavity shell (32), a feed inlet is formed in the end wall of the collection shell, a scraper (34) is obliquely fixedly connected in the feed inlet, and a feed channel which is communicated with the adsorption cavity shell (32) is arranged between the upper end part of the scraper (34) and the inner top surface of the collection shell.

3. The battery film coating apparatus according to claim 2, wherein: a discharge hole (35) communicated with the inner cavity of the collecting cavity shell (33) is formed in the side wall of the collecting cavity shell (33), and a pushing plate (38) is arranged in the collecting cavity shell (33) in a sliding mode.

4. The battery film coating apparatus according to claim 3, wherein: the collecting cavity shell (33) is internally and horizontally rotated to be provided with a screw rod (39), the screw rod (39) is in threaded connection with the pushing plate (38), and a first motor for driving the screw rod (39) to rotate is fixedly connected on the outer wall of the collecting cavity shell (33) opposite to the discharging port (35).

5. The battery film coating apparatus according to claim 4, wherein: the vertical rigid coupling of interior top surface of box (1) has second motor (26), the output shaft rotation of second motor (26) is equipped with rotor plate (27), the interior top surface of box (1) articulates through rotary rod (30) has horizontal wobbling swing board (28), the outer tip of rotor plate (27) with the one end of swing board (28) articulates mutually, the slide opening has been seted up on rotor plate (27), compression roller (25) rotate install on link (29), the rigid coupling have the restriction in slide column in the slide opening on link (29).

6. The battery film coating apparatus according to claim 5, wherein: the regulating piece comprises two limit posts (18) which are horizontally arranged on opposite side walls of the box body (1) in parallel in a sliding mode, the inner end portions of the limit posts (18) are fixedly connected with side plates (17) of the coating shell, compression springs (19) are sleeved on the limit posts (18), two ends of each compression spring (19) are respectively abutted against the side plates (17) and the inner wall of the box body (1), conical sliding blocks (20) are arranged on the end portions, opposite to the discharge holes (16), of the box body (1), and guide blocks (21) which are in friction and offset with the conical sliding blocks (20) are fixedly connected on the opposite inner walls of the sliding plates.

7. The battery film coating apparatus according to claim 6, wherein: the upper end of the collecting shell is provided with two first limit bolts (14) in parallel rotation, the upper ends of the two first limit bolts (14) penetrate through the box body (1) and are fixedly connected with a knob, and the first limit bolts (14) are in threaded connection with the upper end of the box body (1).

8. The battery film coating apparatus according to claim 7, wherein: the back rotation of toper slider (20) is equipped with second limit bolt (15) that the level set up, the other end of second limit bolt (15) is passed box (1) and fixedly connected with knob, second limit bolt (15) with lateral wall threaded connection of box (1).

9. The battery film coating apparatus according to claim 8, wherein: the lower end part of the adsorption cavity shell (32) is fixedly connected with a waste material box (36), and the upper end part of the waste material box (36) is provided with a blanking hole positioned below the discharge hole (35).

10. The battery film coating apparatus according to claim 9, wherein: the vacuum negative pressure machine (8) is fixedly connected to the outside of the box body (1), the vacuum negative pressure machine (8) is connected with an inner cavity of the coating roller (22) through a first air pipe (9), adsorption holes are uniformly distributed on the peripheral wall of the coating roller (22), the first air pipe (9) is connected with the adsorption cavity shell (32) through a second air pipe (10), and adsorption holes are uniformly distributed on the upper surface of the adsorption cavity shell (32).