CN117225614B - Alumina powder rubber coating device for lithium cell diaphragm - Google Patents

Abstract

The invention relates to the technical field of surface spraying, and discloses an alumina powder gluing device for a lithium battery diaphragm, which comprises a chassis. According to the invention, when the ejection tooling outputs upwards, the ejection tooling synchronously drives the pressing group to displace downwards, so that the pressing group acts on the laminated film to enable the laminated film to be tightly combined with the diaphragm, so that when the ultrasonic spraying device sprays the surface of the diaphragm, alumina powder which is outwards diffused falls on the laminated film during spraying the edge of the diaphragm, the boundary of the area on the diaphragm, on which the alumina powder is sprayed, is clear, the boundary of the effective area is locked when the leftover material of the diaphragm is cut, and when spraying is performed, the ultrasonic spraying device can be fully moved outwards, so that the thickness of the coating at the edge is consistent with the thickness of the coating at the middle part, and excessive alumina powder is sprayed on the laminated film by utilizing the shielding of the laminated film, so that the alumina powder is prevented from being sprayed on equipment and being inconvenient to clean.

Description

Alumina powder rubber coating device for lithium cell diaphragm

Technical Field

The invention relates to the technical field of surface spraying, in particular to an alumina powder gluing device for a lithium battery diaphragm.

Background

A lithium battery separator is a thin film material for a lithium ion battery, mainly used for isolating an anode and a cathode to prevent a short circuit and allowing lithium ions to be transported in an electrolyte. The separator is typically positioned between the positive and negative electrodes, functioning as a transport channel for electrolyte ions and preventing internal short circuits of the battery. Common lithium battery separator materials mainly comprise a polypropylene film (PP film), a polyimide film (PI film) and the like. The materials can meet the requirements of a diaphragm in lithium battery application, and have good electrochemical performance and thermal stability. With the development of lithium batteries, the energy density of the lithium ion batteries is improved year by year, the amount of inactive characteristics is smaller and smaller, the diaphragm is thinner and thinner, and the requirements on the performance, particularly the safety performance, of the diaphragm are higher and higher, so that great challenges are brought to the safety of the lithium ion batteries, and the diaphragm coating technology becomes an effective mode for greatly improving the safety performance of the diaphragm.

The ceramic coating obviously improves the liquid absorption and the liquid retention of the diaphragm, thus showing good cycle performance, the alumina ceramic coating provides a framework for the flexible diaphragm, improves the wear resistance of the diaphragm, prevents the penetration of lithium dendrites, reduces heat shrinkage, improves the temperature resistance, ensures that the pore is stable along with the change of temperature, and can effectively improve the safety performance of the battery.

The membrane of button cell is characterized in that the required area of the membrane is smaller, the membrane is round, the larger square membrane is cut to form the membrane of button cell, when the membrane is sprayed on the surface, the membrane is sprayed with alumina powder sprayed by ultrasonic waves, the boundary of the membrane is turned from outside to inside, the thickness of the coating is gradually increased, when the leftover materials of the membrane are cut, the boundary of the effective area of the membrane cannot be accurately locked, the thickness of the coating at the edge of the membrane is different from the thickness of the middle coating in the membrane after the leftover materials are cut, the coating of the membrane is unevenly distributed, and the performance of the membrane is affected.

For the problems in the related art, no effective solution has been proposed at present.

Disclosure of Invention

In order to solve the technical problems that the boundary of the effective area of the diaphragm cannot be accurately locked, and the thickness of the coating at the edge of the diaphragm is different from that of the middle coating after the leftover materials are cut, so that the coating of the diaphragm is unevenly distributed and the performance of the diaphragm is affected, the invention provides the following technical scheme:

the utility model provides an alumina powder rubber coating device for lithium cell diaphragm, includes the quick-witted case, the fixed mounting plate that is provided with in middle part of machine case, be provided with spraying on the mounting plate and shelter from frock and drive assembly, spraying is sheltered from frock and is used for driving the tectorial membrane displacement, drive assembly is connected with vice motion frock, just vice motion frock fixed mounting is on the diaphragm carrier plate, in addition still be provided with ejecting frock and locking frock on the mounting plate, and both direction of motion are mutually perpendicular, ejecting frock initial state has elasticity, locking frock with ejecting frock looks joint is in order to keep ejecting frock's elasticity, ejecting frock's one end is connected with presses the group, just press the direction of motion of group with ejecting frock is opposite;

after the driving assembly slides a set distance relative to the auxiliary moving tool, the driving assembly drives the auxiliary moving tool to move, so that the diaphragm bearing plate is driven to move to a set position, and meanwhile, the diaphragm bearing plate drives the locking tool to move to release the clamping connection of the locking tool and the ejection tool, so that the ejection tool drives the diaphragm bearing plate to move upwards to the set position, and meanwhile, the pressing assembly is driven to press the laminating film driven by the spraying shielding tool to be attached to the diaphragm on the diaphragm bearing plate by utilizing the upward movement of the ejection tool.

Preferably, the spraying shielding tool comprises a release roller and a winding roller which are respectively fixed at two ends of the lower surface of the mounting plate, wherein the release roller and the winding roller are respectively used for releasing and winding the laminated film, one end of the winding roller is fixedly provided with a driving motor, and two ends of the mounting plate are respectively provided with a leading-out groove and a leading-in groove for guiding the movement of the laminated film.

Preferably, the driving assembly comprises a first sliding rail, the first sliding rail is fixedly installed on the chassis, an electric sliding block is slidably installed on the first sliding rail, a U-shaped frame is fixedly installed on the electric sliding block, and a driving column is fixedly installed on the U-shaped frame.

Preferably, the auxiliary movement tool comprises a connecting block, a through groove is formed in the connecting block, the driving column is always tangent to the through groove, the through groove comprises two planes perpendicular to each other and an arc surface, and two ends of the arc surface are intersected with one ends of the two planes respectively.

Preferably, the diaphragm bearing plate comprises a plate body and bearing seats, wherein the bearing seats are arranged at two ends of the lower surface of the plate body, and each bearing seat corresponds to one ejection tool and one locking tool;

the X-axis guide rail is fixedly arranged on the chassis, the X-axis guide rail is slidably matched with the X-axis guide block, the X-axis guide block is fixedly arranged with the Y-axis guide block, the Y-axis guide block is slidably matched with the Y-axis guide rail, and the Y-axis guide rail is fixedly arranged on the plate body.

Preferably, the ejection tooling comprises an ejection column, the ejection column penetrates through and is slidably mounted with the ejection column, the ejection column is fixedly mounted on the suspension beam, the suspension beam is fixedly mounted on the mounting plate, a spring plate is fixedly mounted in the middle of the ejection column, an ejection spring is fixedly mounted on the lower surface of the spring plate, the ejection spring and the ejection column are coaxial, and one end of the ejection spring is fixedly mounted on the inner wall of the ejection column.

Preferably, the locking tool comprises a limiting plate, the limiting plate is in contact with the upper surface of the ejection column so as to limit the position of the ejection column, a guide rod is fixedly installed on one side of the limiting plate, the guide rod penetrates through and is in sliding fit with the installation carrier plate, a reset spring is coaxially arranged on the guide rod, and two ends of the reset spring are fixedly installed on the limiting plate and the installation carrier plate respectively.

Preferably, the pressing group comprises a pressing block, a driving plate is fixedly installed on the pressing block through a connecting column, a driven rack is fixedly installed on one side of the driving plate, a transfer gear is meshed with the driven rack, the transfer gear is rotatably installed on the hanging beam through a hanging plate, a driving rack is meshed with the transfer gear, and the driving rack is fixedly installed at one end of the ejection column through a mounting seat.

Preferably, the suspension beam is further provided with a clamping component, the clamping component comprises a first clamping block fixedly installed on the X-axis guide block, the suspension beam penetrates through and is in sliding fit with a clamping column, the top end of the clamping column is fixedly provided with a second clamping block matched with the first clamping block, the lower surface of the second clamping block is fixedly provided with one end of a clamping spring, the other end of the clamping spring is fixedly installed on the suspension beam, and the clamping spring and the clamping column are coaxially arranged.

Compared with the prior art, the invention provides the alumina powder gluing device for the lithium battery diaphragm, which has the following beneficial effects:

according to the invention, in the process that the diaphragm bearing plate moves to correspond to the spraying shielding tool, the diaphragm bearing plate is clamped with the locking tool for at least a period of time, then the diaphragm bearing plate extrudes the locking tool to separate from the ejection tool, the elastic force of the ejection tool acts on the diaphragm bearing plate, so that the ejection tool outputs upwards to push the diaphragm bearing plate upwards, the diaphragm on the diaphragm bearing plate is contacted with the coating film driven by the spraying shielding tool, meanwhile, when the ejection tool outputs upwards, the ejection tool synchronously drives the pressing group to displace downwards, so that the pressing group acts on the coating film, the coating sub-film is tightly combined with the diaphragm, so that when the ultrasonic spraying device sprays the edge of the diaphragm, the outwards diffused alumina powder falls on the coating film, the boundary of the area where the alumina powder is sprayed on the diaphragm is relatively bright, the edge of the diaphragm piece is favorable for locking the boundary of the effective area when the rim material is cut, and when the ultrasonic wave is performed, the spraying device moves outwards, so that the thickness of the coating layer at the middle part is fully moved to cover the thickness of the coating layer, and the excessive spraying thickness of the coating layer is not consistent with the coating film is avoided, and the excessive spraying thickness of the coating film is not cleaned on the coating film is avoided.

Drawings

FIG. 1 is a schematic representation of the positioning structure of a mounting plate on a chassis according to the present invention;

FIG. 2 is a diagram showing the position and structure of a diaphragm carrier plate according to the present invention;

FIG. 3 is a diagram showing the cooperation of the driving assembly and the auxiliary movement tool of the present invention;

FIG. 4 is a block diagram of a pressing group of the present invention;

FIG. 5 is a diagram showing one of the bottom construction of the mounting carrier plate of the present invention;

FIG. 6 is a second block diagram of the bottom of the mounting carrier of the present invention;

FIG. 7 is a schematic cross-sectional view of an ejection tooling of the present invention;

fig. 8 is an enlarged view of fig. 5 a in accordance with the present invention.

In the figure: 1. a chassis; 2. mounting a loading plate; 3. spraying shielding tools; 301. a release roller; 302. a wind-up roll; 303. a drive motor; 4. a drive assembly; 401. a first slide rail; 402. an electric slide block; 403. a U-shaped frame; 404. a drive column; 5. an auxiliary movement tool; 501. a connecting block; 502. a through groove; 6. a diaphragm carrying plate; 601. a plate body; 602. a pressure-bearing seat; 603. an X-axis guide rail; 604. an X-axis guide block; 605. a Y-axis guide block; 606. a Y-axis guide rail; 7. ejecting a tool; 701. an ejection column; 702. an ejection column; 703. a suspension beam; 704. a spring plate; 705. an ejector spring; 8. locking the tool; 801. a limiting plate; 802. a guide rod; 803. a return spring; 9. a pressing group; 901. pressing the square frame; 902. a connecting column; 903. a driving plate; 904. a driven rack; 905. a transfer gear; 906. a hanging plate; 907. a driving rack; 908. a mounting base; 10. a clamping assembly; 1001. a first clamping block; 1002. a clamping column; 1003. a second clamping block; 1004. and a clamping spring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As described in the background art, the prior art has the defects, and in order to solve the technical problems, the application provides an alumina powder gluing device for a lithium battery diaphragm.

Referring to fig. 1-8, an alumina powder gluing device for a lithium battery diaphragm comprises a chassis 1, wherein an installation loading plate 2 is fixedly arranged in the middle of the chassis 1, a spraying shielding tool 3 and a driving assembly 4 are arranged on the installation loading plate 2, the spraying shielding tool 3 is used for driving a film covering displacement, the driving assembly 4 is connected with a secondary motion tool 5, the secondary motion tool 5 is fixedly arranged on a diaphragm bearing plate 6, in addition, an ejection tool 7 and a locking tool 8 are also arranged on the installation loading plate 2, the movement directions of the ejection tool 7 are perpendicular, the ejection tool 7 has elastic force in an initial state, the locking tool 8 is clamped with the ejection tool 7 to keep the elastic force of the ejection tool 7, one end of the ejection tool 7 is connected with a pressing group 9, and the movement direction of the pressing group 9 is opposite to the movement direction of the ejection tool 7;

after the driving component 4 slides a set distance relative to the auxiliary moving tool 5, the driving component drives the auxiliary moving tool 5 to displace so as to drive the diaphragm bearing plate 6 to move to a set position, and simultaneously, the diaphragm bearing plate 6 drives the locking tool 8 to move to release the clamping connection between the locking tool 8 and the ejection tool 7, so that the ejection tool 7 drives the diaphragm bearing plate 6 to move upwards to the set position, and simultaneously, the pressing group 9 is driven to press the lamination film driven by the spraying shielding tool 3 to be attached to the diaphragm on the diaphragm bearing plate 6 by utilizing the upward movement of the ejection tool 7.

The invention also comprises an ultrasonic spraying device which is positioned at the top of the inner part of the chassis 1 and can move along the X axis, the Y axis and the Z axis so as to enable the ultrasonic spraying device to displace above the diaphragm and spray the diaphragm, which is not specifically described in the prior art, and in the process of spraying the diaphragm, firstly, the lithium battery diaphragm is placed on the diaphragm bearing plate 6, and then the driving component 4 is operated so as to displace until the lithium battery diaphragm is in conflict with the auxiliary movement tool 5, and then the driving component 4 drives the auxiliary movement tool 5 to displace along with the continued displacement of the driving component 4, and because the auxiliary movement tool 5 is fixedly arranged on the diaphragm bearing plate 6, the diaphragm bearing plate 6 is synchronously driven to displace when the auxiliary movement tool 5 displaces, and when the diaphragm bearing plate 6 moves to correspond to the spraying shielding tool 3, the driving component 4 stops moving;

and because when the diaphragm bearing plate 6 does not correspond to the spraying shielding tool 3, the locking tool 8 is clamped with the ejection tool 7 so as to maintain the elasticity of the ejection tool 7, and the diaphragm bearing plate 6 is clamped with the locking tool 8 at the same time when moving to correspond to the spraying shielding tool 3, then the diaphragm bearing plate 6 extrudes the locking tool 8 to separate from the ejection tool 7, and the elasticity of the ejection tool 7 acts on the diaphragm bearing plate 6, so that the ejection tool 7 is output upwards, the diaphragm bearing plate 6 is pushed upwards, so that the diaphragm on the diaphragm bearing plate 6 is contacted with the covering film driven by the spraying shielding tool 3, and at the same time, when the ejection tool 7 is output upwards, the push-out tool 7 synchronously drives the pressing group 9 to move downwards, so that the pressing group 9 acts on the laminating film, the laminating film is tightly combined with the diaphragm, so that when the ultrasonic spraying device sprays the surface of the diaphragm, the outwards-diffused alumina powder falls on the laminating film when spraying the edge of the diaphragm, the boundary of the area on the diaphragm, on which the alumina powder is sprayed, is clear, the boundary of the effective area is locked when the leftover material of the diaphragm is cut, and when spraying, the ultrasonic spraying device can be fully moved outwards, so that the thickness of the coating at the edge is consistent with the thickness of the middle coating, and the excessive alumina powder is sprayed on the laminating film by utilizing the shielding of the laminating film, so that the alumina powder is prevented from being sprayed on equipment and inconvenient to clean.

Because ejecting frock 7 upwards outputs to make ejecting frock 7 drive diaphragm loading board 6 upwards move, again because vice kinematic frock 5 fixed mounting is on diaphragm loading board 6, consequently, diaphragm loading board 6 drives vice kinematic frock 5 upwards and moves, thereby make vice kinematic frock 5 slide along vertical direction relative drive assembly 4, when the spraying of next diaphragm is carried out to needs, drive assembly 4 displacement is in order to reset, drive assembly 4 extrudees vice kinematic frock 5, make vice kinematic frock 5 move down, thereby make diaphragm loading board 6 push ejecting frock 7 downwards, make ejecting frock 7 resume elasticity gradually, and when drive assembly 4 and vice kinematic frock 5 do not have relative displacement space in the horizontal direction, ejecting frock 7 accomplish the reset at this moment, then drive assembly 4 drives diaphragm loading board 6 through vice kinematic frock 5 and moves along with the horizontal direction, gradually break away from ejecting frock 7, and locking frock 8 resets along with the reset of diaphragm loading board 6 gradually, laminate with ejecting frock 7 again, in order to accomplish the joint to ejecting frock 7.

Further, for the spraying shielding tool 3, the spraying shielding tool 3 includes a release roller 301 and a wind-up roller 302 fixed at two ends of the lower surface of the mounting plate 2, where the release roller 301 and the wind-up roller 302 are used to release and wind up the laminated film, one end of the wind-up roller 302 is fixedly provided with a driving motor 303, and two ends of the mounting plate 2 are provided with an outgoing slot and an incoming slot, respectively, for guiding movement of the laminated film;

the release roller 301 is used for sleeving the laminated film, the wind-up roller 302 is used for winding the used laminated film, when the laminated film is used to a certain extent, the laminated film needs to be replaced, at this time, the wind-up roller 302 is driven to rotate by the driving motor 303, and as one end of the whole roll of laminated film is fixed on the wind-up roller 302, when the wind-up roller 302 rotates, the laminated film is driven to be gradually unreeled from the release roller 301 until the new laminated film corresponds to the spraying area of the diaphragm on the diaphragm bearing plate 6, so that the replacement of the laminated film is completed.

Further, for the driving assembly 4, the driving assembly 4 includes a first sliding rail 401, where the first sliding rail 401 is fixedly installed on the chassis 1, an electric slider 402 is slidably installed on the first sliding rail 401, a U-shaped frame 403 is fixedly installed on the electric slider 402, and a driving column 404 is fixedly installed on the U-shaped frame 403;

the auxiliary movement tool 5 comprises a connecting block 501, a through groove 502 is formed in the connecting block 501, the driving column 404 is always tangent to the through groove 502, the through groove 502 comprises two planes which are perpendicular to each other and an arc surface, and two ends of the arc surface are intersected with one ends of the two planes respectively;

the diaphragm bearing plate 6 comprises a plate body 601 and bearing seats 602, wherein the bearing seats 602 are arranged at two ends of the lower surface of the plate body 601, and each bearing seat 602 corresponds to one ejection tool 7 and one locking tool 8;

the device further comprises an X-axis guide rail 603, wherein the X-axis guide rail 603 is fixedly arranged on the chassis 1, the X-axis guide rail 603 is in sliding fit with an X-axis guide block 604, the X-axis guide block 604 is fixedly provided with a Y-axis guide block 605, the Y-axis guide block 605 is in sliding fit with a Y-axis guide rail 606, and the Y-axis guide rail 606 is fixedly arranged on the plate body 601;

after the diaphragm is placed on the plate body 601, the electric sliding block 402 is controlled to move on the first sliding rail 401, the U-shaped frame 403 is fixedly connected with the driving column 404, and the U-shaped frame 403 is fixed on the electric sliding block 402, so that the driving column 404 is driven to move;

as the plate body 601 moves, the plate body 601 drives the pressure-bearing seat 602 to move so as to be in contact with the locking tool 8, and as the pressure-bearing seat 602 continuously moves, partial areas exist below the pressure-bearing seat 602 and the locking tool 8 simultaneously and are attached to the ejection tool 7, and as the pressure-bearing seat 602 continuously moves, the locking tool 8 is withdrawn from being attached to the ejection tool 7, so that the locking tool 8 releases the restriction of the ejection tool 7 in the longitudinal direction, then the elastic force of the ejection tool 7 is released, the ejection tool 7 acts on the upward elastic force of the pressure-bearing seat 602, so that the ejection tool 7 drives the plate body 601 to move upwards under the action of the Y-axis guide rail 606 and the Y-axis guide block 605 through the pressure-bearing seat 602, and thus the diaphragm on the plate body 601 moves towards the laminating film;

because the plate body 601 moves upwards, the plate body 601 drives the connecting block 501 to move upwards, and the driving column 404 is static, so that the driving column 404 is positioned at the lower part of the through groove 502 at the moment, when the diaphragm is subjected to ultrasonic spraying, and the driving column 404 performs reset motion under the action of the electric sliding block 402 and the U-shaped frame 403, the driving column 404 applies extrusion force on the cambered surface of the through groove 502 in the horizontal direction due to the horizontal motion of the driving column 404, so that the through groove 502 receives component force in the horizontal direction and the vertical direction, and the horizontal and downward motion trends are generated;

because the hanging beam 703 is further provided with the clamping assembly 10, the clamping assembly 10 comprises a first clamping block 1001 fixedly installed on the X-axis guide block 604, the hanging beam 703 penetrates through and is in sliding fit with a clamping column 1002, the top end of the clamping column 1002 is fixedly provided with a second clamping block 1003 matched with the first clamping block 1001, the lower surface of the second clamping block 1003 is fixedly provided with one end of a clamping spring 1004, the other end of the clamping spring 1004 is fixedly installed on the hanging beam 703, and the clamping spring 1004 and the clamping column 1002 are coaxially arranged;

therefore, in the process that the plate body 601 moves to the position right below the laminating film, the plate body 601 drives the X-axis guide block 604 to synchronously translate through the Y-axis guide rail 606 and the Y-axis guide block 605, so that the first clamping block 1001 is contacted with the second clamping block 1003, and as the plate body 601 continues to move, the first clamping block 1001 extrudes the second clamping block 1003, so that the second clamping block 1003 slides downwards under the guide action of the clamping column 1002, and compresses the clamping spring 1004, so that the clamping spring 1004 has elasticity, and when the plate body 601 moves to the position right below the laminating film, the first clamping block 1001 just completely passes through the second clamping block 1003, so that the clamping spring 1004 is reset, and the first clamping block 1001 limits the second clamping block 1003 to be reset;

the through groove 502 moves downwards under the action of downward component force, so that the ejection tooling 7 is downwards output to an initial state, the driving column 404 at the moment also moves to the initial state on the through groove 502 along the cambered surface of the through groove 502, and then the driving column 404 pulls the connecting block 501 and the plate body 601 to move through the through groove 502, so that the pressure-bearing seat 602 is gradually separated from the ejection tooling 7, and the locking tooling 8 is attached to the ejection tooling 7 again, so that the locking tooling 8 finishes locking the ejection tooling 7;

the ejection tool 7 outputs downwards, and synchronously drives the pressing group 9 to move upwards, so that the pressing group 9 releases the pressing of the coating film, and the coating film is convenient to replace.

Further, for the above-mentioned ejection tooling 7 and locking tooling 8, the ejection tooling 7 includes an ejection column 701, the ejection column 701 penetrates and is slidably mounted with an ejection column 702, the ejection column 702 is fixedly mounted on a suspension beam 703, the suspension beam 703 is fixedly mounted on the mounting carrier plate 2, a spring plate 704 is fixedly mounted in the middle of the ejection column 701, an ejection spring 705 is fixedly mounted on the lower surface of the spring plate 704, the ejection spring 705 and the ejection column 701 are coaxial, and one end of the ejection spring 705 is fixedly mounted on the inner wall of the ejection column 702;

the locking tool 8 comprises a limiting plate 801, wherein the limiting plate 801 is contacted with the upper surface of the ejection column 701 to limit the position of the ejection column 701, a guide rod 802 is fixedly arranged on one side of the limiting plate 801, the guide rod 802 penetrates through and is in sliding fit with the mounting carrier plate 2, a reset spring 803 is coaxially arranged on the guide rod 802, and two ends of the reset spring 803 are fixedly arranged on the limiting plate 801 and the mounting carrier plate 2 respectively;

the pressure-bearing seat 602 is firstly attached to the side surface of the limiting plate 801 along with the movement of the plate body 601, and the pressure-bearing seat 602 extrudes the limiting plate 801 along with the continuous movement of the pressure-bearing seat 602, so that the limiting plate 801 synchronously displaces to compress the return spring 803, thereby gradually replacing the limiting plate 801 by the pressure-bearing seat 602 to lock the position of the ejection column 701, and when the pressure-bearing seat 602 is replaced, the ejection column 701 jacks up the pressure-bearing seat 602 and the plate body 601 under the action of the elastic force of the ejection spring 705, so that the ejection column 701 is output;

in the resetting process, the plate body 601 descends, so that the pressure-bearing seat 602 extrudes the ejection column 701, the ejection column 701 descends to compress the ejection spring 705 until the pressure-bearing seat 602 corresponds to the limiting plate 801, and the limiting plate 801 compresses when synchronously displacing under the action of the pressure-bearing seat 602, so that after the pressure-bearing seat 602 corresponds to the limiting plate 801, the limiting plate 801 gradually resets under the action of the limiting spring 803 along with the resetting of the pressure-bearing seat 602, and the position of the ejection column 701 is locked again.

Further, for the above-mentioned pressing group 9, the pressing group 9 includes a pressing block 901, the pressing block 901 is fixedly mounted with a driving plate 903 through a connecting column 902, one side of the driving plate 903 is fixedly mounted with a driven rack 904, the driven rack 904 is meshed with a transfer gear 905, the transfer gear 905 is rotatably mounted on the suspension beam 703 through a suspension plate 906, and the transfer gear 905 is meshed with a driving rack 907, and the driving rack 907 is fixedly mounted at one end of the ejection column 701 through a mounting seat 908;

when the ejection column 701 ascends, the ejection column 701 drives the driving rack 907 to move upwards through the mounting seat 908, and as the driving rack 907 is meshed with one side of the transfer gear 905, when the driving rack 907 moves upwards, the transfer gear 905 is driven to rotate, and the other side of the transfer gear 905 is meshed with the driven rack 904, so that the driven rack 904 is driven to move downwards by using the rotation of the transfer gear 905, and the pressing block 901 is driven to press down through the driving plate 903, so that the pressing block 901 is used for pressing and fixing the laminated film; similarly, the release of the pressing is completed when the reverse movement is performed.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and principles of the present invention.

Claims (6)

1. The utility model provides an alumina powder rubber coating device for lithium cell diaphragm, includes quick-witted case (1), the fixed loading board (2) that are provided with in middle part of machine case (1), its characterized in that: the novel spraying device is characterized in that a spraying shielding tool (3) and a driving assembly (4) are arranged on the mounting carrier plate (2), the spraying shielding tool (3) is used for driving the lamination displacement, the driving assembly (4) is connected with an auxiliary moving tool (5), the auxiliary moving tool (5) is fixedly arranged on the diaphragm bearing plate (6), an ejection tool (7) and a locking tool (8) are further arranged on the mounting carrier plate (2), the moving directions of the ejection tool (7) are perpendicular, the ejection tool (7) has elastic force in an initial state, the locking tool (8) is clamped with the ejection tool (7) to keep the elastic force of the ejection tool (7), one end of the ejection tool (7) is connected with a pressing group (9), and the moving direction of the pressing group (9) is opposite to that of the ejection tool (7);

after the driving assembly (4) slides a set distance relative to the auxiliary moving tool (5), the driving assembly drives the auxiliary moving tool (5) to displace so as to drive the diaphragm bearing plate (6) to move to a set position, and simultaneously, the diaphragm bearing plate (6) drives the locking tool (8) to move to release the clamping connection between the locking tool (8) and the ejection tool (7), so that the ejection tool (7) drives the diaphragm bearing plate (6) to move upwards to the set position, and simultaneously, the pressing group (9) is driven to press the laminating film driven by the spraying shielding tool (3) to be attached to the diaphragm on the diaphragm bearing plate (6) by utilizing the upward movement of the ejection tool (7);

the driving assembly (4) comprises a first sliding rail (401), the first sliding rail (401) is fixedly arranged on the chassis (1), an electric sliding block (402) is slidably arranged on the first sliding rail (401), a U-shaped frame (403) is fixedly arranged on the electric sliding block (402), and a driving column (404) is fixedly arranged on the U-shaped frame (403);

the auxiliary movement tool (5) comprises a connecting block (501), a through groove (502) is formed in the connecting block (501), the driving column (404) is always tangent to the through groove (502), the through groove (502) comprises two planes which are perpendicular to each other and an arc surface, and two ends of the arc surface are intersected with one ends of the two planes respectively;

the diaphragm bearing plate (6) comprises a plate body (601), bearing seats (602) and X-axis guide rails (603), wherein the bearing seats (602) are arranged at two ends of the lower surface of the plate body (601), and each bearing seat (602) corresponds to one ejection tool (7) and one locking tool (8);

the X-axis guide rail (603) is fixedly arranged on the chassis (1), the X-axis guide rail (603) is in sliding fit with an X-axis guide block (604), the X-axis guide block (604) is fixedly provided with a Y-axis guide block (605), the Y-axis guide block (605) is in sliding fit with a Y-axis guide rail (606), and the Y-axis guide rail (606) is fixedly arranged on the plate body (601).

2. The alumina powder gumming device for lithium battery separator according to claim 1, wherein: the spraying shielding tool (3) comprises a release roller (301) and a wind-up roller (302) which are respectively fixed at two ends of the lower surface of the mounting plate (2), the release roller (301) and the wind-up roller (302) are respectively used for releasing and winding the laminated film, one end of the wind-up roller (302) is fixedly provided with a driving motor (303), and two ends of the mounting plate (2) are respectively provided with a leading-out groove and a leading-in groove, so as to be used for guiding the movement of the laminated film.

3. The alumina powder gumming device for lithium battery separator according to claim 2, wherein: the ejection tooling (7) comprises an ejection column (701), wherein the ejection column (701) penetrates through and is slidably provided with an ejection column (702), the ejection column (702) is fixedly arranged on a suspension beam (703), the suspension beam (703) is fixedly arranged on the mounting carrier plate (2), a spring plate (704) is fixedly arranged in the middle of the ejection column (701), an ejection spring (705) is fixedly arranged on the lower surface of the spring plate (704), the ejection spring (705) and the ejection column (701) are coaxial, and one end of the ejection spring (705) is fixedly arranged on the inner wall of the ejection column (702).

4. The alumina powder gumming device for lithium battery separator according to claim 3, wherein: the locking tool (8) comprises a limiting plate (801), the limiting plate (801) is in contact with the upper surface of the ejection column (701) so as to limit the position of the ejection column (701), a guide rod (802) is fixedly installed on one side of the limiting plate (801), the guide rod (802) penetrates through and is in sliding fit with the installation carrier plate (2), a reset spring (803) is arranged on the coaxial center of the guide rod (802), and two ends of the reset spring (803) are fixedly installed on the limiting plate (801) and the installation carrier plate (2) respectively.

5. The alumina powder gumming device for lithium battery separator as set forth in claim 4, wherein: pressing group (9) is including pressing square frame (901), pressing square frame (901) has drive plate (903) through spliced pole (902) fixed mounting, one side fixed mounting of drive plate (903) has driven rack, driven rack meshing has transfer gear (905), transfer gear (905) are installed through hanging board (906) rotation on hanging beam (703), just transfer gear (905) meshing has initiative rack (907), initiative rack (907) are through mount pad (908) fixed mounting in the one end of ejecting post (701).

6. The alumina powder gumming device for lithium battery separator according to claim 5, wherein: still be provided with screens subassembly (10) on hanging roof beam (703), screens subassembly (10) are including fixed mounting first screens piece (1001) on X axle guide block (604), hanging roof beam (703) run through and sliding fit has screens post (1002), the top fixed mounting of screens post (1002) have with first screens piece (1001) assorted second screens piece (1003), the lower surface fixed mounting of second screens piece (1003) has the one end of screens spring (1004), the other end fixed mounting of screens spring (1004) is on hanging roof beam (703), just screens spring (1004) with screens post (1002) coaxial setting.