CN220948733U

CN220948733U - Correction film pasting device for battery cover plate

Info

Publication number: CN220948733U
Application number: CN202322598138.3U
Authority: CN
Inventors: 尹林超; 杨文旭; 李田强
Original assignee: Shenzhen Jiaruipu Technology Co ltd
Current assignee: Shenzhen Jiaruipu Technology Co ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2024-05-14
Anticipated expiration: 2033-09-25

Abstract

A correction film sticking device for a battery cover plate comprises a positioning mechanism, a conveyer belt provided with a film sticking station, a film feeding machine, a correction mechanism and a material moving mechanism; the conveying belt is used for conveying the battery cover plate, and the positioning mechanism can position the battery cover plate to the film pasting station; the film supplying machine is arranged beside the conveying belt and is used for supplying films; the deviation correcting mechanism is arranged between the film pasting station and the film supplying machine and can correct the deviation of the film supplied by the film supplying machine; the material moving mechanism is arranged at the film pasting station and can transfer the corrected film to a well-defined battery cover plate in the film pasting station, so that the film is attached to an explosion-proof valve of the battery cover plate; therefore, through the cooperation design of the deviation correcting mechanism and the material moving mechanism, the film pasting device has the function of correcting and positioning the film, ensures that the taken film can be accurately aligned with the explosion-proof valve of the battery cover plate, and effectively improves film pasting precision and finished product quality.

Description

Correction film pasting device for battery cover plate

Technical Field

The utility model belongs to the technical field of battery production, and particularly relates to a correction film sticking device for a battery cover plate.

Background

The battery cover plate is a core component of the new energy automobile battery, an explosion-proof valve is designed on the battery cover plate, and the explosion-proof valve can be automatically opened for pressure relief under the condition that the internal pressure of a battery cell is overlarge so as to avoid explosion of the battery; in the production process, a protective film is often attached to the surface of the explosion-proof valve after the electric performance of the cover plate is detected. To prevent dust from contaminating the explosion-proof valve.

In order to facilitate film pasting, the invention patent with the application number 2023106504538 mentions an electric performance detection film pasting device for a battery cover plate, wherein a film pasting part in the device consists of a finished product conveying belt, a film pasting positioning mechanism and a film pasting machine, the battery cover plate is conveyed to the film pasting positioning mechanism for positioning through the finished product conveying belt, and then the film pasting machine is used for pasting the explosion-proof piece of the battery cover plate, so that film pasting automation is realized.

However, in the actual use process, the film on the film sticking machine is torn and used immediately, and when the position of the provided film has deviation, the deviation correction cannot be timely carried out, so that the comparison between the film and the explosion-proof valve is not orderly, the film sticking precision is reduced, and the quality of the obtained finished product is poor.

Disclosure of utility model

(One) solving the technical problems

The utility model provides a correction film sticking device for a battery cover plate, which can correct and position a film so as to improve film sticking precision and finished product quality.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions:

A correction film sticking device for a battery cover plate comprises a positioning mechanism, a conveyer belt provided with a film sticking station, a film feeding machine, a correction mechanism and a material moving mechanism; the positioning mechanism can position the battery cover plate conveyed by the conveying belt to the film pasting station; the film feeding machine is arranged beside the conveying belt and is used for providing a film; the deviation rectifying mechanism is arranged between the film pasting station and the film supplying machine and can rectify the film supplied by the film supplying machine; the material moving mechanism is arranged at the film pasting station and can transfer the rectified film to a battery cover plate in the film pasting station, so that the film is attached to an explosion-proof valve of the battery cover plate.

Preferably, the conveying belt comprises a guide frame, a driving motor and a driving belt; the film pasting station is arranged on the guide frame, the transmission belt is movably arranged on the guide frame, and the driving motor is arranged on the guide frame and is in driving connection with the transmission belt; the battery cover plate is arranged on the transmission belt, and when the driving motor drives the transmission belt to move, the battery cover plate can be driven to move towards the length direction of the guide frame.

Preferably, the positioning mechanism comprises a support and a supporting piece, and the support is arranged beside the conveying belt and is designed corresponding to the film pasting station; the supporting pieces are at least provided with two groups, the two groups of supporting pieces are symmetrically arranged on two sides of the support and enclose the conveying belt, and the two groups of supporting pieces can be mutually close or mutually far away so as to support the battery cover plate at the film pasting station or return to the original position after being separated from the battery cover plate.

Preferably, the supporting piece comprises a first cylinder and a supporting block, the first cylinder is mounted on the support, and the supporting block is mounted on a telescopic shaft of the first cylinder; the first cylinder can drive the abutting block to enter and exit the film pasting station so as to abut against or separate from the battery cover plate in the film pasting station.

Preferably, the material moving mechanism comprises a moving component and a film sucking component, the moving component is slidably arranged on the support and is positioned above the film attaching station, and the moving component can be away from or close to the deviation correcting mechanism; the film sucking component is arranged on the moving component; when the moving assembly approaches the deviation correcting mechanism, the membrane sucking assembly can suck the membrane at the deviation correcting mechanism; when the moving assembly is far away from the deviation correcting mechanism, the membrane absorbing assembly can move the absorbed membrane into the membrane attaching station and attach the explosion-proof valve of the battery cover plate.

Preferably, the moving assembly comprises a fixed frame and a second air cylinder, the fixed frame is slidably arranged on the support, and the second air cylinder is arranged on the support and can drive the fixed frame to be far away from or close to the deviation correcting mechanism; the suction membrane assembly comprises a suction head and a third air cylinder, the suction head is slidably arranged on the fixing frame, the third air cylinder is arranged on the fixing frame and can drive the suction head to move up and down, so that the suction head can suck a membrane in the deviation correcting mechanism, and the membrane is transferred to the membrane pasting station to be attached to an explosion-proof valve of the battery cover plate.

Preferably, the deviation rectifying mechanism comprises a connecting seat, a four-claw cylinder and a storage block; the connecting seat is arranged between the film pasting station and the film supplying machine; the four-claw cylinder is arranged on the connecting seat, four retractable clamping jaws are arranged on the four-claw cylinder, and the four clamping jaws are mutually enclosed to form a storage cavity; the object placing block is arranged in the object placing cavity, and an anti-sticking surface is arranged on the object placing block; after the film feeding machine transfers the film to the storage cavity, the adhesive surface of the film is attached to the anti-sticking surface of the storage block, and the four claw cylinders can drive the four clamping jaws to synchronously abut against the four sides of the film so as to finely adjust and rectify the film.

Preferably, the deviation rectifying mechanism further comprises a sensing piece, wherein the sensing piece is installed at the object placing cavity and is electrically connected with the four-claw cylinder, and the sensing piece is used for detecting whether a diaphragm exists on the object placing block and feeding back signals to the four-claw cylinder.

Preferably, the film supplying machine comprises a film discharging material roll, a film collecting driving mechanism, a film tearing table and a film tearing mechanism; the film discharging material roll is used for outputting a film belt in a rotating mode, and a plurality of films are attached to the surface of the film belt; the film collecting driving mechanism is arranged on an output path of the film belt and is used for driving the film belt to move along the output direction; the film tearing table is arranged on an output path of the film belt, and is provided with a through groove for the film belt to pass downwards; the film tearing mechanism is movably arranged between the film tearing table and the deviation rectifying mechanism, so as to tear the film on the film tearing table and transfer the film into the deviation rectifying mechanism.

(III) beneficial effects

According to the deviation rectifying film sticking device for the battery cover plate, the rotating platform piece is designed to drive the cover plates to pass through the electrical detection assembly one by one for detection, and the taking and placing positions of the cover plates on the rotating platform piece are limited by the design of the material shifting station; through design material loading subassembly and unloading subassembly that misplaces each other on same support be used for getting to put and move material station department apron, not only guaranteed the continuity of apron material loading and unloading, and overall structure is compact, only needs a transfer chain can accomplish the transport of apron to reduce space occupation and reduce cost effectively.

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 and together with the embodiments of the utility model and do not constitute a limitation to the utility model, and in which:

FIG. 1 shows a schematic overall structure of the present utility model;

FIG. 2 shows an enlarged view at A in FIG. 1;

FIG. 3 shows a top view of FIG. 1;

FIG. 4 shows a partial schematic diagram of the present utility model;

FIG. 5 shows an enlarged view at B in FIG. 4;

FIG. 6 shows a second partial schematic diagram of the present utility model;

FIG. 7 shows a partial schematic diagram III of the present utility model;

FIG. 8 shows an enlarged view at C in FIG. 7;

FIG. 9 shows a schematic structural view of the laminator of the utility model;

fig. 10 shows an enlarged view at D in fig. 9.

In the figure: 1 conveyer belt, 10 film laminating station, 11 guide frame, 12 driving motor, 13 driving belt, 2 positioning mechanism, 21 support, 22 support, 221 first cylinder, 222 support piece, 3 film feeder, 31 film outlet material roll, 32 film collecting driving mechanism, 33 film tearing bench, 33m through groove, 34 film tearing mechanism, 4 correction mechanism, 41 connecting seat, 42 four-jaw cylinder, 421 clamping jaw, 420 object placing cavity, 43 object placing block, 430 anti-sticking surface, 44 sensing piece, 5 material moving mechanism, 51 moving component, 511 fixing frame, 512 second cylinder, 52 film sucking component, 521 suction head, 522 third cylinder, G battery cover plate, G1 explosion-proof valve, m film belt and m1 film.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, a correction film sticking device for a battery cover plate comprises a positioning mechanism 2, a conveyer belt 1 provided with a film sticking station 10, a film feeder 3, a correction mechanism 4 and a material moving mechanism 5; the positioning mechanism 2 can position the battery cover plate G conveyed by the conveying belt 1 to the film pasting station 10; the film feeder 3 is arranged beside the conveyor belt 1 and is used for providing a film m1; the deviation correcting mechanism 4 is arranged between the film pasting station 10 and the film supplying machine 3 and can correct the deviation of the film m1 provided by the film supplying machine 3; the material moving mechanism 5 is arranged at the film pasting station 10 and can transfer the corrected film m1 to the battery cover plate G in the film pasting station 10, so that the film m1 is attached to the explosion-proof valve G1 of the battery cover plate G.

Specifically, during the use, carry battery apron G to pad pasting station 10 department via conveyer belt 1, it is fixed in current position through positioning mechanism 2 again, then adjusts diaphragm m1 that supplies membrane machine 3 to provide through rectifying mechanism 4, and the diaphragm m1 after will adjusting is taken off and is aligned with battery apron G that has been fixed a position by material shifting mechanism 5 again, drives diaphragm m1 at last and pastes explosion-proof valve G1 of battery apron G can.

In summary, the deviation rectifying mechanism 4 is designed between the film pasting station 10 and the film feeder 3 and is used for carrying out fine adjustment deviation rectifying positioning on the film m1 provided by the film feeder 3, and the material moving mechanism 5 is designed for transferring the adjusted film m1, so that the taken film m1 can be accurately aligned with and attached to the explosion-proof valve G1 of the battery cover plate G, and the film pasting precision and the finished product quality are effectively improved.

Referring to fig. 1 to 4, a conveyor belt 1 includes a guide frame 11, a driving motor 12, and a transmission belt 13; the guide frame 11 is provided with a film sticking station 10, the transmission belt 13 is movably arranged on the guide frame 11, and the driving motor 12 is arranged on the guide frame 11 and is in driving connection with the transmission belt 13.

Specifically, when the device is used, the battery cover plate G is placed on the driving belt 13, the driving motor 12 drives the driving belt 13 to move, namely the battery cover plate G can be driven to move towards the length direction of the guide frame 11 until the battery cover plate G moves to the film pasting station 10, and the driving motor 12 stops running, so that the battery cover plate G is stagnated; at the moment, the movement of the battery cover plate G is limited by the positioning mechanism 2, so that corresponding film pasting operation can be performed; after the film is pasted, the limitation of the positioning mechanism 2 on the battery cover plate G is released, the driving motor 12 is started to drive the driving belt 13 to run, and the battery cover plate G is moved out of the film pasting station 10 to the next process.

It should be noted that the conveyor belt 1 may be of various kinds, and other conveying structures in the mechanical field may be employed as required in addition to the above-described structural design, and the present utility model is not limited to the examples given by way of example.

Referring to fig. 4-6, the positioning mechanism 2 comprises a support 21 and a supporting member 22, wherein the support 21 is arranged beside the conveyor belt 1 and is designed corresponding to the film sticking station 10; the supporting members 22 are at least provided with two groups, the two groups of supporting members 22 are symmetrically arranged on two sides of the support 21 and enclose the conveyor belt 1, and the two groups of supporting members 22 can be mutually close to or far away from each other so as to support the battery cover plate G at the film pasting station 10, or return to the original position after being separated from the battery cover plate G.

Specifically, in the conventional case, the two sets of abutments 22 are spaced apart from each other and are positioned outside the conveyor belt 1, so as to prevent them from obstructing the normal movement of the battery cover plate G; when the battery cover plate G is conveyed to the film pasting station 10 by the conveyor belt 1, the two groups of propping pieces 22 are controlled to be mutually close and enter the conveyor belt 1 so as to prop against and fix the battery cover plate G, so that the battery cover plate G is prevented from shaking in the film pasting process, and the film pasting stability and the film pasting precision are improved; after the film is pasted, the two groups of propping pieces 22 are controlled to be separated from the battery cover plate G and return to the original position.

Referring to fig. 4-6, the abutment 22 is of various types, and for convenience of understanding, in this embodiment, the abutment 22 includes a first cylinder 221 and an abutment 222, the first cylinder 221 is mounted on the support 21, and the abutment 222 is mounted on a telescopic shaft of the first cylinder 221; the first cylinder 221 can drive the abutting block 222 to enter and exit the film pasting station 10 so as to abut against or separate from the battery cover plate G in the film pasting station 10; by controlling the first cylinders 221 of the two sets of supporting members 22 to operate synchronously, the two supporting blocks 222 can be driven to be close to or far away from each other, so as to synchronously abut against or separate from the battery cover plate G at the film laminating station 10.

Referring to fig. 5-7, the material moving mechanism 5 includes a moving component 51 and a film sucking component 52, the moving component 51 is slidably mounted on the support 21 and is located above the film sticking station 10, and the moving component 51 can be away from or close to the deviation correcting mechanism 4; the membrane sucking assembly 52 is mounted on the moving assembly 51; when the moving assembly 51 approaches the deviation correcting mechanism 4, the film sucking assembly 52 can suck the film m1 at the deviation correcting mechanism 4; when the moving assembly 51 is far away from the deviation rectifying mechanism 4, the membrane absorbing assembly 52 can attach the absorbed membrane m1 to the explosion-proof valve G1 of the battery cover plate G.

Specifically, in the conventional case, the moving assembly 51 is far away from the deviation rectifying mechanism 4, so that the film feeder 3 can smoothly feed the film to the deviation rectifying mechanism 4; after the deviation rectifying mechanism 4 adjusts the membrane m1, the moving assembly 51 is controlled to draw close the deviation rectifying mechanism 4, so that the membrane absorbing assembly 52 is aligned and absorbs the membrane m1, and finally the moving assembly 51 is controlled to return to the original position, and the absorbed membrane m1 is moved into the membrane pasting station 10, so that the membrane m1 is attached to the explosion-proof valve G1 of the battery cover plate G.

Referring to fig. 5-7, the moving assembly 51 includes a fixing frame 511 and a second air cylinder 512, the fixing frame 511 is slidably mounted on the support 21, and the second air cylinder 512 is mounted on the support 21 and can drive the fixing frame 511 away from or towards the deviation correcting mechanism 4; the suction membrane assembly 52 includes a suction head 521 slidably mounted on the fixing frame 511, and a third cylinder 522 mounted on the fixing frame 511 and driving the suction head 521 to move up and down so that the suction head 521 can suck and release the membrane m1.

Specifically, after the deviation correcting mechanism 4 adjusts the membrane m1, the second cylinder 512 is started to drive the fixing frame 511 to approach the deviation correcting mechanism 4, and the third cylinder 522 is started to drive the suction head 521 to move downwards to abut against the suction membrane m1; then, the air cylinder is started to drive the suction head 521 to move upwards to take the membrane m1 out of the deviation rectifying mechanism 4, the second air cylinder 512 drives the fixing frame 511 to be far away from the deviation rectifying mechanism 4 and returns to the original position, the membrane m1 on the suction head 521 is aligned with the explosion-proof valve G1 of the battery cover plate G, and finally the third air cylinder 522 is started again to drive the suction head 521 to move downwards, so that the membrane m1 can be attached to the explosion-proof valve G1.

It should be noted that, the second air cylinder 512 and the third air cylinder 522 in the moving assembly 51 and the suction membrane assembly 52 can be replaced by a screw motor or other driving source, and the suction head 521 in the suction membrane assembly 52 is a suction cup, which is not described in detail in the present utility model because the related art is relatively existing.

Referring to fig. 7-8, the deviation rectifying mechanism 4 includes a connecting seat 41, a four-jaw cylinder 42 and a storage block 43; the connecting seat 41 is arranged between the film attaching station 10 and the film supplying machine 3; the four-jaw air cylinder 42 is arranged on the connecting seat 41, four retractable clamping jaws 421 are arranged on the four-jaw air cylinder 42, and the four clamping jaws 421 are mutually enclosed to form a storage cavity 420; the object placing block 43 is installed in the object placing cavity 420, and an anti-sticking surface 430 is arranged on the object placing block 43.

Specifically, when in use, the film feeder 3 transfers the film m1 into the storage cavity 420, and makes the adhesive surface of the film m1 adhere to the anti-sticking surface 430 of the storage block 43, at this time, the four-claw cylinder 42 is started to drive the four clamping claws 421 to synchronously abut against four sides of the film m1, and the anti-sticking surface 430 on the storage block 43 can prevent the film m1 from being adhered and fixed, so that the four clamping claws 421 can drive the film m1 to perform fine adjustment and deviation correction after abutting against the film m 1;

After the membrane m1 is adjusted, a material taking mechanism is started to enter the storage cavity 420 to absorb the membrane m1, then the four-claw air cylinder 42 is started to drive the four clamping claws 421 to synchronously loosen the four sides of the membrane m1, and finally the membrane m1 is taken away by the material taking mechanism, so that the membrane pasting operation can be performed.

It should be noted that, a plurality of cylinders may be directly designed on the base to synchronously control the plurality of clamping jaws 421, so as to replace the four-jaw cylinder 42, and the type of the deviation rectifying mechanism 4 is not limited in the present utility model due to the similar diversity of structures; on the other hand, the anti-adhesion surface 430 of the object placing block 43 is coated with a nano anti-adhesion coating to provide an anti-adhesion function, and the nano anti-adhesion coating can enable metal or related materials to realize the functional characteristics of non-adhesion and non-adhesion on the surface, which is not further described in the present utility model because it belongs to the prior art.

Referring to fig. 8, the deviation rectifying mechanism 4 further includes a sensing element 44, where the sensing element 44 is installed at the object placing cavity 420 and electrically connected to the four-jaw air cylinder 42, so as to detect whether the diaphragm m1 exists on the object placing block 43 and feed back a signal to the four-jaw air cylinder 42.

Specifically, when the sensing member 44 detects that the film m1 exists on the object placing block 43, the sensing member 44 feeds back a shrinkage signal to the four-jaw air cylinder 42, so that the four clamping jaws 421 are close to each other; if the sensing member 44 detects that the object placing block 43 has no film m1, the sensing member 44 feeds back an expansion signal to the four-jaw air cylinder 42 so that the four jaws 421 are far away from each other.

The sensing element 44 may be an infrared sensor, an optical fiber sensor, a distance driver, etc., and the technology of controlling the operation time of the electrical element by the sensor is more conventional, so the circuit structure of the sensing element is not described in detail in the present utility model.

Referring to fig. 1 to 3 and 9 to 10, the film feeder 3 includes a film feeding roll 31, a film collecting driving mechanism 32, a film tearing table 33 and a film tearing mechanism 34; the film material roll 31 is used for outputting a film strip m in a rotating mode, and a plurality of films m1 are attached to the surface of the film strip m; the film collecting driving mechanism 32 is arranged on the output path of the film strip m and is used for driving the film strip m to move along the output direction; the film tearing platform 33 is arranged on the output path of the film strip m, and a through groove 33m for the film strip m to pass downwards is arranged on the film tearing platform 33; the film tearing mechanism 34 is movably arranged between the film tearing table 33 and the deviation rectifying mechanism 4, and the film tearing mechanism 34 can transfer the film m1 on the film tearing table 33 into the deviation rectifying mechanism 4.

Specifically, when film is supplied, the film collecting driving mechanism 32 operates and drives the film strip m to move along the output direction, when the film strip m is positioned on the film tearing table 33, the film tearing mechanism 34 is started to adsorb and drive the film m1 on the film strip m, and then the film m1 on the film tearing table 33 can be torn off and the film m1 is transferred into the deviation correcting mechanism 4.

It should be noted that, the film feeder 3 is actually a film sticking machine, the detailed structure and working principle thereof belong to the prior art, only the names thereof are partially modified for understanding, and specific content can refer to the application patent mentioned in the background art, and redundant description is not made here.

It should also be noted that while embodiments of the present application have been shown and described, it will be appreciated 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 application.

Claims

1. The utility model provides a battery cover board is with subsides membrane device of rectifying, includes positioning mechanism (2) and is equipped with conveyer belt (1) of pad pasting station (10), positioning mechanism (2) can be with battery cover board (G) of conveyer belt (1) transport to pad pasting station (10) department; characterized by further comprising:

The film feeding machine (3) is arranged beside the conveying belt (1) and is used for providing a film (m 1);

The deviation rectifying mechanism (4) is arranged between the film pasting station (10) and the film feeding machine (3) and can rectify the film (m 1) provided by the film feeding machine (3);

The material transferring mechanism (5), the material transferring mechanism (5) is arranged at the film pasting station (10), and can transfer the corrected film (m 1) to the battery cover plate (G) in the film pasting station (10), so that the film (m 1) is attached to the explosion-proof valve (G1) of the battery cover plate (G).

2. The correction film sticking device for the battery cover plate according to claim 1, wherein the conveying belt (1) comprises a guide frame (11), a driving motor (12) and a driving belt (13); the film sticking station (10) is arranged on the guide frame (11), the transmission belt (13) is movably arranged on the guide frame (11), and the driving motor (12) is arranged on the guide frame (11) and is in driving connection with the transmission belt (13); the battery cover plate (G) is arranged on the driving belt (13), and when the driving motor (12) drives the driving belt (13) to move, the battery cover plate (G) can be driven to move towards the length direction of the guide frame (11).

3. The correction film pasting device for the battery cover plate according to claim 1, wherein the positioning mechanism (2) comprises a support (21) and a supporting piece (22), and the support (21) is arranged beside the conveying belt (1) and is designed corresponding to the film pasting station (10); the supporting pieces (22) are at least provided with two groups, the two groups of supporting pieces (22) are symmetrically arranged on two sides of the support (21) and enclose the conveying belt (1), and the two groups of supporting pieces (22) can be mutually close or mutually far away so as to support the battery cover plate (G) at the film pasting station (10) or return to the original position after being separated from the battery cover plate (G).

4. A correction film sticking device for a battery cover plate according to claim 3, characterized in that the abutting piece (22) comprises a first cylinder (221) and an abutting block (222), the first cylinder (221) is mounted on the support (21), and the abutting block (222) is mounted on a telescopic shaft of the first cylinder (221); the first air cylinder (221) can drive the abutting block (222) to enter and exit the film pasting station (10) so as to abut against or separate from a battery cover plate (G) in the film pasting station (10).

5. A correction film sticking device for a battery cover plate according to claim 3, characterized in that the material moving mechanism (5) comprises a moving component (51) and a film sucking component (52), the moving component (51) is slidably arranged on the support (21) and is positioned above the film sticking station (10), and the moving component (51) can be far away from or close to the correction mechanism (4); the membrane sucking component (52) is arranged on the moving component (51); when the moving assembly (51) is close to the deviation correcting mechanism (4), the film sucking assembly (52) can suck a film (m 1) at the position of the deviation correcting mechanism (4); when the moving assembly (51) is far away from the deviation correcting mechanism (4), the film sucking assembly (52) can move the sucked film (m 1) into the film pasting station (10) and attach the explosion-proof valve (G1) of the battery cover plate (G).

6. The correction film device for a battery cover plate according to claim 5, wherein the moving assembly (51) comprises a fixing frame (511) and a second air cylinder (512), the fixing frame (511) is slidably mounted on the support (21), and the second air cylinder (512) is mounted on the support (21) and can drive the fixing frame (511) to be away from or close to the correction mechanism (4); the suction membrane assembly (52) comprises a suction head (521) and a third air cylinder (522), the suction head (521) is slidably installed on the fixing frame (511), the third air cylinder (522) is installed on the fixing frame (511) and can drive the suction head (521) to move up and down, so that the suction head (521) can suck a membrane (m 1) in the deviation correcting mechanism (4), and the membrane (m 1) is transferred to the explosion-proof valve (G1) of the battery cover plate (G) attached at the position of the film attaching station (10).

7. The correction film sticking device for the battery cover plate according to claim 1, wherein the correction mechanism (4) comprises a connecting seat (41), a four-claw cylinder (42) and a storage block (43); the connecting seat (41) is arranged between the film pasting station (10) and the film feeding machine (3); the four-jaw air cylinder (42) is arranged on the connecting seat (41), four retractable clamping jaws (421) are arranged on the four-jaw air cylinder (42), and the four clamping jaws (421) are mutually enclosed to form a storage cavity (420); the object placing block (43) is arranged in the object placing cavity (420), and an anti-sticking surface (430) is arranged on the object placing block (43);

After the film feeder (3) transfers the film (m 1) into the object placing cavity (420), the adhesive surface of the film (m 1) is attached to the anti-sticking surface (430) of the object placing block (43), and the four-claw air cylinder (42) can drive the four clamping claws (421) to synchronously abut against four sides of the film (m 1) so as to finely adjust and rectify the film (m 1).

8. The correction film sticking device for the battery cover plate according to claim 7, wherein the correction mechanism (4) further comprises a sensing piece (44), and the sensing piece (44) is installed at the object placing cavity (420) and is electrically connected with the four-claw air cylinder (42) so as to be used for detecting whether a film (m 1) exists on the object placing block (43) and feeding back a signal to the four-claw air cylinder (42).

9. The correction film pasting device for the battery cover plate according to claim 1, wherein the film supplying machine (3) comprises a film discharging material roll (31), a film collecting driving mechanism (32), a film tearing table (33) and a film tearing mechanism (34); the film discharging material roll (31) is used for outputting a film belt (m) in a rotating mode, and a plurality of films (m 1) are attached to the surface of the film belt (m); the film collecting driving mechanism (32) is arranged on the output path of the film strip (m) and is used for driving the film strip (m) to move along the output direction; the film tearing table (33) is arranged on the output path of the film strip (m), and a through groove (33 m) for the film strip (m) to pass downwards is formed in the film tearing table (33); the film tearing mechanism (34) is movably arranged between the film tearing table (33) and the deviation rectifying mechanism (4) so as to tear the film (m 1) on the film tearing table (33) and transfer the film (m 1) into the deviation rectifying mechanism (4).