阅读说明：本技术 锂电池注液孔自动贴保护片设备 (Automatic protection sheet sticking equipment for lithium battery injection hole ) 是由 娄帅帅 戚银银 王启岁 陈默 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种锂电池注液孔自动贴保护片设备,涉及锂电池生产技术领域,包括锂电池定位机构、保护片载体、保护片、送料机构、载体定位机构、转移机构、贴片机构、检测机构、剔除机构；锂电池定位机构能够定位锂电池；保护片载体上装有保护片；送料机构上装有保护片载体；转移机构能够将保护片载体从送料机构上转移到载体定位机构上；贴片机构能够从位于载体定位机构上的保护片载体上将保护片移走并贴在位于锂电池定位机构上的锂电池的注液孔上；检测机构能够检测保护片的贴片位置；剔除机构能够将锂电池从锂电池定位机构上剔除。本发明的优点在于：避免了注液过程中电解液污染焊接区,贴片质量高。(The invention discloses automatic protection sheet sticking equipment for a lithium battery liquid injection hole, which relates to the technical field of lithium battery production and comprises a lithium battery positioning mechanism, a protection sheet carrier, a protection sheet, a feeding mechanism, a carrier positioning mechanism, a transfer mechanism, a sheet sticking mechanism, a detection mechanism and an eliminating mechanism; the lithium battery positioning mechanism can position the lithium battery; the protective plate carrier is provided with a protective plate; the feeding mechanism is provided with a protective sheet carrier; the transfer mechanism can transfer the protective sheet carrier from the feeding mechanism to the carrier positioning mechanism; the sticking mechanism can remove the protective sheet from the protective sheet carrier positioned on the carrier positioning mechanism and stick the protective sheet to the liquid injection hole of the lithium battery positioned on the lithium battery positioning mechanism; the detection mechanism can detect the position of the paster of the protection sheet; the rejecting mechanism can reject the lithium battery from the lithium battery positioning mechanism. The invention has the advantages that: the welding area is prevented from being polluted by electrolyte in the liquid injection process, and the quality of the paster is high.)

1. The utility model provides an automatic screening glass equipment that pastes in lithium cell notes liquid hole which characterized in that: the device comprises a lithium battery positioning mechanism (1), a protection sheet carrier (2), a protection sheet (3), a feeding mechanism (4), a carrier positioning mechanism (6), a transfer mechanism (7), a sheet sticking mechanism (8), a detection mechanism (10) and a rejection mechanism (11); the lithium battery positioning mechanism (1) can position a lithium battery (20); the protective sheet carrier (2) is provided with a protective sheet (3); the feeding mechanism (4) is provided with a protective sheet carrier (2); the transfer mechanism (7) can transfer the protective sheet carrier (2) from the feeding mechanism (4) to the carrier positioning mechanism (6); the sticking mechanism (8) can remove the protective sheet (3) from the protective sheet carrier (2) on the carrier positioning mechanism (6) and stick the protective sheet to the liquid injection hole of the lithium battery (20) on the lithium battery positioning mechanism (1); the detection mechanism (10) can detect the position of the sticking piece of the protection sheet (3); the removing mechanism (11) can remove the lithium battery (20) from the lithium battery positioning mechanism (1).

2. The automatic protective sheet attaching device for a lithium battery injection hole according to claim 1, wherein: the lithium battery positioning mechanism (1) comprises a second driving device, a first rotating disc (11) and a lithium battery clamp (12); the second driving device can drive the first rotary disc (11) to rotate around a vertical central shaft; lithium battery anchor clamps (12) are installed on first carousel (11), lithium battery anchor clamps (12) can press from both sides tight lithium cell (20).

3. The automatic protective sheet attaching device for a lithium battery injection hole according to claim 1, wherein: the feeding mechanism (4) comprises a first driving device (41), an indexer (42), a second turntable (43), a carrier limiting device (44) and a first air cylinder (45); the first driving device (41) is connected with the second rotary disc (43) through the indexer (42), and the first driving device (41) can drive the second rotary disc (43) to rotate around a vertical central shaft; the carrier limiting device (44) is arranged on the second turntable (43), and the carrier limiting device (44) can limit the protection sheet carrier (2) above the second turntable (43); the first air cylinder (45) is installed on the second rotating disc (43), the telescopic direction of the first air cylinder (45) is along the vertical direction, and the telescopic end of the first air cylinder (45) is supported at the bottom of the protective sheet carrier (2) limited in the limiting device (44).

4. The automatic protective sheet attaching device for a lithium battery injection hole according to claim 3, wherein: a plurality of carrier limiting devices (44) are arranged on the second turntable (43) at intervals around the rotating central shaft of the second turntable (43); the feeding mechanism (4) further comprises a sensor (46), a plurality of sensors (46) are respectively mounted on the second rotary table (43), each sensor (46) corresponds to one carrier limiting device (44), and the sensor (46) can sense the protection sheet carriers (2) limited in the corresponding carrier limiting devices (44).

5. The automatic protective sheet attaching device for a lithium battery injection hole according to claim 1, wherein: the transfer mechanism (7) comprises a transfer bracket (71), a second air cylinder (72), a sliding block (73), a sliding rod (74), a sucker bracket (75) and an integrated sucker (76); the second air cylinder (72) is installed on the transfer support (71), the telescopic direction of the second air cylinder (72) is along the horizontal direction, and the telescopic end of the second air cylinder (72) is fixedly connected with the sliding block (73); the sliding rod (74) is fixedly connected to the transfer support (71), the length direction of the sliding rod (74) is parallel to the telescopic direction of the second air cylinder (72), and the sliding block (73) is in sliding fit with the sliding rod (74); the sucker support (75) is fixedly connected with the sliding block (73), and the integrated sucker (76) is installed on the sucker support (75).

6. The automatic protective sheet attaching device for a lithium battery injection hole according to claim 1, wherein: the chip mounting mechanism (8) comprises a chip mounting mechanical arm (81), a third cylinder (82), a chip mounting module (83) and a CCD camera (84); the pasting mechanical arm (81) can move between the upper part of the lithium battery positioning mechanism (1) and the upper part of the carrier positioning mechanism (6); the third air cylinder (82) is installed at the tail end of the chip mounting mechanical arm (81), the telescopic direction of the third air cylinder (82) is along the vertical direction, and the telescopic end of the third air cylinder (82) is fixedly connected with the chip mounting module (83); the CCD camera (84) is arranged at the tail end of the chip mounting mechanical arm (81) and is positioned on one side of the chip mounting module (83).

7. The automatic protective sheet attaching device for a lithium battery injection hole according to claim 1, wherein: the detection mechanism (10) comprises a detection support (101), a sixth air cylinder (102) and a CCD module (103), the sixth air cylinder (102) is installed on the detection support (101), the telescopic direction of the sixth air cylinder (102) is along the horizontal direction, and the telescopic end of the sixth air cylinder (102) is fixedly connected with the CCD module (103).

8. The automatic protective sheet attaching device for a lithium battery injection hole according to claim 1, wherein: the rejecting mechanism (11) comprises a rejecting mechanical arm (111), a seventh cylinder (112) and a rejecting module (113); the removing mechanical arm (111) can move to the position above the lithium battery positioning mechanism (1); the seventh cylinder (112) is installed at the tail end of the rejecting mechanical arm (111), the telescopic direction of the seventh cylinder (112) is along the vertical direction, and the telescopic end of the seventh cylinder (112) is fixedly connected with the rejecting module (113).

9. The automatic protective sheet attaching device for a lithium battery injection hole according to claim 1, wherein: the automatic protective sheet sticking equipment for the lithium battery liquid injection hole further comprises a carrier collecting mechanism (5), wherein the transfer mechanism (7) can transfer the protective sheet carrier (2) from the carrier positioning mechanism (6) to the carrier collecting mechanism (5).

10. The automatic protective sheet attaching device for a lithium battery injection hole according to claim 1, wherein: the automatic protective sheet sticking device for the lithium battery liquid injection hole further comprises a sheet pressing mechanism (9), wherein the sheet pressing mechanism (9) comprises a sheet pressing support (91), a fourth cylinder (92), a sliding support (93), a fifth cylinder (94) and a pressure head (95); the fourth air cylinder (92) is installed on the pressing sheet support (91), the telescopic direction of the fourth air cylinder (92) is along the horizontal direction, and the telescopic end of the fourth air cylinder (92) is fixedly connected with the sliding support (93); the sliding support (93) is in sliding fit with the pressing sheet support (91); the fifth air cylinder (94) is installed on the sliding support (93), the stretching direction of the fifth air cylinder (94) is along the vertical direction, and the stretching end of the fifth air cylinder (94) is fixedly connected with the pressure head (95).

Technical Field

The invention relates to the technical field of lithium battery production, in particular to an automatic protective sheet sticking device for a lithium battery liquid injection hole.

Background

The lithium battery has the advantages of small volume, large capacity, long service life, low self-discharge rate, no memory effect, environmental protection and the like, and is widely applied to commercial vehicles, special vehicles, electric bicycles, energy storage systems, medical instruments and the like at present. The sealing process is one of the key processes in lithium battery production, and poor sealing can lead to direct scrapping of the battery. Before the welding is sealed to the lithium cell, producers generally adopt dustless cloth to dip in alcohol and clean lithium cell notes liquid hole, should clean mode inefficiency, intensity of labour is big, unsafe, has the condition of leaking to wipe and cleaning the effect differs, leads to sealing welding process welding quality problem to appear. The cleanness of the liquid injection hole of the lithium battery is one of key factors for good welding, the cleanliness determines the welding effect, and the unclean liquid injection hole easily causes welding defects such as explosive spots, pinholes, liquid leakage and the like in the welding process.

Patent document No. CN108878772A discloses a sheet sticking device for a lithium battery liquid injection hole protection sheet, which comprises a battery flow pull wire and a feeding mechanism arranged on a bottom plate in parallel, wherein a support frame is arranged between the battery flow pull wire and the feeding mechanism, the bottom end of the support frame is connected with a base through a rotating seat, and the top end of the support frame is fixedly provided with a lifting mechanism; the bottom end of the lifting mechanism is connected with a patch manipulator; the feeding mechanism comprises a protection sheet adhered on the adhesive tape and a clamping manipulator used for clamping the adhesive tape. The device easily causes unqualified lithium cell of paster to get into next process, and the paster quality is difficult to guarantee.

Disclosure of Invention

The invention aims to provide equipment for automatically sticking a protective sheet to a lithium battery liquid injection hole, which can improve the quality of sticking sheets.

The invention solves the technical problems through the following technical means: the automatic protection sheet sticking device for the lithium battery liquid injection hole comprises a lithium battery positioning mechanism (1), a protection sheet carrier (2), a protection sheet (3), a feeding mechanism (4), a carrier positioning mechanism (6), a transfer mechanism (7), a sheet sticking mechanism (8), a detection mechanism (10) and a rejection mechanism (11); the lithium battery positioning mechanism (1) can position a lithium battery (20); the protective sheet carrier (2) is provided with a protective sheet (3); the feeding mechanism (4) is provided with a protective sheet carrier (2); the transfer mechanism (7) can transfer the protective sheet carrier (2) from the feeding mechanism (4) to the carrier positioning mechanism (6); the sticking mechanism (8) can remove the protective sheet (3) from the protective sheet carrier (2) on the carrier positioning mechanism (6) and stick the protective sheet to the liquid injection hole of the lithium battery (20) on the lithium battery positioning mechanism (1); the detection mechanism (10) can detect the position of the sticking piece of the protection sheet (3); the removing mechanism (11) can remove the lithium battery (20) from the lithium battery positioning mechanism (1). By attaching the protection plate to the liquid injection hole of the lithium battery, the situation that the welding area is polluted by electrolyte in the liquid injection process is avoided, and the cleanliness of the welding area is ensured, so that the welding quality is ensured, and the welding qualification rate is improved; by arranging the detection mechanism and the rejection mechanism, unqualified lithium batteries can be rejected, the unqualified lithium batteries can be prevented from entering the next procedure, and the quality of the paster is improved; the equipment has high efficiency, full automation and high precision, improves the safety and reduces the labor intensity.

As an optimized technical scheme, the lithium battery positioning mechanism (1) comprises a second driving device, a first rotating disc (11) and a lithium battery clamp (12); the second driving device can drive the first rotary disc (11) to rotate around a vertical central shaft; lithium battery anchor clamps (12) are installed on first carousel (11), lithium battery anchor clamps (12) can press from both sides tight lithium cell (20). First carousel can drive lithium cell anchor clamps and rotate paster station or detection station, makes things convenient for the lithium cell to carry out the paster and detect.

As an optimized technical scheme, the feeding mechanism (4) comprises a first driving device (41), an indexer (42), a second turntable (43), a carrier limiting device (44) and a first air cylinder (45); the first driving device (41) is connected with the second rotary disc (43) through the indexer (42), and the first driving device (41) can drive the second rotary disc (43) to rotate around a vertical central shaft; the carrier limiting device (44) is arranged on the second turntable (43), and the carrier limiting device (44) can limit the protection sheet carrier (2) above the second turntable (43); the first air cylinder (45) is installed on the second rotating disc (43), the telescopic direction of the first air cylinder (45) is along the vertical direction, and the telescopic end of the first air cylinder (45) is supported at the bottom of the protective sheet carrier (2) limited in the limiting device (44). The second turntable can drive the carrier limiting device to rotate to a feeding station, so that feeding is facilitated; the transfer mechanism transfers the uppermost protective sheet carrier each time, and the first air cylinder rises by a fixed height each time one protective sheet carrier is removed by rotation, and moves the uppermost protective sheet carrier at that time to a set height.

As an optimized technical scheme, a plurality of carrier limiting devices (44) are arranged on the second turntable (43) at intervals around the rotating central shaft of the second turntable (43); the feeding mechanism (4) further comprises a sensor (46), a plurality of sensors (46) are respectively mounted on the second rotary table (43), each sensor (46) corresponds to one carrier limiting device (44), and the sensor (46) can sense the protection sheet carriers (2) limited in the corresponding carrier limiting devices (44). When the sensor detects that no protective sheet carrier exists in the carrier limiting device positioned at the feeding station, the first driving device drives the second turntable to rotate through the indexer, and drives the other carrier limiting device to rotate to the feeding station.

As an optimized technical scheme, the transfer mechanism (7) comprises a transfer bracket (71), a second air cylinder (72), a sliding block (73), a sliding rod (74), a sucker bracket (75) and an integrated sucker (76); the second air cylinder (72) is installed on the transfer support (71), the telescopic direction of the second air cylinder (72) is along the horizontal direction, and the telescopic end of the second air cylinder (72) is fixedly connected with the sliding block (73); the sliding rod (74) is fixedly connected to the transfer support (71), the length direction of the sliding rod (74) is parallel to the telescopic direction of the second air cylinder (72), and the sliding block (73) is in sliding fit with the sliding rod (74); the sucker support (75) is fixedly connected with the sliding block (73), and the integrated sucker (76) is installed on the sucker support (75).

As an optimized technical scheme, the chip mounting mechanism (8) comprises a chip mounting mechanical arm (81), a third air cylinder (82), a chip mounting module (83) and a CCD camera (84); the pasting mechanical arm (81) can move between the upper part of the lithium battery positioning mechanism (1) and the upper part of the carrier positioning mechanism (6); the third air cylinder (82) is installed at the tail end of the chip mounting mechanical arm (81), the telescopic direction of the third air cylinder (82) is along the vertical direction, and the telescopic end of the third air cylinder (82) is fixedly connected with the chip mounting module (83); the CCD camera (84) is arranged at the tail end of the chip mounting mechanical arm (81) and is positioned on one side of the chip mounting module (83).

As an optimized technical scheme, the detection mechanism (10) comprises a detection support (101), a sixth air cylinder (102) and a CCD module (103), the sixth air cylinder (102) is installed on the detection support (101), the telescopic direction of the sixth air cylinder (102) is along the horizontal direction, and the telescopic end of the sixth air cylinder (102) is fixedly connected with the CCD module (103).

As an optimized technical scheme, the rejecting mechanism (11) comprises a rejecting mechanical arm (111), a seventh air cylinder (112) and a rejecting module (113); the removing mechanical arm (111) can move to the position above the lithium battery positioning mechanism (1); the seventh cylinder (112) is installed at the tail end of the rejecting mechanical arm (111), the telescopic direction of the seventh cylinder (112) is along the vertical direction, and the telescopic end of the seventh cylinder (112) is fixedly connected with the rejecting module (113).

As an optimized technical scheme, the automatic protective sheet sticking device for the lithium battery liquid injection hole further comprises a carrier collecting mechanism (5), and the transfer mechanism (7) can transfer the protective sheet carrier (2) from the carrier positioning mechanism (6) to the carrier collecting mechanism (5). The carrier collecting mechanism can collect the empty protective sheet carriers, and the empty protective sheet carriers can be loaded with the protective sheets for recycling after being recovered.

As an optimized technical scheme, the automatic protective sheet sticking device for the lithium battery liquid injection hole further comprises a sheet pressing mechanism (9), wherein the sheet pressing mechanism (9) comprises a sheet pressing support (91), a fourth air cylinder (92), a sliding support (93), a fifth air cylinder (94) and a pressure head (95); the fourth air cylinder (92) is installed on the pressing sheet support (91), the telescopic direction of the fourth air cylinder (92) is along the horizontal direction, and the telescopic end of the fourth air cylinder (92) is fixedly connected with the sliding support (93); the sliding support (93) is in sliding fit with the pressing sheet support (91); the fifth air cylinder (94) is installed on the sliding support (93), the stretching direction of the fifth air cylinder (94) is along the vertical direction, and the stretching end of the fifth air cylinder (94) is fixedly connected with the pressure head (95). The tabletting mechanism can tightly press the protection plate on the lithium battery, so that the protection plate is tightly attached to the liquid injection hole, and the welding area can be better prevented from being polluted by the electrolyte.

The invention has the advantages that: by attaching the protection plate to the liquid injection hole of the lithium battery, the situation that the welding area is polluted by electrolyte in the liquid injection process is avoided, and the cleanliness of the welding area is ensured, so that the welding quality is ensured, and the welding qualification rate is improved; by arranging the detection mechanism and the rejection mechanism, unqualified lithium batteries can be rejected, the unqualified lithium batteries can be prevented from entering the next procedure, and the quality of the paster is improved; the equipment has high efficiency, full automation and high precision, improves the safety and reduces the labor intensity.

Drawings

FIG. 1 is a schematic axial view of an apparatus for automatically attaching a protective sheet to a lithium battery injection hole according to an embodiment of the present invention.

FIG. 2 is a schematic axial view of a lithium battery mounted on a lithium battery positioning mechanism according to an embodiment of the present invention.

Fig. 3 is a schematic axial view of a protective sheet carrier mounted on a feeding mechanism according to an embodiment of the present invention.

Fig. 4 is a schematic front view of a protective sheet carrier mounted on a feeding mechanism according to an embodiment of the present invention.

FIG. 5 is an isometric view of a carrier collection mechanism according to an embodiment of the invention.

Fig. 6 is an axial view of a carrier positioning mechanism according to an embodiment of the present invention.

FIG. 7 is an axial schematic view of a transfer mechanism according to an embodiment of the present invention.

Fig. 8 is an isometric view of a patch mechanism according to an embodiment of the present invention.

Fig. 9 is an axial schematic view of a sheeting mechanism according to an embodiment of the present invention.

FIG. 10 is an axial view of a detection mechanism according to an embodiment of the present invention.

FIG. 11 is an axial schematic view of a rejection mechanism according to an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the automatic protection sheet sticking device for the lithium battery injection hole comprises a lithium battery positioning mechanism 1, a protection sheet carrier 2, a protection sheet 3, a feeding mechanism 4, a carrier collecting mechanism 5, a carrier positioning mechanism 6, a transfer mechanism 7, a sheet sticking mechanism 8, a sheet pressing mechanism 9, a detection mechanism 10, a rejecting mechanism 11 and a material manipulator (not shown).

The lithium battery positioning mechanism 1 can position the lithium battery 20; the protective sheet carrier 2 is provided with a protective sheet 3; the feeding mechanism 4 is provided with a protective sheet carrier 2; the feeding mechanism 4, the carrier collecting mechanism 5 and the carrier positioning mechanism 6 are sequentially arranged, and the transfer mechanism 7 can transfer the protection sheet carriers 2 from the feeding mechanism 4 to the carrier positioning mechanism 6 and can transfer the protection sheet carriers 2 from the carrier positioning mechanism 6 to the carrier collecting mechanism 5; the sticking mechanism 8 can remove the protective sheet 3 from the protective sheet carrier 2 on the carrier positioning mechanism 6 and stick the protective sheet on the liquid injection hole of the lithium battery 20 on the lithium battery positioning mechanism 1; the tabletting mechanism 9 can press the protection sheet 3 on the lithium battery 20; the detection mechanism 10 is capable of detecting the position of the sheet of the protective sheet 3; the removing mechanism 11 can remove the lithium battery 20 from the lithium battery positioning mechanism 1; the material manipulator can grab the lithium battery 20 onto the lithium battery positioning mechanism 1 from the logistics line, and can grab the lithium battery 20 into the next procedure from the lithium battery positioning mechanism 1.

As shown in fig. 2, the lithium battery positioning mechanism 1 includes a second driving device (not shown), a first rotating disk 11, and a lithium battery clamp 12; the second driving device can drive the first rotating disc 11 to rotate around a vertical central shaft; four lithium battery anchor clamps 12 are installed at the top of first carousel 11 around the rotation center pin a week interval of first carousel 11, and lithium battery anchor clamps 12 can press from both sides tight lithium cell 20 in the top of first carousel 11 through the cylinder, and every lithium battery anchor clamps 12 can press from both sides two lithium cells 20 tightly.

As shown in fig. 3 and 4, two rows of protective sheets 3 are mounted on each protective sheet carrier 2; the feeding mechanism 4 comprises a first driving device 41, an indexer 42, a second turntable 43, a carrier limiting device 44, a first air cylinder 45 and a sensor 46; the first driving device 41 is connected with the second turntable 43 through the indexer 42, and the first driving device 41 can drive the second turntable 43 to rotate around a vertical central shaft; two carrier limiting devices 44 are arranged on the top of the second turntable 43 at intervals around the central axis of rotation of the second turntable 43, and the carrier limiting devices 44 can limit the protective sheet carriers 2 above the second turntable 43; two sensors 46 are respectively mounted at the bottom of the second turntable 43, each sensor 46 corresponds to one carrier stopper 44, and the sensors 46 can sense the protective sheet carriers 2 which are stopped in the corresponding carrier stoppers 44; two first air cylinders 45 are respectively arranged at the bottom of the second rotating disc 43, each first air cylinder 45 corresponds to one carrier limiting device 44, the telescopic direction of each first air cylinder 45 is along the vertical direction, and the telescopic end of each first air cylinder 45 respectively passes through the second rotating disc 43 and supports the bottom of the protection sheet carrier 2 limited in the corresponding carrier limiting device 44.

As shown in fig. 5, the carrier collection mechanism 5 is an open-topped container capable of putting the protective sheet carrier 2 from above.

As shown in fig. 6, the top of the carrier positioning mechanism 6 is provided with a platform structure capable of placing and limiting the protective sheet carrier 2.

As shown in fig. 7, the transfer mechanism 7 includes a transfer bracket 71, a second cylinder 72, a slider 73, a slide bar 74, a suction cup bracket 75, and an integrated suction cup 76; the second air cylinder 72 is arranged on the transfer bracket 71, the telescopic direction of the second air cylinder 72 is along the horizontal direction, and the telescopic end of the second air cylinder 72 is fixedly connected with the sliding block 73; the sliding rod 74 is fixedly connected to the transfer bracket 71, the length direction of the sliding rod 74 is parallel to the telescopic direction of the second air cylinder 72, and the sliding block 73 is in sliding fit with the sliding rod 74; the sucker bracket 75 is fixedly connected with the slide block 73, and the integrated sucker 76 is arranged on the sucker bracket 75.

As shown in fig. 8, the mounting mechanism 8 includes a mounting robot 81, a third cylinder 82, a mounting module 83, and a CCD camera 84; the chip mounter manipulator 81 can move between the upper part of the lithium battery positioning mechanism 1 and the upper part of the carrier positioning mechanism 6 along the horizontal plane; the third cylinder 82 is installed at the tail end of the chip mounting manipulator 81, the telescopic direction of the third cylinder 82 is along the vertical direction, and the telescopic end of the third cylinder 82 is fixedly connected with the chip mounting module 83; the patch module 83 is capable of sucking two protective sheets 3 from the protective sheet carrier 2 at a time, the two sucked protective sheets 3 being located in two rows, respectively; the CCD camera 84 is installed at the end of the pick-and-place robot 81 and is located at one side of the pick-and-place module 83.

As shown in fig. 9, the sheeting mechanism 9 includes a sheeting holder 91, a fourth cylinder 92, a sliding holder 93, a fifth cylinder 94, and a ram 95; the fourth cylinder 92 is installed on the pressing sheet bracket 91, the telescopic direction of the fourth cylinder 92 is along the horizontal direction, and the telescopic end of the fourth cylinder 92 is fixedly connected with the sliding bracket 93; the sliding bracket 93 is in sliding fit with the tabletting bracket 91; two fifth cylinders 94 are installed on sliding support 93 side by side, and vertical direction is followed to the flexible direction of fifth cylinder 94, and every fifth cylinder 94's flexible end and a pressure head 95 fixed connection, two pressure heads 95 correspond two lithium cell 20 of pressing from both sides in a lithium cell anchor clamps 12 respectively.

As shown in fig. 10, the detection mechanism 10 includes a detection support 101, a sixth air cylinder 102, and a CCD module 103, the sixth air cylinder 102 is mounted on the detection support 101, the telescopic direction of the sixth air cylinder 102 is along the horizontal direction, and the telescopic end of the sixth air cylinder 102 is fixedly connected to the CCD module 103.

As shown in fig. 11, the reject mechanism 11 includes a reject robot 111, a seventh cylinder 112, and a reject module 113; the removing manipulator 111 can move above the lithium battery positioning mechanism 1; the seventh cylinder 112 is installed at the tail end of the rejecting manipulator 111, the telescopic direction of the seventh cylinder 112 is along the vertical direction, and the telescopic end of the seventh cylinder 112 is fixedly connected with the rejecting module 113.

The working process of the automatic protective sheet sticking device for the lithium battery liquid injection hole comprises the following steps:

step A, before the lithium batteries 20 are injected with liquid, a material manipulator grabs the lithium batteries 20 onto the lithium battery positioning mechanism 1 from a logistics line, each lithium battery clamp 12 clamps two lithium batteries 20, and the liquid injection holes are positioned at the tops of the lithium batteries 20; the second driving device drives the first rotating disc 11 to rotate, and drives the two lithium batteries 20 to be pasted to rotate to the pasting station.

In the step B, the protective sheet carriers 2 are respectively mounted in the two carrier limiting devices 44 of the feeding mechanism 4, and the first driving device 41 drives the second turntable 43 to rotate through the indexer 42, so as to drive one of the carrier limiting devices 44 to rotate to the feeding station.

Step C, after the feeding mechanism 4 rotates in place, the second air cylinder 72 of the transfer mechanism 7 drives the integrated sucker 76 to move to the position above the feeding station through the slider 73 and the sucker bracket 75 to suck up the uppermost protective sheet carrier 2, and then drives the integrated sucker 76 to move to the position above the carrier positioning mechanism 6 to put down the protective sheet carrier 2; when the transfer mechanism 7 rotates to remove one protective sheet carrier 2, the first air cylinder 45 corresponding to the carrier limiting device 44 positioned at the feeding station rises to a fixed height, and the uppermost protective sheet carrier 2 at the moment is lifted to a set height; when the sensor 46 detects that there is no protective sheet carrier 2 in the carrier stopper 44 of the loading station, the first driving device 41 drives the second turntable 43 to rotate via the indexer 42, and drives the other carrier stopper 44 to rotate to the loading station.

Step D, after the protective sheet carrier 2 is transferred to the carrier positioning mechanism 6, the tail end of a sheet sticking mechanical arm 81 of the sheet sticking mechanism 8 moves to the position above the carrier positioning mechanism 6, and a third air cylinder 82 drives a sheet sticking module 83 to descend so as to suck two protective sheets 3 from the protective sheet carrier 2 on the carrier positioning mechanism 6; then, the tail end of the chip mounter manipulator 81 moves to the position above the chip mounter station, after the position of the liquid injection hole is detected through the CCD camera 84, the third air cylinder 82 drives the chip mounter module 83 to descend, and the two protection plates 3 are respectively pasted on the liquid injection holes of the two lithium batteries 20 positioned on the chip mounter station and are pre-pressed; after prepressing, the sheet sticking mechanism 8 returns to the initial position, and then two protective sheets 3 are continuously sucked up; when the sheet sticking mechanism 8 sucks the protection sheet 3 for a certain number of times, the protection sheet 3 on the protection sheet carrier 2 on the carrier positioning mechanism 6 is used up, the second air cylinder 72 of the transfer mechanism 7 drives the integrated suction cup 76 to move to the upper part of the carrier positioning mechanism 6 to suck up the empty protection sheet carrier 2, and then drives the integrated suction cup 76 to move to the upper part of the carrier collecting mechanism 5 to place the empty protection sheet carrier 2 into the carrier collecting mechanism 5; the transfer mechanism 7 then transfers the next protective sheet carrier 2 from the feed mechanism 4 to the carrier positioning mechanism 6.

And step E, after the sheet sticking mechanism 8 pre-presses the protection sheets 3, the fourth cylinder 92 of the sheet pressing mechanism 9 drives the fifth cylinder 94 to move to the position above the sheet sticking station through the sliding support 93, and then the fifth cylinder 94 drives the two pressure heads 95 to descend so as to respectively press the two protection sheets 3 onto the two lithium batteries 20.

Step F, after the protection sheet 3 is pressed, a second driving device of the lithium battery positioning mechanism 1 drives the first rotary disc 11 to rotate, and drives the two lithium batteries 20 which are pasted with the sheet to rotate to a detection station; then, a sixth air cylinder 102 of the detection mechanism 10 drives the CCD module 103 to move above the detection station, and the CCD module 103 detects the concentricity and position of the patch of the protection sheet 3; after the detection is completed, the detection mechanism 10 returns to the initial position.

G, the lithium battery 20 qualified by the detection of the paster is grabbed by a material manipulator to the next procedure for liquid injection, the protective sheet 3 of the lithium battery 20 after the liquid injection is torn off by a tearing device before the seal welding, and then the lithium battery is welded; for the lithium battery 20 with unqualified paster, the tail end of the removing mechanical arm 111 of the removing mechanism 11 moves to the position above the detection station, then the seventh cylinder 112 drives the removing module 113 to descend, and the removing module 113 grasps the lithium battery 20 and then removes the mechanical arm 111 to remove the lithium battery 20.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.