Equipment for accurately coating lug of current collector of cylindrical battery with rubber

Abstract

The invention discloses a device for accurately coating a current collector tab of a cylindrical battery with rubber, which comprises a rubber coating table, a plurality of rubber coating units are arranged on the rubber coating table, and each rubber coating unit comprises a positioning seat, a material suction head, a profiling positioning mechanism, a transplanting rubber suction blowing mechanism, a sliding table mechanism and a roller rubber coating mechanism; the material suction head is arranged above the positioning seat and driven by an external manipulator or external equipment, and the material suction head is used for transferring and placing the collector piece on the positioning seat; the profiling positioning mechanism is matched with the material suction head to position the current collecting piece; the transplanting glue sucking and blowing mechanism is arranged below the positioning seat and is used for transferring a pre-cut film to the position below the current collector and pasting the film to a tab of the current collector through a jacking action; the sliding table mechanism is used for driving the roller rubber coating mechanism, so that a roller in the roller rubber coating mechanism reciprocates and coats a rubber sheet on a lug of a current collector, the effect of rubber coating on the lug is achieved, and the lug rubber coating device can realize accurate profiling positioning and is good in rubber coating effect.

Description

Technical Field

[0001] The present invention relates to the technical field of cylindrical battery manufacturing, and in particular to a device for accurately encapsulating glue on a current collector tab of a cylindrical battery. Background Art

[0002] During the production of cylindrical lithium batteries, depending on the battery process, some manufacturers equip the battery collector disc with tabs. Tabs are the carriers for energy transmission between the battery and the outside world. They are used for welding between the positive electrode and the end cap or the negative electrode and the shell to ensure a reliable connection between the positive and negative electrodes of the battery cell and the shell. Figure 1 When making the current collecting sheet 100, before welding the tab 101 and the current collecting sheet 100 together, a film 102 will be wrapped around the head of the tab 101 at a position 1-2 mm away from the edge of the current collecting sheet 100 to play an insulating role and prevent the tab 101 of the battery from short-circuiting.

[0003] The traditional process of encapsulating the tabs with glue is prone to problems such as incorrect encapsulation position, large deviation in encapsulation angle, wrinkles on the tape, leakage, loose encapsulation, deformation of the tabs, and unstable quality due to the lack of precise positioning of the current collector and the glue during the loading process. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a device for accurately encapsulating the current collector tabs of cylindrical batteries to overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A device for accurately coating the collector tabs of cylindrical batteries, comprising a coating platform on which a plurality of coating units are arranged; each coating unit comprises a positioning seat, a suction head, a contour positioning mechanism, a transplanting, suction and blowing mechanism, a sliding platform mechanism and a roller coating mechanism;

[0007] The positioning seat is provided with a boss similar in shape to the current collecting piece, and a through-glue groove is provided in the center of the positioning seat, and the through-glue groove intersects with the boss in a cross shape;

[0008] The suction head includes a first suction portion and an L-shaped second suction portion, the first suction portion and the second suction portion are integrated into a door frame shape, so that a door opening is formed between the first suction portion and the second suction portion; the first suction portion corresponds to the arc end of the suction collector, and the second suction portion corresponds to the tab end of the suction collector;

[0009] The contour positioning mechanism cooperates with the suction head to press the current collecting piece and position it on the positioning seat;

[0010] The transplanting glue suction and blowing mechanism includes a transplanting servo motor, a coupling, a linear module and a drag chain connected in sequence. The linear module is provided with a slide rail lifting frame driven by a lifting cylinder. The slide rail lifting frame is provided with a variable pitch module. The variable pitch module is provided with multiple glue suction and blowing heads at intervals. The multiple glue suction and blowing heads correspond to the multiple positioning seats one by one.

[0011] The glue sucking and blowing head is provided with a built-in air channel, which is connected to the air hole on the top surface of the glue sucking and blowing head. A docking joint is provided on one side of the glue sucking and blowing head, and the air pipe deployed in the drag chain is connected to the glue sucking and blowing head through the docking joint.

[0012] The slide mechanism drives the roller rubber coating mechanism;

[0013] The roller rubber-coated mechanism includes a wheel seat and a roller; the wheel seat is installed on the sliding block of the slide mechanism through a hinge and a guide shaft, and the roller is rotatably installed on the wheel seat, and the roller is made of non-stick material.

[0014] Furthermore, the contour positioning mechanism includes a pair of positioning claws whose opening and closing are driven by a positioning cylinder, and a limiting iron nail and a limiting iron block that cooperate with each other are arranged between the pair of positioning claws; the contour positioning mechanism is installed above the positioning seat, and the pair of positioning claws are respectively located on both sides of the boss of the positioning seat.

[0015] Furthermore, each positioning claw has a first clamping portion and a second clamping portion, and a recessed clamping groove portion is provided between the first clamping portion and the second clamping portion; the first clamping portion of the positioning claw corresponds to the arc end of the current collecting sheet, the second clamping portion of the positioning claw corresponds to the pole ear end of the current collecting sheet, and the clamping groove portion of the positioning claw corresponds to the glue through groove of the positioning seat.

[0016] Furthermore, the slide mechanism includes a slide cylinder, a slide guide rail, a sliding block and a slide limit assembly; the slide cylinder drives the slide connecting plate and the cylinder connecting plate through a floating joint, and drives multiple sliding blocks arranged on the slide guide rail through the slide connecting plate; each sliding block is equipped with a roller rubber coating mechanism, and the multiple roller rubber coating mechanisms correspond one-to-one to the multiple positioning seats.

[0017] Furthermore, the slide limit assembly includes a slide rail stop block, a cylinder iron stop seat, a cylinder buffer and a cylinder iron stop; the slide rail stop block is arranged at the end of the slide rail and limits the slide block; the cylinder iron stop seat is arranged on one side of the cylinder connecting plate, and the cylinder buffer and cylinder iron stop are arranged side by side on the cylinder iron stop seat.

[0018] Preferably, a pad is provided on the surface of the rubber-coated table, and a plurality of the positioning seats are installed side by side on the pad through holes.

[0019] Preferably, an adjustment block is further provided on the outer side of the pad.

[0020] Preferably, a return spring is sleeved on the guide shaft.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1) The cylindrical battery collector plate and ear lug encapsulation device in this case has a positioning seat provided with a boss similar in shape to the current collector for placing the current collector; each positioning claw in its contour positioning mechanism has a first clamping part and a second clamping part, and a recessed clamping groove part is provided between the first clamping part and the second clamping part; the first clamping part of the positioning claw corresponds to the arc end of the current collector, the second clamping part of the positioning claw corresponds to the ear end of the current collector, and the clamping groove part of the positioning claw corresponds to the glue through groove of the positioning seat; the current collector and the electrode on the current collector are pressed and accurately positioned by the cooperation of the contour positioning seat and the contour positioning claw, and the current collector is accurately positioned in the up, down, left and right directions to ensure that the glue and the current collector are flat and precisely fitted without producing wrinkles and bubbles, thereby ensuring the quality of the encapsulation and effectively improving the qualified rate of finished products.

[0023] 2) The cylindrical battery collector plate tab encapsulation device in this case has a suction head comprising a first suction portion and an L-shaped second suction portion, the first suction portion and the second suction portion being integrated into a door frame shape, so that a door opening is formed between the first suction portion and the second suction portion; the first suction portion corresponds to the arc end of the collector plate for suction, and the second suction portion corresponds to the tab end of the collector plate for suction; the suction head can simultaneously suction both ends of the collector plate, which not only ensures the stability of suctioning and transporting the collector plate, but also allows the roller to reciprocate in the door opening of the suction head to avoid interference with the suction head. The suction head has a simple structure, high efficiency and stable operation.

[0024] 3) The cylindrical battery collector plate tab encapsulation device in this case has a contour positioning mechanism provided with mutually cooperating limit stop iron nails and limit stop iron blocks to ensure the accuracy of the opening and closing of the positioning claws driven by the positioning cylinder, thereby further improving the positioning accuracy of the collector plate.

[0025] 4) The cylindrical battery collector plate and tab rubber coating device in this case has a slide limit assembly provided in its slide mechanism; wherein the slide rail stop block is provided at the end of the slide rail and limits the slide block; wherein the cylinder stop iron seat, cylinder buffer and cylinder stop iron jointly limit the stroke of the cylinder connecting plate; thereby effectively ensuring the accuracy of the reciprocating stroke of the roller, and further improving the position accuracy of the rubber coating on the pole piece by the roller.

[0026] 5) The cylindrical battery collector plate and tab encapsulation device in this case has a simple structure and strong practicality. All functions are centrally controlled by PLC, and relevant data is uploaded to MES, with a high degree of automation.

[0027] In order to more clearly understand the present invention, preferred embodiments of the present invention will be described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the current collector tab encapsulation process in the background technology;

[0029] Figure 2 、 Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the rubber coating platform of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the positioning seat of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the suction head of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the contour positioning mechanism of the present invention;

[0034] Figure 8 It is a structural schematic diagram of the transplanting glue suction and blowing mechanism of the present invention;

[0035] Figure 9 It is a structural schematic diagram of the slide mechanism of the present invention;

[0036] Figure 10 It is a structural schematic diagram of the roller rubber coating mechanism of the present invention.

[0037] Figure ID:

[0038] 1-Glue wrapping table, 2-Positioning seat, 3-Suction head, 4-Profiling positioning mechanism, 5-Transplanting glue suction and blowing mechanism, 6-Sliding mechanism, 7-Roller glue wrapping mechanism;

[0039] 11- pad, 12- adjustment block;

[0040] 21- boss, 22- glue through groove;

[0041] 31-first adsorption part, 32-second adsorption part, 33-door opening;

[0042] 41-positioning cylinder, 42-positioning claw, 43-limiting iron nail, 44-limiting iron block; 421-first clamping part, 422-second clamping part, 423-clamping groove part;

[0043] 51-transplanting servo motor, 52-coupling, 53-linear module, 54-drag chain, 55-slide lift, 56-variable pitch module, 57-glue suction and blowing head; 571-air hole, 572-butt joint;

[0044] 61-slide cylinder, 62-slide guide rail, 63-slide block, 64-floating joint, 65-slide connecting plate, 66-cylinder connecting plate; 671-slide rail stopper, 672-cylinder iron stopper, 673-cylinder buffer, 674-cylinder iron stopper;

[0045] 71-wheel seat, 72-roller, 73-hinged member, 74-guide shaft;

[0046] 100-current collector, 101-ear, 102-film. DETAILED DESCRIPTION

[0047] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0048] In addition, if terms such as "first" and "second" are used for descriptive purposes only, they are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying relative importance.

[0049] In addition, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the internal parts of two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Please also see Figure 1-10The present invention provides a device for accurately coating the tabs of the current collectors of cylindrical batteries, comprising a coating platform 1, on which a plurality of coating units are arranged, each coating unit including a positioning seat 2, a suction head 3, a contour positioning mechanism 4, a transplanting suction and blowing mechanism 5, a slide mechanism 6 and a roller coating mechanism 7; the positioning seat 2 is used to place the current collector 100 to be coated with glue; the suction head 3 is arranged above the positioning seat 2 and is driven by an external manipulator or an external device, and the suction head 3 is used to transport the current collector 100 and place it on the positioning seat 2; the contour positioning mechanism 4, a transplanting suction and blowing mechanism 5, a slide mechanism 6 and a roller coating mechanism 7; the positioning seat 2 is used to place the current collector 100 to be coated with glue; the suction head 3 is arranged above the positioning seat 2 and is driven by an external manipulator or an external device, and the suction head 3 is used to transfer ... The shaped positioning mechanism 4 cooperates with the suction head 3 to position the current collecting piece 100; the transplanting glue suction and blowing mechanism 5 is arranged under the positioning seat 2, and is used to transfer the pre-cut film 102 to the bottom of the current collecting piece 100, and stick the film 102 to the pole ear 101 of the current collecting piece 100 through a lifting action; the slide mechanism 6 is used to drive the roller glue coating mechanism 7, so that the roller in the roller glue coating mechanism 7 moves back and forth and sequentially coats the two ends of the film 102 on the pole ear 101 of the current collecting piece 100, so as to achieve the effect of glue coating on the pole ear 101.

[0051] The rubber-wrapped table 1 has a pad 11 on its surface, and a plurality of positioning seats 2 are installed side by side through holes on the pad 11. An adjustment block 12 is also provided on the outside of the pad 11 for adjusting the horizontal installation position of the pad 11 on the rubber-wrapped table 1;

[0052] A boss 21 having a similar shape to the current collecting piece 100 is provided on the positioning seat 2, and the boss 21 is used to place the current collecting piece 100 to be encapsulated with glue; a through glue groove 22 is opened in the center of the positioning seat 2, and the glue groove 22 crosses the boss 21. Since the glue groove 22 passes through the boss 21 from top to bottom, the glue 102 on the transplanting glue suction and blowing mechanism 5 can be lifted and adhered to the bottom surface of the current collecting piece 100 on the boss 21.

[0053] The suction head 3 includes a first suction part 31 and an L-shaped second suction part 32. The first suction part 31 and the second suction part 32 are integrated into a door frame shape, so that a door opening 33 is formed between the first suction part 31 and the second suction part 32; the first suction part 31 corresponds to the arc end of the suction collector 100, and the second suction part 32 corresponds to the ear end of the suction collector 100, so that the first suction part 31 and the second suction part 32 span the two sides of the film 102 to be coated; when the roller in the roller coating mechanism 7 reciprocates in the door opening 33 between the first suction part 31 and the second suction part 32, the film 102 can be pressed and coated on the ear 101 of the current collector 100.

[0054] The working principle of the suction head 3 is:

[0055] Driven by an external manipulator, the suction head 3 sucks the current collecting piece 100 from the hopper; the first suction part 31 and the second suction part 32 of the suction head 3 correspondingly suck the two ends of the current collecting piece 100, and transfers the current collecting piece 100 to the contoured boss 21 of the positioning seat 2 in a preset direction, and presses the current collecting piece 100, and the current collecting piece 100 is aligned head to tail on the boss 21 of the positioning seat 2.

[0056] The contour positioning mechanism 4 includes a pair of positioning claws 42 whose opening and closing are driven by a positioning cylinder 41, and a limiting iron nail 43 and a limiting iron block 44 that cooperate with each other are arranged between the pair of positioning claws 42; the contour positioning mechanism 4 is installed above the positioning seat 2, and the pair of positioning claws 42 are respectively located on both sides of the boss 21 of the positioning seat 2, and the cylinder 49 controls the opening and closing degree of the positioning claws 42; the limiting iron nail 43 and the limiting iron block 44 can adjust the clamping degree of the pair of positioning claws 42 clamping the boss 21 of the positioning seat 2, so that the positioning claws 42 can be adapted to clamp different types of current collecting plates 100, to avoid excessive clamping that squeezes, deforms and damages the current collecting plates 100.

[0057] Furthermore, each positioning claw 42 has a first clamping portion 421 and a second clamping portion 422, and a recessed clamping groove portion 423 is provided between the first clamping portion 421 and the second clamping portion 422; the first clamping portion 421 of the positioning claw 42 corresponds to the arc end of the current collecting piece 100, the second clamping portion 422 of the positioning claw 42 corresponds to the pole ear end of the current collecting piece 100, and the clamping groove portion 423 of the positioning claw 42 corresponds to the glue through groove 22 of the positioning seat 2, so that the positioning claw 42 cooperates with the positioning seat 2 to form a contoured clamping effect on the current collecting piece 100.

[0058] The working principle of the profiling positioning mechanism 4 is:

[0059] The suction head 3 transfers the current collecting piece 100 and places it on the contoured boss 21 of the positioning seat 2, and presses the current collecting piece 100 vertically; then the positioning cylinder 41 drives the positioning claws 42 to open and clamp the current collecting piece 100 from the side, so that the current collecting piece 100 is accurately positioned on the boss 21 of the positioning seat 2.

[0060] The transplanting glue suction and blowing mechanism 5 includes a transplanting servo motor 51, a coupling 52, a linear module 53 and a drag chain 54 connected in sequence. The linear module 53 is provided with a slide rail lifting frame 55 driven by a lifting cylinder. The slide rail lifting frame 55 is provided with a variable pitch module 56. The variable pitch module 56 is provided with multiple glue suction and blowing heads 57 at intervals. The multiple glue suction and blowing heads 57 correspond one-to-one to the multiple positioning seats 2.

[0061] The transplanting glue suction and blowing mechanism 5 is installed under the positioning seat 2. The transplanting servo motor 51 drives the linear module 53 to move horizontally through the coupling 52. The control air pipe and control circuit in the drag chain 54 follow the linear module 53 to move horizontally; after the linear module 53 moves horizontally into place, the lifting cylinder 21 drives the slide rail lifting frame 55 to move up and down, thereby driving the variable pitch module 56 to move up and down, and finally driving the glue suction and blowing head 57 on the variable pitch module 56 to move up and down.

[0062] Furthermore, the glue suction and blowing head 57 is provided with a built-in air duct, which is connected to the air hole 571 on the top surface of the glue suction and blowing head 57. A docking joint 572 is provided on one side of the glue suction and blowing head 57, and the air pipe deployed in the drag chain 54 is connected to the glue suction and blowing head 57 through the docking joint 572.

[0063] The working principle of the transplanting glue suction and blowing mechanism 5 is:

[0064] The film 102 cut in the previous process is sucked by the glue blowing head 57. The transfer servo motor 51 drives the linear module 53 to move horizontally through the coupling 52, and transfers the glue blowing head 57 and the film 102 to the bottom of the positioning seat 2. Multiple glue blowing heads 57 are aligned with multiple positioning seats 2 one by one. The lifting cylinder drives the variable pitch module 56 to rise and drive the glue blowing head 57 to lift, so that the glue blowing head 57 carries the film 102 upward through the glue slot 22 of the positioning seat 2, and sticks and presses the film 102 to the bottom surface of the tab 101 (at this time, the adhesive side of the film 102 faces up, and the non-adhesive side of the film 102 faces down), ensuring that the film 102 and the current collector 100 are precisely fitted without producing wrinkles and bubbles. Then, the external air source is started, and the glue suction and blowing head 57 is aimed at the upper current collecting sheet 100 to blow air, so that the two ends of the film 102 are vertically tilted, waiting for the roller of the subsequent roller coating mechanism 7 to slide and coat. In this process, the glue suction and blowing head 57 has two working modes: suction and blowing. When suctioning, it absorbs and transports the film 102 into place; after the film 102 is attached to the bottom surface of the tab 101, it switches to blowing, so that the two ends of the film 102 are tilted, preparing for the subsequent roller coating.

[0065] The slide mechanism 6 includes a slide cylinder 61, a slide guide rail 62, a sliding block 63 and a slide limit assembly; the slide cylinder 61 drives the slide connecting plate 65 and the cylinder connecting plate 66 through the floating joint 64, and drives multiple sliding blocks 63 arranged on the slide guide rail 62 through the slide connecting plate 65; each sliding block 63 is installed with a roller rubber coating mechanism 7, and the multiple roller rubber coating mechanisms 7 correspond one-to-one to the multiple positioning seats 2.

[0066] The slide limit assembly includes a slide rail stop block 671, a cylinder stop iron seat 672, a cylinder buffer 673 and a cylinder stop iron 674; the slide rail stop block 671 is arranged at the end of the slide guide rail 62, and limits the slide block 63; the cylinder stop iron seat 672 is arranged on one side of the cylinder connecting plate 66, and the cylinder buffer 673 and the cylinder stop iron 674 are arranged side by side on the cylinder stop iron seat 672; the cylinder stop iron seat 672, the cylinder buffer 673 and the cylinder stop iron 674 jointly limit the stroke of the cylinder connecting plate 66.

[0067] The working principle of the slide mechanism 6 is:

[0068] The slide mechanism 6 is installed above the positioning seat 2. When the suction head 3 presses the current collecting piece 100 onto the positioning seat 2, and the positioning claw 42 in the contour positioning mechanism 4 accurately positions the current collecting piece 100, the slide cylinder 61 drives the floating joint 64, the cylinder connecting plate 66 and the slide connecting plate 65 to slide back and forth, thereby driving the sliding block 63 to reciprocate on the slide guide rail 62, and finally drives the roller rubber wrapping mechanism 7 on the sliding block 63 to cover the rubber 102 on the current collecting piece 100; the slide limit assembly limits and adjusts the stroke of related components.

[0069] The roller rubber coating mechanism 7 includes a wheel seat 71 and a roller 72; the wheel seat 71 is installed on the sliding block 63 of the slide mechanism 6 through a hinge 73 and a guide shaft 74, and the roller 72 is rotatably mounted on the wheel seat 71. The roller 72 is made of a non-stick material; in order to ensure the flatness of the rubber coating and avoid the occurrence of bubbles and wrinkles, a return spring is provided on the guide shaft 74.

[0070] The working principle of the roller 72 rubber coating mechanism 7 is:

[0071] a. The roller 72 glue coating mechanism 7 is installed above the positioning seat 2. Multiple rollers 72 correspond to multiple positioning seats 2 one by one. The sliding block 63 of the slide mechanism 6 drives the roller 72 to make a reciprocating motion to coat the glue 102 on the current collecting sheet 100;

[0072] b. During the encapsulation process, since there is a doorway 33 between the first adsorption portion 31 and the second adsorption portion 32 of the suction head 3, the roller 72 reciprocates in the doorway 33 of the suction head 3, thereby avoiding interference with the suction head 3;

[0073] c. Since the glue suction and blowing head 57 in the transplanting glue suction and blowing mechanism 5 below the positioning seat 2 has a blowing function, the glue suction and blowing head 57 blows air upward so that the two ends of the film 102 attached to the current collecting sheet 100 are blown to vertically tilt;

[0074] d. During the first stroke (outward stroke) of the roller 72, the roller 72 gradually presses the first end of the film 102 onto the current collecting sheet 100 and, because the roller 72 is made of a non-stick material, the roller 72 will not adhere to the film 102;

[0075] e. During the second stroke (return stroke) of the roller 72 , the roller 72 gradually presses the second end of the rubber sheet 102 onto the current collecting sheet 100 , thereby completing the rubber wrapping of the roller 72 onto the current collecting sheet 100 .

[0076] This case is a device for accurately encapsulating the current collector tabs of cylindrical batteries. Its working process or principle is as follows:

[0077] 1. The suction head 3 sucks the current collecting sheet 100 and places it on the positioning seat 2 and presses it tightly;

[0078] 2. The contour positioning mechanism 4 has a positioning claw 42 that contours the current collecting piece 100. The positioning cylinder 41 drives the positioning claw 42 to clamp the current collecting piece 100 on the positioning seat 2 from the side, thereby accurately positioning the current collecting piece 100.

[0079] 3. The glue sucking and blowing head 57 sucks air, absorbs the film 102 and moves horizontally to the bottom of the positioning seat 2. Then the lifting cylinder drives the glue sucking and blowing head 57 to rise, so that the glue sucking and blowing head 57 carries the film 102 through the glue passing groove 22 of the positioning seat 2 and sticks the film 102 to the bottom surface of the current collecting sheet 100;

[0080] 4. The glue sucking and blowing head 57 blows air to blow up the two ends of the film 102 vertically;

[0081] 5. The slide cylinder 61 drives the roller 72 mounted on the sliding block 63 to make reciprocating motion;

[0082] 6. Since the current collecting sheet 100 is still pressed and positioned on the positioning seat 2, the roller 72 will successively cover the first end and the second end of the film 102 onto the tab 101 of the current collecting sheet 100 during the reciprocating motion, completing the encapsulation process.

[0083] Compared with the existing technology, the equipment in this case for accurately wrapping glue on the pole ear of the current collector of cylindrical batteries has a positioning seat provided with a boss similar in shape to the current collector for placing the current collector; each positioning claw in its contour positioning mechanism has a first clamping part and a second clamping part, and a recessed clamping groove part is provided between the first clamping part and the second clamping part; the first clamping part of the positioning claw corresponds to the arc end of the current collector, the second clamping part of the positioning claw corresponds to the pole ear end of the current collector, and the clamping groove part of the positioning claw corresponds to the glue through groove of the positioning seat; the current collector and the pole piece on the current collector are pressed and accurately positioned through the cooperation of the above-mentioned contour positioning seat and the contour positioning claw, and the current collector is accurately positioned in the up, down, left and right directions to ensure that the glue and the current collector are flat and precisely fitted without producing wrinkles and bubbles, thereby ensuring the quality of the wrapping and effectively improving the qualified rate of finished products.

[0084] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A device for accurately coating the collector tabs of cylindrical batteries, comprising a coating platform (1) on which a plurality of coating units are arranged, characterized in that: Each rubber coating unit includes a positioning seat (2), a material suction head (3), a contour positioning mechanism (4), a transplanting rubber suction and blowing mechanism (5), a slide mechanism (6) and a roller rubber coating mechanism (7); The positioning seat (2) is provided with a boss (21) having a similar shape to the current collecting plate (100), and a through-gluing groove (22) is provided in the center of the positioning seat (2), and the through-gluing groove (22) and the boss (21) intersect in a cross shape; The suction head (3) comprises a first suction portion (31) and an L-shaped second suction portion (32); the first suction portion (31) and the second suction portion (32) are integrated into a door frame shape, so that a door hole (33) is formed between the first suction portion (31) and the second suction portion (32); the first suction portion (31) corresponds to the arc end of the suction current collecting piece (100), and the second suction portion (32) corresponds to the tab end of the suction current collecting piece (100); The contour positioning mechanism (4) cooperates with the material suction head (3) to press the current collecting piece (100) and position it on the positioning seat (2); The transplanting glue sucking and blowing mechanism (5) comprises a transplanting servo motor (51), a coupling (52), a linear module (53) and a drag chain (54) connected in sequence, the linear module (53) is provided with a slide rail lifting frame (55) driven by a lifting cylinder, the slide rail lifting frame (55) is provided with a variable pitch module (56), and the variable pitch module (56) is provided with a plurality of glue sucking and blowing heads (57) at intervals, and the plurality of glue sucking and blowing heads (57) correspond one to one to the plurality of positioning seats (2); The glue sucking and blowing head (57) is provided with a built-in air channel, which is communicated with the air hole (571) on the top surface of the glue sucking and blowing head (57); a docking joint (572) is provided on one side of the glue sucking and blowing head (57); and an air pipe deployed in the drag chain (54) is connected to the glue sucking and blowing head (57) through the docking joint (572); The slide mechanism (6) drives the roller rubber coating mechanism (7); The roller rubber coating mechanism (7) comprises a wheel seat (71) and a roller (72); the wheel seat (71) is mounted on a sliding block (63) of a slide mechanism (6) via a hinge (73) and a guide shaft (74); a roller (72) is rotatably mounted on the wheel seat (71); and the roller (72) is made of a non-stick material.

2. The device for accurately encapsulating the current collector tab of a cylindrical battery according to claim 1, characterized in that: The profiling positioning mechanism (4) comprises a pair of positioning claws (42) whose opening and closing are driven by a positioning cylinder (41), and a mutually cooperating limit stop iron nail (43) and a limit stop iron block (44) are arranged between the pair of positioning claws (42); the profiling positioning mechanism (4) is installed above the positioning seat (2), and the pair of positioning claws (42) are respectively located on both sides of the boss (21) of the positioning seat (2).

3. The device for accurately encapsulating the current collector tab of a cylindrical battery according to claim 2, characterized in that: Each positioning claw (42) has a first clamping portion (421) and a second clamping portion (422), and a recessed clamping groove portion (423) is provided between the first clamping portion (421) and the second clamping portion (422); the first clamping portion (421) of the positioning claw (42) corresponds to the arc end of the current collecting piece (100), the second clamping portion (422) of the positioning claw (42) corresponds to the pole ear end of the current collecting piece (100), and the clamping groove portion (423) of the positioning claw (42) corresponds to the glue through groove (22) of the positioning seat (2).

4. The device for accurately encapsulating the current collector tab of a cylindrical battery according to claim 3, characterized in that: The slide mechanism (6) includes a slide cylinder (61), a slide guide rail (62), a sliding block (63) and a slide limit assembly; the slide cylinder (61) drives the slide connecting plate (65) and the cylinder connecting plate (66) through the floating joint (64), and drives multiple sliding blocks (63) arranged on the slide guide rail (62) through the slide connecting plate (65); each sliding block (63) is installed with a roller rubber coating mechanism (7), and the multiple roller rubber coating mechanisms (7) correspond one to one to the multiple positioning seats (2).

5. The device for accurately encapsulating the current collector tab of a cylindrical battery according to claim 4, characterized in that: The slide limiting assembly comprises a slide rail stopper (671), a cylinder iron stopper seat (672), a cylinder buffer (673) and a cylinder iron stopper (674); the slide rail stopper (671) is arranged at the end of the slide rail (62) and limits the slide block (63); the cylinder iron stopper seat (672) is arranged on one side of the cylinder connecting plate (66), and the cylinder buffer (673) and the cylinder iron stopper (674) are arranged side by side on the cylinder iron stopper seat (672).

6. The device for accurately encapsulating the current collector tab of a cylindrical battery according to claim 5, characterized in that: A pad (11) is provided on the surface of the rubber-coated table (1), and a plurality of positioning seats (2) are installed side by side on the pad (11) through holes.

7. The device for accurately encapsulating the current collector tab of a cylindrical battery according to claim 5, characterized in that: An adjustment block (12) is also provided on the outside of the pad (11).

8. The device for accurately encapsulating the current collector tab of a cylindrical battery according to claim 5, characterized in that: A return spring is sleeved on the guide shaft (74).

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