Pole piece winding device

Abstract

The utility model relates to the technical field of battery production, in particular to a pole piece winding device. The device comprises a pole piece unwinding mechanism, a winding needle, an image detection mechanism and an anti-fluctuation mechanism, the pole piece unwinding mechanism conveys a pole piece material belt to the winding needle, and the winding needle is used for winding the pole piece material belt to form a battery cell; the image detection mechanism is used for shooting an image of the pole piece material belt; the anti-fluctuation mechanism comprises a movable roller and a driving assembly, and the driving assembly is used for driving the movable roller to move in the direction away from or close to the pole piece material belt, so that the movable roller and the pole piece material belt are arranged at intervals or the movable roller abuts against the surface of the pole piece material belt. When the image detection mechanism carries out shooting, the driving assembly drives the movable roller to move in the direction close to the pole piece material belt, so that the movable roller abuts against the surface of the pole piece material belt, fluctuation of the pole piece material belt is reduced, and the shooting effect of the image detection mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a pole piece winding device. Background Art

[0002] During the process of battery production, a pole piece winding device is required to wind the pole piece and the separator into an electric core, and during the winding process, a camera is used to detect whether there are defects in the pole piece (such as pole piece wrinkling, tab flipping, etc.) and whether the pole piece and the separator are aligned.

[0003] Since the pole piece inevitably fluctuates during the process of entering the winding, this results in unstable camera photographing effects, and the captured images are prone to being blurred, thus affecting the detection effect. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a pole piece winding device to solve the technical problem in the prior art that the pole piece is prone to fluctuate and affect the photographing effect.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pole piece winding device includes a pole piece unwinding mechanism, a winding needle, an image detection mechanism and an anti-fluctuation mechanism;

[0007] The pole piece unwinding mechanism conveys a pole piece tape to the winding needle, and the winding needle is used to wind the pole piece tape to form an electric core;

[0008] The image detection mechanism is used to capture an image of the pole piece tape;

[0009] The anti-fluctuation mechanism includes a movable roller and a driving component, and the driving component is used to drive the movable roller to move in a direction away from or close to the pole piece tape, so that the movable roller is spaced from the pole piece tape or the movable roller abuts against the surface of the pole piece tape.

[0010] Further, it further includes a separator unwinding mechanism, and the separator unwinding mechanism conveys a separator tape to the winding needle;

[0011] The movable roller is arranged on a side of the separator tape away from the pole piece tape, and the outer peripheral surface of the movable roller is in rolling contact with the surface of the separator tape.

[0012] Further, one end of the movable roller is installed on the driving component, and the other end of the movable roller is arranged in a suspended manner.

[0013] Further, the separator unwinding mechanism further includes a fixed roller group, and the fixed roller group includes at least one fixed roller in rolling contact with the surface of the separator tape;

[0014] The movable roller is arranged downstream of the fixed roller group.

[0015] Furthermore, the image detection mechanism and the movable roller are arranged opposite to each other and are respectively arranged on both sides of the pole piece strip.

[0016] Furthermore, the driving assembly includes a lead screw, a movable frame screwed on the lead screw, and a driving member for driving the lead screw to rotate, and the movable roller is installed on the movable frame.

[0017] Furthermore, the anti-fluctuation mechanism further includes at least one guiding structure, and each guiding structure includes a guide rail and a slider slidably arranged on the guide rail, and the movable frame is connected to the guide rail or the slider.

[0018] Furthermore, a first mounting surface and a second mounting surface perpendicular to each other are arranged on the movable frame, and the guide rails are respectively installed on the first mounting surface and the second mounting surface.

[0019] Furthermore, the anti-fluctuation mechanism further includes a mounting frame;

[0020] One end of the lead screw is connected to the driving member, and the other end of the lead screw is rotatably connected to the mounting frame;

[0021] The driving member is installed on the mounting frame.

[0022] Furthermore, an auxiliary mechanism is further included and is arranged on the side of the pole piece strip away from the movable roller, and the auxiliary mechanism provides a force towards the pole piece strip to the pole piece strip.

[0023] Advantages of the present utility model:

[0024] The pole piece winding device provided by the present utility model includes a pole piece unwinding mechanism, a winding needle, an image detection mechanism, and an anti-fluctuation mechanism; the pole piece unwinding mechanism conveys a pole piece strip to the winding needle, and the winding needle is used for winding the pole piece strip to form an electric core; the image detection mechanism is used for photographing an image of the pole piece strip; the anti-fluctuation mechanism includes a movable roller and a driving assembly, and the driving assembly is used for driving the movable roller to move in a direction away from or close to the pole piece strip, so that the movable roller is arranged at an interval from the pole piece strip or the movable roller abuts against the surface of the pole piece strip.

[0025] The usage method of the above device is as follows: When the pole piece strip is fed and the image detection mechanism does not take pictures, the driving component drives the movable roller to move away from the pole piece strip, so that the movable roller is arranged at an interval from the pole piece strip. At this time, since there is a gap between the movable roller and the pole piece strip, the feeding of the pole piece strip will not be blocked, and the problem that the head of the pole piece strip hits the movable roller during feeding, resulting in powder dropping or tape flying of the pole piece, is avoided, which is convenient for the feeding of the pole piece strip; When the image detection mechanism takes pictures, the driving component drives the movable roller to move towards the pole piece strip, so that the movable roller abuts against the surface of the pole piece strip, thereby reducing the fluctuation of the pole piece strip and improving the shooting effect of the image detection mechanism. Description of the Drawings

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of a pole piece winding device provided by an embodiment of the present invention;

[0028] Figure 2 It is a front view of an anti-fluctuation mechanism provided by an embodiment of the present invention;

[0029] Figure 3 It is a three-dimensional view of an anti-fluctuation mechanism provided by an embodiment of the present invention from one angle;

[0030] Figure 4 It is a three-dimensional view of an anti-fluctuation mechanism provided by an embodiment of the present invention from another angle;

[0031] Figure 5 It is a three-dimensional view of a movable frame provided by an embodiment of the present invention from one angle;

[0032] Figure 6 It is a three-dimensional view of a movable frame provided by an embodiment of the present invention from another angle.

[0033] Reference Signs:

[0034] 11 - Pole piece strip;

[0035] 2 - Winding needle;

[0036] 3 - Image detection mechanism;

[0037] 4 - Anti - fluctuation mechanism; 41 - Movable roller; 42 - Driving assembly; 421 - Lead screw; 422 - Movable frame; 4221 - Nut; 4222 - Connecting block; 4223 - Guide rail mounting block; 4224 - Blocking structure; 423 - Driving part; 43 - Guiding structure; 431 - Guide rail; 432 - Slide block; 44 - Mounting frame;

[0038] 51 - Diaphragm tape; 52 - Fixed roller;

[0039] 61 - Auxiliary mechanism. Specific embodiments

[0040] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0041] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] It should be noted that in the description of the present utility model, the terms "connection" and "installation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or connected through an intermediate medium; it can be a mechanical connection, or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] Since the pole piece is inevitably fluctuated during the process of being wound, which leads to unstable camera shooting effect and the captured images are prone to be blurred, thus affecting the detection effect.

[0044] Based on this, the embodiments of the present utility model provide a pole piece winding device, referring to Figure 1 , the device includes a pole piece unwinding mechanism, a winding needle 2, an image detection mechanism 3 and an anti - fluctuation mechanism 4;

[0045] The pole piece unwinding mechanism conveys the pole piece tape 11 to the winding needle 2, and the winding needle 2 is used to wind the pole piece tape 11 to form an electric core;

[0046] The image detection mechanism 3 is used to capture images of the pole piece strip 11;

[0047] The anti-fluctuation mechanism 4 includes a movable roller 41 and a driving component 42. The driving component 42 is used to drive the movable roller 41 to move in a direction away from or close to the pole piece strip 11, so that the movable roller 41 is spaced from the pole piece strip 11 or the movable roller 41 abuts against the surface of the pole piece strip 11.

[0048] In this embodiment, preferably, the driving component 42 drives the movable roller 41 to move linearly. In other embodiments, the driving component 42 can also drive the movable roller 41 to move in any manner through other linkage members. For example, the movable roller 41 is driven by a connecting rod, the movable roller 41 is driven to swing, etc. As long as the position switching of the movable roller 41 between being spaced from the pole piece strip 11 and abutting against the surface of the pole piece strip 11 can be realized, it belongs to the protection scope of the present utility model.

[0049] In the above structure, the pole piece strip 11 can be an anode pole piece strip or a cathode pole piece strip. Figure 1 In the illustrated embodiment, the anode pole piece strip is taken as an example.

[0050] The usage mode of the above device is as follows: when the pole piece strip 11 is fed and the image detection mechanism 3 does not capture images, the driving component 42 drives the movable roller 41 to move in a direction away from the pole piece strip 11, so that the movable roller 41 is spaced from the pole piece strip 11. At this time, since there is a gap between the movable roller 41 and the pole piece strip 11, the feeding of the pole piece strip 11 will not be blocked, and the problem that the head of the pole piece strip 11 collides with the movable roller 41 during feeding, resulting in powder dropping or tape flying of the pole piece, is avoided, facilitating the feeding of the pole piece strip 11; when the image detection mechanism 3 captures images, the driving component 42 drives the movable roller 41 to move in a direction close to the pole piece strip 11, so that the movable roller 41 abuts against the surface of the pole piece strip 11, thereby reducing the fluctuation of the pole piece strip 11 and improving the shooting effect of the image detection mechanism 3.

[0051] Furthermore, the pole piece winding device further includes a separator unwinding mechanism, and the separator unwinding mechanism conveys a separator strip 51 to the winding needle 2;

[0052] The movable roller 41 is arranged on the side of the separator strip 51 away from the pole piece strip 11, and the outer peripheral surface of the movable roller 41 is in rolling contact with the surface of the separator strip 51.

[0053] In the above structure, the separator strip 51 can be an upper separator strip located outside the anode pole piece strip or a lower separator strip located outside the cathode pole piece strip. Figure 1 In the illustrated embodiment, the upper separator strip is taken as an example.

[0054] When the image detection mechanism 3 is shooting, the driving component 42 drives the active roller 41 to move in the direction close to the pole piece material strip 11, and the active roller 41 pushes the diaphragm material strip 51 to move until the diaphragm material strip 51 is attached to the outer surface of the pole piece material strip 11. At this time, the diaphragm material strip 51 and the pole piece material strip 11 have a contact surface, and the surface contact further reduces the fluctuation of the pole piece material strip 11, thereby further improving the shooting effect of the image detection mechanism 3. In addition, since the outer peripheral surface of the active roller 41 is rollingly attached to the surface of the diaphragm material strip 51, the active roller 41 also plays the function of guiding and tightening the diaphragm material strip 51.

[0055] On the basis of the above structure, the membrane unwinding mechanism further includes a fixed roller group, and the fixed roller group includes at least one fixed roller 52 that rolls and fits with the surface of the membrane strip 51;

[0056] The movable roller 41 is arranged downstream of the fixed roller group.

[0057] Continue to refer to Figure 1 The movable roller 41 is arranged between the winding needle 2 and the fixed roller group; when the movable roller 41 is against the surface of the pole piece strip 11, the diaphragm strip 51 located between the movable roller 41 and the winding needle 2 is attached to the outer surface of the pole piece strip 11.

[0058] Figure 1 The area indicated by the dotted line is the shooting field of view of the image detection mechanism 3; Figure 1 The image detection mechanism 3 and the movable roller 41 are arranged opposite to each other and are respectively arranged on both sides of the pole piece strip 11, that is, the movable roller 41 is opposite to the shooting area of ​​the image detection mechanism 3, so that the movable roller 41 can be pressed against the pole piece strip 11 located in the shooting area, further improving the shooting effect.

[0059] Furthermore, the pole piece winding device also includes an auxiliary mechanism 61, which is arranged on the side of the pole piece strip 11 away from the active roller 41, and provides a force towards the pole piece strip 11 to the pole piece strip 11. Such an arrangement can prevent the end of the pole piece strip 11 from curling and improve the alignment of the pole piece strip 11 and the diaphragm strip 51. The auxiliary mechanism 61 can be set as a push plate, which can be driven close to or away from the pole piece strip 11, and provides a force towards the pole piece strip 11 to the pole piece strip 11, and the edge of the push plate close to the feeding end of the pole piece strip 11 is provided with a folding surface for facilitating the feeding of the pole piece strip 11. In other embodiments, the auxiliary mechanism 61 can also be set as a blow block to provide a force towards the pole piece strip 11 to the pole piece strip 11. The specific structure of the auxiliary mechanism 61 is not limited.

[0060] Reference Figure 2 and Figure 3, one end of the movable roller 41 is installed on the driving assembly 42, and the other end of the movable roller 41 is suspended. This structure facilitates the disassembly of the anti-fluctuation mechanism 4, and the staff can disassemble and assemble the anti-fluctuation mechanism 4 from one side of the device.

[0061] In this embodiment, the driving assembly 42 includes a lead screw 421, a movable frame 422 screwed on the lead screw 421, and a driving member 423 for driving the rotation of the lead screw 421; the movable roller 41 is installed on the movable frame 422. During operation, the driving member 423 drives the movable roller 41 to move through the lead screw 421 and the movable frame 422.

[0062] In this embodiment, the driving member 423 is a servo motor. Optionally, the output shaft of the driving member 423 can be connected to the lead screw 421 through a coupling, a gear, a pulley, etc.

[0063] Refer to Figure 3 and Figure 4 , the anti-fluctuation mechanism 4 further includes at least one guiding structure 43, and each guiding structure 43 includes a guide rail 431 and a slider 432 slidably arranged on the guide rail 431; the movable frame 422 is connected to the guide rail 431 or the slider 432. Through at least one guiding structure 43, the moving direction of the movable roller 41 can be restricted, so that the movable roller 41 can move smoothly along a predetermined track.

[0064] Furthermore, a blocking structure 4224 for preventing the slider 432 from disengaging from the guide rail 431 is arranged on the movable frame 422.

[0065] On the basis of the above structure, a first mounting surface and a second mounting surface perpendicular to each other are arranged on the movable frame 422, and the guide rails 431 are respectively installed on the first mounting surface and the second mounting surface. Specifically, a guide rail 431 is fixedly installed at the lower end (i.e., on the first mounting surface) and one side (i.e., on the second mounting surface) of the movable frame 422. The use of double guide rails can improve the force-bearing strength of the structure and avoid the phenomenon of the movable roller 41 shaking; the double guide rails are arranged vertically, making the overall structure of the mechanism compact and the force-bearing effect of the guide rail 431 better.

[0066] In this embodiment, the anti-fluctuation mechanism 4 further includes a mounting frame 44;

[0067] One end of the lead screw 421 is connected to the driving member 423, and the other end of the lead screw 421 is rotatably connected to the mounting frame 44;

[0068] The driving member 423 and each slider 432 are both installed on the mounting frame 44.

[0069] Through the mounting frame 44, the anti-fluctuation mechanism 4 can be formed into a whole, which is convenient for disassembly, removal and placement from the whole machine.

[0070] Refer toFigure 5 and Figure 6 , the movable frame 422 includes a nut 4221, a connecting block 4222 and a guide rail mounting block 4223; wherein: the nut 4221 is screwed onto the lead screw 421. In this embodiment, the nut 4221 is specifically a ball nut; the connecting block 4222 is connected to the nut 4221; the guide rail mounting block 4223 is connected to the connecting block 4222, and the first mounting surface and the second mounting surface are provided on the guide rail mounting block 4223.

[0071] Specifically, the connecting block 4222 is sleeved on the nut 4221, and the two are fixed by fasteners such as screws; the connecting block 4222 is fixed to the abdomen of the guide rail mounting block 4223 by fasteners; the movable roller 41 is installed at one end of the guide rail mounting block 4223. During operation, the lead screw 421 drives the nut 4221 to move, and then drives the movable roller 41 to move through the connecting block 4222 and the guide rail mounting block 4223.

[0072] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pole piece winding device, characterized in that: It comprises a pole piece unwinding mechanism, a winding needle (2), an image detection mechanism (3) and an anti-fluctuation mechanism (4); The electrode sheet unwinding mechanism conveys the electrode sheet strip (11) to the winding needle (2), and the winding needle (2) is used to wind the electrode sheet strip (11) to form a battery core; The image detection mechanism (3) is used to capture an image of the pole piece strip (11); The anti-wave mechanism (4) comprises a movable roller (41) and a driving assembly (42), wherein the driving assembly (42) is used to drive the movable roller (41) to move in a direction away from or close to the pole piece strip (11), so that the movable roller (41) is spaced apart from the pole piece strip (11) or the movable roller (41) is pressed against the surface of the pole piece strip (11).

2. The pole piece winding device according to claim 1, characterized in that: It also includes a diaphragm unwinding mechanism, which transports a diaphragm material strip (51) to the winding needle (2); The movable roller (41) is arranged on a side of the diaphragm material strip (51) away from the pole piece material strip (11), and the outer peripheral surface of the movable roller (41) is rollingly fitted with the surface of the diaphragm material strip (51).

3. The pole piece winding device according to claim 2, characterized in that: One end of the movable roller (41) is mounted on the driving assembly (42), and the other end of the movable roller (41) is suspended.

4. The pole piece winding device according to claim 2, characterized in that: The diaphragm unwinding mechanism further comprises a fixed roller group, wherein the fixed roller group comprises at least one fixed roller (52) which is in rolling contact with the surface of the diaphragm material strip (51); The movable roller (41) is arranged downstream of the fixed roller group.

5. The pole piece winding device according to claim 1, characterized in that: The image detection mechanism (3) and the movable roller (41) are arranged opposite to each other and are respectively arranged on both sides of the pole piece strip (11).

6. The pole piece winding device according to any one of claims 1 to 5, characterized in that: The driving assembly (42) comprises a screw rod (421), a movable frame (422) screwed onto the screw rod (421), and a driving member (423) for driving the screw rod (421) to rotate; the movable roller (41) is mounted on the movable frame (422).

7. The pole piece winding device according to claim 6, characterized in that: The anti-wave mechanism (4) further comprises at least one guide structure (43), each of the guide structures (43) comprising a guide rail (431) and a slider (432) slidably arranged on the guide rail (431); the movable frame (422) is connected to the guide rail (431) or the slider (432).

8. The pole piece winding device according to claim 7, characterized in that: The movable frame (422) is provided with a first mounting surface and a second mounting surface which are perpendicular to each other, and the first mounting surface and the second mounting surface are respectively provided with a guide rail (431).

9. The pole piece winding device according to claim 6, characterized in that: The anti-fluctuation mechanism (4) further comprises a mounting frame (44); One end of the screw rod (421) is connected to the driving member (423), and the other end of the screw rod (421) is rotatably connected to the mounting frame (44); The driving member (423) is mounted on the mounting frame (44).

10. The pole piece winding device according to claim 1, characterized in that: It also includes an auxiliary mechanism (61) arranged on the side of the pole piece strip (11) away from the movable roller (41), and the auxiliary mechanism (61) provides a force acting on the pole piece strip (11) towards the pole piece strip (11).

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