Winding and unwinding device and electrode-sheet manufacturing apparatus

Abstract

A winding and unwinding device, comprising a driving member (30), a transmission shaft (40), a winding and unwinding reel (50) and a pin-tooth transmission pair (20), wherein the pin-tooth transmission pair (20) comprises a driving gear (21) and a driven gear (22); an output end of the driving member (30) is connected to the driving gear (21); the driving gear (21) engages with and is connected to the driven gear (22); the driven gear (22) is connected to one end of the transmission shaft (40); the other end of the transmission shaft (40) is connected to the winding and unwinding reel (50); and the driving gear (21) is a pin gear. The winding and unwinding device can improve the stability of the tension of electrode sheets. Further provided is an electrode-sheet manufacturing apparatus.

Description

Winding and unwinding device and electrode plate manufacturing equipment

[0001] The present patent application claims priority to the utility model patent application No. 202420930132.3, filed on April 30, 2024, entitled "Winding and unwinding device and electrode plate manufacturing equipment", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery production equipment, in particular to a winding and unwinding device and electrode plate manufacturing equipment. BACKGROUND

[0003] In the process of manufacturing electrode plates and performing processes such as slitting and die cutting, a winding and unwinding device is needed to wind the electrode plates and to unwind or wind the electrode plates. In the process of unwinding or winding the electrode plates, the conventional winding and unwinding device cannot guarantee the stability of the electrode plate tension, affecting the processing quality of the electrode plates. SUMMARY

[0004] Therefore, it is necessary to provide a winding and unwinding device and electrode plate manufacturing equipment that can improve the stability of the electrode plate tension.

[0005] A winding and unwinding device, comprising a driving member, a transmission shaft, a winding and unwinding shaft, and a pin gear transmission pair, wherein the pin gear transmission pair comprises a main gear and a driven gear.

[0006] The output end of the driving member is connected to the main gear, the main gear is meshingly connected to the driven gear, one end of the driven gear is connected to the transmission shaft, and the other end of the transmission shaft is connected to the winding and unwinding shaft.

[0007] The main gear is a pin wheel.

[0008] In some embodiments, the main gear is a rolling pin wheel, and the main gear comprises a base body, pin gears, and bearings. The base body is two, and the two base bodies are oppositely and spacedly arranged. The pin gears and the bearings are both multiple. All the pin gears are spacedly arranged around the circumference of the base body, and the pin gears are rotationally connected to the two base bodies through the bearings.

[0009] In some embodiments, the winding and unwinding device further comprises a support seat, and the support seat comprises a support plate, a first side plate, and a second side plate. The first side plate and the second side plate are spacedly arranged at the opposite ends of the support plate.

[0010] The transmission shaft penetrates the first side plate and the second side plate, and has a first end and a second end protruding from two sides of the first side plate and the second side plate away from each other, the driven gear is located on a side of the first side plate away from the second side plate and connected to the first end, and the winding and unwinding shaft is located on a side of the second side plate away from the first side plate and connected to the second end.

[0011] In some embodiments, the driven gear is arranged close to the support plate relative to the main gear.

[0012] In some embodiments, the support seat further comprises a mounting plate mounted on the first side plate and used for assembling the driving member.

[0013] In some embodiments, the winding and unwinding device further comprises a protective sleeve arranged on the support plate and located between the first side plate and the second side plate, the protective sleeve is sleeved on the transmission shaft and arranged spaced apart from the transmission shaft.

[0014] In some embodiments, the winding and unwinding device further comprises a connecting flange arranged on a side of the second side plate away from the first side plate and used for connecting the second end and the winding and unwinding shaft.

[0015] In some embodiments, the connecting flange protrudes from the circumferential surface of the winding and unwinding shaft and the transmission shaft along the radial direction of the winding and unwinding shaft and is used for abutting against the wound pole piece.

[0016] In some embodiments, the first side plate, the second side plate and the support plate are integrally formed.

[0017] A pole piece manufacturing equipment comprising the winding and unwinding device as described in any one of the above embodiments.

[0018] The winding and unwinding device and the pole piece manufacturing equipment described above, by designing the main gear as a pin gear, the contact area between the pin teeth of the pin gear and the teeth of the driven gear is reduced during the engagement and transmission of the pin gear and the driven gear, so that the sliding friction between the pin teeth of the pin gear and the teeth of the driven gear is reduced. In this case, the transmission efficiency and stability are improved to some extent, so that the driving member can accurately control the winding and unwinding shaft to unwind or wind the pole piece, the pole piece tension is stable, and the pole piece processing quality is high. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a structural schematic view of a winding and unwinding device in an embodiment of the present application.

[0020] Fig. 2 is a structural schematic view of a pin gear transmission pair in the winding and unwinding device shown in Fig. 1.

[0021] Fig. 1 is a winding and unwinding device; 10 is a support seat; 20 is a pin gear transmission pair; 30 is a driving member; 40 is a transmission shaft; 50 is a winding and unwinding shaft; 60 is a protective sleeve; 70 is a connecting flange; 11 is a support plate; 12 is a first side plate; 13 is a second side plate; 14 is a mounting plate; 21 is a main gear; 211 is a base body; 212 is a pin gear; 213 is a bearing; 22 is a driven gear. DETAILED DESCRIPTION

[0022] In order to make the above objectives, features and advantages of the present application more clear and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a sufficient understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0025] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the present application, unless specifically stated and limited otherwise, a first feature is "on" or "under" a second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal height than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0028] At present, from the development of market situation, the application of battery is more and more widely. The battery is not only applied to the energy storage power supply system of water power, fire power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of battery, the demand of its market is also increasing.

[0029] The battery includes an electrode sheet. In the manufacturing and slitting, die cutting and other process flow of the electrode sheet, a take-up and pay-off device is needed to wind the electrode sheet and implement pay-off or take-up of the electrode sheet. In the process of pay-off or take-up of the electrode sheet, the conventional take-up and pay-off device cannot guarantee the stability of the electrode sheet tension, affecting the processing quality of the electrode sheet.

[0030] The applicant found that one of the reasons why the take-up and pay-off device cannot guarantee the stability of the electrode sheet tension is that the speed reduction gear pair in the take-up and pay-off device for transmitting the speed of the driving member to the take-up and pay-off shaft is formed by the meshing of a spur gear and a helical gear. When the spur gear and the helical gear mesh and rotate, there is sliding between the spur gear and the helical gear, affecting the power transmission efficiency and transmission stability, and further causing the driving member to be unable to accurately control the pay-off or take-up of the electrode sheet by the take-up and pay-off shaft, the electrode sheet tension is unstable, and the processing quality of the electrode sheet is affected.

[0031] Please refer to Fig. 1 and Fig. 2, in order to alleviate the problem of unstable unwinding or winding tension of the pole piece, the applicant designs a winding and unwinding device 1 after in-depth research, the winding and unwinding device 1 includes a driving member 30, a transmission shaft 40, a winding and unwinding shaft 50 and a pin gear transmission pair 20, the pin gear transmission pair 20 includes a main gear 21 and a driven gear 22; the output end of the driving member 30 is connected to the main gear 21, the main gear 21 is connected in mesh with the driven gear 22, the driven gear 22 is connected to one end of the transmission shaft 40, and the other end of the transmission shaft 40 is connected to the winding and unwinding shaft 50; wherein the main gear 21 is a pin wheel.

[0032] Among them, the winding and unwinding device 1 can be a winding device, or an unwinding device, or it can also be a winding and unwinding integrated device.

[0033] Among them, the driving member 30 can be a servo motor, a motor and the like, which is not limited here.

[0034] In this application, the pin gear transmission pair 20 is arranged between the driving member 30 and the transmission shaft 40 as a reduction gear pair, and the rotation speed of the driving member 30 is reduced and then transmitted to the transmission shaft 40, and then the reduced rotation speed is transmitted to the winding and unwinding shaft 50 through the transmission shaft 40, so as to realize the unwinding or winding of the pole piece.

[0035] By designing the main gear 21 as a pin wheel, the pin wheel has a pin gear 212, and the contact area between the pin gear 212 of the pin wheel and the teeth of the driven gear 22 is reduced during the meshing and transmission of the pin wheel and the driven gear 22, so that the sliding friction between the pin gear 212 of the pin wheel and the teeth of the driven gear 22 is reduced. In this case, the transmission efficiency and transmission stability are improved to some extent, and then the driving member 30 can accurately control the winding and unwinding shaft 50 to unwind or wind the pole piece, the pole piece tension is stable, and the pole piece processing quality is high. Among them, the main gear 21 can be a fixed pin wheel, a rolling pin wheel and the like, which can be set as needed.

[0036] For example, taking the main gear 21 as a fixed pin wheel, the fixed pin wheel includes a base body 211 and a pin gear 212, the base body 211 is two, and the two base bodies 211 are oppositely and spacedly arranged, the pin gear 212 is a plurality of, all the pin gears 212 are spacedly arranged around the circumference of the base body 211, and the pin gear 212 is fixedly connected with the two base bodies 211.

[0037] For example, taking the main gear 21 as a rolling pin wheel, the rolling pin wheel includes a base body 211, a pin gear 212 and a bearing 213, the base body 211 is two, and the two base bodies 211 are oppositely and spacedly arranged, the pin gear 212 and the bearing 213 are a plurality of, all the pin gears 212 are spacedly arranged around the circumference of the base body 211, and the pin gear 212 is rotatably connected with the two base bodies 211 through the bearing 213.

[0038] For the pin gear 212 of the pin gear wheel, the pin gear 212 can also rotate relative to the base 211, and in the process of meshing and transmission between the pin gear wheel and the driven gear 22, the pin gear 212 of the pin gear wheel rolls on the tooth surface of the driven gear 22, so that there is no sliding friction between the pin gear and the tooth of the driven gear 22. In this case, the transmission efficiency of the pin gear transmission pair 20 is high and the transmission is stable, further improving the accuracy of the driving member 30 in controlling the unwinding or winding of the winding shaft 50, and the tension of the pole piece is more stable.

[0039] Please refer to Fig. 1 again, in some optional embodiments of the present application, the winding and unwinding device 1 further comprises a support seat 10, the support seat 10 comprises a support plate 11, a first side plate 12 and a second side plate 13, the first side plate 12 and the second side plate 13 are arranged at the opposite ends of the support plate 11; the transmission shaft 40 penetrates the first side plate 12 and the second side plate 13, and is rotatably connected with the first side plate 12 and the second side plate 13 through bearing components such as ball bearings, deep groove ball bearings and the like. In addition, the transmission shaft 40 has a first end and a second end protruding from the two sides of the first side plate 12 and the second side plate 13 away from each other, the driven gear 22 is located on the side of the first side plate 12 away from the second side plate 13, and is connected to the first end of the transmission shaft 40, and the winding and unwinding shaft 50 is located on the side of the second side plate 13 away from the first side plate 12, and is connected to the second end of the transmission shaft 40.

[0040] For example, the first side plate 12, the second side plate 13 and the support plate 11 are integrally formed, which is simple to manufacture and convenient to form. Of course, in some other embodiments, the first side plate 12, the second side plate 13 and the support plate 11 can also be formed separately and connected by welding, gluing or the like.

[0041] In the present embodiment, in the arrangement direction of the first side plate 12 and the second side plate 13, the side of the first side plate 12 away from the second side plate 13, between the first side plate 12 and the second side plate 13, and the side of the second side plate 13 away from the first side plate 12 are all installed with components. Therefore, the components of the winding and unwinding device 1 can be arranged more evenly along the arrangement direction of the first side plate 12 and the second side plate 13, the weight of the winding and unwinding device 1 is evenly distributed, the stability of installation is good, and the winding and unwinding device 1 is more solid and reliable

[0042] In some optional embodiments of the present application, the driven gear 22 is arranged close to the support plate 11 relative to the main gear 21.

[0043] Since the pin-tooth transmission pair 20 is a reduction gear pair, the driven gear 22 is larger in diameter than the main gear 21. Generally, the driven gear 22 with a larger diameter is also heavier than the main gear 21 with a smaller diameter. The driven gear 22 is arranged close to the support plate 11 relative to the main gear 21, so that the weight of the take-up and pay-off device 1 is concentrated near the support plate 11, and the support plate 11 can be stably installed on the ground, a wall surface, or a rack of a pole piece manufacturing equipment, and the like, thereby facilitating the stability of the installation of the take-up and pay-off device 1.

[0044] In some optional embodiments of the present application, the support base 10 further comprises a mounting plate 14, which is mounted on the first side plate 12 and used to assemble the driving member 30.

[0045] For example, the mounting plate 14 is mounted on the first side plate 12, and the mounting height of the mounting plate 14 is higher than that of the first side plate 12. The driving member 30 is located between the first side plate 12 and the second side plate 13 and is mounted on one side of the mounting plate 14. The main gear 21 is mounted on the side of the mounting plate 14 away from the driving member 30, and is located on the same side of the first side plate 12 as the driven gear 22.

[0046] The mounting plate 14 is arranged to facilitate the expansion of the mounting space and the mounting position of the support base 10, and to ensure that the driving member 30 and the pin-tooth transmission pair 20 can be effectively mounted.

[0047] In some optional embodiments of the present application, the take-up and pay-off device 1 further comprises a protective sleeve 60, which is arranged on the support plate 11 and located between the first side plate 12 and the second side plate 13. The protective sleeve 60 is sleeved on the transmission shaft 40 and is arranged in a spaced manner with the transmission shaft 40. The arrangement of the protective sleeve 60 can protect the transmission shaft 40 and isolate the transmission shaft 40 from the outside environment as much as possible, thereby reducing the possibility of contact between the transmission shaft 40 and the outside water vapor and other substances, and facilitating the extension of the service life of the transmission shaft 40. In addition, the protective sleeve 60 is arranged in a spaced manner with the transmission shaft 40, which can also avoid friction between the protective sleeve 60 and the transmission shaft 40, thereby reducing the wear of the protective sleeve 60 and the transmission shaft 40, and facilitating the extension of the service life of the protective sleeve 60 and the transmission shaft 40.

[0048] In some optional embodiments of the present application, the take-up and pay-off device 1 further comprises a connecting flange 70, which is arranged on the side of the second side plate 13 away from the first side plate 12 and used to connect the second end of the transmission shaft 40 and the take-up and pay-off shaft 50. The use of the connecting flange 70 to connect the transmission shaft 40 and the take-up and pay-off shaft 50 has high reliability, thereby ensuring the stability of power transmission.

[0049] In some optional embodiments of the present application, the connecting flange 70 protrudes radially along the winding and unwinding shaft 50 and the circumferential side of the transmission shaft 40, and is used to abut against the wound pole piece. Therefore, the connecting flange 70 can be used to position and limit the wound pole piece, reducing the risk of the wound pole piece sliding randomly along the axial direction of the winding and unwinding shaft 50, so that the two ends of the wound pole piece are more uniform.

[0050] The present application also provides a pole piece manufacturing device comprising the winding and unwinding device 1 described in any one of the above embodiments, which is used to unwind or wind the pole piece during the process of pole piece slitting or die cutting, etc.

[0051] The pole piece manufacturing device in the present application has the effects of the above-mentioned embodiments, and thus will not be described here.

[0052] The winding and unwinding device 1 and the pole piece manufacturing device described above, by designing the main gear 21 as a pin gear, the contact area between the pin teeth 212 of the pin gear and the teeth of the driven gear 22 is reduced during the process of the pin gear meshing with and driving the driven gear 22, so that the sliding friction between the pin teeth 212 of the pin gear and the teeth of the driven gear 22 is reduced. In this case, the transmission efficiency and stability are improved to some extent, so that the driving member 30 can accurately control the winding and unwinding shaft 50 to unwind or wind the pole piece, the pole piece tension is stable, and the pole piece processing quality is high.

[0053] The technical features of the above-mentioned embodiments can be combined in any way. In order to make the description simple, not all possible combinations of the technical features in the above-mentioned embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0054] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A roll handling apparatus, characterized by The winding and unwinding device comprises a driving member (30), a transmission shaft (40), a winding and unwinding shaft (50) and a pin gear transmission pair (20), wherein the pin gear transmission pair (20) comprises a main gear (21) and a driven gear (22); The output end of the driving member (30) is connected with the main gear (21), the main gear (21) is connected with the driven gear (22) in a meshing mode, the driven gear (22) is connected with one end of the transmission shaft (40), and the other end of the transmission shaft (40) is connected with the winding and unwinding shaft (50). The main gear (21) is a pin wheel.

2. A roll-fed apparatus according to claim 1, wherein The main gear (21) is a rolling pin wheel, and the main gear (21) comprises a base body (211), pin gears (212) and bearings (213), the base body (211) is two, and the two base bodies (211) are oppositely and spacedly arranged, the pin gears (212) and the bearings (213) are multiple, all the pin gears (212) are spacedly arranged around the circumference of the base body (211), and the pin gears (212) are rotationally connected with the two base bodies (211) through the bearings (213).

3. The roll-fed apparatus of claim 1, wherein, The winding and unwinding device further comprises a support seat (10), the support seat (10) comprises a support plate (11), a first side plate (12) and a second side plate (13), and the first side plate (12) and the second side plate (13) are spacedly arranged at two opposite ends of the support plate (11). The transmission shaft (40) penetrates through the first side plate (12) and the second side plate (13), and has a first end and a second end which protrude from two sides of the first side plate (12) and the second side plate (13) away from each other, the driven gear (22) is located on a side of the first side plate (12) away from the second side plate (13) and connected with the first end, and the winding and unwinding shaft (50) is located on a side of the second side plate (13) away from the first side plate (12) and connected with the second end.

4. A roll-fed apparatus according to claim 3, wherein The driven gear (22) is arranged close to the support plate (11) relative to the main gear (21).

5. The roll-fed apparatus of claim 3, wherein, The support seat (10) further comprises a mounting plate (14) mounted on the first side plate (12) and used for assembling the driving member (30).

6. The roll-fed apparatus of claim 3, wherein, The winding and unwinding device further comprises a protective sleeve (60) arranged on the support plate (11) and located between the first side plate (12) and the second side plate (13), the protective sleeve (60) is sleeved on the transmission shaft (40) and spacedly arranged with the transmission shaft (40).

7. The roll-fed apparatus of claim 3, wherein, The winding and unwinding device further comprises a connecting flange (70) arranged on a side of the second side plate (13) away from the first side plate (12) and used for connecting the second end and the winding and unwinding shaft (50).

8. A roll-fed apparatus according to claim 7, wherein The connecting flange (70) protrudes from the circumferential side of the winding and unwinding shaft (50) and the transmission shaft (40) along the radial direction of the winding and unwinding shaft (50) and is used for abutting against the wound pole piece.

9. The roll-fed apparatus of claim 3, wherein, The first side plate (12), the second side plate (13) and the support plate (11) are integrally formed.

10. A pole piece manufacturing apparatus comprising the winding and unwinding device according to any one of claims 1 to 9.

Images