Material belt driving mechanism and battery cell winding equipment

Abstract

The utility model discloses a material belt driving mechanism and battery cell winding equipment, and the material belt driving mechanism comprises an adsorption roller which is provided with an adsorption hole, and the adsorption hole is used for adsorbing a material belt; and the driving part can drive the adsorption roller to rotate so as to convey the material belt. According to the invention, the material belt driving mechanism can be prevented from puncturing the material belt due to dust accumulation in the working process, and the yield of battery cells is improved.

Description

Technical Field

[0001] This application relates to the field of battery production equipment, specifically to a material strip driving mechanism and a cell winding device. Background Technology

[0002] In battery manufacturing, before the material strip (such as separator or electrode sheet) is wound onto the winding needle to form a cell, a material strip drive mechanism is needed to drive the material strip to feed it to the winding needle. Existing material strip drive mechanisms use rotating rollers to drive the material strip. To prevent relative slippage between the material strip and the rollers as it passes through, a pressure roller is used to press the material strip firmly against the rollers. This ensures that the linear velocity of the material strip as it passes through the drive mechanism is equal to the linear velocity of the roller's rotation. However, when the pressure roller presses the material strip, powder on the strip (such as ceramic powder from the separator) adheres to the surface of the pressure roller and the roller itself. Accumulated dust can easily form sharp protrusions that puncture the material strip, resulting in a reduced cell yield. Utility Model Content

[0003] One objective of this application is to provide a new technical solution for a strip drive mechanism and a cell winding device.

[0004] To achieve the above objectives, according to a first aspect of this application, a material belt driving mechanism is provided, comprising: an adsorption roller having adsorption holes for adsorbing material belt; and a driving member capable of driving the adsorption roller to rotate to convey the material belt.

[0005] Alternatively, the material belt driving mechanism may further include: a negative pressure component and a fixed base, wherein the negative pressure component is fixedly connected to the fixed base, and the adsorption roller is rotatably sleeved on the negative pressure component.

[0006] Alternatively, the negative pressure component is provided with a negative pressure channel and a recess, the recess having a through hole communicating with the negative pressure channel, the recess forming a negative pressure cavity with the inner surface of the adsorption roller, and the adsorption hole communicating with the negative pressure cavity.

[0007] Alternatively, the negative pressure element includes:

[0008] A fixed shaft is provided with the negative pressure channel and a first through hole, the first through hole being connected to the negative pressure channel;

[0009] A sleeve shaft is fixedly sleeved on a fixed shaft. The sleeve shaft has the recessed portion and a second through hole is provided in the recessed portion. The first through hole communicates with the second through hole.

[0010] The adsorption roller is rotatably sleeved on the shaft.

[0011] Alternatively, the sleeve shaft and the fixed shaft are fixedly connected by a pin.

[0012] Alternatively, the material belt drive mechanism may further include a negative pressure chamber adjustment component, which rotates in conjunction with the negative pressure component to adjust the adsorption angle of the adsorption roller.

[0013] Alternatively, the conveyor belt drive mechanism may further include a negative pressure chamber end cap, which is fixedly connected to the negative pressure chamber adjusting member and connected to the negative pressure member.

[0014] Alternatively, the negative pressure chamber end cap has a waist-shaped hole, through which fasteners pass and are fastened to the negative pressure component.

[0015] Alternatively, the outer edge of the negative pressure chamber end cap abuts against the inner surface of the adsorption roller.

[0016] Alternatively, the conveyor belt drive mechanism may further include a fixed base, on which a brush is mounted, the brush abutting against the roller surface of the adsorption roller.

[0017] Optionally, the mounting base is also equipped with a dust collection box for collecting the dust scraped off by the brush.

[0018] According to another aspect of this application, a cell winding device is also provided, comprising: a strip drive mechanism and a winding needle as described in any of the preceding claims, wherein the winding needle is located downstream of the strip drive mechanism in the strip conveying direction.

[0019] The feed belt drive mechanism in this embodiment employs an adsorption roller to absorb the feed belt. During rotation, the adsorption roller continuously absorbs upstream feed belt and releases downstream feed belt, eliminating the need for a pressure roller and preventing slippage between the feed belt and the adsorption roller. Furthermore, it reduces dust accumulation and the risk of dust puncturing the feed belt. Because the battery cell winding equipment in this embodiment utilizes the aforementioned feed belt drive mechanism, the battery cell yield is improved.

[0020] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0022] Figure 1 This is a schematic diagram illustrating the working principle of a cell winding device according to an embodiment of this application.

[0023] Figure 2 This is a perspective view of a belt drive mechanism according to an embodiment of this application.

[0024] Figure 3 This is a front view of a belt drive mechanism according to an embodiment of this application.

[0025] Figure 4 It is along Figure 3 A cross-sectional view along line AA.

[0026] Figure 5 This is a perspective view of a conveyor belt drive mechanism according to an embodiment of this application after removing the adsorption roller.

[0027] Figure 6 This is a perspective view of a fixed shaft according to an embodiment of this application.

[0028] Figure 7 This is a perspective view of a negative pressure component according to an embodiment of this application.

[0029] Figure 8 This is a front view of a negative pressure component according to an embodiment of this application.

[0030] Figure 9 It is along Figure 8 A cross-sectional view of the BB line.

[0031] Figure 10 This is a schematic diagram of the working principle of a cell winding device according to another embodiment of this application.

[0032] Figure 11 This is a perspective view of a belt drive mechanism according to another embodiment of this application.

[0033] Figure 12 This is a perspective view of a belt drive mechanism according to another embodiment of this application from another angle.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100. Belt drive mechanism; 101. Adsorption roller; 102. Adsorption hole; 103. Drive component; 104. Through roller; 105. Fixed shaft; 106. Negative pressure channel; 107. First through hole; 108. Sleeve shaft; 109. Recess; 110. Second through hole; 111. Negative pressure chamber; 112. Negative pressure chamber adjusting component; 113. Negative pressure chamber end cap; 114. Waist-shaped hole; 115. Fastener; 116. Outer edge; 117. Negative pressure component; 118. Fixed seat; 119. Brush; 120. Dust collection box; 121. Connector; 122. Pin hole; 200. Belt; 300. Winding needle. Detailed Implementation

[0036] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0037] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0038] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0039] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0041] In the following description, “connection” includes both direct connection between the two and indirect connection between the two through, for example, adapters, middleware, etc.

[0042] In the following description, "electrode", "diaphragm", and "strip" are used only to illustrate the working principle of the strip drive mechanism and the cell winding equipment, and should not be considered as part of the strip drive mechanism and the cell winding equipment.

[0043] In the following description, each drive component can be driven by a variety of power sources such as cylinders and motors.

[0044] like Figure 1 As shown, a battery cell winding device in one embodiment of this application includes a strip drive mechanism 100 and a winding needle 300. In the conveying direction of the strip 200, the winding needle 300 is located downstream of the strip drive mechanism 100.

[0045] Specifically, in Figure 1From the perspective of [the observer], the material strip 200 is conveyed along the direction indicated by the straight arrow. In the conveying direction of the material strip 200, the material strip 200 first passes through the material strip drive mechanism 100, which provides driving force to the material strip 200, enabling it to continue being conveyed downstream, and then reaches the winding needle 300, which winds the material strip 200 to form a battery cell. By adjusting the rotational speed of the drive component 103 of the material strip drive mechanism 100, the conveying speed of the material strip 200 can be adjusted, thereby adjusting the tension of the material strip 200 between the material strip drive mechanism 100 and the winding needle 300. In the embodiment described below, the material strip drive mechanism 100 uses an adsorption roller 101 to adsorb the material strip 200, and then the adsorption roller 101 rotates to convey the material strip 200 downstream, eliminating the need for a pressure roller, avoiding dust accumulation and punctures to the material strip 200, and improving the yield of battery cells. Other beneficial effects obtained by the battery cell winding equipment in this embodiment due to the use of the strip drive mechanism 100 described below will be described in detail below.

[0046] like Figure 1 and Figure 2 As shown, a material belt driving mechanism 100 according to one embodiment of this application includes: an adsorption roller 101, the adsorption roller 101 having adsorption holes 102 for adsorbing material belt 200; and a driving member 103, the driving member 103 being able to drive the adsorption roller 101 to rotate to transport the material belt 200.

[0047] Specifically, the adsorption holes 102 on the adsorption roller 101 can be connected to an external negative pressure mechanism, thereby forming a negative pressure on the surface of the adsorption holes 102 to adsorb the material belt 200. The driving component 103 can be a mechanism such as a motor or cylinder connecting rod to drive the adsorption roller 101 to rotate. During the rotation of the adsorption roller 101, the material belt 200 is continued to be transported downstream. In this embodiment, because the adsorption roller 101 is used to adsorb the material belt 200, the slippage between the material belt 200 and the adsorption roller 101 of the material belt driving mechanism 100 can be avoided without the need for a pressure roller, and dust accumulation is less likely to occur, reducing the risk of dust puncturing the material belt 200 and improving the yield of battery cells. At the same time, due to the adsorption method, some of the dust on the material belt 200 can also be sucked away by the adsorption holes 102 in a timely manner.

[0048] like Figures 3 to 9 As shown, in one embodiment of this application, the conveyor belt drive mechanism 100 further includes a negative pressure member 117 and a fixed base 118. The negative pressure member 117 is fixedly connected to the fixed base 118, and the adsorption roller 101 is rotatably sleeved on the negative pressure member 117.

[0049] Specifically, the external negative pressure mechanism provides negative pressure to the adsorption roller 101 through the negative pressure component 117. The negative pressure component 117 is fixedly connected to the fixed base 118, so the negative pressure component 117 itself does not rotate, which is conducive to the stable connection of the external negative pressure mechanism. The adsorption roller 101 rotates and sleeves the negative pressure component 117. While providing negative pressure to the adsorption holes 102 of the adsorption roller 101, the negative pressure component 117 also acts as the rotating shaft of the adsorption roller 101, making the connection between the adsorption roller 101 and the negative pressure mechanism simpler and more flexible.

[0050] like Figures 3 to 9 As shown in one embodiment of this application, the negative pressure member 117 is provided with a negative pressure channel 106 and a recess 109, and the recess 109 has a through hole communicating with the negative pressure channel 106. The recess 109 and the inner surface of the adsorption roller 101 form a negative pressure cavity 111, and the adsorption hole 102 communicates with the negative pressure cavity 111.

[0051] Specifically, the negative pressure mechanism provides negative pressure to the adsorption hole 102 through the negative pressure component 117. The negative pressure component 117 can be a part obtained by machining a shaft, or it can be a component formed by assembling several parts together, as described below. Figure 3 As shown, the negative pressure component 117 is connected to the negative pressure mechanism (not shown) via an external connector 121. Figure 4 As shown, the negative pressure component 117 is hollow, forming a negative pressure channel 106, which connects to the connector 121. The negative pressure component 117 also has a recess 109, which can be formed by machining the negative pressure component 117 to remove a portion of the material, or by integral molding. The recess 109 has a through hole communicating with the negative pressure channel 106. In the embodiments described below, the negative pressure component 117 includes a fixed shaft 105 and a sleeve shaft 108; therefore, the through holes include a first through hole 107 and a second through hole 110 that communicate with each other. In other embodiments of this application, when the negative pressure component 117 is a single integral part, a through hole directly communicating with the negative pressure channel 106 can be machined at the recess 109. The adsorption roller 101 is sleeved on the negative pressure component 117, and after sleeved, the adsorption roller 101 can rotate, thereby conveying the material belt 200. Furthermore, the recess 109 and the inner surface of the adsorption roller 101 form a negative pressure cavity, and the adsorption hole 102 communicates with the negative pressure cavity 111. Therefore, when the negative pressure mechanism evacuates the negative pressure component 117, a negative pressure is formed at the outlet of the adsorption hole 102 through the negative pressure channel 106, the through hole, and the negative pressure cavity 111. In this application, the adsorption hole 102 communicating with the negative pressure cavity 111 does not mean that all adsorption holes 102 communicate with the negative pressure cavity 111 simultaneously to form a negative pressure. On the contrary, due to the presence of the recess 109, during the rotation of the adsorption roller 101, only the adsorption hole 102 corresponding to the recess 109 communicates with the negative pressure cavity 111. This ensures that, as in the case of... Figure 1During the operation of the battery cell winding equipment shown, only the material strip 200 wrapped around the adsorption roller 101 will be adsorbed, while other parts of the adsorption roller 101 will not leak air, thus ensuring the adsorption effect.

[0052] like Figures 3 to 9 As shown, in one embodiment of this application, an assembled negative pressure component 117 is used. The negative pressure component 117 includes: a fixed shaft 105, which is provided with the negative pressure channel 106 and a first through hole 107, the first through hole 107 communicating with the negative pressure channel 106; and a sleeve shaft 108, which is fixedly sleeved on the fixed shaft 105, the sleeve shaft 108 having a recess 109, the recess 109 having a second through hole 110, the first through hole 107 communicating with the second through hole 110. The adsorption roller 101 is rotatably sleeved on the sleeve shaft 108.

[0053] Specifically, in this embodiment, the negative pressure component 117 is a component assembled from a fixed shaft 105 and a sleeve shaft 108. For example... Figure 6 As shown, the fixed shaft 105 is a hollow shaft, with the hollow portion serving as a negative pressure channel 106. The fixed shaft 105 has a first through hole 107 communicating with the negative pressure channel 106. The fixed shaft 105 is used for fixed connection to the fixed base 118, so that the fixed base 118 supports the negative pressure component 117 and the adsorption roller 101. Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 9 As shown, the sleeve 108 is fixedly sleeved onto the fixed shaft 105 by means of pins, interference fits, etc. The sleeve 108 is formed with a recess 109 by machining, injection molding, etc. A second through hole 110 is formed in the recess 109. After the first through hole 107 communicates with the second through hole 110, the negative pressure mechanism can form negative pressure in the recess 109 through the negative pressure channel 106, the first through hole 107, and the second through hole 110. The adsorption roller 101 is rotatably sleeved onto the sleeve 108. In this embodiment, the fixed shaft 105 and the sleeve 108 are machined separately, simplifying the manufacturing process.

[0054] like Figure 5 and Figure 6 As shown, in one embodiment of this application, the sleeve shaft 108 and the fixed shaft 105 are fixedly connected by a pin.

[0055] Specifically, such as Figure 5 As shown, the sleeve shaft 108 has a pin hole 122, and the fixed shaft 105 also has a pin hole 122. After inserting the fixed shaft 105 into the sleeve shaft 108, align the two pin holes 122 and insert the pin (not shown in the figure). This will achieve a fixed connection between the sleeve shaft 108 and the fixed shaft 105, which is convenient for assembly and can ensure the accurate positional relationship between the recess 109, the first through hole 107 and the second through hole 110.

[0056] like Figure 7 , Figure 8 and Figure 9 As shown in one embodiment of this application, the conveyor belt drive mechanism 100 further includes a negative pressure chamber adjustment member 112. The negative pressure chamber adjustment member 112 is rotatably coupled with the negative pressure member 117 to adjust the adsorption angle of the adsorption roller 101.

[0057] Specifically, the negative pressure chamber adjusting component 112 is rotatably engaged with the negative pressure component 117. Different rotation angles of the negative pressure chamber adjusting component 112 can block different areas of the recess 109. Correspondingly, the area of ​​communication between the negative pressure chamber 111 and the adsorption hole 102 of the adsorption roller 101 also varies. (Comparison) Figure 1 and Figure 10 It is known that multiple rollers 104 exist along the conveying path of the material belt 200 to change the conveying direction of the material belt 200 and thus make the material belt 200 form a wrap angle with the adsorption roller 101. This wrap angle also allows the adsorption roller 101 to obtain a larger adsorption area with the material belt 200. Figure 1 In the middle, the wrap angle of the material belt 200 to the adsorption roller 101 is close to 180 degrees, while... Figure 10 In this process, due to the different installation positions of the roller 104, the wrap angle of the material strip 200 to the adsorption roller 101 is less than 180 degrees. Therefore, by rotating the negative pressure chamber adjustment component 112, the adsorption angle α of the adsorption roller 101 can be adjusted so that the adsorption angle α is always equal to the wrap angle of the material strip 200 to the adsorption roller 101. This can improve the versatility of the material strip drive mechanism 100 for different battery cell winding equipment and prevent air leakage from the adsorption roller 101 due to the different wrap angles of the material strip 200 to the adsorption roller 101. In other words, by adjusting the adsorption angle α of the adsorption roller 101, the adsorption holes 102 at the position where the material strip 200 is wrapped can provide negative pressure, while the adsorption holes 102 at other positions will not provide negative pressure, thus preventing air from the outside atmosphere from entering the negative pressure chamber 111 and causing the adsorption roller 101 to not adsorb the material strip 200 firmly. As the adsorption roller 101 rotates continuously, the adsorption hole 102 entering the adsorption angle α begins to adsorb the upstream material strip 200, and the adsorption hole 102 leaving the adsorption angle α no longer adsorbs the material strip 200, so the material strip 200 is conveyed towards the winding needle 300.

[0058] like Figure 4 , Figure 5 and Figure 7 As shown, in one embodiment of this application, the conveyor belt drive mechanism 100 further includes a negative pressure chamber end cap 113. The negative pressure chamber end cap 113 is fixedly connected to the negative pressure chamber adjusting member 112, and the negative pressure chamber end cap 113 is connected to the negative pressure member 117.

[0059] Specifically, the negative pressure chamber end cap 113 serves to seal both ends of the recess 109. The negative pressure chamber end cap 113 is fixedly connected to the negative pressure chamber adjusting component 112 via fasteners, welding, riveting, or other methods. The negative pressure chamber end cap 113 is connected to the negative pressure component 117 and allows the negative pressure chamber adjusting component 112 to rotate. Rotation of the negative pressure chamber end cap 113 will cause the negative pressure chamber adjusting component 112 to rotate. Figure 4 In the illustrated embodiment, the negative pressure chamber end cap 113 is sleeved on the fixed shaft 105 and connected to the sleeve shaft 108. If the negative pressure component 117 is a shaft, the negative pressure chamber end cap 113 can be directly connected to the negative pressure component 117.

[0060] like Figure 5 and Figure 7 As shown in the two accompanying drawings, one connection method between the negative pressure chamber end cap 113 and the negative pressure component 117 is specifically illustrated. The negative pressure chamber end cap 113 has an oblong hole 114, and a fastener 115 passes through the oblong hole 114 to be fastened to the negative pressure component 117.

[0061] Specifically, taking the connection between the negative pressure chamber end cap 113 and the sleeve shaft 108 as an example, the fastener 115 passes through the oblong hole 114 and is fastened to the end of the sleeve shaft 108, thereby fixing the negative pressure chamber end cap 113 to the sleeve shaft 108. Correspondingly, the size of the adsorption angle α is also fixed. When it is necessary to adjust the size of α, loosen the fastener 115, rotate the negative pressure chamber end cap 113, and drive the negative pressure chamber adjusting component 112 to rotate, changing the size of the adsorption angle α. After adjustment, tighten the fastener 115 again to fix the new adsorption angle α.

[0062] like Figure 4 and Figure 7 As shown, in one embodiment of this application, the outer edge 116 of the negative pressure chamber end cap 113 abuts against the inner surface of the adsorption roller 101.

[0063] Specifically, after the adsorption roller 101 is fitted onto the sleeve shaft 108, the outer edge 116 of the negative pressure chamber end cap 113 abuts against the inner surface of the adsorption roller 101, which improves the sealing performance of the negative pressure chamber 111 and prevents air leakage from affecting the adsorption effect. In the embodiments of this application, taking the axis of the fixed shaft 105 as a reference, the side closer to the axis of the fixed shaft 105 is called the inner side, and the side farther from the axis of the fixed shaft 105 is called the outer side. Therefore, the outer edge 116 refers to the edge away from the axis of the fixed shaft 105 in the radial direction of the negative pressure chamber end cap 113. Similarly, the inner surface of the adsorption roller 101 refers to the surface closer to the axis of the fixed shaft 105 in the radial direction of the adsorption roller 101, while the surface away from the axis of the fixed shaft 105 is the roller surface of the adsorption roller 101, or the adsorption surface.

[0064] When assembling the conveyor belt drive mechanism 100, first insert the fixed shaft 105 into the sleeve shaft 108, aligning the pin holes 122 on the fixed shaft 105 and 122 on the sleeve shaft 108. Then, insert a pin to fix the fixed shaft 105 and sleeve shaft 108 together, ensuring they cannot rotate relative to each other. Next, install the negative pressure chamber end cap 113, which has the negative pressure chamber adjustment component 112 fixed on it, onto the sleeve shaft 108, ensuring a suitable adsorption angle α. Then, sleeve the adsorption roller 101 onto the sleeve shaft 108, allowing it to rotate under the support of the bearings on the fixed shaft 105. Next, fix the fixed shaft 105 to the fixed base 118. Finally, install the drive component 103 onto the fixed base 118. The drive component 103 is preferably a motor, whose output shaft drives the adsorption roller 101 to rotate.

[0065] like Figure 11 As shown, in one embodiment of this application, the conveyor belt drive mechanism 100 further includes a fixed base 118. The fixed base 118 is equipped with a brush 119, which abuts against the roller surface of the adsorption roller 101.

[0066] Specifically, in this embodiment, the fixing seat 118 mounts both the fixing shaft 105 and the brush 119. In other embodiments of this application, the fixing shaft 105 can be mounted on other supports and does not share the fixing seat 118 with the brush 119. The brush 119 abuts against the roller surface of the adsorption roller 101. When the material belt 200 is not wrapped around the adsorption roller 101, the brush 119 will clean the roller surface as the adsorption roller 101 rotates, preventing dust from accumulating on the adsorption roller 101.

[0067] like Figure 12 As shown, in one embodiment of this application, the mounting base 118 is also equipped with a dust collection box 120, which is used to collect the dust scraped off by the brush 119.

[0068] Specifically, after the dust collection box 120 is installed on the mounting base 118, it can be located below the brush 119. After the brush 119 sweeps the dust off the adsorption roller 101, the dust falls into the dust collection box 120 under the action of gravity. The dust collection box 120 can be connected to an external negative pressure mechanism to suck away the dust.

[0069] In the embodiments of this application, although descriptions such as negative pressure component 117, negative pressure channel 106, and negative pressure chamber 111 are used, it does not mean that these structures are always in a negative pressure state. These structures can only maintain negative pressure during the operation of the negative pressure mechanism. Furthermore, "negative pressure" is relative to normal atmospheric pressure and refers to air pressure lower than standard atmospheric pressure.

[0070] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0071] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A tape drive mechanism (100) characterized by, The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction. The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction. The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction. The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction. The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction.

2. The tape drive mechanism (100) according to claim 1, characterized in that The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction.

3. The tape drive mechanism according to claim 2, wherein, The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction. The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction. The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction.

4. The tape drive mechanism according to claim 3, wherein, The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction.

5. The tape drive mechanism according to claim 2, wherein, The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction.

6. The tape drive mechanism according to claim 5, wherein, The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction.

7. The tape drive mechanism according to claim 6, wherein, The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction.

8. The tape drive mechanism according to claim 6, wherein, The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction.

9. The tape drive mechanism of claim 1, wherein, The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction.

10. The web drive mechanism of claim 9, wherein, The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction.

11. An electrode core winding apparatus characterized by comprising: The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction. The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction. The utility model relates to a material belt driving mechanism (100) and a winding needle (300), the winding needle (300) is located downstream of the material belt driving mechanism (100) in the material belt (200) conveying direction. 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