Hobbing feeding mechanism and winding equipment

Abstract

The invention relates to a hobbing feeding mechanism and winding equipment. The hobbing feeding mechanism comprises a rolling assembly, a feeding assembly and a rolling assembly, wherein the rolling assembly is used for pressing a material belt onto a winding needle; the hobbing feeding assembly comprises a rotating shaft, a cutter arranged on the rotating shaft and an air blowing part, and the rotating shaft can be controlled to rotate so as to drive the cutter to rotate to be opposite to the winding needle; when the rotating shaft drives the cutter to rotate to be opposite to the winding needle, the cutter cuts off the passing material belt, and the blowing piece is used for blowing airflow to the winding needle so that the upstream cut-off end of the material belt can be blown into the winding needle. Thus, under the condition that downstream conveying of the material belt is not stopped, the material belt is cut off in the process that the rotating shaft drives the cutter to rotate, the upstream cut-off end of the material belt is blown into the receding part of the winding needle through airflow blown out by the blowing piece to be fixed, the winding needle keeps rotating in the process, on one hand, the production efficiency is greatly improved, and on the other hand, the production cost is reduced. On the other hand, needle threading and film combining actions are omitted, and the structure of winding equipment is greatly simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery manufacturing equipment, in particular to a rolling and cutting feeding mechanism and a winding equipment. BACKGROUND

[0002] The battery core is an important component of the battery, which can be made by winding the needle for each layer of the material belt (such as four layers of material belt of diaphragm, anode pole piece, diaphragm and cathode pole piece).

[0003] In the prior art, the material belt is converged by the film combining mechanism and then enters the winding needle in the first station for winding. The winding needle in the first station switches to the second station after winding a battery core, and another winding needle switches to the first station. At this time, the material belt is converged by the film combining mechanism and then passes through the first station, and the winding needle in the first station is stretched out from the turret to complete the belt threading (i.e. the material belt is threaded into the slit of the winding needle). Then, the inner clamp needle in the winding needle clamps the material belt, and then the cutting knife between the first station and the second station cuts the material belt. Then, the winding needle in the first station starts to wind the next battery core. In summary, the action process of the winding operation in the prior art is complex, which leads to a complex structure of the winding equipment and low production efficiency. SUMMARY

[0004] Therefore, it is necessary to provide a rolling and cutting feeding mechanism and a winding equipment to improve the above-mentioned defects, aiming at the problem that the action process of the winding operation in the prior art is complex, which leads to a complex structure of the winding equipment and low production efficiency.

[0005] A rolling and cutting feeding mechanism, comprising:

[0006] a roller assembly for pressing the material belt against the winding needle; and

[0007] The rolling and cutting feeding assembly comprises a rotating shaft, a cutting knife and a blowing piece, the cutting knife is arranged on the rotating shaft, and the rotating shaft can be controlled to rotate around its axis to drive the cutting knife and the blowing piece to rotate opposite to the winding needle.

[0008] When the rotating shaft drives the cutting knife to rotate opposite to the winding needle, the cutting knife cuts the material belt passing through, and the blowing piece blows air flow to the winding needle to blow the upstream cut end of the material belt into the winding needle.

[0009] In one embodiment, the blowing piece is arranged on the rotating shaft.

[0010] In one embodiment, the rolling and cutting feeding assembly further comprises a heating piece arranged on the cutting knife, and the heating piece is used for heating the cutting knife.

[0011] In one of the embodiments, the roll cutting feeding assembly further comprises an electric slip ring mounted on the rotating shaft, and the heating member is electrically connected with an external power source through the electric slip ring.

[0012] In one of the embodiments, the roll cutting feeding assembly further comprises a moving base, and the rotating shaft is rotatably connected to the moving base.

[0013] The roll cutting feeding mechanism further comprises a driving assembly, and the moving base is mounted on a driving end of the driving assembly so that the driving assembly can drive the moving base to move towards or away from the winding needle.

[0014] In one of the embodiments, the driving assembly is configured to drive the moving base to move in a horizontal direction and a vertical direction; or

[0015] The driving assembly is configured to drive the moving base to move in a preset direction, and the preset direction is inclined to both the horizontal direction and the vertical direction.

[0016] In one of the embodiments, the roller pressing assembly comprises a first roller pressing assembly, and the first roller pressing assembly has a first pressing roller rotatable about its own axis, and the first roller pressing assembly is controllable to drive the first pressing roller to press a portion of the material tape upstream of the cutting knife onto the winding needle.

[0017] In one of the embodiments, the roller pressing assembly further comprises a second roller pressing assembly, and the second roller pressing assembly has a second pressing roller rotatable about its own axis, and the second roller pressing assembly is controllable to drive the second pressing roller to press a portion of the material tape downstream of the cutting knife onto the winding needle.

[0018] In one of the embodiments, the roller pressing assembly has a first state, a second state and a third state.

[0019] When the roller pressing assembly is in the first state, the first roller pressing assembly drives the first pressing roller to press the material tape passing through onto the winding needle, the second roller pressing assembly drives the second pressing roller to press the material tape passing through onto the winding needle, and the rotating shaft is controllable to move towards or away from the winding needle.

[0020] When the roller pressing assembly is in the second state, the first roller pressing assembly drives the first pressing roller to release the material tape passing through, and the second pressing roller of the second roller pressing assembly presses the material tape passing through onto the winding needle.

[0021] When the roller pressing assembly is in the third state, the first roller pressing assembly drives the first pressing roller to release the material tape passing through, and the second roller pressing assembly drives the second pressing roller to release the material tape passing through.

[0022] In one embodiment, the rolling feed assembly further includes a movable seat, and the rotating shaft is rotatably connected to the movable seat; the rolling feed mechanism further includes a drive assembly, and the movable seat is mounted on the drive end of the drive assembly so that the drive assembly can drive the movable seat closer to or away from the coiling needle.

[0023] The first roll forming assembly and / or the second roll forming assembly are mounted on the drive end of the drive assembly.

[0024] In one embodiment, the first roller pressing assembly further includes a first mounting bracket and a rotary drive, the first mounting bracket being controllably positioned close to or away from the needle, the first pressure roller being rotatably connected to the first mounting bracket, and the rotary drive being mounted on the first mounting bracket and connected to the first pressure roller so that the rotary drive can drive the first pressure roller to rotate.

[0025] In one embodiment, the rolling feed assembly further includes an auxiliary air blowing component located upstream of the cutter, the auxiliary air blowing component being used to blow airflow toward the coil needle, so as to work together with the air blowing component to blow the upstream cut end of the strip into the coil needle.

[0026] A winding device includes a rolling feed mechanism as described in any of the above embodiments.

[0027] In actual use, the aforementioned rolling feeding mechanism and winding equipment convey the material strip at a certain speed, passing through the first station. The winding needle reaches the first station and rotates around its own axis. Simultaneously, the roller pressing assembly presses the material strip against the winding needle located at the first station, and the rotating shaft drives the cutter and air blowing component to rotate. When the cutter and air blowing component rotate with the rotating shaft to be opposite the winding needle located at the first station, the winding needle at the first station also rotates until its clearance portion faces the cutter and air blowing component. At this time, the cutter contacts and cuts the material strip passing through the clearance portion on the winding needle, and the air blowing component blows air towards the clearance portion of the winding needle, thereby blowing the upstream cut end of the material strip formed after being cut into the clearance portion of the winding needle. The upstream cut end of the material strip entering the clearance portion is fixed inside the clearance portion, and then, as the winding needle at the first station continues to rotate, the material strip is wound onto the outer circumference of the winding needle, thus realizing the winding of the material strip.

[0028] In this way, while the material strip continues to be conveyed downstream, the cutting of the material strip is achieved by rotating the cutter driven by the rotating shaft (i.e., rolling cutting). The airflow blown by the air blowing component blows the upstream cut end of the material strip into the clearance part of the winding needle. The upstream cut end of the material strip that enters the clearance part is fixed in the clearance part. During this process, the winding needle continues to rotate, which greatly improves production efficiency and eliminates the need for needle threading and film wrapping, greatly simplifying the structure of the winding equipment. Attached Figure Description

[0029] Figures 1 to 3 This is a schematic diagram of the operation process of a winding device according to an embodiment of the present invention;

[0030] Figure 4 for Figure 1 A schematic diagram of the structure of the rolling feed assembly of the rolling feed mechanism of the winding equipment shown;

[0031] Figure 5 for Figure 1 The diagram shows the structure of the rolling feed mechanism and the winding needle mechanism of the winding equipment.

[0032] Figure 6 for Figure 5 The diagram shows the structure of the rolling feed mechanism.

[0033] Figure 7 for Figure 6 The schematic diagram of the rolling feed mechanism shown is presented from another perspective.

[0034] Figure 8 This is a schematic diagram of the structure of the rolling feed mechanism and the needle winding mechanism in another embodiment of the present invention;

[0035] Figure 9 for Figure 8 The diagram shows the structure of the rolling feed mechanism.

[0036] Figure 10 for Figure 9 The schematic diagram of the rolling feed mechanism shown is presented from another perspective.

[0037] Figure 11 for Figure 9 The diagram shows the structure of the first roller pressing assembly of the rolling feed mechanism.

[0038] Figure 12 for Figure 1 The diagram shows the structure of the needle winding mechanism of the winding equipment.

[0039] Figure 13 for Figure 1 A schematic diagram of the winding needle mechanism and the rolling feed mechanism of the winding equipment shown;

[0040] Figure 14 for Figure 13 The diagram shows the cross-sectional structure of the needle winding mechanism.

[0041] Figure 15 This is a schematic diagram of the structure of the needle winding mechanism and the rolling and feeding mechanism in another embodiment of the present invention. Detailed Implementation

[0042] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0048] Please see Figures 1 to 4 , Figure 13 An embodiment of the present invention provides a winding device, including a winding needle mechanism 10 and a rolling cutting and feeding mechanism 20. The winding needle mechanism 10 includes a winding needle 11 located at a first station a1 and controllably rotatable. The winding needle 11 has an outer peripheral surface for winding a strip A and a clearance portion 110 located on the outer peripheral surface. The clearance portion 110 is used to allow the upstream cut end A11 formed after the strip A is cut to enter, and to fix the upstream cut end A11 of the entering strip A. The rolling cutting and feeding mechanism 20 is used to press the strip A against the outer peripheral surface of the winding needle 11 located at the first station a1, and to cut the passing strip A at the clearance portion 110 on the winding needle 11 by rolling cutting, and to blow the upstream cut end A11 of the strip A into the clearance portion 110 of the winding needle 11. The upstream cut end A11 of the strip A that enters into the clearance portion 110 is fixed in the clearance portion 110.

[0049] In the embodiments of this application, the rolling feed mechanism 20 includes a roller pressing assembly (not shown) and a rolling feed assembly 23. The roller pressing assembly is used to press the passing material strip A against the winding needle 11 located at the first station a1. The rolling feed assembly 23 includes a rotating shaft 231, a cutter 232, and an air blowing component 233. The cutter 232 and the air blowing component 233 are both mounted on the rotating shaft 231. The rotating shaft 231 can be controlled to rotate around its own axis to drive the cutter 232 and the air blowing component 233 thereon to rotate so that they are opposite to the clearance portion 110 on the winding needle 11 located at the first station a1. When the rotating shaft 231 drives the cutter 232 and the air blowing component 233 to rotate to be opposite to the clearance portion 110 on the winding needle 11 located at the first work station a1, the cutter 232 cuts the material strip A that is passing through, and the air blowing component 233 blows airflow into the winding needle 11 located at the first work station a1 to blow the upstream cut end A11 of the material strip A into the clearance portion 110 on the winding needle 11. The upstream cut end A11 of the material strip A that enters the clearance portion 110 is fixed in the clearance portion 110.

[0050] In actual use, the aforementioned winding equipment conveys the material strip A downstream at a certain speed, passing through the first station a1. The winding needle 11 reaches the first station a1 and rotates around its own axis. At the same time, the roller pressing assembly presses the material strip A against the winding needle 11 located at the first station a1, and the rotating shaft 231 drives the cutter 232 and the air blowing component 233 to rotate. When the cutter 232 and the air blower 233 rotate with the shaft 231 to face the winding needle 11 located at the first station a1, the winding needle 11 located at the first station a1 also rotates to face the clearance portion 110 on it towards the cutter 232 and the air blower 233. At this time, the cutter 232 contacts the material strip A passing through the clearance portion 110 on the winding needle 11 and cuts it. The air blower 233 blows air towards the clearance portion 110 of the winding needle 11, thereby blowing the upstream cut end A11 formed after the material strip A is cut into the clearance portion 110 of the winding needle 11. The upstream cut end A11 of the material strip A that enters the clearance portion 110 is fixed in the clearance portion 110. As the winding needle 11 at the first station a1 continues to rotate, the material strip A is wound onto the outer circumferential surface of the winding needle 11, thus realizing the winding of the material strip A.

[0051] Thus, while the material strip A continues to be conveyed downstream, the material strip A is cut (i.e., rolled cut) by rotating the cutter 232 driven by the rotating shaft 231. The airflow blown out by the air blowing component 233 blows the upstream cut end A11 of the material strip A into the clearance part 110 of the winding needle 11. The upstream cut end A11 of the material strip A that enters the clearance part 110 is fixed in the clearance part 110. During this process, the winding needle 11 continues to rotate, which greatly improves production efficiency and eliminates the needle threading and film wrapping actions, greatly simplifying the structure of the winding equipment.

[0052] Understandably, after the cutter 232 cuts the passing strip A, an upstream cut-off end A11 and a downstream cut-off end are formed at the cut end of the strip A. The downstream cut-off end separates from the upstream cut-off end A11 as the downstream strip A is conveyed downstream. Under the pressure of the roller assembly on the strip A, the upstream cut-off end A11 remains in the clearance portion 110 of the winding needle 11, and is then blown by the airflow from the air blowing component 233 into the clearance portion 110 of the winding needle 11 at the first station a1. The upstream cut-off end A11 of the strip A that enters the clearance portion 110 is fixed in the clearance portion 110, thereby enabling the winding needle 11 at the first station a1 to wind the strip A.

[0053] Specifically, in this embodiment, the rolling feed assembly 23 further includes a heating element 234 disposed on the cutter 232. The heating element 234 heats the cutter 232, enabling it to thermally cut the material strip A, ensuring that the cutter 232 can accurately and quickly cut the material strip A. Specifically, the cutter 232 has an internal mounting hole (not shown), through which the heating element 234 passes. This allows the heat generated by the heating element 234 to be quickly transferred to the cutting edge of the cutter 232, ensuring that the cutting edge temperature meets the process requirements. Optionally, the heating element 234 can be a heating rod.

[0054] Furthermore, the rolling feed assembly 23 also includes an electric slip ring 236 mounted on the rotating shaft 231. The heating element 234 is electrically connected to an external power source through the electric slip ring 236, thereby preventing the connection lines between the heating element 234 and the external power source from becoming entangled when the rotating shaft 231 rotates. It should be noted that the electric slip ring 236 has a stator and a rotor. The rotor rotates synchronously with the rotating shaft 231, while the stator remains stationary. The stator has a first electrical connector that is electrically connected to the external power source via a line, and the rotor has a second electrical connector that is electrically connected to the heating element 234 via a line. The first and second electrical connectors maintain electrical connection when the rotor rotates relative to the stator, thereby ensuring that the heating element 234 remains electrically connected to the external power source. It should be noted that the specific structure of the stator and rotor of the electric slip ring 236 can utilize readily available and mature technologies, and is not limited here.

[0055] Specifically, the air blowing component 233 has a first air knife 2331 for blowing out airflow. The first air knife 2331 can be a strip-shaped air outlet groove extending longitudinally in a direction parallel to the axial direction of the rotating shaft 231, or it can be a plurality of air outlet holes spaced apart in a direction parallel to the axial direction of the rotating shaft 231. As long as it can accurately and quickly blow the upstream cut end A11 of the material strip A into the clearance portion 110 on the winding needle 11 located at the first station a1 when the material strip A is cut, it is not limited here.

[0056] In embodiments of this application, the roller pressing assembly includes a first roller pressing assembly 21 and a second roller pressing assembly 22. The first roller pressing assembly 21 has a first pressure roller 211 rotatable about its own axis (see...). Figure 13 The first roller pressing assembly 21 can controllably drive the first pressure roller 211 to press the portion of the material strip A upstream of the cutter 232 against the outer peripheral surface of the winding needle 11 located at the first station a1. The second roller pressing assembly 22 has a second pressure roller 221 rotatable about its own axis (see...). Figure 13The second roller pressing assembly 22 can controllably drive the second pressure roller 221 to press the portion of the material strip A downstream of the cutter 232 against the outer circumferential surface of the winding needle 11 located at the first station a1. Thus, before the cutter 232 rolls the material strip A, both the upstream and downstream of the cutter 232 are pressed against the winding needle 11 located at the first station a1, thereby ensuring that the cutter 232 can accurately cut the material strip A, which is beneficial to improving the rolling quality.

[0057] It is understandable that, since the first pressure roller 211 of the first roller pressing assembly 21 and the second pressure roller 221 of the second roller pressing assembly 22 are both rotatable around their own axes, when the first pressure roller 211 and the second pressure roller 221 press the material strip A against the outer circumferential surface of the winding needle 11 located at the first station a1, the material strip A can pass through the space between the first pressure roller 211 and the winding needle 11 located at the first station a1 and the space between the second pressure roller 221 and the winding needle 11 located at the first station a1 under the traction action of the downstream, and be conveyed downstream. In other words, during the rolling cutting process driven by the rotating shaft 231, the cutter 232 rotates with the rotating shaft 231, and the coil needle 11 located at the first station a1 also rotates. The material strip A between the cutter 232 and the coil needle 11 is also conveyed downstream. The rotation speed of the rotating shaft 231, the rotation speed of the coil needle 11 and the conveying speed of the material strip A downstream are matched to ensure that the speeds of the three are consistent at the moment when the cutter 232 cuts the material strip A. This allows the cutter 232 to cut the material strip A accurately and quickly, and the air blowing component 233 can also accurately blow the upstream cut end A11 of the material strip A into the clearance part 110 of the coil needle 11 located at the first station a1.

[0058] Specifically, in the embodiment, the rolling assembly has a first state (see...). Figure 1 and Figure 2 ), second state (see Figure 3 And the third state. See also Figure 1 and Figure 2 When the roller pressing assembly is in its first state, the first pressure roller 211 and the second pressure roller 221 simultaneously press the strip A against the outer circumferential surface of the winding needle 11 located at the first station a1. The rotating shaft 231 can be controllably moved closer to the winding needle 11 located at the first station a1 to a rolling cutting position (see...). Figure 1 This ensures that the cutter 232 and air blower 233 on the rotating shaft 231 are sufficiently close to the coiling needle 11 located at the first work station a1, so that when the rotating shaft 231 rotates, it can drive the cutter 232 to roll-cut the material strip A passing through the clearance portion 110 of the coiling needle 11, and the air blower 233 can accurately blow the upstream cut end A11 of the material strip A into the clearance portion 110 of the coiling needle 11. The rotating shaft 231 can also be controlled to move away from the coiling needle 11 located at the first work station a1 and leave the above-mentioned rolling-cutting position (see...). Figure 2This creates a certain distance between the cutter 232 and the air blower 233 on the rotating shaft 231 and the winding needle 11 located at the first station a1, thereby avoiding interference between the cutter 232 and the air blower 233 and the winding action of the winding needle 11 located at the first station a1.

[0059] Please see Figure 3 When the roller pressing assembly is in the second state, the first pressure roller 211 separates from the winding needle 11 located at the first station a1 (i.e., the first pressure roller 211 stops pressing the material strip A passing between the first pressure roller 211 and the winding needle 11 located at the first station a1), and the second pressure roller 221 continues to press the passing material strip A against the outer peripheral surface of the winding needle 11 located at the first station a1. At this time, since the upstream first pressure roller 211 stops pressing the material strip A against the winding needle 11 located at the first station a1, it is easier to insert the starting end of the electrode material strip into the space between the material strip A and the outer peripheral surface of the winding needle 11 and / or between the layers of material strip A, thereby allowing the electrode material strip to be wound together with the material strip A onto the winding needle 11 located at the first station a1. At the same time, the winding needle 11 located at the first station a1 rotates to wind the material strip A onto its outer circumference. During this process, the second pressure roller 221 presses the material strip A against the outer circumference of the winding needle 11 located at the first station a1, ensuring that the material strip A can be tightly wound on the winding needle 11, and avoiding the phenomenon of the material strip A becoming loose or even falling off.

[0060] When the roller pressing assembly is in the third state, the first pressure roller 211 separates from the winding needle 11 located at the first station a1 (that is, the first pressure roller 211 stops pressing the material strip A passing between the first pressure roller 211 and the winding needle 11 located at the first station a1), and the second pressure roller 221 separates from the winding needle 11 located at the first station a1 (that is, the second pressure roller 221 also stops pressing the material strip A passing between the second pressure roller 221 and the winding needle 11 located at the first station a1).

[0061] Please continue reading Figures 1 to 3In actual use, firstly, the first roller pressing assembly 21 is controlled to drive the first pressure roller 211 to press the passing material belt A against the winding needle 11 located at the first station a1. Then, the second roller pressing assembly 22 is controlled to drive the second pressure roller 221 to press the passing material belt A against the winding needle 11 located at the first station a1 (at this time, the roller pressing assembly is in the first state mentioned above). At the same time, the winding needle 11 located at the first station a1 continues to rotate, and the material belt A continues to be conveyed downstream. The control shaft 231 moves close to the coiling needle 11 located at the first station a1 and moves to the rolling cutting position. The control shaft 231 drives the cutter 232 to rotate, causing the cutter 232 to cut the material strip A that is passing by (when the cutter 232 cuts the material strip A, the clearance part 110 on the coiling needle 11 located at the first station a1 also rotates to face the cutter 232 and the air blowing element 233). The airflow blown out by the air blowing element 233 blows the upstream cut end A11 of the material strip A into the coiling needle 11 located at the first station a1. Within the clearance portion 110 of 1, the clearance portion 110 fixes the upstream cutting end A11 of the incoming material strip A within the clearance portion 110 of the winding needle 11; then, the control shaft 231 moves away from the winding needle 11 located at the first station a1 and leaves the rolling cutting position; then, the control first roller pressing assembly 21 moves away from the winding needle 11 located at the first station a1 and separates from the winding needle 11 (at this time, the roller pressing assembly is in the second state described above); at this time, the electrode material strip can be inserted into the gap between the material strip A and the winding needle 11 and / or the gap between two layers of material strip A, so that the electrode material strip is wound together with the material strip A onto the outer peripheral surface of the winding needle 11 located at the first station a1; after the material strip A has been wound onto the outer peripheral surface of the winding needle 11 located at the first station a1 for at least one turn, the control second roller pressing assembly 22 drives the second pressure roller 221 away from the winding needle 11 located at the first station a1 and separates from the winding needle 11 (at this time, the roller pressing assembly is in the third state described above). At this time, the winding needle 11 continues to wind the material strip A and the electrode strip.

[0062] Please see Figures 4 to 7As shown in the embodiments of this application, the rolling feed assembly 23 further includes a movable seat 235, on which the rotating shaft 231 is rotatably connected. The rolling feed mechanism 20 further includes a drive assembly 24, on which the movable seat 235 is mounted at the drive end, so that the drive assembly 24 can drive the movable seat 235 to approach or move away from the coiling needle 11 located at the first station a1. When the drive assembly 24 drives the movable seat 235 to approach the coiling needle 11 located at the first station a1, it can drive the rotating shaft 231 to the aforementioned rolling position. When the drive assembly 24 drives the movable seat 235 away from the coiling needle 11 located at the first station a1, it can drive the rotating shaft 231 away from the rolling position. Thus, when it is necessary to cut the material strip A, firstly, the first roller pressing assembly 21 is controlled to drive its first pressure roller 211 to press the material strip A against the winding needle 11 located at the first work station a1, and the second roller pressing assembly 22 is controlled to drive its second pressure roller 221 to press the material strip A against the winding needle 11 located at the first work station a1; then, under the driving action of the drive assembly 24, the moving seat 235 drives the rotating shaft 231 to approach the winding needle 11 located at the first work station a1 until the rotating shaft 231 reaches the above-mentioned rolling cutting position (at this time, the first pressure roller 211 is located upstream of the rolling cutting position, and the second pressure roller 221 is located downstream of the rolling cutting position. That is, the first pressure roller 211 is located upstream of the cutter 232, and the second pressure roller 221 is located downstream of the cutter 232). During this process, the rotating shaft 231 drives the cutter 232 and the air blowing component 233 on it to rotate, and the winding needle 11 located at the first work station a1 also rotates. When the rotating shaft 231 reaches the rolling cutting position, the cutter 232 and the air blowing element 233 on the rotating shaft 231 are opposite to the clearance portion 110 on the winding needle 11 located at the first work station a1, so that the cutter 232 cuts the material strip A at the clearance portion 110, and the air blowing air from the air blowing element 233 blows the upstream cut end A11 of the material strip A into the clearance portion 110, and the upstream cut end A11 of the material strip A is fixed in the clearance portion 110 of the winding needle 11 located at the first work station a1. After the upstream cutting end A11 of the material strip A is fixed in the clearance part 110 of the winding needle 11 located at the first station a1, under the driving action of the driving component 24, the moving seat 235 drives the rotating shaft 231 to move away from the winding needle 11 located at the first station a1 by a certain distance, so that the rotating shaft 231 drives the air blowing component 233 and the cutter 232 on it away from the winding needle 11 located at the first station a1, so as to avoid the air blowing component 233 and the cutter 232 interfering with the winding action of the winding needle 11 located at the first station a1.

[0063] It should be noted that the air blowing component 233 is not limited to being installed on the rotating shaft 231 and rotating with the rotating shaft 231. In other embodiments, the air blowing component 233 can also be installed on other components such as the moving seat 235, as long as it can blow the upstream cut end A11 of the material strip A into the clearance part 110 on the winding needle 11 located at the first station a1. This is not limited here.

[0064] Furthermore, the rolling feed assembly 23 also includes a rotation drive 237 mounted on the movable seat 235. This rotation drive 237 is connected to the rotating shaft 231, enabling it to drive the rotating shaft 231 to rotate relative to the movable seat 235. Optionally, the rotation drive 237 can be a motor. The output shaft of the rotation drive 237 is connected to the rotating shaft 231 via a belt drive structure, so that the rotational motion output by the rotation drive 237 is transmitted to the rotating shaft 231 via the belt drive structure, causing the rotating shaft 231 to rotate as well. Of course, the output shaft of the rotation drive 237 and the rotating shaft 231 can also be connected via other transmission structures, such as a gear transmission structure, as long as it can drive the rotating shaft 231 to rotate; this is not limited here.

[0065] In some embodiments, the drive assembly 24 drives the movable seat 235 to move along the horizontal direction X and the vertical direction Y, thereby causing the rolling feed assembly 23 to move closer to or away from the coiling needle 11 located at the first station a1. Optionally, the drive assembly 24 includes a base 241, a first linear drive unit 243, a mounting base 242, a second linear drive unit 245, and a transfer seat 244. The mounting base 242 is movably connected to the base 241 along the horizontal direction X. The first linear drive unit 243 is disposed on the base 241 and connected to the mounting base 242, such that the first linear drive unit 243 can drive the mounting base 242 to move relative to the base 241 along the horizontal direction X. The transfer seat 244 is movably connected to the mounting base 242 along the vertical direction Y. The second linear drive unit 245 is disposed on the mounting base 242 and connected to the transfer seat 244, such that the second linear drive unit 245 can drive the transfer seat 244 to move relative to the mounting base 242 along the vertical direction Y. The movable seat 235 of the rolling feed assembly 23 is mounted on the transfer seat 244, so that the movable seat 235 moves together with the transfer seat 244 (i.e., the rolling feed assembly 23 moves together with the transfer seat 244). It should be noted that the first linear drive unit 243 can be a linear drive module, as long as it can drive the mounting base 242 to move in the horizontal direction X; this is not limited here. The second linear drive unit 245 can be a linear drive module, as long as it can drive the transfer seat 244 to move in the vertical direction Y; this is not limited here.

[0066] It should be noted that the method of moving the drive seat 235 along the horizontal X and vertical Y directions to move the rotating shaft 231 closer to or away from the coiling needle 11 located at the first work station a1 is not limited to this method. In other embodiments, please refer to [link to other embodiments]. Figures 8 to 10 Alternatively, the rotating shaft 231 can be moved closer to or away from the coiling needle 11 located at the first workstation a1 by moving the movable seat 235 along a preset direction V. This preset direction V is inclined to both the horizontal direction X and the vertical direction Y. Specifically, the driving assembly 24 includes a fixed seat 246, a transfer seat 244, and a third linear drive unit 247. The transfer seat 244 is movably connected to the fixed seat 246 along the preset direction V. The third linear drive unit 247 is disposed on the fixed seat 246 and connected to the transfer seat 244, so that the third linear drive unit 247 can drive the transfer seat 244 to move relative to the fixed seat 246 along the preset direction V. The movable seat 235 of the rolling feed assembly 23 is mounted on the transfer seat 244, so that the movable seat 235 moves together with the transfer seat 244 along the preset direction V. It should be noted that the third linear drive unit 247 can be a linear drive module, as long as it can drive the transfer seat 244 to move along the preset direction V, and there is no limitation here.

[0067] It should be noted that the first roller pressing assembly 21 can be mounted on the transfer seat 244 of the drive assembly 24, so that when the drive assembly 24 drives the roller cutting and feeding assembly 23 to move closer to or away from the coiling needle 11 located at the first station a1, it can also drive the first roller pressing assembly 21 to move closer to or away from the coiling needle 11 located at the first station a1. In other words, the first roller pressing assembly 21 and the roller cutting and feeding assembly 23 share the same drive assembly 24, eliminating the need for an additional drive assembly 24 for the first roller pressing assembly 21, greatly simplifying the equipment structure, reducing the space required, and reducing the spatial layout difficulty of the various components of the roller cutting and feeding mechanism 20.

[0068] Specifically, in this embodiment, the first roller pressing assembly 21 includes a first mounting frame 212 and a first elastic element 214. The first pressure roller 211 is rotatably connected to the first mounting frame 212. The first mounting frame 212 is movably connected to the transfer seat 244, and the first elastic element 214 is connected between the first mounting frame 212 and the transfer seat 244. The first elastic element 214 provides a spring force that causes the first mounting frame 212 to have a tendency to move the first pressure roller 211 closer to the winding needle 11 located at the first workstation a1. Thus, as the transfer seat 244 moves closer to the winding needle 11 located at the first work station a1, the first pressure roller 211 first presses the passing material strip A against the winding needle 11 located at the first work station a1. As the transfer seat 244 continues to move closer to the winding needle 11 located at the first work station a1, it drives the first mounting frame 212 to overcome the elastic force provided by the first elastic element 214 and move relative to the transfer seat 244 until the transfer seat 244 drives the rotating shaft 231 to reach the aforementioned rolling cutting position. In other words, before the cutter 232 rolls the passing material strip A, the first pressure roller 211 first presses the passing material strip A against the winding needle 11 located at the first work station a1.

[0069] As the transfer seat 244 moves away from the winding needle 11 located at the first work station a1, the transfer seat 244 first drives the rotating shaft 231 away from the aforementioned rolling cutting position, causing the cutter 232 and the air blowing component 233 on the rotating shaft 231 to avoid the winding action of the winding needle 11 located at the first work station a1. During this process, under the elastic force provided by the first elastic component 214, the first mounting frame 212 moves back relative to the transfer seat 244, causing the first pressure roller 211 to continue pressing the passing material strip A against the winding needle 11. As the transfer seat 244 continues to move away from the winding needle 11 located at the first work station a1, after the first mounting frame 212 moves back relative to the transfer seat 244, it drives the first pressure roller 211 away from the winding needle 11 located at the first work station a1, causing the first pressure roller 211 to release the material strip A passing between the first pressure roller 211 and the winding needle 11.

[0070] In one embodiment, a first mounting bracket 212 is rotatably connected to a transfer seat 244 via a first pivot 215, and a first elastic element 214 is connected between the first mounting bracket 212 and the transfer seat 244. The first elastic element 214 provides a spring force that causes the first mounting bracket 212 to rotate, bringing the first pressure roller 211 closer to the winding needle 11 located at the first workstation a1. Optionally, the first elastic element 214 may be a tension spring.

[0071] Thus, as the transfer seat 244 moves closer to the winding needle 11 located at the first work station a1, the first pressure roller 211 first presses the material strip A against the winding needle 11 located at the first work station a1. As the transfer seat 244 continues to move closer to the winding needle 11 located at the first work station a1, the first mounting bracket 212 overcomes the elastic force provided by the first elastic member 214 and rotates upward relative to the transfer seat 244 (the stretching amount of the first elastic member 214 gradually increases), thereby providing space for the transfer seat 244 to continue to move closer to the winding needle 11 located at the first work station a1, until the transfer seat 244 drives the rotating shaft 231 to reach the above-mentioned rolling cutting position (at this time, the cutter 232 and the air blowing member 233 on the rotating shaft 231 are close enough to the winding needle 11 to ensure that the cutter 232 can cut the material strip A that passes by, and the airflow blown out by the air blowing member 233 can blow the upstream cut end A11 of the material strip A into the clearance part 110 of the winding needle 11).

[0072] As the transfer seat 244 moves away from the winding needle 11 located at the first work station a1, the transfer seat 244 first drives the rotating shaft 231 away from the aforementioned rolling cutting position, causing the cutter 232 and the air blowing component 233 on the rotating shaft 231 to avoid the winding action of the winding needle 11 located at the first work station a1. During this process, under the elastic force provided by the first elastic element 214, the first mounting frame 212 rotates downward relative to the transfer seat 244 (at this time, the tension of the first elastic element 214 gradually decreases), causing the first pressure roller 211 to continue to press the material strip A against the winding needle 11. As the transfer seat 244 continues to move away from the winding needle 11 located at the first work station a1, the first mounting frame 212 rotates back to its original position relative to the transfer seat 244 and then drives the first pressure roller 211 away from the winding needle 11 located at the first work station a1, causing the first pressure roller 211 to release the material strip A passing between the first pressure roller 211 and the winding needle 11.

[0073] It should be noted that the elastic floating effect of the first pressure roller 211 is not limited to the rotation of the first mounting frame 212 relative to the transfer seat 244. In another embodiment, the elastic floating effect of the first pressure roller 211 can also be achieved by moving the first mounting frame 212 relative to the transfer seat 244. Please refer to [link to relevant documentation]. Figures 8 to 10 As shown, specifically, the first mounting bracket 212 is movably connected to the transfer seat 244, and the first elastic element 214 abuts between the first mounting bracket 212 and the transfer seat 244. The first elastic element 214 provides a spring force that causes the first mounting bracket 212 to tend to move closer to the winding needle 11 located at the first work station a1. Optionally, the first elastic element 214 can be a compression spring or a cylinder. When the first elastic element 214 is a cylinder, the spring force provided by the first elastic element 214 is constant, ensuring that the pressure exerted by the first pressure roller 211 on the material strip A is also constant, thereby preventing the pressure on the material strip A from being too large or too small.

[0074] It should be noted that the second roller pressing assembly 22 can also be mounted on the transfer seat 244 of the drive assembly 24, so that when the drive assembly 24 drives the roller cutting and feeding assembly 23 to move closer to or away from the coiling needle 11 located at the first station a1, it can also drive the second roller pressing assembly 22 to move closer to or away from the coiling needle 11 located at the first station a1. In other words, the second roller pressing assembly 22 and the roller cutting and feeding assembly 23 share the same drive assembly 24, eliminating the need for an additional drive assembly 24 for the second roller pressing assembly 22, greatly simplifying the equipment structure, reducing the space required, and reducing the spatial layout difficulty of the various components of the roller cutting and feeding mechanism 20.

[0075] Specifically, in this embodiment, the second roller pressing assembly 22 includes a second mounting frame 222 and a second elastic member. The second pressure roller 221 is rotatably connected to the second mounting frame 222. The second mounting frame 222 is movably connected to the transfer seat 44, and the second elastic member is connected between the second mounting frame 222 and the transfer seat 44. The second elastic member provides a spring force that causes the second mounting frame 222 to tend to move the second pressure roller 221 closer to the winding needle 11 located at the first work station a1. Thus, as the transfer seat 244 moves closer to the winding needle 11 located at the first work station a1, the second pressure roller 221 first presses the passing material strip A against the winding needle 11 located at the first work station a1. As the transfer seat 244 continues to move closer to the winding needle 11 located at the first work station a1, the second moving seat overcomes the spring force provided by the second elastic member and moves relative to the transfer seat 44 until the transfer seat 244 drives the rotating shaft 231 to reach the aforementioned rolling cutting position. In other words, before the cutting blade 232 rolls the passing strip A, the second pressure roller 221 first presses the passing strip A against the winding needle 11 located at the first station a1.

[0076] As the transfer seat 244 moves away from the winding needle 11 located at the first work station a1, the transfer seat 244 first drives the rotating shaft 231 away from the aforementioned rolling cutting position, causing the cutter 232 and the air blowing component 233 on the rotating shaft 231 to avoid the winding action of the winding needle 11 located at the first work station a1. During this process, under the elastic force provided by the second elastic component, the second mounting bracket 222 performs a reset movement relative to the transfer seat 44, causing the second pressure roller 221 to continue pressing the passing material strip A against the winding needle 11 located at the first work station a1. As the transfer seat 244 continues to move away from the winding needle 11 located at the first work station a1, after the second mounting bracket 222 resets relative to the transfer seat 44, it drives the second pressure roller 221 away from the winding needle 11 located at the first work station a1, causing the second pressure roller 221 to release the material strip A passing between the second pressure roller 221 and the winding needle 11.

[0077] In one embodiment, the second mounting bracket 222 is rotatably connected to the transfer seat 244 via a second pivot shaft, and a second elastic member is connected between the second mounting bracket 222 and the transfer seat 244. This second elastic member provides a spring force that causes the second mounting bracket 222 to rotate towards the second pressure roller 221 near the winding needle 11 located at the first station a1. Optionally, the second elastic member may be a tension spring.

[0078] Thus, as the transfer seat 244 moves closer to the winding needle 11 located at the first work station a1, the second pressure roller 221 first presses the passing material strip A against the winding needle 11 located at the first work station a1. As the transfer seat 244 continues to move closer to the winding needle 11 located at the first work station a1, the second mounting bracket 222 overcomes the elastic force provided by the second elastic member and rotates downward relative to the transfer seat 244 (the stretch of the second elastic member gradually increases), thereby providing space for the transfer seat 244 to continue to move closer to the winding needle 11 located at the first work station a1, until the transfer seat 244 drives the rotating shaft 231 to reach the above-mentioned rolling cutting position (at this time, the cutter 232 and the air blowing member 233 on the rotating shaft 231 are close enough to the winding needle 11 to ensure that the cutter 232 can cut the passing material strip A, and the airflow blown out by the air blowing member 233 can blow the upstream cut end A11 of the material strip A into the clearance part 110 of the winding needle 11).

[0079] As the transfer seat 244 moves away from the winding needle 11 located at the first work station a1, the transfer seat 244 first drives the rotating shaft 231 away from the aforementioned rolling cutting position, causing the cutter 232 and the air blowing component 233 on the rotating shaft 231 to avoid the winding action of the winding needle 11 located at the first work station a1. During this process, under the elastic force provided by the second elastic element, the second mounting bracket 222 rotates upward relative to the transfer seat 244 (at this time, the tension of the second elastic element gradually decreases), so that the second pressure roller 221 continues to press the material strip A against the winding needle 11. As the transfer seat 244 continues to move away from the winding needle 11 located at the first work station a1, after the second mounting bracket 222 rotates and resets relative to the transfer seat 244, it drives the second pressure roller 221 away from the winding needle 11 located at the first work station a1, so that the second pressure roller 221 releases the material strip A passing between the second pressure roller 221 and the winding needle 11.

[0080] It should be noted that the elastic floating effect of the second pressure roller 221 is not limited to the rotation of the second mounting frame 222 relative to the transfer seat 244. In another embodiment, the elastic floating effect of the second pressure roller 221 can also be achieved by moving the second mounting frame 222 relative to the transfer seat 244. Specifically, the second mounting frame 222 is movably connected to the transfer seat 244, and the second elastic member abuts between the second mounting frame 222 and the transfer seat 244. This second elastic member is used to provide a spring force that causes the second mounting frame 222 to have a tendency to move closer to the winding needle 11 located at the first work station a1. Optionally, the second elastic member can be a compression spring or a cylinder. When the second elastic member is a cylinder, the spring force provided by the second elastic member is constant, so that the pressure of the second pressure roller 221 against the material strip A is also constant, thereby avoiding excessive or insufficient pressure on the material strip A.

[0081] It should be noted that in the embodiment where the first roller pressing assembly 21 and the second roller pressing assembly 22 share the same drive assembly 24 with the rolling and feeding assembly 23, the movement stroke of the first mounting frame 212 relative to the transfer seat 244 and the movement stroke of the second mounting frame 222 relative to the transfer seat 244 can be designed according to the actual working conditions. On the one hand, this ensures that as the transfer seat 244 approaches the winding needle 11 located at the first work station a1, the first pressure roller 211 and the second pressure roller 221 first press the passing material strip A against the winding needle 11 located at the first work station a1, and then the rotating shaft 231 reaches the rolling and cutting position. Then, the cutter 232 on the rotating shaft 231 cuts the passing material strip A, and the airflow blown by the air blowing element 233 on the rotating shaft 231 blows the upstream cut end A11 of the material strip A into the clearance part 110 of the winding needle 11. On the other hand, this ensures that during the transfer... As the seat 244 moves away from the winding needle 11 located at the first station a1, the rotating shaft 231 first leaves the rolling cutting position (so that the cutter 232 and the air blowing element 233 on the rotating shaft 231 avoid the winding action of the winding needle 11 located at the first station a1), and then the first pressure roller 211 leaves the winding needle 11 located at the first station a1 (that is, the first pressure roller 211 releases the pressure on the passing material strip A, so that the electrode material strip can be smoothly inserted into the gap between the material strip A and the winding needle 11 located at the first station a1 and / or between two layers of material strip A). ​​After the winding needle 11 located at the first station a1 winds the material strip A at least one turn, the second pressure roller 221 leaves the winding needle 11 located at the first station a1 (that is, the second pressure roller 221 releases the pressure on the passing material strip A), thereby preventing the material strip A on the winding needle 11 from becoming loose or even falling off when winding the first turn of material strip A.

[0082] Please see Figures 8 to 11As shown in the embodiment of this application, the first roller pressing assembly 21 further includes a rotary drive 216 mounted on the first mounting bracket 212. The rotary drive 216 is connected to the first pressure roller 211, enabling the rotary drive 216 to drive the first pressure roller 211 to rotate. Thus, after the strip A is cut, the strip A pressed against the winding needle 11 at the first station a1 by the first pressure roller 211 loses its downstream traction. At this time, the rotary drive 216 drives the first pressure roller 211 to rotate, and the rotation direction of the first pressure roller 211 is opposite to the rotation direction of the winding needle 11 at the first station a1. This causes the first pressure roller 211 and the winding needle 11 at the first station a1 to jointly drive the strip A between them to move downstream and be wound onto the outer circumferential surface of the winding needle 11, thereby greatly reducing the risk of the upstream cut end A11 of the strip A detaching from the clearance portion 110 of the winding needle 11. Optionally, the rotary drive 216 can be a motor.

[0083] Furthermore, the first roller pressing assembly 21 also includes a driving wheel, a driven wheel 217, and a transmission belt 218. The driving wheel is mounted on the output shaft of the rotary drive 216, enabling the rotary drive 216 to drive the driving wheel to rotate. The driven wheel 217 is mounted on the first pressure roller 211, enabling the driven wheel 217 to drive the first pressure roller 211 to rotate. The transmission belt 218 is sleeved between the driving wheel and the driven wheel 217, so that when the driving wheel rotates, it can drive the driven wheel 217 to rotate via the transmission belt 218. Thus, when it is necessary to drive the first pressure roller 211 to rotate, the rotary drive 216 drives the driving wheel to rotate, the driving wheel drives the driven wheel 217 to rotate via the transmission belt 218, and the driven wheel 217 then drives the first pressure roller 211 to rotate.

[0084] It should be noted that the rotary drive 216 is not limited to being connected to the first pressure roller 211 by a belt drive structure. In other embodiments, the rotary drive 216 can also be connected to the first pressure roller 211 by other transmission structures, such as gear transmission structures, as long as it can drive the first pressure roller 211 to rotate in the opposite direction to the winding needle 11 located at the first station a1. No specific characteristics are limited here.

[0085] In the embodiments of this application, the rolling feed assembly 23 further includes an auxiliary air blowing component (not shown) located upstream of the cutter 232. This auxiliary air blowing component is used to blow air into the clearance portion 110 on the coiling needle 11 at the first station a1, so as to blow the upstream cut end A11 formed after the material strip A is cut by the cutter 232 into the clearance portion 110 on the coiling needle 11 at the first station a1. In this way, by using the air blowing component 233 and the auxiliary air blowing component to blow air into the clearance portion 110 on the coiling needle 11 at the first station a1, it is ensured that the upstream cut end A11 of the material strip A is blown into the clearance portion 110 on the coiling needle 11 at the first station a1 quickly and accurately.

[0086] In a specific embodiment, the auxiliary air blowing component can be controlled to move close to the winding needle 11 located at the first station a1 to the upstream side of the cutter 232, so that the auxiliary air blowing component can accurately blow the upstream cut end A11 of the material strip A into the clearance portion 110 on the winding needle 11 located at the first station a1.

[0087] Optionally, the auxiliary air blowing component is mounted on the aforementioned movable base 235. When the drive assembly 24 drives the movable base 235 closer to the winding needle 11 located at the first workstation a1, the auxiliary air blowing component and the rotating shaft 231 on the movable base 235, as well as the cutter 232 and air blowing component 233 on the rotating shaft 231, also move closer to the winding needle 11 located at the first workstation a1. When the drive assembly 24 drives the movable base 235 away from the winding needle 11 located at the first workstation a1, the auxiliary air blowing component and the rotating shaft 231 on the movable base 235, as well as the cutter 232 and air blowing component 233 on the rotating shaft 231, also move away from the winding needle 11 located at the first workstation a1. In this way, there is no need to configure an additional drive assembly 24 for the auxiliary air blowing component, which helps to simplify the structure, reduce the space required, and reduce the difficulty of spatial layout of each component.

[0088] Of course, in other embodiments, a driving unit can also be configured for the auxiliary air blowing component. The driving unit can be used to drive the auxiliary air blowing component to approach or move away from the winding needle 11 located at the first station a1. As long as the air blowing component 233 and the air blowing component together can blow the upstream cutting end A11 of the material strip A to the clearance part 110 on the winding needle 11 located at the first station a1, it is not limited here.

[0089] Specifically, the auxiliary air blowing component has a second air knife for blowing out airflow. This second air knife can be a strip-shaped air outlet groove extending longitudinally in a direction parallel to the axial direction of the rotating shaft 231, or it can be a plurality of air outlet holes spaced apart in a direction parallel to the axial direction of the rotating shaft 231. As long as it can accurately and quickly blow the upstream cut end A11 of the material strip A into the clearance portion 110 on the winding needle 11 located at the first station a1 when the material strip A is cut, it is not limited here.

[0090] Please see Figures 12 to 14 In the embodiments of this application, the winding needle 11 further has a first sidewall 111 and a second sidewall 112 serving as opposite sidewalls of the clearance portion 110. An air blowing section B1 is provided on the first sidewall 111, which blows air onto the second sidewall 112 to press the upstream cut end A11 of the material strip A entering the clearance portion 110 onto the second sidewall 112. This fixes the upstream cut end A11 of the material strip A entering the clearance portion 110 onto the second sidewall 112, allowing the winding needle 11 to wind the material strip A around its outer circumference when rotating.

[0091] Thus, when the cutter 232 cuts the passing strip A, under the action of the airflow blown out by the air blowing component 233, the upstream cut end A11 of the strip A is blown into the clearance portion 110 of the winding needle 11 located at the first station a1. At this time, the upstream cut end A11 of the strip A, which has entered the clearance portion 110, is tightly attached to the second side wall 112 under the action of the airflow blown out by the air blowing component B1 on the first side wall 111. That is, the upstream cut end A11 of the strip A is fixed on the second side wall 112. On the one hand, the cutting of the strip A and its fixation on the winding needle 11 are completed without stopping the downstream conveying of the strip A and while the winding needle 11 continues to rotate, which greatly improves the production efficiency; on the other hand, the needle threading and film-coating actions are eliminated, which greatly simplifies the structure of the winding equipment.

[0092] It should be noted that the airflow blown out by the air blowing part B1 is used to fix the upstream cut end A11 of the material strip A on the second side wall 112, which avoids the need to install a clamping mechanism for clamping the material strip A inside the winding needle 11, greatly simplifies the structure of the winding needle 11, and reduces the design difficulty and manufacturing cost of the winding needle 11.

[0093] Specifically, in the embodiment, during the rotation of the winding needle 11 at the first station a1, when the clearance portion 110 on the winding needle 11 rotates to be opposite to the cutter 232 (that is, when the clearance portion 110 on the winding needle 11 rotates to the position where the cutter 232 cuts the material strip A), the first side wall 111 is located downstream of the second side wall 112, so that the upstream cut end A11 of the material strip A can be bent directly toward the second side wall 112 inside the clearance portion 110 under the action of the airflow blown out by the air blowing member 233, and stick tightly to the second side wall 112 under the action of the airflow blown out by the air blowing member B1, ensuring that the upstream cut end A11 of the material strip A can be accurately and quickly blown and stick tightly to the second side wall 112.

[0094] Specifically, in this embodiment, the winding needle 11 has an air blowing channel B3, which is used to communicate with an external air source. A first cover plate 117 is provided inside the clearance portion 110. The surface of the first cover plate 117 facing the second sidewall 112 serves as the first sidewall 111, and has multiple air blowing holes serving as the air blowing portion B1. Each air blowing hole communicates with the air blowing channel B3. Thus, high-pressure gas supplied by the external air source enters the air blowing channel B3 and is then blown out through the air blowing holes, thereby pressing the upstream cut end A11 of the material strip A against the second sidewall 112. It should be noted that the external air source is any air supply device capable of providing high-pressure gas, and is not specifically limited here.

[0095] It should be noted that by providing a first cover plate 117 inside the clearance portion 110 and forming multiple air holes on the first cover plate 117, the airflow blown out through each air hole presses the upstream cut end A11 of the material strip A onto the second side wall 112. Therefore, when the first cover plate 117 wears out or is damaged during long-term use, only the first cover plate 117 needs to be replaced, avoiding the need to replace the entire coil needle 11, greatly reducing maintenance difficulty and cost. Optionally, the first cover plate 117 can be locked and fixed inside the clearance portion 110 by threaded fasteners (e.g., screws) to facilitate the installation and removal of the first cover plate 117.

[0096] In the embodiments of this application, an adsorption part B2 for air suction is provided on the second sidewall 112. The adsorption part B2 is used to adsorb the upstream cut end A11 of the material strip A onto the second sidewall 112 using the negative pressure generated by air suction. Thus, after the upstream cut end A11 of the material strip A enters the clearance part 110 of the winding needle 11, the airflow from each air blowing hole blows the upstream cut end A11 of the material strip A onto the second sidewall 112. At the same time, the adsorption part B2 on the second sidewall 112 adsorbs the upstream cut end A11 of the material strip A onto the second sidewall 112, thereby making the upstream cut end A11 of the material strip A more quickly and firmly fixed onto the second sidewall 112.

[0097] Specifically, in this embodiment, a suction channel B4 is provided inside the winding needle 11, which is used to communicate with an external negative pressure source. A second cover plate 118 is provided inside the clearance portion 110. The surface of the second cover plate 118 facing the first sidewall 111 serves as the aforementioned second sidewall 112, and it has multiple suction holes serving as the adsorption portion B2, each of which communicates with the suction channel B4. Thus, the external negative pressure source evacuates the suction channel B4, placing it in a negative pressure state. The negative pressure within the suction channel B4 is transmitted to each suction hole, thereby adsorbing and fixing the upstream cut end A11 of the material strip A through the negative pressure generated at each suction hole. It should be noted that the external negative pressure source can be a vacuum device capable of generating negative pressure, and is not specifically limited here.

[0098] It should be noted that by setting a second cover plate 118 inside the clearance portion 110 and forming multiple suction holes on the second cover plate 118, the negative pressure generated at each suction hole adsorbs and fixes the upstream cut end A11 of the material strip A onto the second cover plate 118. Therefore, when the second cover plate 118 wears out or is damaged during long-term use, only the second cover plate 118 needs to be replaced, avoiding the need to replace the entire coil needle 11, greatly reducing maintenance difficulty and cost. Optionally, the second cover plate 118 can be locked and fixed inside the clearance portion 110 by threaded fasteners (e.g., screws) to facilitate the installation and removal of the second cover plate 118.

[0099] Furthermore, the needle winding mechanism 10 also includes a connecting shaft 12 (see... Figure 12 ) and air slip ring 13 (see Figure 12 The winding needle 11 is mounted on the connecting shaft 12 so that the connecting shaft 12 can drive the winding needle 11 to rotate. An air slip ring 13 is mounted on the connecting shaft 12. The aforementioned blowing channel B3 is connected to an external air source through the air slip ring 13, and the suction channel B4 is connected to an external negative pressure source through the air slip ring 13. Thus, by using the air slip ring 13 to connect the blowing channel B3 to the external air source and the suction channel B4 to the external negative pressure source, the pipe winding phenomenon is avoided when the connecting shaft 12 drives the winding needle 11 to rotate.

[0100] Specifically, the air slip ring 13 includes a stator 131 and a rotor 133. The stator 131 is fixed, and the rotor 133 is mounted on the connecting shaft 12 to rotate synchronously with the connecting shaft 12. The stator 131 has a first air connector D1 and a second air connector D2, and the rotor 133 has a third air connector D3 and a fourth air connector D4. The first air connector D1 and the third air connector D3 are connected through air passages inside the stator 131 and the rotor 133. The needle coil 11 has a fifth air connector D5 that communicates with the blowing passage B3 and a sixth air connector D6 that communicates with the suction passage B4.

[0101] The first air connector D1 is used to connect to an external air source through a pipeline, and the third air connector D3 is connected to the fifth air connector D5 through a pipeline, so that the high-pressure gas provided by the external air source enters the blowing channel B3 in sequence through the first air connector D1, stator 131, rotor 133, third air connector D3 and fifth air connector D5, and is then blown out through each blowing hole.

[0102] The second air connector D2 and the fourth air connector D4 are connected through air passages inside the stator 131 and rotor 133. The second air connector D2 is connected to an external negative pressure source through a pipeline, and the fourth air connector D4 is connected to the sixth air connector D6 through a pipeline. This allows the external negative pressure source to sequentially evacuate the suction channel B4 through the second air connector D2, stator 131, rotor 133, fourth air connector D4, and sixth air connector D6, creating a negative pressure state in the suction channel B4. This negative pressure is then transmitted to each suction port, thereby using the negative pressure generated at each suction port to adsorb the upstream cut-off end A11 of the material strip A. It should be noted that the specific structure of the stator 131 and rotor 133 of the air slip ring 13 can adopt relatively mature existing technologies and is not limited here.

[0103] It should be noted that the clearance portion 110 on the winding needle 11 is not limited to one; for other embodiments, please refer to [link / reference]. Figure 14 and Figure 15As shown, the winding needle 11 has at least two clearance portions 110, which are spaced apart circumferentially along the winding needle 11. Thus, when it is necessary to cut the material strip A, the winding needle 11 can be rotated until any clearance portion 110 is opposite to the cutter 232 and the air blowing element 233, greatly reducing the risk that the clearance portion 110 on the winding needle 11 has not yet rotated to the position opposite to the cutter 232 when the cutter 232 cuts the material strip A.

[0104] Please continue reading Figures 12 to 14 As shown, in some embodiments, the coiling needle 11 includes a first outer needle 113 and a second outer needle 114 arranged opposite to each other. The aforementioned clearance portion 110 is formed between the first outer needle 113 and the second outer needle 114. The outer sidewalls of the first outer needle 113 and the second outer needle 114, which are facing away from each other, are joined together to form the aforementioned outer peripheral surface. One of the inner sidewalls of the first outer needle 113 and the second outer needle 114, which face each other, is the aforementioned first sidewall 111, and the other is the aforementioned second sidewall 112.

[0105] Furthermore, the coiling needle 11 also includes a coiling needle holder 119, a first fixed needle 115, and a second fixed needle 116. The coiling needle holder 119 is mounted on the connecting shaft 12, allowing the coiling needle holder 119 to rotate synchronously with the connecting shaft 12. One end of both the first fixed needle 115 and the second fixed needle 116 is mounted on the coiling needle holder 119, thereby allowing the first fixed needle 115 and the second fixed needle 116 to rotate synchronously with the coiling needle holder 119. A first outer needle 113 is disposed on the first fixed needle 115, and a second outer needle 114 is disposed on the second fixed needle 116. A gap is formed between the first outer needle 113 and the second outer needle 114. The portion of this gap located on the same side of the first fixed needle 115 and the second fixed needle 116 is a clearance portion 110, and the portion of this gap located on the other side of the first fixed needle 115 and the second fixed needle 116 is another clearance portion 110. Specifically... Figure 14 In the middle, the part of the slit located to the left of the first fixed needle 115 and the second fixed needle 116 is a clearance part 110, and the part of the slit located to the right of the first fixed needle 115 and the second fixed needle 116 is another clearance part 110.

[0106] It should be noted that the gap between the first outer needle 113 and the second outer needle 114 is not limited to serving as the clearance portion 110; the clearance portion 110 can also be formed in other parts of the coiled needle 11. Please refer to [link / reference]. Figure 15 As shown, optionally, the first outer needle 113 has a groove on the outer side wall opposite to the second outer needle 114, the groove serving as a clearance portion 110; and / or, the second outer needle 114 has a groove on the outer side wall opposite to the first outer needle 113, the groove serving as a clearance portion 110.

[0107] It should also be noted that after the core on the winding needle 11 is wound, the core needs to be clamped and fixed using clamping needles. Then, the winding needle 11 is pulled out of the core to separate it from the winding needle 11 (at this time, the air blowing part B1 stops blowing air, and the suction part B2 stops generating negative pressure), thus completing the unloading of the core. The grooves on the first outer needle 113 and / or the second outer needle 114 can also be used for clamping needle insertion, thereby facilitating the clamping needles to clamp the core on the winding needle 11.

[0108] Please continue reading Figures 1 to 3 As shown in the embodiments of this application, the winding device further includes a turret 30, and the number of needle winding mechanisms 10 is at least two. The turret 30 is rotatably arranged, and the needles 11 of each needle winding mechanism 10 are rotatably connected to the turret 30 via a connecting shaft 12. As the turret 30 rotates, the needles 11 of each needle winding mechanism 10 sequentially pass through a first station a1 and a second station a2. When the needle 11 located at the first station a1 rotates with the turret 30 to the second station a2, the other needle 11 rotates with the turret 30 back to the first station a1.

[0109] Thus, when the core winding on the winding needle 11 at the first station a1 is completed, the material strip A continues to be conveyed downstream. The turret 30 drives the winding needle 11 at the first station a1 to rotate to the second station a2, and another winding needle 11 rotates with the turret 30 to the first station a1. At this time, the winding needle 11 at the first station a1 rotates around its own axis. At the same time, the first roller pressing assembly 21 drives the first pressure roller 211 to press the part of the material strip A upstream of the cutter 232 onto the winding needle 11 at the first station a1. The second roller pressing assembly 22 drives the second pressure roller 221 to press the part of the material strip A downstream of the cutter 232 onto the winding needle 11 at the first station a1. The rotating shaft 231 gradually moves closer to the winding needle 11 at the first station a1 to the rolling cutting position. The clearance part 110 on the winding needle 11 at the first station a1 rotates to be opposite to the cutter 232 and the air blowing part 233 on the rotating shaft 231. At this time, the rotating shaft 231 drives the cutter 232 to rotate and contact the material strip A, thereby cutting the material strip A (i.e., the cutter 232 is used to roll and cut the material strip A that is passing by). Then, under the action of the airflow blown out by the air blowing component 233, the upstream cut end A11 of the material strip A is blown into the clearance part 110 of the winding needle 11 located at the first station a1, and then, under the combined action of the air blowing action of the air blowing part B1 and the negative pressure generated by the adsorption part B2, it is tightly attached to the second side wall 112 inside the clearance part 110.

[0110] After the upstream cut end A11 of the material strip A is blown into the clearance portion 110 of the winding needle 11 located at the first station a1, under the driving action of the drive assembly 24, the rotating shaft 231 gradually moves away from the winding needle 11 located at the first station a1, so that the cutter 232 and the air blowing element 233 on the rotating shaft 231 move away from the winding needle 11 located at the first station a1, thereby avoiding the winding needle 11. Then, the first roller pressing assembly 21 drives the first pressure roller 211 away from the winding needle 11 located at the first station a1, and inserts the electrode sheet between the outer peripheral surface of the material strip A and the winding needle 11 located at the first station a1 and / or between the two layers of material strip A, so that the electrode sheet is wound onto the winding needle 11 located at the first station a1 along with the material strip A. Then, after the winding needle 11 at the first station a1 has wound the material strip A to its outer circumference at least one turn, the second roller pressing assembly 22 drives its second pressure roller 221 to leave the winding needle 11 at the first station a1. During this process, the winding needle 11 at the first station a1 continues to rotate to wind the material strip A to its outer circumference to form a core.

[0111] After the material strip A is cut by the cutter 232, the winding needle 11 located at the second station a2 continues to wind until the material strip A to be cut is completely wound onto its outer circumference. Then, the core on the winding needle 11 located at the second station a2 is subjected to actions such as applying finishing adhesive and / or unloading.

[0112] In a specific embodiment, the winding equipment further includes a first unwinding mechanism, a second unwinding mechanism, a third unwinding mechanism, a fourth unwinding mechanism, a first inserting mechanism 40, and a second inserting mechanism 50.

[0113] A first unwinding mechanism outputs a first diaphragm A1 to a first station a1; a second unwinding mechanism outputs a first electrode strip A3 to a first station a1; a third unwinding mechanism outputs a second diaphragm A2 to a first station a1; and a fourth unwinding mechanism outputs a second electrode strip A4 to a first station a1. A first inserting mechanism 40 is arranged between the second unwinding mechanism and the first station a1. This first inserting mechanism 40 cuts the passing first electrode strip A3 and feeds the starting end of the first electrode strip A3 to the winding needle 11 located at the first station a1, so that the winding needle 11 at the first station a1 can wind the first electrode strip A3 when it rotates. A second inserting mechanism 50 is arranged between the fourth unwinding mechanism and the first station a1. The second insert mechanism 50 is used to cut off the passing second electrode strip A4 and feed the starting end of the second electrode strip A4 to the winding needle 11 located at the first station a1, so that the winding needle 11 located at the first station a1 can wind the second electrode strip A4 when it rotates.

[0114] Thus, in actual use, the first unwinding mechanism, the second unwinding mechanism, the third unwinding mechanism, and the fourth unwinding mechanism respectively unwind the first diaphragm A1, the first electrode strip A3, the second diaphragm A2, and the second electrode strip A4 to the winding needle 11 located at the first station a1. The winding needle 11 located at the first station a1 rotates to wind the first diaphragm A1, the first electrode strip A3, the second diaphragm A2, and the second electrode strip A4 to form a core. It should be noted that the aforementioned strip A refers to the first diaphragm A1 and the second diaphragm A2.

[0115] When the core winding on the winding needle 11 at the first station a1 is completed, firstly, the first insert mechanism 40 cuts off the first electrode strip A3, and the second insert mechanism 50 cuts off the second electrode strip A4. Then, the turret 30 rotates until it drives the winding needle 11 at the first station a1 to the second station a2, and another winding needle 11 reaches the first station a1 and rotates around its own axis. Simultaneously, the first roller pressing assembly 21 drives the first pressure roller 211 to press the first diaphragm A1 and the second diaphragm A2 located upstream of the cutter 232 onto the winding needle 11 located at the first station a1. The second roller pressing assembly 22 drives the second pressure roller 221 to press the first diaphragm A1 and the second diaphragm A2 located downstream of the cutter 232 onto the winding needle 11 located at the first station a1. The rotating shaft 231 gradually moves closer to the winding needle 11 located at the first station a1 to the rolling cutting position. The clearance portion 110 on the winding needle 11 located at the first station a1 rotates to be opposite to the cutter 232 and the air blowing element 233 on the rotating shaft 231. At this time, the rotating shaft 231 drives the cutter 232 to rotate and contact the first diaphragm A1 and the second diaphragm A2, thereby cutting the first diaphragm A1 and the second diaphragm A2 (i.e., using the cutter 232 to roll-cut the passing first diaphragm A1 and the second diaphragm A2). Then, under the action of the airflow blown out by the air blowing component 233, the upstream cut-off end A11 of the first diaphragm A1 and the second diaphragm A2 is blown into the clearance part 110 of the winding needle 11 located at the first work station a1, and then, under the combined action of the air blowing of the air blowing part B1 and the negative pressure generated by the adsorption part B2, it is tightly attached to the second side wall 112 inside the clearance part 110.

[0116] After the upstream cut-off ends A11 of the first diaphragm A1 and the second diaphragm A2 are blown into the clearance portion 110 of the winding needle 11 located at the first station a1, the rotating shaft 231 gradually moves away from the winding needle 11 located at the first station a1 under the driving action of the driving assembly 24. This causes the cutter 232 and the air blowing element 233 on the rotating shaft 231 to move away from the winding needle 11 located at the first station a1, thus avoiding the winding needle 11. Then, the first roller pressing assembly 21 drives the first pressure roller 211 away from the winding needle 11 located at the first station a1, and then the first inserting mechanism 40 inserts the starting end of the first electrode strip A3 between the first diaphragm A1 and the second diaphragm A2, so that the first electrode strip A3 is wound onto the winding needle 11 located at the first station a1 together with the first diaphragm A1 and the second diaphragm A2. Simultaneously, the second insertion mechanism 50 inserts the starting end of the second electrode strip A4 between the second diaphragm A2 and the winding needle 11 located at the first station a1, so that the second electrode strip A4 is wound onto the winding needle 11 located at the first station a1 along with the second diaphragm A2. Then, after the winding needle 11 located at the first station a1 has wound the first diaphragm A1 and the second diaphragm A2 to its outer circumferential surface at least one turn, the second roller pressing assembly 22 drives its second pressure roller 221 to leave the winding needle 11 located at the first station a1. During this process, the winding needle 11 located at the first station a1 continues to rotate to wind the first diaphragm A1, the second diaphragm A2, the first electrode strip A3, and the second electrode strip A4 onto its outer circumferential surface to form a core.

[0117] It should be noted that the winding process described above is only one embodiment. Of course, other winding processes can be used in other embodiments, as long as the winding and forming of the core can be achieved, and no limitation is made here.

[0118] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A rolling cutting and feeding mechanism, characterized in that, include: Roller assembly is used to press the strip against the needle; and A rotary cutting and feeding assembly includes a rotating shaft, a cutter, and an air blowing component. The cutter is mounted on the rotating shaft, which can be controlled to rotate around its own axis to drive the cutter to rotate so that it is opposite to the coiling needle. When the rotating shaft drives the cutter to rotate to be opposite the winding needle, the cutter cuts the material strip along the way, and the air blowing component blows airflow onto the winding needle to blow the upstream cut end of the material strip into the winding needle.

2. The rolling feed mechanism according to claim 1, wherein the air blowing component is disposed on the rotating shaft.

3. The rolling and feeding mechanism according to claim 1, characterized in that, The rolling feed assembly also includes a heating element disposed on the cutter, the heating element being used to heat the cutter.

4. The rolling feed mechanism according to claim 3, characterized in that, The rolling feed assembly also includes an electric slip ring mounted on the rotating shaft, and the heating element is electrically connected to an external power source through the electric slip ring.

5. The rolling feed mechanism according to claim 1, characterized in that, The rolling feed assembly also includes a movable seat, and the rotating shaft is rotatably connected to the movable seat; The rolling feed mechanism further includes a drive assembly, and the movable seat is mounted on the drive end of the drive assembly so that the drive assembly can drive the movable seat to move closer to or away from the coil needle.

6. The rolling feed mechanism according to claim 5, characterized in that, The driving component is used to drive the movable base to move in the horizontal and vertical directions; or The driving component is used to drive the movable seat to move along a preset direction, which is inclined to both the horizontal and vertical directions.

7. The rolling feed mechanism according to any one of claims 1 to 6, characterized in that, The rolling assembly includes a first rolling assembly having a first pressure roller rotatable about its own axis. The first rolling assembly can controllably drive the first pressure roller to press the portion of the strip upstream of the cutter against the winding needle.

8. The rolling feed mechanism according to claim 7, characterized in that, The roll forming assembly further includes a second roll forming assembly having a second pressure roller rotatable about its own axis. The second roll forming assembly can controllably drive the second pressure roller to press the portion of the strip downstream of the cutter against the winding needle.

9. The rolling feed mechanism according to claim 8, characterized in that, The roller pressing assembly has a first state, a second state, and a third state; When the roller pressing assembly is in the first state, the first roller pressing assembly drives the first pressure roller to press the passing material strip against the winding needle, and the second roller pressing assembly drives the second pressure roller to press the passing material strip against the winding needle. The rotating shaft can move closer to or further away from the winding needle in a controlled manner. When the roller pressing assembly is in the second state, the first roller pressing assembly drives the first pressure roller to release the material strip that is passing through, and the second pressure roller of the second roller pressing assembly presses the material strip that is passing through against the winding needle; When the roller pressing assembly is in the third state, the first roller pressing assembly drives the first pressure roller to release the material belt it passes through, and the second roller pressing assembly drives the second pressure roller to release the material belt it passes through.

10. The rolling feed mechanism according to claim 8, characterized in that, The rolling feed assembly further includes a movable seat, and the rotating shaft is rotatably connected to the movable seat; the rolling feed mechanism further includes a drive assembly, and the movable seat is mounted on the drive end of the drive assembly, so that the drive assembly can drive the movable seat to move closer to or away from the coiling needle. The first roll forming assembly and / or the second roll forming assembly are mounted on the drive end of the drive assembly.

11. The rolling feed mechanism according to claim 7, characterized in that, The first roller pressing assembly further includes a first mounting frame and a rotary drive. The first mounting frame is controllably accessible to or away from the needle winding. The first pressure roller is rotatably connected to the first mounting frame. The rotary drive is mounted on the first mounting frame and connected to the first pressure roller so that the rotary drive can drive the first pressure roller to rotate.

12. The rolling feed mechanism according to any one of claims 1 to 6, characterized in that, The rolling feed assembly also includes an auxiliary air blowing component located upstream of the cutter. The auxiliary air blowing component is used to blow airflow onto the coil needle to work together with the air blowing component to blow the upstream cut end of the strip into the coil needle.

13. A winding device, characterized in that, Includes the rolling feed mechanism as described in any one of claims 1 to 12.

Images