Winding needle mechanism and winding equipment

Abstract

The utility model relates to a winding needle mechanism and winding equipment. The winding needle mechanism comprises a winding needle assembly which is provided with a crack and a clamping face serving as one side wall of the crack, and the winding needle assembly can controllably rotate to wind a material belt; the fixed bracket is mounted on the winding needle assembly; the rotating support is rotatably connected to the fixed support, and the material clamping rod is located in the crack and installed on the rotating support so as to rotate between a material clamping position abutting against the clamping face and a loosening position separated from the clamping face along with the rotating support; the two ends of the third elastic piece are connected with the fixed support and the rotating support respectively so as to provide elastic force for driving the rotating support to drive the material clamping rod to rotate to the material clamping position or the loosening position.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing equipment, in particular to a winding needle mechanism and winding equipment. Background Art

[0002] The battery cell is an important component of the battery and can be made by winding each layer of material strip (for example, four layers of material strips including the diaphragm, anode plate, diaphragm and cathode plate) on a winding pin.

[0003] In the prior art, each layer of material tape is put together by the film-joining mechanism and then enters the winding needle located in the first station for winding. After the winding needle located in the first station winds one battery cell, it switches to the second station, and the other winding needle switches to the first station. At this time, each layer of material tape is put together by the film-joining mechanism and passes through the first station. The winding needle located in the first station extends from the turret to complete the threading (that is, the material tape is inserted into the slit of the winding needle). Then, the inner clamping needle in the winding needle clamps the material tape, and then the cutter located between the first station and the second station cuts the material tape. Then, the winding needle located in the first station starts to wind the next battery cell. In summary, the winding operation process in the prior art is complicated, which leads to a complex structure of the winding equipment and low production efficiency. Utility Model Content

[0004] Based on this, it is necessary to provide a winding needle mechanism and winding equipment that improve the above defects in order to address the problem that the winding operation process in the prior art is complicated, resulting in a complex structure of the winding equipment and low production efficiency.

[0005] A needle winding mechanism, comprising:

[0006] A winding needle assembly having a clamping gap and a clamping surface serving as a side wall of the clamping gap, wherein the winding needle assembly can be controlled to rotate to wind the material strip;

[0007] A fixed bracket, mounted on the needle winding assembly;

[0008] A rotating bracket is rotatably connected to the fixed bracket,

[0009] a clamping rod, located in the clamping gap and mounted on the rotating bracket, so as to rotate with the rotating bracket between a clamping position in contact with the clamping surface and a release position separated from the clamping surface; and

[0010] A third elastic member, wherein both ends of the third elastic member are respectively connected to the fixed bracket and the rotating bracket to provide elastic force to drive the rotating bracket to drive the clamping rod to rotate to the clamping position or the release position.

[0011] In one embodiment, the fixed bracket has a limiting portion. When the rotating bracket drives the clamping rod to rotate to the release position, the limiting portion cooperates with the rotating bracket stop to prevent the rotating bracket from driving the clamping rod to rotate away from the clamping surface.

[0012] In one embodiment, the needle winding assembly includes a needle winding seat, a first fixed needle, a second fixed needle, a first outer needle and a second outer needle, the needle winding seat can rotate in a controlled manner, one end of the first fixed needle and the second fixed needle are both installed on the needle winding seat and arranged opposite to each other; the first outer needle is arranged on the first fixed needle, the second outer needle is arranged on the second fixed needle, and the gap is formed between the first outer needle and the second outer needle, the side surface of the first outer needle facing the second outer needle includes the clamping surface, and the fixing bracket is installed on the first fixed needle and / or the second fixed needle.

[0013] In one embodiment, the first outer needle and the second outer needle can be controlled to move closer to or farther away from each other relative to the first fixing needle and the second fixing needle;

[0014] The needle winding mechanism also includes a reset block installed on the first outer needle or the second outer needle. When the first outer needle and the second outer needle approach each other, the first outer needle or the second outer needle drives the reset block to push the rotating bracket, so that the rotating bracket drives the clamping rod to rotate from the clamping position to the release position.

[0015] In one embodiment, the winding needle assembly also includes a first push rod, a first slider and a first roller. The first push rod is movably connected to the first fixed needle along the axial direction of the winding needle assembly, the first slider is movably connected to the first fixed needle along the radial direction of the winding needle assembly, the first outer needle is connected to the first slider, and a first strip groove is provided on the first slider. The longitudinal extension direction of the first strip groove is inclined to the axial and radial directions of the winding needle assembly. The first roller is rotatably connected to the first push rod and rolls with the first strip groove.

[0016] In one embodiment, the winding needle assembly further includes a fourth elastic member, which abuts between the winding needle seat and one end of the first push rod toward the winding needle seat, and is used to provide an elastic force that causes the first push rod to have a movement tendency away from the winding needle seat.

[0017] In one embodiment, a second strip groove is provided on the first fixed needle, and the second strip groove extends longitudinally along the axial direction of the winding needle assembly; the winding needle assembly also includes a second roller rotatably connected to the first push rod, and the second roller is in rolling engagement with the second strip groove.

[0018] In one embodiment, the winding needle assembly also includes a second push rod, a second slider and a third roller. The second push rod is movably connected to the second fixed needle along the axial direction of the winding needle assembly. The second slider is movably connected to the second fixed needle along the radial direction of the winding needle assembly. The second outer needle is connected to the second slider. A third strip groove is provided on the second slider. The longitudinal extension direction of the third strip groove is inclined to the axial and radial directions of the winding needle assembly. The third roller is rotatably connected to the second push rod and rollingly cooperates with the third strip groove.

[0019] In one embodiment, the winding needle assembly further includes a fifth elastic member, which abuts against the winding needle seat and one end of the second push rod toward the winding needle seat, and is used to provide an elastic force that causes the second push rod to have a movement tendency away from the winding needle seat.

[0020] In one embodiment, a fourth strip groove is provided on the second fixed needle, and the fourth strip groove extends longitudinally along the axial direction of the winding needle assembly; the winding needle assembly also includes a fourth roller rotatably connected to the second push rod, and the fourth roller is in rolling engagement with the fourth strip groove.

[0021] In one embodiment, the clamping rod can be rotated from the release position to the clamping position under the pushing action of the push plate, and the surface of the clamping rod for contacting the push plate is an arc surface.

[0022] A winding device comprises the winding needle mechanism as described in any of the above embodiments.

[0023] In the aforementioned winding needle mechanism and winding device, when the clamping rod is in the released position, the airflow from the air outlet first blows the upstream cut end of the web into the gap between the clamping rod and the clamping surface within the clamping slot of the winding needle assembly. Then, under the action of an external force, the clamping rod rotates toward the clamping surface, causing it to pass through a certain intermediate equilibrium position. At this point, the elastic force provided by the third elastic member drives the rotating bracket to continue rotating the clamping rod toward the clamping surface until the clamping rod presses and secures the upstream cut end of the web against the clamping surface (i.e., the clamping rod reaches the clamping position).

[0024] When the material strip does not stop being conveyed downstream, the upstream cut end formed after the material strip is cut enters the gap of the winding needle assembly, and the upstream cut end of the material strip entering the gap is clamped and fixed on the clamping surface by using the clamping rod. During this process, the winding needle assembly keeps rotating, which on the one hand greatly improves the production efficiency, and on the other hand eliminates the needle threading and film splicing actions, greatly simplifying the structure of the winding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figures 1 to 5 This is a structural diagram of the operation process of the winding device in one embodiment of the present invention;

[0026] Figure 6 for Figure 4 The shown partial enlarged view of the winding device at the first station;

[0027] Figure 7 for Figure 1 The structural diagram of the rolling cutting trigger mechanism of the winding device shown;

[0028] Figure 8 for Figure 7 A schematic structural diagram of a rolling trigger assembly of the rolling trigger mechanism shown;

[0029] Figure 9 for Figure 8 A front view of the roll cut trigger assembly is shown;

[0030] Figure 10 for Figure 9 The structure diagram of the rolling cut trigger assembly shown is cut along the AA direction;

[0031] Figure 11 for Figure 9 A schematic structural diagram of the push plate of the rolling cut trigger assembly shown;

[0032] Figure 12 for Figure 9 A schematic structural diagram of the guide rod and cutter of the rolling cut trigger assembly shown;

[0033] Figure 13 for Figure 1 A schematic structural diagram of a winding needle mechanism of a winding device is shown;

[0034] Figure 14 for Figure 13 The structure diagram of the needle winding mechanism shown in another perspective (the first outer needle is omitted);

[0035] Figure 15 for Figure 14 The structure diagram of the needle winding mechanism shown in another perspective (the first outer needle is omitted);

[0036] Figure 16for Figure 13 A cross-sectional view of the needle winding mechanism shown (the first outer needle is omitted);

[0037] Figure 17 for Figure 13 The assembly drawing of the clamping rod, fixed bracket and rotating bracket of the needle winding mechanism shown;

[0038] Figure 18 for Figure 13 The cross-sectional structural diagram of the needle winding mechanism is shown. DETAILED DESCRIPTION

[0039] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0042] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0043] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate 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 implementation methods.

[0045] See also Figures 1 to 5 One embodiment of the present invention provides a winding device, including a winding needle mechanism 10 and a rolling cutting trigger mechanism 20. The winding needle mechanism 10 includes a winding needle assembly 11 located at the first station a1 and a clamping rod 12 provided on the winding needle assembly 11. The winding needle assembly 11 has a gap 110 for the feed tape A to enter and a clamping surface B (see FIG. 1 ) as a side wall of the gap 110. Figure 6). The winding needle assembly 11 can be rotated in a controlled manner to wind the material strip A. The clamping rod 12 is located in the gap 110 of the winding needle assembly 11, and can be operated to switch between the clamping position and the release position. When the clamping rod 12 is in the clamping position, the clamping rod 12 abuts against the above-mentioned clamping surface B, thereby clamping the material strip A entering the gap 110 between the clamping rod 12 and the clamping surface B, so that the winding needle assembly 11 can drive the material strip A to be wound on the winding needle assembly 11 when it rotates. When the clamping rod 12 is in the release position, the clamping rod 12 is separated from the above-mentioned clamping surface B, so that there is a certain gap between the clamping rod 12 and the clamping surface B, that is, the material strip A between the clamping rod 12 and the clamping surface B is released or the material strip A is facilitated to enter the gap between the clamping rod 12 and the clamping surface B.

[0046] See Figures 6 to 10 The rolling trigger mechanism 20 includes a roller assembly 24 and a rolling trigger assembly 23. The roller assembly 24 is used to press the material strip A against the winding needle assembly 11 located at the first station a1. The rolling trigger assembly 23 includes a rotating shaft 232, a cutter 233, and a push plate 234. The cutter 233 and push plate 234 are both mounted on the rotating shaft 232, and the push plate 234 has an air outlet 236. The rotating shaft 232 is rotatable about its own axis to drive the cutter 233 and push plate 234 to rotate relative to the gap 110 of the winding needle assembly 11 located at the first station a1. Among them, when the rotating shaft 232 drives the cutter 233 and the push plate 234 to rotate to the opposite side of the gap 110 of the winding needle assembly 11 located at the first work station a1, the cutter 233 cuts off the material strip A passing through, and the blowing port 236 blows the upstream cut end A1 of the material strip A into the gap between the clamping rod 12 and the clamping surface B. The push plate 234 can be moved to the gap 110 relative to the rotating shaft 232 in a controlled manner, and push the clamping rod 12 from the release position to the clamping position, so that the clamping rod 12 presses the upstream cut end A1 of the material strip A tightly and fixes it on the clamping surface B.

[0047] Please see again Figures 1 to 5 As shown, in actual use of the above winding equipment, the material strip A is fed downward at a certain speed and passes through the first station a1. The winding needle assembly 11 reaches the first station a1 and rotates around its own axis. At this time, the clamping rod 12 located in the gap 110 of the winding needle assembly 11 at the first station a1 is in the loose position. At the same time, the roller assembly 24 presses the material strip A against the winding needle assembly 11 at the first station a1, and the rotating shaft 232 drives the cutter 233 and the push plate 234 to rotate (see Figures 1 to 2). When the cutter 233 and the push plate 234 follow the rotating shaft 232 to rotate to the gap 110 on the winding needle assembly 11 located at the first station a1, the cutter 233 contacts the passing material strip A and cuts it, and the air blowing port 236 on the push plate 234 blows air toward the upstream cut end A1 formed after the material strip A is cut, until the upstream cut end A1 of the material strip A is blown into the gap between the clamping rod 12 and the clamping surface B. At this time, the push plate 234 is controlled to move a certain distance relative to the rotating shaft 232 toward the gap 110 of the winding needle assembly 11 located at the first station a1, so that the push plate 234 pushes the clamping rod 12 in the gap 110 of the winding needle assembly 11 located at the first station a1, so that the clamping rod 12 moves toward the clamping surface B under the pushing action of the push plate 234 until the clamping rod 12 clamps the upstream cut end A1 of the material strip A on the clamping surface B (see Figures 3 to 5 Then, the push plate 234 is controlled to exit the nip 110 of the winding needle assembly 11 at the first station a1, and the winding needle assembly 11 at the first station a1 continues to rotate, thereby winding the material strip A onto the winding needle assembly 11 to form the winding core A2. In other words, while the cutter 233 cuts the passing material strip A, the push plate 234 enters the nip 110 and pushes the clamping rod 12, and the push plate 234 exits the nip 110, the rotating shaft 232 continues to rotate, driving the cutter 233 and push plate 234 to rotate. At the same time, the winding needle assembly 11 also continues to rotate, and the material strip A continues to be conveyed downstream.

[0048] In this way, when the material strip A does not stop being conveyed downstream, the material strip A is cut (i.e., rolling cutting) in the process of being driven by the rotating shaft 232 to rotate the cutter 233, and the air flow blown out of the blowing port 236 is used to blow the upstream cut end A1 of the material strip A into the gap 110 of the winding needle assembly 11, and the push plate 234 is used to trigger the clamping rod 12 so that the clamping rod 12 clamps the upstream cut end A1 of the material strip A on the clamping surface B. During this process, the winding needle assembly 11 keeps rotating and the material strip A also keeps being conveyed downstream. On the one hand, the production efficiency is greatly improved, and on the other hand, the needle threading and film splicing actions are eliminated, which greatly simplifies the structure of the winding equipment.

[0049] It should be noted that the push plate 234 is not limited to triggering the clamping rod 12. In other embodiments, a driving member can be provided on the winding needle assembly 11 to provide the power to drive the clamping rod 12 from the release position to the clamping position. In this case, the push plate 234 only functions to blow the upstream cut end A1 of the material strip A between the clamping rod 12 and the clamping surface B through the air blowing port 236 thereon.

[0050] It should also be noted that the push plate 234 is not limited to being installed on the rotating shaft 232. In other embodiments, the push plate 234 can also be set on other moving parts. As long as it can drive the push plate 234 to move closer to or away from the winding needle assembly 11 located at the first workstation a1, and push the clamping rod 12 from the release position to the clamping position, no limitation is made here.

[0051] For ease of understanding, the following description uses as an example an implementation in which the push plate 234 is installed on the rotating shaft 232, and the push plate 234 pushes and triggers the clamping rod 12 in the process of following the rotation of the rotating shaft 232, so that the clamping rod 12 switches from the release position to the clamping position.

[0052] Please continue to see Figures 6 to 10 It is understood that after the cutter 233 cuts the passing material strip A, the upstream cut end A1 located upstream and the downstream cut end located downstream are formed at the fracture of the material strip A. The downstream cut end separates from the upstream cut end A1 as the downstream material strip A is transported downstream. Under the pressure of the roller assembly 24 on the material strip A, the upstream cut end A1 remains located in the gap 110 of the winding needle assembly 11, and is then blown by the airflow from the blowing port 236 into the gap 110 of the winding needle assembly 11 located at the first workstation a1, where it is clamped and fixed on the clamping surface B by the clamping rod 12, thereby enabling the winding needle assembly 11 located at the first workstation a1 to wind the material strip A.

[0053] In an embodiment of the present invention, the rolling trigger assembly 23 further includes a mounting seat 231 and a cam 235. The rotating shaft 232 is rotatably connected to the mounting seat 231, that is, the rotating shaft 232 can rotate about its own axis relative to the mounting seat 231. The cutter 233 is fixedly connected to the rotating shaft 232, and the push plate 234 is movably connected to the rotating shaft 232, that is, the cutter 233 and the push plate 234 can rotate along with the rotating shaft 232. In addition, the push plate 234 can also move relative to the rotating shaft 232 while rotating along with the rotating shaft 232, thereby entering or exiting the gap 110 of the needle winding assembly 11 located at the first workstation a1. The cam 235 is mounted on the rotating shaft 232 and fixedly connected to the mounting seat 231, so that when the rotating shaft 232 rotates, the cam 235 does not rotate along with the rotating shaft 232. The cam 235 is in transmission connection with the push plate 234, so that as the push plate 234 rotates with the rotating shaft 232, it is driven toward or away from the winding needle assembly 11 located at the first station a1 relative to the rotating shaft 232. In this way, the rotating shaft 232 drives the push plate 234 to rotate together, causing the push plate 234 to rotate relative to the cam 235. As a result, the cam 235 drives the push plate 234 relative to the rotating shaft 232 and into or out of the clamping gap 110 of the winding needle assembly 11 located at the first station a1. This causes the push plate 234 to push against the clamping rod 12, triggering the clamping rod 12. The triggered clamping rod 12 clamps the upstream cut end A1 of the material strip A to the clamping surface B.

[0054] It should be noted that the cam 235 is used to drive the push plate 234 to make a rotational motion following the rotating shaft 232 while also making a linear motion relative to the rotating shaft 232, thereby enabling the push plate 234 to trigger the clamping rod 12 in the gap 110 of the winding needle assembly 11. There is no need to configure an additional drive component to drive the push plate 234 to move relative to the rotating shaft 232, which greatly simplifies the structure of the rolling trigger assembly 23, reduces the space required for the rolling trigger assembly 23, and reduces the difficulty of spatial layout of the various components of the rolling trigger assembly 23.

[0055] Optionally, the cam 235 has a track groove 2351, and the push plate 234 is provided with a follower roller 238 (see FIG. Figure 9), the follower roller 238 rolls in the track groove 2351 of the cam 235. As the rotating shaft 232 drives the push plate 234 to rotate, the push plate 234 drives the follower roller 238 thereon to roll along the track groove 2351. Guided by the track groove 2351, the follower roller 238 drives the push plate 234 toward or away from the winding needle assembly 11 located at the first station a1 relative to the rotating shaft 232, causing the push plate 234 to first enter and then exit the gap 110 of the winding needle assembly 11 located at the first station a1, thereby causing the push plate 234 to push and trigger the clamping rod 12 in the gap 110 of the winding needle assembly 11, ensuring that the clamping rod 12 clamps and fixes the upstream cut end A1 of the material strip A to the clamping surface B.

[0056] Furthermore, two cams 235 are provided. Follower rollers 238 are mounted on both ends of the push plate 234 in a direction parallel to the axial direction of the rotating shaft 232. The two follower rollers 238 respectively engage with the track grooves 2351 on the two cams 235, thereby using the two cams 235 to guide the follower rollers 238 at both ends of the push plate 234. Consequently, the follower rollers 238 at both ends of the push plate 234 simultaneously drive the push plate 234 to move relative to the rotating shaft 232, making the movement of the push plate 234 relative to the rotating shaft 232 more stable and reliable, ensuring more accurate and reliable triggering of the clamping rod 12.

[0057] It should be noted that the cam structure is not limited to the cam 235 with the track groove 2351 and the follower roller 238. Other cam structures can also be used. As long as the push plate 234 can follow the rotating shaft 232 to rotate relative to the gap 110 of the winding needle assembly 11 located at the first workstation a1, the push plate 234 can be driven to enter or exit the gap 110, thereby realizing the push triggering of the clamping rod 12. No limitation is made here.

[0058] Specifically, in this embodiment, the rolling trigger assembly 23 also includes a rotary drive member 237 and a transmission assembly (not shown). The rotary drive member 237 is mounted on the mounting base 231. The transmission assembly is connected between the output shaft of the rotary drive member 237 and the rotating shaft 232 to transmit the rotational motion of the output shaft of the rotary drive member 237 to the rotating shaft 232, thereby enabling the rotary drive member 237 to drive the rotating shaft 232 to rotate. Alternatively, the rotary drive member 237 can be a motor.

[0059] Optionally, the transmission assembly includes a driving wheel 2371, a driven wheel 2372, and a transmission belt 2373. The driving wheel 2371 is mounted on the output shaft of the rotary drive member 237, so that the rotary drive member 237 can drive the driving wheel 2371 to rotate. The driven wheel 2372 is mounted on the rotating shaft 232, so that the rotating shaft 232 can rotate synchronously with the driven wheel 2372. The transmission belt 2373 is sleeved between the driving wheel 2371 and the driven wheel 2372, so that when the driving wheel 2371 rotates, the driven wheel 2372 can be driven to rotate via the transmission belt 2373. In this way, when it is necessary to drive the rotating shaft 232 to rotate, the rotary drive member 237 drives the driving wheel 2371 to rotate, and the driving wheel 2371 drives the driven wheel 2372 to rotate via the transmission belt 2373, and the driven wheel 2372 then drives the rotating shaft 232 to rotate. It should be noted that the transmission assembly is not limited to a belt transmission structure, and in other embodiments, a gear transmission structure may also be used, which is not limited here.

[0060] It should also be noted that the movement of the push plate 234 relative to the rotating shaft 232 is not limited to the cam drive structure formed by the cam 235 and the follower roller 238. In other embodiments, an additional drive member may be provided to provide power for the movement of the push plate 234 relative to the rotating shaft 232. Specifically, the rolling trigger assembly 23 also includes a trigger drive member mounted on the rotating shaft 232, and the push plate 234 is movably connected to the rotating shaft 232. The driving end of the trigger drive member is connected to the push plate 234, so that the trigger drive member can drive the push plate 234 relative to the rotating shaft 232 toward or away from the winding needle assembly 11 located at the first workstation a1. Optionally, the trigger drive member can be a pneumatic cylinder.

[0061] See Figures 9 to 12 Optionally, the rolling-cut trigger assembly 23 also includes a guide rod 239. One end of the guide rod 239 is fixedly connected to the rotating shaft 232, and the other end of the guide rod 239 is fixedly connected to the cutter 233. In other words, the cutter 233 is fixedly connected to the rotating shaft 232 via the guide rod 239. A guide hole 2343 is defined in the push plate 234. The guide rod 239 extends through the guide hole 2343 on the push plate 234, allowing the push plate 234 to move along the guide rod 239. In this way, the guide rod 239 is used to assemble the cutter 233 and the push plate 234 with the rotating shaft 232, ensuring that the cutter 233 and the rotating shaft 232 are relatively fixed, while the push plate 234 can move a certain distance relative to the rotating shaft 232. The guide rod 239 also guides the movement of the push plate 234 relative to the rotating shaft 232, making the triggering action of the push plate 234 on the clamping rod 12 more stable and reliable.

[0062] Optionally, two or more guide rods 239 may be provided, each of which is spaced apart axially along the rotating shaft 232. The push plate 234 is provided with a plurality of guide holes 2343 corresponding to each of the guide rods 239, with each guide rod 239 passing through a corresponding guide hole 2343. The cutter 233 is fixedly connected to the end of each guide rod 239 facing away from the rotating shaft 232. Thus, utilizing two or more guide rods 239 to guide the push plate 234 further ensures a more stable and reliable triggering action of the push plate 234 on the clamping rod 12.

[0063] In the embodiment of the present application, the push plate 234 has a wedge-shaped block 2341 at one end thereof, located near the winding needle assembly 11 at the first station a1. This wedge-shaped block 2341 has an inclined surface 2342 that is inclined relative to the direction of movement of the push plate 234 relative to the rotating shaft 232. In other words, this inclined surface 2342 is inclined relative to the axial direction of the guide rod 239. As the push plate 234 moves relative to the rotating shaft 232 toward the gap 110 of the winding needle assembly 11 at the first station a1, the push plate 234 pushes against the clamping rod 12 via this inclined surface 2342, converting the movement of the push plate 234 into movement of the clamping rod 12 toward the clamping surface B. This allows the clamping rod 12 to clamp and secure the upstream cut end A1 of the web A to the clamping surface B.

[0064] Furthermore, there are two wedge blocks 2341, located at either end of the push plate 234, parallel to the axis of the rotating shaft 232. The cutter 233 is positioned between the two wedge blocks 2341. This allows the web A to pass through the space between the two wedge blocks 2341, allowing the cutter 233 to cut the web A as it passes through as the rotating shaft 232 rotates. This prevents the wedge blocks 2341 from contacting the web A, which could prevent the cutter 233 from rolling and cutting the web A. Furthermore, the two wedge blocks 2341 simultaneously push and trigger the clamping rod 12 within the slit 110, ensuring that the clamping rod 12 is accurately triggered and securely clamps the upstream cut end A1 of the web A to the clamping surface B.

[0065] Specifically in the embodiment, the winding needle assembly 11 further has a wall surface C serving as the other side wall of the gap 110, and the wall surface C is arranged opposite to the clamping surface B. When the clamping rod 12 is in the loose position, a gap is formed between the clamping rod 12 and the wall surface C, which is used to allow the wedge block 2341 to enter. In this way, after the upstream cut end A1 of the material strip A is blown between the clamping rod 12 and the clamping surface B, the push plate 234 moves closer to the winding needle assembly 11 located at the first workstation a1 until the wedge block 2341 on the push plate 234 is inserted into the gap between the clamping rod 12 and the wall surface C, so that the wedge block 2341 pushes the clamping rod 12 through its own inclined surface 2342, causing the clamping rod 12 to move toward the clamping surface B until the upstream cut end A1 of the material strip A is clamped on the clamping surface B. Thus, the setting of the gap enables the wedge block 2341 on the push plate 234 to accurately push the clamping rod 12, ensuring that the clamping rod 12 is accurately and timely switched from the release position to the clamping position.

[0066] Specifically, in the embodiment, the clamping rod 12 can be rotated from the release position to the clamping position under the pushing action of the wedge block 2341 on the push plate 234. During the pushing action, the inclined surface 2342 on the wedge block 2341 contacts the clamping rod 12. The surface of the clamping rod 12 that contacts the inclined surface 2342 on the wedge block 2341 of the push plate 234 is a curved surface, thereby converting the surface contact between the wedge block 2341 and the clamping rod 12 into line contact, greatly reducing the friction between the wedge block 2341 and the clamping rod 12, making the pushing action of the wedge block 2341 against the clamping rod 12 smoother, thereby preventing the wedge block 2341 from getting stuck in the gap between the clamping rod 12 and the wall C.

[0067] Please continue to see Figure 6 and Figure 7 As shown, in the embodiment of the present application, the rolling assembly 24 includes a first rolling assembly 21 and a second rolling assembly 22. The first rolling assembly 21 includes a first pressing roller 211 that is rotatable about its own axis. The first rolling assembly 21 can controllably drive the first pressing roller 211 to press the portion of the material strip A located upstream of the cutter 233 against the winding needle assembly 11 located at the first station a1. The second rolling assembly 22 includes a second pressing roller 221 that is rotatable about its own axis. The second rolling assembly 22 can controllably drive the second pressing roller 221 to press the portion of the material strip A located downstream of the cutter 233 against the winding needle assembly 11 located at the first station a1. In this way, before the cutter 233 rolls the material strip A, the material strip A passing both upstream and downstream of the cutter 233 is pressed against the winding needle assembly 11 located at the first station a1, thereby ensuring that the cutter 233 can accurately cut the passing material strip A, thereby improving the rolling quality.

[0068] It can be understood that since the first pressing roller 211 of the first rolling assembly 21 and the second pressing roller 221 of the second rolling assembly 22 are both rotatable around their own axes, when the first pressing roller 211 and the second pressing roller 221 respectively press the passing material strip A onto the winding needle assembly 11 located at the first workstation a1, under the traction action of the downstream, the material strip A can pass between the first pressing roller 211 and the winding needle assembly 11 located at the first workstation a1 and between the second pressing roller 221 and the winding needle assembly 11 located at the first workstation a1 and be transported downstream. That is to say, in the process of the rotating shaft 232 driving the cutter 233 to perform rolling cutting, the cutter 233 rotates along with the rotating shaft 232, the winding needle assembly 11 located at the first work station a1 also rotates, and the material strip A between the cutter 233 and the winding needle assembly 11 is also conveyed downstream, and the rotation speed of the rotating shaft 232, the rotation speed of the winding needle assembly 11 and the downstream conveying speed of the material strip A are matched to ensure that the speeds of the three are consistent at the moment the cutter 233 cuts off the material strip A, so that the cutter 233 can accurately and quickly cut the material strip A, and the airflow blown out of the blowing port 236 can also accurately blow the upstream cut end A1 of the material strip A into the gap 110 of the winding needle assembly 11 located at the first work station a1.

[0069] Specifically, in the embodiment, the rolling-cut trigger mechanism 20 further includes a driving assembly, wherein a mounting seat 231 is mounted on the driving end of the driving assembly so that the driving assembly can drive the mounting seat 231 toward or away from the winding needle assembly 11 located at the first station a1, thereby driving the rotating shaft 232 and the cutter 233 and push plate 234 on the rotating shaft 232 toward or away from the winding needle assembly 11 located at the first station a1. In this way, when the driving assembly drives the mounting seat 231 to move toward the winding needle assembly 11 located at the first station a1, the mounting seat 231 can drive the rotating shaft 232 to a rolling-cutting position closer to the winding needle assembly 11 located at the first station a1, so that the cutter 233 on the rotating shaft 232 can roll-cut the material strip A passing through, and the blowing port 236 on the push plate 234 can blow the upstream cut end A1 of the material strip A into the gap 110 of the winding needle assembly 11, and the push plate 234 can push and trigger the clamping rod 12.

[0070] When the driving assembly drives the mounting seat 231 to move away from the winding needle assembly 11 located at the first work station a1, the mounting seat 231 can drive the rotating shaft 232 to leave the above-mentioned rolling cutting position, so that there is a certain distance between the cutter 233 and the push plate 234 on the rotating shaft 232 and the winding needle assembly 11 located at the first work station a1, ensuring that the cutter 233 and the push plate 234 on the rotating shaft 232 will not interfere with the winding action of the winding needle assembly 11 located at the first work station a1.

[0071] It should be noted that the drive assembly can be a linear drive component, such as a linear module, as long as it can drive the mounting seat 231 toward or away from the winding needle assembly 11 located at the first station a1. Furthermore, a guide assembly, such as a slide rail, can be used to guide the movement of the mounting seat 231. The specific structures of the drive assembly and guide assembly are not limited here; they only need to be able to accurately drive the mounting seat 231 toward or away from the winding needle assembly 11 located at the first station a1.

[0072] It should also be noted that in some embodiments, the first rolling assembly 21 is mounted on the mounting seat 231, so that when the drive assembly drives the mounting seat 231 toward or away from the winding needle assembly 11 located at the first station a1, the mounting seat 231 can drive the rolling trigger assembly 23 and the first rolling assembly 21 to move toward or away from the winding needle assembly 11 located at the first station a1. In other words, the first rolling assembly 21 and the rolling trigger assembly 23 share the same drive assembly, eliminating the need for a separate drive assembly for the first rolling assembly 21. This greatly simplifies the device structure, reduces the required space, and reduces the difficulty of spatially arranging the various components of the rolling trigger mechanism 20.

[0073] Specifically, in this embodiment, the first rolling assembly 21 includes a first mounting frame 212 and a first elastic member 213. The first mounting frame 212 is movably connected to the mounting seat 231 via a first guide rod 214, and the first pressure roller 211 is rotatably connected to the first mounting frame 212. The first elastic member 213 abuts between the mounting seat 231 and the first mounting frame 212, providing an elastic force that forces the first mounting frame 212 to move relative to the mounting seat 231 toward the winding needle assembly 11 located at the first station a1. As the drive assembly drives the mounting seat 231 toward the winding needle assembly 11 located at the first station a1, the first pressure roller 211 first presses the passing material strip A against the winding needle assembly 11 located at the first station a1. As the mounting seat 231 continues to approach the winding needle assembly 11, the rotating shaft 232 then moves with the mounting seat 231 to the aforementioned rolling cutting position (during which the first elastic member 213 is further compressed). Alternatively, the first elastic member 213 may be a compression spring.

[0074] During actual use, when the driving assembly drives the mounting seat 231 to approach the winding needle assembly 11 located at the first station a1, the first rolling assembly 21 and the rotating shaft 232 approach the winding needle assembly 11 located at the first station a1 together, and the first pressing roller 211 of the first rolling assembly 21 first presses the passing material strip A onto the winding needle assembly 11 located at the first station a1, and then the rotating shaft 232 reaches the above-mentioned rolling cutting position. When the rotating shaft 232 is in the rolling cutting position, the rotating shaft 232 drives the cutter 233 and the push plate 234 to rotate opposite the slit 110 of the winding needle assembly 11 located at the first station a1, so that the cutter 233 cuts the material strip A passing through the slit 110 of the winding needle assembly 11. The air outlet 236 on the push plate 234 blows the upstream cut end A1 of the material strip A into the space between the clamping rod 12 and the clamping surface B within the slit 110. The wedge block 2341 on the push plate 234 enters the slit 110 and pushes the clamping rod 12 toward the clamping surface B, causing the clamping rod 12 to be triggered and clamp the upstream cut end A1 of the material strip A to be fixed on the clamping surface B. After the upstream cut end A1 of the material strip A is clamped and fixed on the clamping surface B by the clamping rod 12, the drive assembly drives the mounting base 231 away from the winding needle assembly 11 located at the first station a1. When the driving assembly drives the mounting seat 231 away from the winding needle assembly 11 located at the first station a1, the rotating shaft 232 first leaves the above-mentioned rolling cutting position driven by the mounting seat 231 (the compression amount of the first elastic member 213 gradually decreases during this process), so that the cutter 233 and the push plate 234 are away from the winding needle assembly 11 located at the first station a1, and then the first pressure roller 211 of the first rolling assembly 21 is separated from the winding needle assembly 11 located at the first station a1, that is, the first pressure roller 211 releases the pressure on the passing material strip A.

[0075] Of course, in other embodiments, the first rolling assembly 21 may not be arranged on the mounting seat 231, and a driving component may be provided to independently drive the first rolling assembly 21 to move closer to or away from the winding needle assembly 11 located at the first workstation a1, which is not limited here.

[0076] It should also be noted that in some embodiments, the second rolling assembly 22 is also mounted on the mounting seat 231, so that when the drive assembly drives the mounting seat 231 toward or away from the winding needle assembly 11 located at the first station a1, the mounting seat 231 can drive the rolling trigger assembly 23 and the second rolling assembly 22 toward or away from the winding needle assembly 11 located at the first station a1. In other words, the second rolling assembly 22 and the rolling trigger assembly 23 share the same drive assembly, eliminating the need for a separate drive assembly for the second rolling assembly 22. This greatly simplifies the device structure, reduces the required space, and reduces the difficulty of spatially arranging the various components of the rolling trigger mechanism 20.

[0077] Specifically, in this embodiment, the second rolling assembly 22 includes a second mounting bracket 222 and a second elastic member 223. The second mounting bracket 222 is movably connected to the mounting seat 231 via a second guide rod 224, and the second pressure roller 221 is rotatably connected to the second mounting bracket 222. The second elastic member 223 abuts between the mounting seat 231 and the second mounting bracket 222, providing an elastic force that forces the second mounting bracket 222 to move relative to the mounting bracket 231 toward the winding needle assembly 11 located at the first station a1. As the drive assembly drives the mounting bracket 231 toward the winding needle assembly 11 located at the first station a1, the second pressure roller 221 first presses the passing material strip A against the winding needle assembly 11 located at the first station a1. As the mounting bracket 231 continues to approach the winding needle assembly 11, the rotating shaft 232 then moves with the mounting bracket 231 to the aforementioned rolling cutting position (during which the second elastic member 223 is further compressed). Optionally, the second elastic member 223 may be a compression spring.

[0078] During actual use, when the driving assembly drives the mounting seat 231 to approach the winding needle assembly 11 located at the first station a1, the second rolling assembly 22 and the rotating shaft 232 approach the winding needle assembly 11 located at the first station a1 together, and the second pressing roller 221 of the second rolling assembly 22 first presses the passing material strip A onto the winding needle assembly 11 located at the first station a1, and then the rotating shaft 232 reaches the above-mentioned rolling cutting position. When the rotating shaft 232 is in the rolling cutting position, the rotating shaft 232 drives the cutter 233 and the push plate 234 to rotate opposite the slit 110 of the winding needle assembly 11 located at the first station a1, so that the cutter 233 cuts the material strip A passing through the slit 110 of the winding needle assembly 11. The air outlet 236 on the push plate 234 blows the upstream cut end A1 of the material strip A into the space between the clamping rod 12 and the clamping surface B within the slit 110. The wedge block 2341 on the push plate 234 enters the slit 110 and pushes the clamping rod 12 toward the clamping surface B, causing the clamping rod 12 to be triggered and clamp the upstream cut end A1 of the material strip A to be fixed on the clamping surface B. After the upstream cut end A1 of the material strip A is clamped and fixed on the clamping surface B by the clamping rod 12, the drive assembly drives the mounting base 231 away from the winding needle assembly 11 located at the first station a1. When the driving assembly drives the mounting seat 231 away from the winding needle assembly 11 located at the first station a1, driven by the mounting seat 231, the rotating shaft 232 first leaves the above-mentioned rolling cutting position (the compression amount of the second elastic member 223 gradually decreases during this process), so that the cutter 233 and the push plate 234 are away from the winding needle assembly 11 located at the first station a1, and then the second pressure roller 221 of the second rolling assembly 22 is separated from the winding needle assembly 11 located at the first station a1, that is, the second pressure roller 221 releases the pressure on the passing material strip A.

[0079] Of course, in other embodiments, the second rolling assembly 22 may not be arranged on the mounting seat 231, and a driving component may be provided to independently drive the second rolling assembly 22 to approach or move away from the winding needle assembly 11 located at the first workstation a1, which is not limited here.

[0080] See Figures 13 to 17 In an embodiment of the present application, the needle winding mechanism 10 further includes a fixed bracket 13, a rotating bracket 14 and a third elastic member 15. The fixed bracket 13 is mounted on the needle winding assembly 11, and the rotating bracket 14 is rotatably connected to the fixed bracket 13. The clamping rod 12 is mounted on the rotating bracket 14 to rotate between the above-mentioned clamping position and the release position following the rotating bracket 14. One end of the third elastic member 15 is connected to the fixed bracket 13, and the other end of the third elastic member 15 is connected to the rotating bracket 14. The third elastic member 15 is used to provide an elastic force that drives the rotating bracket 14 to drive the clamping rod 12 to rotate to the clamping position or the release position. Thus, when the clamping rod 12 is in the released position, the airflow from the air outlet 236 first blows the upstream cut end A1 of the material strip A into the gap between the clamping rod 12 and the clamping surface B. Then, the two wedge blocks 2341 on the push plate 234 are inserted into the gap between the clamping rod 12 and the wall surface C, thereby using the inclined surface 2342 to push the clamping rod 12, causing the rotating bracket 14 to drive the clamping rod 12 to rotate toward the clamping surface B. When the rotating bracket 14 drives the clamping rod 12 to pass a certain intermediate equilibrium position, the elastic force provided by the third elastic member 15 drives the rotating bracket 14 to drive the clamping rod 12 to rotate toward the clamping surface B until the clamping rod 12 presses and fixes the upstream cut end A1 of the material strip A on the clamping surface B (i.e., the clamping rod 12 reaches the clamping position). Optionally, the third elastic member 15 can be a tension spring.

[0081] It should be noted that, as the rotating bracket 14 drives the clamping rod 12 to rotate from the release position to the clamping position, the angle of the third elastic member 15 relative to the rotating bracket 14 also changes, causing the angle of the elastic force provided to the rotating bracket 14 by the third elastic member 15 due to compression to also change. When the clamping rod 12 is at any position between the release position and the intermediate equilibrium position, the elastic force provided by the third elastic member 15 to the rotating bracket 14 can drive the rotating bracket 14 to drive the clamping rod 12 to rotate toward the release position (i.e., rotate away from the clamping surface B). When the clamping rod 12 is at any position between the intermediate equilibrium position and the clamping position, the elastic force provided by the third elastic member 15 to the rotating bracket 14 can drive the rotating bracket 14 to drive the clamping rod 12 to rotate toward the clamping position (i.e., rotate toward the clamping surface B). In this way, when using the wedge block 2341 on the push plate 234 to push the clamping rod 12, it is necessary to ensure that the clamping rod 12 is pushed from the loose position to any position between the intermediate equilibrium position and the clamping position (that is, it is necessary to ensure that the clamping rod 12 is pushed to exceed the intermediate equilibrium position), so that the clamping rod 12 can automatically be pressed against the clamping surface B under the action of the elastic force provided by the third elastic member 15, that is, the upstream cut end A1 of the material strip A is pressed and fixed on the clamping surface B.

[0082] Specifically in the embodiment, the fixing bracket 13 has a limiting portion 131 (see Figure 17 ), when the rotating bracket 14 drives the clamping rod 12 to rotate to the loose position, the limiting portion 131 cooperates with the stop of the rotating bracket 14 to prevent the rotating bracket 14 from continuing to drive the clamping rod 12 to rotate in the direction away from the clamping surface B, that is, the limiting portion 131 is used to limit the clamping rod 12 in the loose position, ensuring that there is a gap of a certain width between the clamping rod 12 and the wall surface C when in the loose position, thereby ensuring that the wedge block 2341 on the push plate 234 can be accurately inserted into the gap and trigger the clamping rod 12 to push.

[0083] Specifically, in the embodiment, the needle winding assembly 11 includes a needle winding seat 117, a first fixed needle 113, a second fixed needle 114, a first outer needle 111, and a second outer needle 112. The needle winding seat 117 is controllably rotatable, and one end of the first fixed needle 113 and the second fixed needle 114 are both mounted on the needle winding seat 117 and arranged relative to each other. The first outer needle 111 is mounted on the first fixed needle 113, and the second outer needle 112 is mounted on the second fixed needle 114, with the aforementioned gap 110 formed between the first outer needle 111 and the second outer needle 112. The side surface of the first outer needle 111 facing the second outer needle 112 includes the aforementioned clamping surface B, and the fixing bracket 13 is mounted on the first fixed needle 113 and / or the second fixed needle 114. In this way, the outer surfaces of the first outer needle 111 and the second outer needle 112 facing away from each other form the outer peripheral surface of the winding needle assembly 11. When the winding needle seat 117 rotates, it can drive the first outer needle 111 and the second outer needle 112 to rotate, thereby winding the material strip A onto the outer peripheral surface formed by the outer surfaces of the first outer needle 111 and the second outer needle 112 facing away from each other.

[0084] Furthermore, the first outer needle 111 and the second outer needle 112 can be controlled to move closer to or farther from each other relative to the first fixed needle 113 and the second fixed needle 114, respectively, so as to reduce or increase the radial dimension of the outer peripheral surface. The winding needle mechanism 10 also includes a reset block 16 mounted on the second outer needle 112. When the first outer needle 111 and the second outer needle 112 approach each other, the second outer needle 112 drives the reset block 16 to push the rotating bracket 14, so that the rotating bracket 14 drives the clamping rod 12 to rotate from the clamping position to the release position, that is, the clamping rod 12 releases the upstream cut end A1 of the material strip A, so as to facilitate the unloading of the winding core A2 wound on the first outer needle 111 and the second outer needle 112. In this way, when it is necessary to unload the core A2, the first outer needle 111 and the second outer needle 112 are controlled to move closer to each other. On the one hand, the radial size of the outer peripheral surface formed by the first outer needle 111 and the second outer needle 112 is reduced, so that the winding needle assembly 11 can be pulled out from the core A2; on the other hand, the second outer needle 112 drives the reset block 16 to push the rotating bracket 14, so that the rotating bracket 14 drives the clamping rod 12 to rotate from the clamping position to the release position, thereby releasing the clamping of the upstream cut end A1 of the material strip A, so that the winding needle assembly 11 can be pulled out from the core A2.

[0085] It should be noted that when the second outer needle 112 drives the reset block 16 to push the rotating bracket 14, it is necessary to ensure that the rotating bracket 14 is pushed until it drives the clamping rod 12 to rotate to any position between the intermediate equilibrium position and the released position. Only when the rotating bracket 14 drives the clamping rod 12 to any position between the intermediate equilibrium position and the released position, the rotating bracket 14 can automatically rotate to engage with the stopper 131 under the elastic force provided by the third elastic member 15 (i.e., the rotating bracket 14 drives the clamping rod 12 to the released position).

[0086] It should be noted that the reset block 16 is not limited to being installed on the second outer needle 112. In other embodiments, the reset block 16 can also be installed on the first outer needle 111. As long as the first outer needle 111 and the second outer needle 112 move close to each other, the reset block 16 can be driven to push the rotating bracket 14, and the rotating bracket 14 can drive the clamping rod 12 to rotate from the clamping position to the release position. No limitation is made here.

[0087] Specifically in the embodiment, the winding needle assembly 11 also includes a first push rod 115, a first slider 118 and a first roller 1191. The first push rod 115 is movably connected to the first fixed needle 113 along the axial direction u of the winding needle assembly 11. The first slider 118 is movably connected to the first fixed needle 113 along the radial direction v of the winding needle assembly 11. The first outer needle 111 is connected to the first slider 118, so that the first outer needle 111 can follow the first slider 118 to move along the radial direction V of the winding needle assembly 11 (i.e., approach or move away from the second outer needle 112). A first strip groove 1181 is provided on the first slider 118, and the longitudinal extension direction of the first strip groove 1181 is inclined with respect to both the axial direction u and the radial direction v of the winding needle assembly 11. The first roller 1191 is rotatably connected to the first push rod 115 and is in rolling engagement with the first strip groove 1181. In this way, when the first push rod 115 moves along the axial direction u of the winding needle assembly 11 under the action of an external force, the first push rod 115 drives the first roller 1191 to roll along the first strip groove 1181 on the first slider 118. Because the longitudinal extension direction of the first strip groove 1181 is inclined with respect to both the axial direction u and the radial direction v of the winding needle assembly 11, the first roller 1191 can drive the first slider 118 to move along the radial direction v of the winding needle assembly 11 when rolling along the first strip groove 1181 of the first slider 118. In turn, the first slider 118 drives the first outer needle 111 to move relative to the first fixed needle 113 along the radial direction v of the winding needle assembly 11, thereby increasing or decreasing the radial dimension of the outer circumference of the winding needle assembly 11.

[0088] Furthermore, the winding needle assembly 11 further includes a fourth elastic member 1193 (see Figure 16), the fourth elastic member 1193 abuts between the winding needle seat 117 and the end of the first push rod 115 facing the winding needle seat 117, and is used to provide an elastic force that causes the first push rod 115 to have a movement tendency away from the winding needle seat 117. In this way, when the first push rod 115 moves toward the winding needle seat 117 along the axial direction u of the winding needle assembly 11 under the action of external force, the fourth elastic member 1193 is pressed by the first push rod 115 and further compressed, and the first push rod 115 drives the first roller 1191 to roll along the first strip groove 1181 on the first slider 118, thereby driving the first slider 118 to drive the first outer needle 111 relative to the first fixed needle 113 away from the second outer needle 112, so that the radial size of the outer peripheral surface of the winding needle assembly 11 increases. At this time, the winding needle assembly 11 is used to wind the material strip A to form the winding core A2.

[0089] When the external force acting on the first push rod 115 disappears, the first push rod 115 moves away from the winding needle seat 117 along the axial direction u of the winding needle assembly 11 under the action of the elastic force provided by the fourth elastic member 1193, and the first push rod 115 drives the first roller 1191 to roll along the first strip groove 1181 on the first slider 118, thereby driving the first slider 118 to drive the first outer needle 111 relative to the first fixed needle 113 to approach the second outer needle 112, so that the radial dimension of the outer peripheral surface of the winding needle assembly 11 is reduced, so as to facilitate the unloading of the winding core A2 on the winding needle assembly 11.

[0090] Furthermore, a second strip groove 1131 is formed on the first fixed needle 113, and the second strip groove 1131 extends longitudinally along the axial direction u of the winding needle assembly 11. The winding needle assembly 11 also includes a second roller 1192 rotatably connected to the first push rod 115. The second roller 1192 is in rolling engagement with the second strip groove 1131. Thus, when the first push rod 115 moves, the first push rod 115 drives the second roller 1192 to roll along the second strip groove 1131. Since the longitudinal direction of the second strip groove 1131 is parallel to the axial direction u of the winding needle assembly 11, the second strip groove 1131 can be used to guide the movement of the first push rod 115 along the axial direction u of the winding needle assembly 11.

[0091] Specifically in the embodiment, the needle winding assembly 11 further includes a second push rod 116, a second slider 1194 (see Figure 16) and a third roller (not shown). The second push rod 116 is movably connected to the second fixed needle 114 along the axial direction u of the winding needle assembly 11. The second slider 1194 is movably connected to the second fixed needle 114 along the radial direction v of the winding needle assembly 11. The second outer needle 112 is connected to the second slider 1194, so that the second outer needle 112 can move along the radial direction V of the winding needle assembly 11 (that is, close to or away from the first outer needle 112) with the second slider 1194. A third strip groove (not shown) is provided on the second slider 1194, and the longitudinal extension direction of the third strip groove is inclined to the axial direction u and radial direction v of the winding needle assembly 11. The third roller is rotatably connected to the second push rod 116 and rolls with the third strip groove. In this way, when the second push rod 116 moves along the axial direction u of the winding needle assembly 11 under the action of external force, the second push rod 116 drives the third roller to roll along the third strip groove on the second slider 1194. Since the longitudinal extension direction of the third strip groove is inclined to the axial u and radial v of the winding needle assembly 11, when the third roller rolls along the third strip groove on the second slider 1194, it can drive the second slider 1194 to move along the radial v of the winding needle assembly 11, and then the second slider 1194 drives the second outer needle 112 to move relative to the second fixed needle 114 along the radial v of the winding needle assembly 11, so as to increase or decrease the radial size of the outer peripheral surface of the winding needle assembly 11.

[0092] Furthermore, the winding needle assembly 11 further includes a fifth elastic member 1195, which abuts the winding needle seat 117 and the end of the second push rod 116 facing the winding needle seat 117, and is used to provide an elastic force that causes the second push rod 116 to have a movement tendency away from the winding needle seat 117. In this way, when the second push rod 116 moves toward the winding needle seat 117 along the axial direction u of the winding needle assembly 11 under the action of an external force, the fifth elastic member 1195 is pressed and further compressed by the second push rod 116, and the second push rod 116 drives the third roller to roll along the third strip groove on the second slider 1194, thereby driving the second slider 1194 to drive the second outer needle 112 relative to the second fixed needle 114 away from the first outer needle 111, so that the radial size of the outer peripheral surface of the winding needle assembly 11 increases. At this time, the winding needle assembly 11 is used to wind the material strip A to form the winding core A2.

[0093] When the external force acting on the second push rod 116 disappears, the second push rod 116 moves away from the winding needle seat 117 along the axial direction u of the winding needle assembly 11 under the action of the elastic force provided by the fifth elastic member 1195, and the second push rod 116 drives the third roller to roll along the third strip groove on the second slider 1194, thereby driving the second slider 1194 to drive the second outer needle 112 relative to the second fixed needle 114 to approach the first outer needle 111, so that the radial dimension of the outer peripheral surface of the winding needle assembly 11 is reduced, so as to facilitate the unloading of the winding core A2 on the winding needle assembly 11.

[0094] Furthermore, the second fixed needle 114 is provided with a fourth strip groove extending longitudinally along the axial direction u of the winding needle assembly 11. The winding needle assembly 11 also includes a fourth roller rotatably connected to the second push rod 116. The fourth roller engages in rolling engagement with the fourth strip groove. Thus, when the second push rod 116 moves, the second push rod 116 drives the fourth roller to roll along the fourth strip groove. Because the longitudinal direction of the fourth strip groove is parallel to the axial direction u of the winding needle assembly 11, the fourth strip groove can be used to guide the movement of the second push rod 116 along the axial direction u of the winding needle assembly 11.

[0095] Please continue to see Figures 1 to 5 In an embodiment of the present application, the winding apparatus further includes a turret 30, and the number of winding needle mechanisms 10 is at least two. The turret 30 is rotatably arranged, and the winding needle assembly 11 of each winding needle mechanism 10 is rotatably connected to the turret 30 via a winding needle seat 117. As the winding needle assembly 11 of each winding needle mechanism 10 rotates with the turret 30, it passes through the first station a1 and the second station a2 in sequence. When the winding needle assembly 11 at the first station a1 rotates with the turret 30 to the second station a2, another winding needle assembly 11 rotates with the turret 30 to the first station a1.

[0096] In this way, when the winding of the core A2 on the winding needle assembly 11 located at the first workstation a1 is completed, first, the material strip A continues to be transported downstream, and the turret 30 drives the winding needle assembly 11 located at the first workstation a1 to rotate to the second workstation a2, and the other winding needle assembly 11 rotates to the first workstation a1 with the turret 30. At this point, the winding needle assembly 11 at the first station a1 rotates about its own axis. Simultaneously, the first rolling assembly 21 drives the first pressing roller 211 to press the portion of the web A located upstream of the cutter 233 against the winding needle assembly 11 at the first station a1. The second rolling assembly 22 drives the second pressing roller 221 to press the portion of the web A located downstream of the cutter 233 against the winding needle assembly 11 at the first station a1. The rotating shaft 232 moves closer to the winding needle assembly 11 at the first station a1 to the rolling cutting position. The slit 110 on the winding needle assembly 11 at the first station a1 rotates until it faces the cutter 233 and push plate 234 on the rotating shaft 232. At this point, the rotating shaft 232 drives the cutter 233 to rotate, causing it to contact the web A and sever it (i.e., the cutter 233 performs rolling cutting on the web A passing through it). Then, under the action of the air flow blown out from the blowing port 236, the upstream cut end A1 of the material strip A is blown into the gap 110 of the winding needle assembly 11 located at the first work station a1, and then under the pushing action of the push plate 234, the clamping rod 12 is rotated from the release position to the clamping position to clamp the upstream cut end A1 of the material strip A entering the gap 110 on the clamping surface B.

[0097] After the upstream cut end A1 of the web A is blown into the gap 110 of the winding needle assembly 11 at the first station a1, the drive assembly gradually moves the rotating shaft 232 away from the winding needle assembly 11 at the first station a1. This causes the cutter 233 and push plate 234 on the rotating shaft 232 to move away from the winding needle assembly 11 at the first station a1, thereby clearing the winding needle assembly 11. The first rolling assembly 21 then drives the first pressure roller 211 away from the winding needle assembly 11 at the first station a1. After the winding needle assembly 11 at the first station a1 has wound the web A around its outer circumference at least once, the second rolling assembly 22 drives its second pressure roller 221 away from the winding needle assembly 11 at the first station a1. During this process, the winding needle assembly 11 at the first station a1 continues to rotate, winding the web A around its outer circumference to form a winding core A2.

[0098] After the material strip A is cut by the cutter 233, the winding needle assembly 11 located at the second work station a2 continues to wind until the cut material strip A is completely wound onto its outer peripheral surface, and then the winding core A2 on the winding needle assembly 11 located at the second work station a2 is subjected to actions such as affixing finishing tape and / or unloading.

[0099] It should be noted that, in other embodiments, the winding needle assembly 11 of each winding needle mechanism 10 may also pass through the third station a3 during the process of rotating with the turret 30. That is to say, the winding needle assembly 11 of each winding needle mechanism 10 passes through the first station a1, the second station a2, and the third station a3 in sequence during the process of rotating with the turret 30. At the first station a1, the winding needle assembly 11 winds the material strip A conveyed from upstream to form a core A2. At the second station a2, the winding needle assembly 11 applies finishing glue to the core A2 on the winding needle assembly 11 to prevent the core A2 on the winding needle assembly 11 from becoming loose. At the third station a3, the winding needle assembly 11 unloads the core A2 on the winding needle assembly 11. In the embodiment where the winding needle assembly 11 passes through three workstations (i.e., the first workstation a1, the second workstation a2, and the third workstation a3), the winding operation steps of the winding equipment are similar to those in the embodiment where the winding needle assembly 11 passes through two workstations (i.e., the first workstation a1 and the second workstation a2), so they will not be repeated here.

[0100] It should be noted that the winding operation steps described above are only one embodiment. Of course, in other embodiments, other winding operation steps can also be adopted as long as they can achieve the winding and forming of the core A2, and are not limited here.

[0101] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0102] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A needle winding mechanism, characterized in that: include: A winding needle assembly having a clamping gap and a clamping surface serving as a side wall of the clamping gap, wherein the winding needle assembly can be controlled to rotate to wind the material strip; A fixed bracket, mounted on the needle winding assembly; A rotating bracket is rotatably connected to the fixed bracket, a clamping rod, located in the clamping gap and mounted on the rotating bracket, so as to rotate with the rotating bracket between a clamping position in contact with the clamping surface and a release position separated from the clamping surface; and A third elastic member, wherein both ends of the third elastic member are respectively connected to the fixed bracket and the rotating bracket to provide elastic force to drive the rotating bracket to drive the clamping rod to rotate to the clamping position or the release position.

2. The needle winding mechanism according to claim 1, characterized in that: The fixed bracket has a limiting portion. When the rotating bracket drives the clamping rod to rotate to the release position, the limiting portion cooperates with the rotating bracket stop to prevent the rotating bracket from driving the clamping rod to rotate away from the clamping surface.

3. The needle winding mechanism according to claim 1, characterized in that: The needle winding assembly includes a needle winding seat, a first fixed needle, a second fixed needle, a first outer needle and a second outer needle. The needle winding seat can rotate in a controlled manner. One end of the first fixed needle and the second fixed needle are both installed on the needle winding seat and arranged opposite to each other; the first outer needle is arranged on the first fixed needle, and the second outer needle is arranged on the second fixed needle, and the gap is formed between the first outer needle and the second outer needle. The side surface of the first outer needle facing the second outer needle includes the clamping surface, and the fixing bracket is installed on the first fixed needle and / or the second fixed needle.

4. The needle winding mechanism according to claim 3, characterized in that: The first outer needle and the second outer needle can be controlled to move closer to or farther away from each other relative to the first fixing needle and the second fixing needle respectively; The needle winding mechanism also includes a reset block installed on the first outer needle or the second outer needle. When the first outer needle and the second outer needle approach each other, the first outer needle or the second outer needle drives the reset block to push the rotating bracket, so that the rotating bracket drives the clamping rod to rotate from the clamping position to the release position.

5. The needle winding mechanism according to claim 4, characterized in that: The winding needle assembly also includes a first push rod, a first slider and a first roller. The first push rod is movably connected to the first fixed needle along the axial direction of the winding needle assembly. The first slider is movably connected to the first fixed needle along the radial direction of the winding needle assembly. The first outer needle is connected to the first slider. A first strip groove is provided on the first slider. The longitudinal extension direction of the first strip groove is inclined to the axial and radial directions of the winding needle assembly. The first roller is rotatably connected to the first push rod and rolls with the first strip groove.

6. The needle winding mechanism according to claim 5, characterized in that: The winding needle assembly further includes a fourth elastic member, which abuts between the winding needle seat and one end of the first push rod facing the winding needle seat, and is used to provide an elastic force that causes the first push rod to have a movement tendency away from the winding needle seat.

7. The needle winding mechanism according to claim 5, characterized in that: A second strip groove is provided on the first fixed needle, and the second strip groove extends longitudinally along the axial direction of the winding needle assembly; the winding needle assembly also includes a second roller rotatably connected to the first push rod, and the second roller is in rolling engagement with the second strip groove.

8. The needle winding mechanism according to claim 4, characterized in that: The winding needle assembly also includes a second push rod, a second slider and a third roller. The second push rod is movably connected to the second fixed needle along the axial direction of the winding needle assembly. The second slider is movably connected to the second fixed needle along the radial direction of the winding needle assembly. The second outer needle is connected to the second slider. A third strip groove is provided on the second slider. The longitudinal extension direction of the third strip groove is inclined to the axial and radial directions of the winding needle assembly. The third roller is rotatably connected to the second push rod and rollingly cooperates with the third strip groove.

9. The needle winding mechanism according to claim 8, characterized in that: The winding needle assembly further includes a fifth elastic member, which abuts against the winding needle seat and one end of the second push rod facing the winding needle seat, and is used to provide an elastic force that causes the second push rod to have a movement tendency away from the winding needle seat.

10. The needle winding mechanism according to claim 1, characterized in that: The clamping rod can be rotated from the release position to the clamping position under the pushing action of the push plate, and the surface of the clamping rod used for contacting with the push plate is an arc surface.

11. A winding device, characterized in that: The invention comprises a needle winding mechanism according to any one of claims 1 to 10.

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