Winding equipment

Abstract

The utility model relates to winding equipment. The winding equipment comprises a winding needle mechanism which comprises a winding needle and a cutter, the winding needle is provided with a peripheral face and a containing concave part formed in the peripheral face, the winding needle can be controlled to rotate so as to wind a material belt to the peripheral face, the cutter is arranged in the containing concave part, the peripheral face is provided with an adsorption area located on the upstream side of the containing concave part, and the adsorption area is located on the upstream side of the containing concave part; the adsorption area is configured to controllably adsorb a passing material belt; the material pressing mechanism comprises a rolling assembly and a material pushing assembly, the rolling assembly is used for pressing the material belt to the peripheral face in an abutting mode, the material pushing assembly comprises a rotating part and a material pushing part arranged on the rotating part, the rotating part can controllably rotate to drive the material pushing part to rotate to be opposite to the containing concave part on the peripheral face, and the material pushing part is used for feeding the material belt into the containing concave part; the cutter is used for cutting off the material belt entering the containing concave part.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing equipment, and specifically to a winding device. 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 device that can simplify the structure and improve production efficiency to address the above problems.

[0005] A winding device comprising:

[0006] A winding needle mechanism, comprising a winding needle and a cutter, wherein the winding needle has an outer peripheral surface and a receiving recess provided on the outer peripheral surface, the winding needle can be controlled to rotate to wind the material strip onto the outer peripheral surface, the cutter is disposed in the receiving recess, and the outer peripheral surface has an adsorption area located upstream of the receiving recess, the adsorption area being configured to controllably adsorb the material strip passing therethrough; and

[0007] The pressing mechanism includes a roller assembly and a pushing assembly, the roller assembly is used to press the material strip against the outer peripheral surface, the pushing assembly includes a rotating part and a pushing part arranged on the rotating part, the rotating part can rotate in a controlled manner to drive the pushing part to rotate to be opposite to the receiving recess on the outer peripheral surface, the pushing part is used to feed the material strip into the receiving recess, and the cutter is used to cut the material strip entering the receiving recess.

[0008] In some embodiments, the winding needle has a vacuum cavity inside, and the vacuum cavity is used to communicate with an external negative pressure source. The adsorption area is provided with a plurality of adsorption holes that are connected with the vacuum cavity.

[0009] In some embodiments, a plurality of cavities are provided inside the winding needle, and the cavities and the vacuum chambers are spaced apart along the circumference of the winding needle. A heating plate is provided on the inner wall of each cavity and the vacuum chamber close to the outer peripheral surface.

[0010] In some embodiments, a plurality of through holes are formed on the heating plate located in the vacuum chamber, and each of the through holes is connected to a corresponding adsorption hole.

[0011] In some embodiments, the needle winding mechanism further includes an electrical integrated slip ring, the rotor of the electrical integrated slip ring being fixedly connected to the needle winding, and the stator of the electrical integrated slip ring having a first vacuum joint and a first conductive joint, the first vacuum joint being used to communicate with an external negative pressure source via a gas pipeline, and the first conductive joint being used to communicate with an external power source via a conductive line;

[0012] The rotor of the electrical integrated slip ring has a second vacuum joint connected to the first vacuum joint and a second conductive joint electrically connected to the first conductive joint. The second vacuum joint is connected to the vacuum chamber through a vacuum tube, and the second conductive joint is electrically connected to each of the heating plates through a wire.

[0013] In some embodiments, the cutter is a hot cutter.

[0014] In some embodiments, the cutter is provided with a mounting hole, and a heating element is passed through the mounting hole.

[0015] In some embodiments, the rotating portion is provided with two pushing portions, and the two pushing portions are spaced apart along the rotation direction of the rotating portion so that a gap is formed between the two pushing portions;

[0016] When the two pushing parts send the passing material strips into the receiving recess, the gap is used to receive the cutter.

[0017] In some embodiments, the pushing assembly further comprises a fixed seat, a mounting seat and a first elastic member, the mounting seat being arranged on the fixed seat and being controllably movable closer to or farther away from the winding needle relative to the fixed seat, the first elastic member being abutted between the fixed seat and the mounting seat to provide a pre-tightening force causing the mounting seat to have a movement tendency towards the winding needle, the rotating portion being arranged on the mounting seat and being controllably rotatable relative to the mounting seat.

[0018] In some embodiments, the rolling assembly includes a first rolling assembly having a first pressing roller rotatable around its own axis, and the first rolling assembly can controllably drive the first pressing roller to press the portion of the material strip located upstream of the cutter onto the adsorption area.

[0019] In some embodiments, the rolling assembly further includes a second rolling assembly having a second pressing roller rotatable around its own axis, and the second rolling assembly can controllably drive the second pressing roller to press the portion of the material strip located downstream of the cutter onto the outer peripheral surface.

[0020] In actual use, the aforementioned winding device transports the material strip downstream at a certain speed and passes through the first station. At the first station, the winding needle continues to rotate around its own axis, and the roller assembly presses the material strip against the outer circumference of the winding needle, causing the adsorption area of ​​the winding needle to adsorb and fix the material strip. At the same time, the rotating portion drives the pushing portion to rotate. When the rotating portion drives the pushing portion and the receiving recess relative to each other, the pushing portion pushes the passing material strip into the receiving recess, causing the material strip entering the receiving recess to be cut by the cutter. At this time, the upstream cut end formed after the material strip is cut is adsorbed and fixed to the outer circumference of the winding needle by the adsorption area. The winding needle continues to rotate around its own axis, thereby winding the material strip onto the outer circumference of the winding needle to form a winding core. That is to say, in the process that the rolling assembly presses the material strip against the outer peripheral surface of the winding needle and the pushing part pushes the passing material strip into the receiving recess of the winding needle, the winding needle always keeps rotating around its own axis, the material strip also keeps being transported downstream, the rotating part keeps rotating to drive the pushing part to rotate, and the passing material strip is cut in flight under the cooperation of the pushing part and the cutter.

[0021] In this way, while the material strip continues to be conveyed downstream, the rotation of the winding needle and the rotating unit drives the pusher unit and the receiving recess on the winding needle toward each other. The pusher unit then pushes the passing material strip into the receiving recess on the winding needle, causing the cutter inside the receiving recess to cut the material strip, thus achieving fly-cutting of the material strip. The upstream cut end of the material strip is attracted and fixed by the suction area on the winding needle, allowing the material strip A to be wound onto the outer circumference of the winding needle to form a winding core. During this process, the material strip continues to be conveyed downstream and the winding needle continues to rotate. There is no need to stop the material strip conveyance or the winding needle rotation. This not only saves waiting time for equipment startup and shutdown, but also greatly improves production efficiency. It also eliminates actions such as needle threading and film splicing, greatly simplifying the structure of the winding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a winding device in one embodiment of the present application;

[0023] Figure 2 for Figure 1 The structural diagram of the material pressing mechanism and the winding needle mechanism of the winding device shown;

[0024] Figure 3 for Figure 1 A cross-sectional view of the winding needle mechanism of the winding device shown;

[0025] Figure 4 for Figure 1 A side view of the winding needle mechanism of the winding device is shown;

[0026] Figure 5 for Figure 2 The structural diagram of the rotating part and the pushing part of the pressing mechanism shown;

[0027] Figure 6 for Figure 1 The structural schematic diagram of the pressing mechanism of the winding equipment is shown. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0029] In the description of the present application, 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 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 application 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 application.

[0030] 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 defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0031] In this application, 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 or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0032] In this application, 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 intermediate medium. 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.

[0033] 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.

[0034] See also Figures 1 to 3 The present application provides a winding device, including a winding needle mechanism 10 and a material pressing mechanism 20. The winding needle mechanism 10 includes a winding needle 11 and a cutter 12. The winding needle 11 has an outer peripheral surface 110 (see Figure 3 ) and the receiving recess 111 (see Figure 3). The winding needle 11 can be rotated in a controlled manner to wind the material strip A onto the outer circumferential surface 110 of the winding needle 11. The cutter 12 is arranged in the receiving recess 111 of the winding needle 11, so that the cutter 12 rotates synchronously with the winding needle 11. There is an adsorption area 1101 on the outer circumferential surface 110 of the winding needle 11. The adsorption area 1101 is located on the upstream side of the receiving recess 111 and is configured to controllably adsorb and fix the material strip A passing through. The pressing mechanism 20 includes a roller assembly 21 and a pushing assembly 22. The roller assembly 21 is used to press the material strip A onto the outer circumferential surface 110 of the winding needle 11, and the pushing assembly 22 includes a rotating part 221 and a pushing part 222 arranged on the rotating part 221. The rotating part 221 can be rotated in a controlled manner to drive the pushing part 222 to rotate to be opposite to the receiving recess 111 on the outer circumferential surface 110 of the winding needle 11 located at the first station a1. The pushing portion 222 is used to push the material strip A into the receiving recess 111 , so that the cutter 12 cuts the material strip A that has entered the receiving recess 111 .

[0035] In actual use, the winding apparatus described above transports the web A downstream at a constant speed, passing through the first station a1. At this station a1, the winding needle 11 rotates continuously about its axis, and the roller assembly 21 presses the web A against the outer circumference 110 of the winding needle 11, causing the suction area 1101 of the winding needle 11 to absorb and secure the web A. Simultaneously, the rotating portion 221 rotates the pushing portion 222. When the rotating portion 221 brings the pushing portion 222 into alignment with the receiving recess 111, the pushing portion 222 pushes the passing web A into the receiving recess 111, whereupon the web A is severed by the cutter 12. The upstream end of the severed web A is then held by the suction area 1101 against the outer circumference 110 of the winding needle 11. The winding needle 11 continues to rotate about its axis, winding the web A onto the outer circumference 110 of the winding needle 11 to form the winding core 100. That is to say, in the process that the rolling assembly 21 presses the material strip A against the outer peripheral surface 110 of the winding needle 11 and the pushing part 222 pushes the passing material strip A into the receiving recess 111 of the winding needle 11, the winding needle 11 always keeps rotating around its own axis, and the material strip A also keeps being transported downstream. The rotating part 221 keeps rotating to drive the pushing part 222 to rotate, and the passing material strip A is cut in flight under the cooperation of the pushing part 222 and the cutter 12.

[0036] In this way, while the material strip A continues to be conveyed downstream, the rotation of the winding needle 11 and the rotating portion 221 drives the pushing portion 222 and the receiving recess 111 on the winding needle 11 toward each other. The pushing portion 222 then pushes the passing material strip A into the receiving recess 111 on the winding needle 11, causing the cutter 12 in the receiving recess 111 to cut the material strip A, thereby performing fly-cutting on the material strip A. The upstream cut end of the cut material strip A is attracted and fixed by the suction area 1101 on the winding needle 11, allowing the material strip A to be wound onto the outer peripheral surface 110 of the winding needle 11 to form the winding core 100. During this process, the material strip A continues to be conveyed downstream, and the winding needle 11 continues to rotate. There is no need to stop the conveyance of the material strip A or the rotation of the winding needle 11. This not only saves waiting time for the equipment to start and stop, greatly improving production efficiency, but also eliminates the need for needle threading and film splicing, greatly simplifying the structure of the winding equipment.

[0037] It should be noted that in the existing technology, the cutter is arranged on the outside of the winding needle. In order to realize the flying cutting of the material strip A, it is necessary to use a rotating shaft to drive the cutter to rotate. On the one hand, it will make the structure of the winding equipment more complicated. On the other hand, if the rotation speed of the cutter and the winding needle does not match, it is easy to cause the cutter to directly contact the winding needle and damage the winding needle. Therefore, it is necessary to accurately control the rotation speed of the cutter and the winding needle, which requires high precision and is difficult to control.

[0038] In the present application, since the cutter 12 is arranged in the receiving recess 111 on the winding needle 11, it can be ensured that the cutter 12 rotates together with the winding needle 11. On the one hand, the installation structure of the cutter 12 is simple, and the driving mechanism for driving the cutter 12 to rotate and move is omitted, which is conducive to further simplifying the structure of the winding equipment; on the other hand, the cutter 12 always rotates together with the winding needle 11, avoiding the phenomenon that the cutter 12 damages the winding needle 11 due to the mismatch in the rotation speed of the cutter 12 and the winding needle 11.

[0039] It is understood that after the cutter 12 cuts the passing material strip A, an upstream cut end located upstream and a 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 as the downstream material strip A is transported downstream. Under the adsorption action of the adsorption area 1101 on the winding needle 11, the upstream cut end is adsorbed and fixed to the outer peripheral surface 110 of the winding needle 11, allowing the winding needle 11 to wind the material strip A. The upstream and downstream in this article are both relative to the conveying direction of the material strip A. That is, during the process of the material strip A being transported downstream, the position where the material strip A reaches first is the upstream, and the position where it reaches later is the downstream.

[0040] Specifically, in the embodiment, the outer circumferential surface 110 of the winding needle 11 is recessed inward to form a groove, which serves as the aforementioned receiving recess 111. The depth of the receiving recess 111 is greater than the depth of the cutter 12 in the receiving recess 111, thereby preventing the cutter 12 from extending out of the receiving recess 111 and contacting other components, causing damage.

[0041] In the embodiment of the present application, the interior of the winding needle 11 has a vacuum chamber B, which is used to communicate with an external negative pressure source. The adsorption area 1101 on the outer peripheral surface 110 of the winding needle 11 is provided with a plurality of adsorption holes 1102 that are connected to the vacuum chamber B. In this way, the external negative pressure source evacuates the vacuum chamber B, thereby generating negative pressure at each adsorption hole 1102, and then utilizes the negative pressure at each adsorption hole 1102 to adsorb and fix the passing material strip A to the adsorption area 1101 on the outer peripheral surface 110. When it is necessary to release the adsorption of the material strip A, the external negative pressure source stops evacuating the vacuum chamber B, breaking the vacuum in the vacuum chamber B, and the negative pressure at each adsorption hole 1102 disappears, thereby releasing the adsorption and fixation of the material strip A.

[0042] It should be noted that, compared with the prior art solution of clamping and fixing the upstream cut end of the material strip A on the winding needle 11 by setting a clamping mechanism inside the winding needle 11, the present application uses vacuum adsorption to adsorb and fix the upstream cut end of the material strip A on the outer peripheral surface 110 of the winding needle 11, which greatly simplifies the structure of the winding needle 11, and the adsorption response to the upstream cut end of the material strip A is rapid, accurate and reliable.

[0043] Specifically, in this embodiment, the winding needle 11 further defines a plurality of cavities C. These cavities C and the aforementioned vacuum chamber B are spaced apart along the circumference of the winding needle 11. A heating plate 115 is provided on the inner wall of each cavity C and vacuum chamber B, near the outer circumferential surface 110. Each heating plate 115 heats the outer circumferential surface 110 of the winding needle 11, thereby heating the winding core 100 wound around the outer circumferential surface 110 of the winding needle 11. This softens the various layers of the material strips A on the winding core 100, increasing their viscosity and improving the adhesion between the various layers of the material strips A on the winding core 100. This helps reduce the risk of voids forming within the winding core 100 during subsequent hot or cold pressing of the winding core 100.

[0044] Furthermore, a plurality of through holes 1151 are provided on the heating plate 115 located in the vacuum chamber B, and each through hole 1151 is connected to the corresponding adsorption hole 1102, so that each adsorption hole 1102 is connected to the vacuum chamber B through its corresponding through hole 1151, thereby preventing the heating plate 115 from blocking each adsorption hole 1102, resulting in the inability to adsorb the material strip A.

[0045] See Figure 3 and Figure 4Specifically, in the embodiment, the needle winding mechanism 10 also includes an electrical integrated slip ring 13, the rotor 132 of which is fixedly connected to the needle winding 11, allowing the rotor 132 of the electrical integrated slip ring 13 to rotate synchronously with the needle winding 11. The stator 131 of the electrical integrated slip ring 13 has a first vacuum joint b1 and a first conductive joint c1. The first vacuum joint b1 is used to connect to an external negative pressure source via a gas pipeline, and the first conductive joint c1 is used to connect to an external power source via a conductive line. The rotor 132 of the electrical integrated slip ring 13 has a second vacuum joint b2 connected to the first vacuum joint b1 and a second conductive joint c2 electrically connected to the first conductive joint c1. The second vacuum joint b2 is connected to the vacuum chamber B via a vacuum tube, and the second conductive joint c2 is electrically connected to each heating plate 115 via a wire. In this way, the external negative pressure source is sequentially connected to the vacuum chamber B through the first vacuum connector b1, the stator 131 of the electrical integrated slip ring 13, the rotor 132 of the electrical integrated slip ring 13, and the second vacuum connector b2, so that the external negative pressure source can evacuate the vacuum chamber B. The external power supply is sequentially electrically connected to each heating plate 115 through the first conductive connector c1, the stator 131 of the electrical integrated slip ring 13, the rotor 132 of the electrical integrated slip ring 13, and the second conductive connector c2, so that the external power supply can provide electrical energy to each heating plate 115.

[0046] In the embodiment of the present application, the winding needle 11 includes a winding needle shaft 112 and a first outer needle 113 and a second outer needle 114 disposed on the winding needle shaft 112. The first outer needle 113 and the second outer needle 114 are arranged opposite each other, and their outer side walls facing away from each other are combined to form the aforementioned outer peripheral surface 110. A groove is provided on the outer side wall of the first outer needle 113 facing away from the second outer needle 114, and this groove serves as the aforementioned receiving recess 111. In this way, the receiving recess 111 for receiving the cutter 12 is formed by grooves on the outer side wall of the first outer needle 113 facing away from the second outer needle 114, which greatly simplifies the structure of the winding needle 11.

[0047] Furthermore, each adsorption hole 1102 is provided on the outer side wall of the first outer needle 113 facing away from the second outer needle 114, and each adsorption hole 1102 is located on the upstream side of the receiving recess 111. The aforementioned vacuum chamber B is located within the first outer needle 113 to facilitate communication with each adsorption hole 1102. One or more cavities C are provided within each of the first outer needle 113 and the second outer needle 114, so that a heating plate 115 can be disposed within each cavity C. The heating plates 115 can then be used to heat the outer side walls of the first outer needle 113 and the second outer needle 114 facing away from each other (i.e., the aforementioned outer peripheral surface 110).

[0048] Optionally, the first outer needle 113 and the second outer needle 114 are configured to controllably move closer to or farther from each other relative to the winding needle shaft 112, thereby adjusting the radial dimension of the outer circumference 110 of the winding needle 11. Furthermore, a gap D is formed between the first outer needle 113 and the second outer needle 114, which is used to insert a clamping needle that clamps the winding core 100 wound on the outer circumference 110. In this way, when winding is required, the first outer needle 113 and the second outer needle 114 are controlled to move away from each other, thereby increasing the radial size of the outer peripheral surface 110; when the core 100 is wound and needs to be unwound, the clamping needle is inserted into the gap D between the first outer needle 113 and the second outer needle 114 and the core 100 is clamped; then the first outer needle 113 and the second outer needle 114 are controlled to move closer to each other, thereby reducing the radial size of the outer peripheral surface 110, so that the first outer needle 113 and the second outer needle 114 and the core 100 are in a relaxed state; then the winding needle 11 is controlled to move axially to be pulled out from the core 100, thereby realizing the unloading of the core 100.

[0049] It should be noted that the assembly structure between the first outer needle 113 and the second outer needle 114 and the winding needle shaft 112 can adopt relatively mature existing technology, as long as the first outer needle 113 and the second outer needle 114 can be moved closer to or farther away from each other relative to the winding needle shaft 112, and no special limitation is made here.

[0050] It should also be noted that the above-mentioned receiving recess 111 is not limited to being opened on the first outer needle 113. In other embodiments, the receiving recess 111 can also be opened on the second outer needle 114. Of course, in some other embodiments, the receiving recess 111 can also be opened on both the first outer needle 113 and the second outer needle 114. No special limitation is made here.

[0051] Specifically in the embodiment, the above-mentioned cutter 12 can be a hot cutter 12. On the one hand, it ensures that the material strip A passing through can be cut off. On the other hand, in actual use, the material strip A passing through the hot cutter 12 is two layers. After the two layers of material strip A are cut by the hot cutter 12, the upstream cut ends of the two layers of material strip A are bonded together due to heat, so that the upstream cut ends of the two layers of material strip A can be better adsorbed and fixed by the adsorption area 1101, avoiding the phenomenon that only one layer of material strip A is adsorbed and fixed, and the other layer of material strip A is not adsorbed and fixed.

[0052] Optionally, the cutter 12 is provided with a mounting hole (not marked in the figure), and a heating element 121 is passed through the mounting hole, so that the cutter 12 is heated by the heating element 121, and the cutter 12 is further made to hot-cut the material strip A passing through.

[0053] Furthermore, the cutter 12 extends longitudinally along the axis of the winding needle 11, and its length is greater than the width of the material strip A, ensuring that the cutter 12 can cut the material strip A along its width. The mounting hole in the cutter 12 extends longitudinally, and the heater 121 is a long, strip-shaped heating rod inserted into the mounting hole. This allows the heater to uniformly heat all locations along the length of the cutter 12, preventing the cutter 12 from overheating or underheating in certain areas.

[0054] Optionally, the cutter 12 includes a cutter seat 123 and a blade 125 fixedly connected to the cutter seat 123. The cutter seat 123 is fixedly connected to the aforementioned receiving recess 111, and the blade 125 is located on the side of the cutter seat 123 that faces the opening of the receiving recess 111. The aforementioned mounting hole is provided on the cutter seat 123, and the heating element 121 is inserted into the mounting hole on the cutter seat 123. The heat generated by the heating element 121 is transferred to the blade 125 through the cutter seat 123, so that the blade 125 performs thermal cutting on the material strip A entering the receiving recess 111. It should be noted that the heating element 121 can also be electrically connected to an external power source through the aforementioned electrical integrated slip ring 13. Specifically, the second conductive connector c2 is electrically connected to the heating element 121 through a wire, so that the external power supply is electrically connected to the heating element 121 through the first conductive connector c1, the stator 131 of the electrical integrated slip ring 13, the rotor 132 of the electrical integrated slip ring 13 and the second conductive connector c2, thereby enabling the external power supply to provide electrical energy to the heating element 121.

[0055] Please also see Figure 5 In the embodiment of the present application, the rotating portion 221 is provided with two pushers 222 . The two pushers 222 are spaced apart along the rotation direction of the rotating portion 221 , so that a gap B is formed between the two pushers 222 . When the two pushers 222 deliver the passing material strip A into the receiving recess 111 , the gap B between the two pushers 222 is used to accommodate the cutter 12 , thereby avoiding the cutter 12 from colliding with the pushers 222 .

[0056] See Figure 1 and Figure 6 As shown, in this embodiment, the pusher assembly 22 further includes a fixed seat 223, a mounting seat 224, and a first elastic member 225. The mounting seat 224 is mounted on the fixed seat 223 and can be controlled to move closer to or further away from the winding needle 11 located at the first station a1 relative to the fixed seat 223. The first elastic member 225 abuts between the fixed seat 223 and the mounting seat 224 to provide a preload force that forces the mounting seat 224 to move closer to the winding needle 11 located at the first station a1. The rotating portion 221 is mounted on the mounting seat 224 and can be controlled to rotate relative to the mounting seat 224.

[0057] Thus, in actual use, the rotating portion 221 is controlled to rotate relative to the mounting seat 224, thereby driving the pusher portion 222 to rotate. At the same time, the mounting seat 224 is controlled to approach the winding needle 11 located at the first station a1 relative to the fixed seat 223, thereby driving the rotating portion 221 and the pusher portion 222 on the rotating portion 221 to approach the winding needle 11 located at the first station a1. Under the combined action of the rotating portion 221 driving the pusher portion 222 to rotate and the winding needle 11 located at the first station a1 rotating about its own axis, the pusher portion 222 and the receiving recess 111 on the winding needle 11 are made to face each other. Then, driven by the mounting seat 224, the pusher portion 222 pushes the passing material strip A into the receiving recess 111, so that the cutter 12 in the receiving recess 111 cuts the material strip A, thus achieving fly cutting of the material strip A. After the material strip A is cut, the control mounting seat 224 moves relative to the fixed seat 223 toward the direction away from the winding needle 11 located at the first station a1, thereby driving the rotating part 221 and the pushing part 222 on the rotating part 221 to gradually move away from the winding needle 11 located at the first station a1.

[0058] It should be noted that when an abnormality occurs in the operation of the equipment, resulting in a mismatch between the rotational speed of the rotating portion 221 and the winding needle 11 located at the first station a1, the pusher portion 222 will directly abut against the outer circumference 110 of the winding needle 11. Due to the presence of the first elastic member 225, the first elastic member 225 can buffer the impact force between the pusher portion 222 and the outer circumference 110 of the winding needle 11 through its own deformation, thereby preventing the pusher portion 222 from causing a hard impact on the winding needle 11 and damaging the winding needle 11. Optionally, the first elastic member 225 can be a spring.

[0059] It should be noted that the mounting seat 224 can be mounted on the fixed seat 223 via a guide structure such as a guide rail or a guide rod, thereby utilizing this guide structure to guide the movement of the mounting seat 224 relative to the fixed seat 223, thereby ensuring that the movement of the rotating portion 221 and the pusher portion 222 on the rotating portion 221 toward or away from the winding needle 11 located at the first station a1 is more stable and reliable. This guide structure can adopt relatively mature existing technologies, as long as it can provide a guiding function, and is not particularly limited here.

[0060] Furthermore, the pusher assembly 22 also includes a first drive member 227, which is drivably connected to the mounting seat 224, such that the first drive member 227 can drive the mounting seat 224 toward or away from the winding needle 11 located at the first station a1 relative to the fixed seat 223. It should be noted that the first drive member 227 can be a linear drive module, as long as it can provide power for the movement of the mounting seat 224 relative to the fixed seat 223, and is not limited here.

[0061] Furthermore, the pusher assembly 22 further includes a second driving member 226, which is mounted on the mounting seat 224 and is drivingly connected to the rotating portion 221, so that the second driving member 226 can drive the rotating portion 221 to rotate relative to the mounting seat 224. It should be noted that the second driving member 226 can be a rotating driving member such as a motor, as long as it can provide power for the rotation of the rotating portion 221 relative to the mounting seat 224, and is not limited here.

[0062] It should be noted that in some embodiments, the rotating portion 221 may be a rotating roller mounted on the mounting seat 224 via a bearing, allowing the rotating roller to rotate about its own axis relative to the mounting seat 224. The pushing portion 222 may be a protrusion provided on the roller surface of the rotating roller. Because the pushing portion 222 protrudes from the roller surface, when the rotating roller approaches the winding needle 11, the pushing portion 222 can push the passing material A into the receiving recess 111 on the winding needle 11.

[0063] In the embodiment of the present application, the rolling assembly 21 includes a first rolling assembly 21a and a second rolling assembly 21b. The first rolling assembly 21a includes a first pressing roller 211a that is rotatable about its own axis. The first rolling assembly 21a can controllably drive the first pressing roller 211a to press the portion of the material strip A located upstream of the cutter 12 against the suction area 1101 of the winding needle 11 located at the first station a1. The second rolling assembly 21b includes a second pressing roller 211b that is rotatable about its own axis. The second rolling assembly 21b can controllably drive the second pressing roller 211b to press the portion of the material strip A located downstream of the cutter 12 against the outer circumferential surface 110 of the winding needle 11 located at the first station a1. In this way, before the cutter 12 cuts the material strip A, the material strip A passing upstream and downstream of the cutter 12 is pressed against the outer peripheral surface 110 of the winding needle 11 located at the first workstation a1, thereby ensuring that the cutter 12 can accurately cut the passing material strip A, which is beneficial to improving the cutting quality.

[0064] It should be noted that, since the first rolling assembly 21a drives the first pressing roller 211a to press the part of the material strip A located upstream of the cutter 12 onto the adsorption area 1101 of the winding needle 11, after the material strip A is cut by the cutter 12, the upstream cut end of the material strip A is adsorbed and fixed on the adsorption area 1101 of the winding needle 11, ensuring that the winding needle 11 can wind the material strip A onto the outer peripheral surface 110 to form a winding core 100.

[0065] It can be understood that since the first pressing roller 211a of the first rolling assembly 21a and the second pressing roller 211b of the second rolling assembly 21b are both rotatable around their own axes, when the first pressing roller 211a and the second pressing roller 211b respectively press the passing material strip A onto the winding needle 11 located at the first station a1, under the traction action of the downstream, the material strip A can pass between the first pressing roller 211a and the winding needle 11 located at the first station a1 and between the second pressing roller 211b and the winding needle 11 located at the first station a1 and be transported downstream. That is to say, in the process of using the cutter 12 to cut the passing material strip A, the winding needle 11 rotates around its own axis and drives the cutter 12 to rotate together. The rotating part 221 drives the pushing part 222 to rotate, and the material strip A between the pushing part 222 and the winding needle 11 is also transported downstream, and the rotation speed of the rotating part 221, the rotation speed of the winding needle 11 and the conveying speed of the material strip A downstream are matched to ensure that the pushing part 222 sends the material strip A into the receiving recess 111 and the speed of the three is consistent at the moment when it is cut by the cutter 12, so that the pushing part 222 can accurately send the material strip A into the receiving recess 111, and the cutter 12 can accurately and quickly cut the material strip A.

[0066] It should be noted that in some embodiments, the first rolling assembly 21a is mounted on the mounting base 224, so that when the first driving member 227 drives the mounting base 224 toward or away from the winding needle 11 located at the first station a1, the mounting base 224 can drive the pusher assembly 22 and the first rolling assembly 21a toward or away from the winding needle 11 located at the first station a1. In other words, the first rolling assembly 21a and the pusher assembly 22 share the same driving member, eliminating the need for a separate driving member for the first rolling assembly 21a. This greatly simplifies the equipment structure, reduces the required space, and reduces the difficulty of spatial layout of the various components of the pressing mechanism 20.

[0067] Specifically, in this embodiment, the first roller assembly 21a includes a first mounting frame 212a and a second elastic member 213a. The first mounting frame 212a is movably connected to the mounting base 224 via a first guide rod, and the first pressure roller 211a is rotatably connected to the first mounting frame 212a. The second elastic member 213a abuts between the mounting base 224 and the first mounting frame 212a, providing an elastic force that forces the first mounting frame 212a to move relative to the mounting base 224 toward the winding needle 11 located at the first station a1. As the first driving member 227 drives the mounting base 224 toward the winding needle 11 located at the first station a1, the first pressure roller 211a initially presses the passing material strip A against the suction area 1101 of the winding needle 11 located at the first station a1. As the mounting base 224 continues to approach the winding needle 11, the mounting base 224 drives the material pusher 222 to push the passing material strip A into the receiving recess 111. Optionally, the second elastic member 213a may be a compression spring.

[0068] During actual use, when the first driving member 227 drives the mounting seat 224 to approach the winding needle 11 located at the first station a1, the first rolling assembly 21a and the rotating part 221 approach the winding needle 11 located at the first station a1 together, and the first pressing roller 211a of the first rolling assembly 21a first presses the passing material strip A onto the winding needle 11 located at the first station a1, and the pushing part 222 on the rotating part 221 then pushes the passing material strip A into the receiving recess 111 of the winding needle 11 and is cut by the cutter 12. Then, the first driving member 227 drives the mounting seat 224 away from the winding needle 11 at the first station a1. Driven by the mounting seat 224, the pushing portion 222 first exits the receiving recess 111 of the winding needle 11. Then, the first pressing roller 211a of the first rolling assembly 21a separates from the winding needle 11 at the first station a1, that is, the first pressing roller 211a releases the pressure on the passing material strip A (at this time, the upstream cut end of the material strip A is attracted and fixed to the attraction area 1101 of the winding needle 11). At the same time, as the winding needle 11 at the first station a1 continues to rotate, the material strip A is wound onto the outer peripheral surface 110 of the winding needle 11.

[0069] Of course, in other embodiments, the first rolling assembly 21a may not be arranged on the mounting seat 224, and a driving member may be provided to independently drive the first rolling assembly 21a toward or away from the winding needle 11 located at the first workstation a1, which is not limited here.

[0070] It should be noted that in some embodiments, the second rolling assembly 21b is also mounted on the mounting base 224, so that when the first driving member 227 drives the mounting base 224 toward or away from the winding needle 11 located at the first station a1, the mounting base 224 can drive the pusher assembly 22 and the second rolling assembly 21b toward or away from the winding needle 11 located at the first station a1. In other words, the second rolling assembly 21b and the pusher assembly 22 share the same driving member, eliminating the need for a separate driving member for the second rolling assembly 21b. This greatly simplifies the equipment structure, reduces the required space, and reduces the difficulty of spatial layout of the various components of the pressing mechanism 20.

[0071] Specifically, the second rolling assembly 21b includes a second mounting frame 212b and a third elastic member 213b. The second mounting frame 212b is movably connected to the mounting base 224 via a second guide rod, and the second roller 211b is rotatably connected to the second mounting frame 212b. The third elastic member 213b abuts between the mounting base 224 and the second mounting frame 212b, providing a spring force that forces the second mounting frame 212b to move relative to the mounting base 224 toward the winding needle 11 located at the first station a1. Thus, as the first driving member 227 drives the mounting seat 224 toward the winding needle 11 at the first station a1, the second pressing roller 211b first presses the passing material strip A against the outer circumferential surface 110 of the winding needle 11 at the first station a1. As the mounting seat 224 continues to approach the winding needle 11, the mounting seat 224 drives the pushing portion 222 to push the passing material strip A into the receiving recess 111 of the winding needle 11, causing the material strip A to be cut by the cutter 12 in the receiving recess 111. Optionally, the third elastic member 213b may be a compression spring.

[0072] During actual use, when the first driving member 227 drives the mounting seat 224 to approach the winding needle 11 located at the first station a1, the second rolling assembly 21b and the pushing portion 222 approach the winding needle 11 located at the first station a1 together, and the second pressing roller 211b of the second rolling assembly 21b first presses the passing material strip A against the outer peripheral surface 110 of the winding needle 11 located at the first station a1, and the mounting seat 224 then drives the pushing portion 222 to push the passing material strip A into the receiving recess 111 of the winding needle 11, so that the material strip A is cut by the cutter 12 in the receiving recess 111. After the material strip A is cut, the first driving member 227 drives the mounting seat 224 away from the winding needle 11 located at the first work station a1. Driven by the mounting seat 224, the pushing portion 222 first withdraws from the receiving recess 111, and then the second pressing roller 211b of the second rolling assembly 21b is separated from the winding needle 11 located at the first work station a1, that is, the second pressing roller 211b releases the pressure on the passing material strip A.

[0073] Of course, in other embodiments, the second rolling assembly 21b may not be arranged on the mounting seat 224, and a driving member may be provided to independently drive the second rolling assembly 21b to move closer to or away from the winding needle 11 located at the first station a1, which is not limited here.

[0074] Please continue to see Figure 1As shown, in an embodiment of the present application, the winding apparatus further includes a turret 30 and at least two winding needle mechanisms 10. The turret 30 is rotatably mounted, and the winding needle 11 of each winding needle mechanism 10 is rotatably connected to the turret 30 via a winding needle shaft 112. As the winding needle 11 of each winding needle mechanism 10 rotates with the turret 30, it sequentially passes through a first station a1 and a second station a2. When the winding needle 11 at the first station a1 rotates with the turret 30 to the second station a2, another winding needle 11 rotates with the turret 30 to the first station a1.

[0075] Thus, when the winding core 100 on the winding needle 11 at the first station a1 is completed, the material strip A first continues to be transported downstream. The turret 30 drives the winding needle 11 at the first station a1 to rotate to the second station a2. The other winding needle 11 then rotates with the turret 30 to the first station a1. At this time, the winding needle 11 at the first station a1 rotates about its own axis. Simultaneously, the first rolling assembly 21a drives the first pressing roller 211a to press the portion of the material strip A upstream of the cutter 12 against the suction area 1101 of the winding needle 11 at the first station a1. The second rolling assembly 21b drives the second pressing roller 211b to press the portion of the material strip A downstream of the cutter 12 against the outer circumferential surface 110 of the winding needle 11 at the first station a1. The rotating portion 221 moves closer to the winding needle 11 at the first station a1, simultaneously rotating the rotating portion 221 and rotating the material pusher 222 thereon. This causes the winding needle 11 at the first station a1 to rotate, so that the material pusher 222 on the rotating portion 221 and the receiving recess 111 on the winding needle 11 face each other. The material pusher 222 pushes the passing material strip A into the receiving recess 111, thereby causing the cutter 12 in the receiving recess 111 to cut the material strip A. At this point, the upstream cut end of the material strip A is attracted and fixed to the suction area 1101 of the winding needle 11 at the first station a1.

[0076] After the material strip A is cut by the cutter 12, the rotating portion 221, driven by the first drive member 227, gradually moves away from the winding needle 11 at the first station a1, causing the pusher portion 222 on the rotating portion 221 to exit the receiving recess 111 on the winding needle 11. The first rolling assembly 21a then drives the first pressure roller 211a away from the winding needle 11 at the first station a1. After the winding needle 11 at the first station a1 has wound the material strip A around its outer circumference 110 at least once, the second rolling assembly 21b drives its second pressure roller 211b away from 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 around its outer circumference 110 to form the winding core 100.

[0077] After the material strip A is cut by the cutter 12, the winding needle 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 110, and then the winding core 100 on the winding needle 11 located at the second work station a2 is subjected to actions such as applying finishing tape and / or unloading.

[0078] It should be noted that, in other embodiments, the winding needle 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, the winding needle 11 of each winding needle mechanism 10 may pass 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 11 winds the material strip A conveyed upstream to form a core 100. At the second station a2, the winding needle 11 applies finishing glue to the core 100 on the winding needle 11 to prevent the core 100 on the winding needle 11 from becoming loose. At the third station a3, the winding needle 11 unloads the core 100 on the winding needle 11. In the embodiment where the winding needle 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 11 passes through two workstations (i.e., the first workstation a1 and the second workstation a2), so they will not be repeated here.

[0079] 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 100, and are not limited here.

[0080] 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.

[0081] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A winding device, characterized in that: include: A winding needle mechanism includes a winding needle and a cutter. The winding needle has an outer peripheral surface and a receiving recess formed in the outer peripheral surface. The winding needle can be controlled to rotate to wind the material strip onto the outer peripheral surface. The cutter is disposed in the receiving recess. The outer peripheral surface has a suction area located upstream of the receiving recess. The suction area is configured to controllably suck the material strip passing through. and The pressing mechanism includes a roller assembly and a pushing assembly, the roller assembly is used to press the material strip against the outer peripheral surface, the pushing assembly includes a rotating part and a pushing part arranged on the rotating part, the rotating part can rotate in a controlled manner to drive the pushing part to rotate to be opposite to the receiving recess on the outer peripheral surface, the pushing part is used to feed the material strip into the receiving recess, and the cutter is used to cut the material strip entering the receiving recess.

2. The winding device according to claim 1, characterized in that The winding needle has a vacuum cavity inside, and the vacuum cavity is used to communicate with an external negative pressure source. The adsorption area is provided with a plurality of adsorption holes that are communicated with the vacuum cavity.

3. The winding device according to claim 2, characterized in that A plurality of cavities are further provided inside the winding needle. The cavities and the vacuum chamber are spaced apart along the circumference of the winding needle. A heating plate is provided on the inner wall of each cavity and the vacuum chamber close to the outer peripheral surface.

4. The winding device according to claim 3, characterized in that A plurality of through holes are provided on the heating plate in the vacuum chamber, and each of the through holes is communicated with the corresponding adsorption hole.

5. The winding device according to claim 3, characterized in that The needle winding mechanism further includes an electrical integrated slip ring, the rotor of which is fixedly connected to the needle winding, and the stator of which is provided with a first vacuum joint and a first conductive joint, wherein the first vacuum joint is used to communicate with an external negative pressure source via a gas pipeline, and the first conductive joint is used to communicate with an external power source via a conductive line; The rotor of the electrical integrated slip ring has a second vacuum joint connected to the first vacuum joint and a second conductive joint electrically connected to the first conductive joint. The second vacuum joint is connected to the vacuum chamber through a vacuum tube, and the second conductive joint is electrically connected to each of the heating plates through a wire.

6. The winding device according to claim 1, characterized in that The cutter is a hot cutter.

7. The winding device according to claim 6, characterized in that The cutter is provided with a mounting hole, and a heating element is passed through the mounting hole.

8. The winding device according to claim 1, characterized in that The rotating part is provided with two pushing parts, and the two pushing parts are arranged at intervals along the rotation direction of the rotating part so that a gap is formed between the two pushing parts; When the two pushing parts send the passing material strips into the receiving recess, the gap is used to receive the cutter.

9. The winding device according to claim 1, characterized in that The pushing assembly also includes a fixed seat, a mounting seat and a first elastic member. The mounting seat is arranged on the fixed seat and can be controlled to move closer to or away from the winding needle relative to the fixed seat. The first elastic member abuts between the fixed seat and the mounting seat to provide a pre-tightening force that causes the mounting seat to have a movement tendency close to the winding needle. The rotating part is arranged on the mounting seat and can be controlled to rotate relative to the mounting seat.

10. The winding device according to claim 1, characterized in that The rolling assembly includes a first rolling assembly having a first pressing roller rotatable around its own axis. The first rolling assembly can controllably drive the first pressing roller to press the portion of the material strip located upstream of the cutter onto the adsorption area.

11. The winding device according to claim 1, characterized in that The rolling assembly also includes a second rolling assembly having a second pressing roller rotatable around its own axis. The second rolling assembly can controllably drive the second pressing roller to press the portion of the material strip located downstream of the cutter onto the outer peripheral surface.

Images