Winding needle mechanism and winding equipment

Abstract

The utility model relates to a winding needle mechanism and winding equipment. The winding needle mechanism includes: a winding needle having an outer peripheral surface and an accommodating recess; the cutter is arranged in the accommodating concave part and is used for cutting off the material belt entering the accommodating concave part; wherein the outer circumferential surface is provided with an adsorption area located on the upstream side of the containing concave part, and the adsorption area is configured to controllably adsorb the passing material belt. Therefore, under the condition that downstream conveying of the material belt is not stopped, the passing material belt is pushed into the accommodating concave part on the winding needle, so that the material belt is cut off by the cutter in the accommodating concave part, and fly cutting of the material belt is realized. And the upstream cut-off end formed after the material belt is cut off is adsorbed and fixed by the adsorption area on the winding needle, so that the material belt is wound on the peripheral surface of the winding needle to form a winding core. In the process, the conveying of the material belt does not need to be stopped, on one hand, the waiting time for starting and stopping the equipment is saved, and the production efficiency is greatly improved; and on the other hand, needle threading, film combining and other actions are omitted, and the structure of winding equipment is greatly simplified.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing equipment technology, specifically a needle winding mechanism and winding equipment. Background Technology

[0002] The battery cell is an important component of a battery and can be manufactured by winding various layers of material strips (such as separator, anode plate, separator and cathode plate).

[0003] In existing technology, the layers of material strips are brought together by a film-coating mechanism before entering the winding needle at the first station for winding. After winding one cell, the winding needle at the first station switches to the second station, while another winding needle switches to the first station. At this time, the layers of material strips, brought together by the film-coating mechanism, pass through the first station, where the winding needle at the first station extends from the turret to complete the threading (i.e., the material strip enters the slit of the winding needle). Then, the inner clamping needle in the winding needle clamps the material strip, and then the cutter located between the first and second stations cuts the material strip. Then, the winding needle at the first station begins winding the next cell. In summary, the winding process in existing technology is complex, resulting in a complex structure for the winding equipment and low production efficiency. Utility Model Content

[0004] Therefore, it is necessary to provide a needle winding mechanism and winding equipment that can simplify the structure and improve production efficiency to address the above problems.

[0005] A winding apparatus, comprising:

[0006] A needle winding mechanism includes a needle winding and a cutter. The needle winding has an outer peripheral surface and a receiving recess formed on the outer peripheral surface. The needle winding is controllably rotatable to wind a strip onto the outer peripheral surface. The cutter is disposed within the receiving recess. The outer peripheral surface has an adsorption region located upstream of the receiving recess. The adsorption region is configured to controllably adsorb passing strip.

[0007] The pressing mechanism includes a roller pressing assembly and a pushing assembly. The roller pressing assembly is used to press the material strip against the outer peripheral surface. The pushing assembly includes a rotating part and a pushing part disposed on the rotating part. The rotating part can be rotated 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. The cutter is used to cut the material strip that enters the receiving recess.

[0008] In some embodiments, the inside of the needle has a vacuum chamber for communication with an external negative pressure source, and the adsorption area has a plurality of adsorption holes communicating with the vacuum chamber.

[0009] In some embodiments, the inner part of the winding needle is further provided with a plurality of cavities, each of the cavities and the vacuum cavity are arranged along the circumference of the winding needle, and each of the cavities and the vacuum cavity is provided with a heating sheet near the inner wall of the outer circumferential surface.

[0010] In some embodiments, the heating sheet in the vacuum cavity is provided with a plurality of through holes, each of the through holes is in communication with a corresponding suction hole.

[0011] In some embodiments, the winding needle mechanism further comprises an electrical integrated slip ring, the rotor of the electrical integrated slip ring is fixedly connected with the winding needle, the stator of the electrical integrated slip ring is provided with a first vacuum joint and a first conductive joint, the first vacuum joint is used for being in communication with an external negative pressure source through a gas conveying pipeline, and the first conductive joint is used for being in communication with an external power source through a conductive circuit.

[0012] The rotor of the electrical integrated slip ring is provided with a second vacuum joint in communication with the first vacuum joint and a second conductive joint in electrical connection with the first conductive joint, the second vacuum joint is in communication with the vacuum cavity through a vacuum pipe, and the second conductive joint is in electrical connection with each of the heating sheets 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 piece is arranged in the mounting hole.

[0015] In some embodiments, the rotating part is provided with two pushing parts, the two pushing parts are arranged along the rotation direction of the rotating part, and a gap is formed between the two pushing parts.

[0016] When the two pushing parts send the material belt to be conveyed into the accommodation recess, the gap is used for accommodating 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 is arranged on the fixed seat and can be controlled to approach or move away from the winding needle relative to the fixed seat, the first elastic member is abutted between the fixed seat and the mounting seat to provide a pre-tightening force for the mounting seat to have a movement tendency to approach the winding needle, and the rotating part is arranged on the mounting seat and can be controlled to rotate relative to the mounting seat.

[0018] In some embodiments, the roller pressing assembly comprises a first roller pressing assembly, the first roller pressing assembly is provided with a first pressing roller rotatable about its own axis, and the first roller pressing assembly can drive the first pressing roller to press the part of the material belt upstream of the cutter onto the suction area.

[0019] In some embodiments, the roll forming assembly further includes a second roll forming assembly having a second pressure roller rotatable about its own axis, the second roll forming assembly controllably driving the second pressure roller to press a portion of the strip downstream of the cutter against the outer peripheral surface.

[0020] In actual use, the aforementioned winding equipment conveys the strip downstream at a certain speed, passing through the first station. At the first station, the winding needle rotates around its own axis, and the roller pressing assembly presses the strip against the outer circumferential surface of the winding needle, causing the adsorption area of ​​the winding needle to adsorb and fix the strip. Simultaneously, the rotating part drives the pushing part to rotate. When the rotating part drives the pushing part to face the receiving recess, the pushing part pushes the passing strip into the receiving recess, causing the strip inside the receiving recess to be cut by the cutter. At this point, the upstream cut end of the strip, formed after being cut, is adsorbed and fixed on the outer circumferential surface of the winding needle by the adsorption area. The winding needle continues to rotate around its own axis, thereby winding the strip onto the outer circumferential surface of the winding needle to form a core. In other words, during the process of the roller pressing assembly pressing the strip against the outer circumferential surface of the needle and the pusher pushing the strip into the receiving recess of the needle, the needle always rotates around its own axis, the strip continues to be conveyed downstream, the rotating part keeps rotating to drive the pusher to rotate, and the pusher and the cutter work together to cut the strip.

[0021] Thus, while the material strip continues to be conveyed downstream, the rotation of the winding needle and the rotating part drives the pushing part and the receiving recess on the winding needle to face each other. At this time, the pushing part pushes the material strip that is passing by into the receiving recess on the winding needle, so that the cutter in the receiving recess cuts the material strip, thereby realizing the flying cut of the material strip. The upstream cut end of the material strip after being cut is attracted and fixed by the adsorption area on the winding needle, so that material strip A is wound onto the outer circumference of the winding needle to form a 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 conveying or the winding needle rotation. On the one hand, it saves the waiting time for starting and stopping the equipment, which greatly improves the production efficiency; on the other hand, it eliminates the need for needle threading and film winding, which greatly simplifies the structure of the winding equipment. Attached Figure Description

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

[0023] Figure 2 for Figure 1 A schematic diagram of the pressing mechanism and the winding needle mechanism of the winding equipment shown;

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

[0025] Figure 4 for Figure 1 a side view of a winding needle mechanism of the winding apparatus shown in FIG. 1;

[0026] Figure 5 for Figure 2 a structural schematic view of a rotating part and a pushing part of the material pressing mechanism shown in FIG. 1;

[0027] Figure 6 for Figure 1 a structural schematic view of the material pressing mechanism of the winding apparatus shown in FIG. 1. DETAILED DESCRIPTION

[0028] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific details disclosed herein. Thus, the present application is not intended to be limited to the following specific embodiments.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0030] In addition, the terms "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0031] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and "fixedly" should be construed as broad terms, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a mediating element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a mediating element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0034] Please refer to Figures 1 to 3 The present application provides a winding device, comprising a winding needle mechanism 10 and a pressing mechanism 20. The winding needle mechanism 10 comprises a winding needle 11 and a cutter 12, the winding needle 11 has an outer circumferential surface 110 (see Figure 3 ) and a receiving recess 111 (see Figure 3). The winding needle 11 is controllably rotatable to wind the tape A onto the outer circumferential surface 110 of the winding needle 11. The cutter 12 is disposed in the receiving recess 111 of the winding needle 11 so as to rotate synchronously with the winding needle 11. The outer circumferential surface 110 of the winding needle 11 has an adsorption region 1101 located on the upstream side of the receiving recess 111 and configured to controllably adsorb and fix the passing tape A. The pressing mechanism 20 includes a roller pressing assembly 21 and a pushing assembly 22. The roller pressing assembly 21 is used to press the tape A against 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 disposed on the rotating part 221. The rotating part 221 is controllably rotatable 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 part 222 is used to send the tape A into the receiving recess 111 so that the cutter 12 cuts the tape A entering the receiving recess 111.

[0035] In actual use, the tape A is conveyed downstream at a certain speed and passes through the first station a1. At the first station a1, the winding needle 11 keeps rotating around its own axis, the roller pressing assembly 21 presses the tape A against the outer circumferential surface 110 of the winding needle 11, so that the adsorption region 1101 of the winding needle 11 adsorbs and fixes the tape A. At the same time, the rotating part 221 drives the pushing part 222 to rotate, and when the rotating part 221 drives the pushing part 222 to be opposite to the receiving recess 111, the pushing part 222 pushes the passing tape A into the receiving recess 111, so that the tape A entering the receiving recess 111 is cut by the cutter 12. At this time, the upstream cut end of the tape A formed after being cut is adsorbed and fixed on the outer circumferential surface 110 of the winding needle 11 by the adsorption region 1101, and the winding needle 11 keeps rotating around its own axis, thereby winding the tape A onto the outer circumferential surface 110 of the winding needle 11 to form the winding core 100. That is, in the process of pressing the tape A against the outer circumferential surface 110 of the winding needle 11 by the roller pressing assembly 21 and pushing the passing tape A into the receiving recess 111 of the winding needle 11 by the pushing part 222, the winding needle 11 always keeps rotating around its own axis, the tape A keeps conveying downstream, the rotating part 221 keeps rotating to drive the pushing part 222 to rotate, and the passing tape A is fly-cut by the cooperation of the pushing part 222 and the cutter 12.

[0036] Thus, under the condition that the material belt A is not stopped from conveying downstream, the pusher 222 and the accommodation recess 111 on the winding needle 11 are driven to be opposite to each other by the rotation of the winding needle 11 and the rotating part 221, at this time, the pusher 222 pushes the material belt A passing through to the accommodation recess 111 on the winding needle 11, so that the cutter 12 in the accommodation recess 111 cuts the material belt A, that is, the fly cutting of the material belt A is realized. The upstream cut end formed after the material belt A is cut is adsorbed and fixed by the adsorption area 1101 on the winding needle 11, so that the material belt A is wound on the outer circumferential surface 110 of the winding needle 11 to form a winding core 100. In this process, the material belt A also keeps conveying downstream, and the winding needle 11 keeps rotating, without stopping the conveying of the material belt A and the rotation of the winding needle 11, on the one hand, the waiting time of starting and stopping of the equipment is saved, and the production efficiency is greatly improved; on the other hand, the actions of needle threading and film merging are cancelled, and the structure of the winding equipment is greatly simplified.

[0037] It should be noted that in the prior art, the cutter is arranged outside the winding needle, in order to realize fly cutting of the material belt A, the cutter needs to be driven to rotate by the rotating shaft, on the one hand, this will make the structure of the winding equipment more complex, on the other hand, if the rotating speed of the cutter does not match that of the winding needle, the cutter will directly contact the winding needle and damage the winding needle, therefore, the rotating speeds of the cutter and the winding needle need to be accurately controlled, which has high precision requirement and is difficult to control.

[0038] In the present application, the cutter 12 is arranged in the accommodation recess 111 on the winding needle 11, which can ensure that the cutter 12 rotates with the winding needle 11, on the one hand, the mounting structure of the cutter 12 is simple, and the driving mechanism for driving the cutter 12 to rotate and move is omitted, which is beneficial to further simplify the structure of the winding equipment; on the other hand, the cutter 12 always rotates with the winding needle 11, which avoids the phenomenon that the cutter 12 damages the winding needle 11 due to the mismatch of the rotating speeds of the cutter 12 and the winding needle 11.

[0039] It can be understood that after the cutter 12 cuts the material belt A passing through, the material belt A forms an upstream cut end located upstream and a downstream cut end located downstream. The downstream cut end is separated from the upstream cut end with the conveying of the downstream material belt A downstream. Under the adsorption of the adsorption area 1101 on the winding needle 11, the upstream cut end is adsorbed and fixed on the outer circumferential surface 110 of the winding needle 11, so that the winding needle 11 can wind the material belt A. The upstream and downstream in the present application are relative to the conveying direction of the material belt A, that is, in the process of conveying the material belt A downstream, the position reached first is the upstream, and the position reached later is the downstream.

[0040] In the embodiment, the outer circumferential surface 110 of the winding needle 11 is inwardly recessed to form a recess, which is the above-mentioned accommodation recess 111. The depth of the accommodation recess 111 is greater than the dimension of the cutter 12 in the depth direction of the accommodation recess 111, so as to avoid the cutter 12 from extending out of the accommodation recess 111 to contact other components and cause damage.

[0041] In the embodiment, the inside of the winding needle 11 has a vacuum cavity B for communicating with an external negative pressure source. The suction area 1101 on the outer circumferential surface 110 of the winding needle 11 is provided with a plurality of suction holes 1102 communicating with the vacuum cavity B. In this way, the external negative pressure source performs vacuumization on the vacuum cavity B, so as to generate negative pressure at each suction hole 1102, and then the negative pressure at each suction hole 1102 is used to adsorb and fix the passing material belt A on the suction area 1101 on the outer circumferential surface 110. When it is needed to release the adsorption of the material belt A, the external negative pressure source stops vacuumizing the vacuum cavity B, so that the vacuum in the vacuum cavity B is broken, and the negative pressure at each suction hole 1102 disappears, thereby releasing the adsorption and fixation of the material belt A.

[0042] It should be noted that, compared with the prior art scheme of fixing the upstream cut end of the material belt A on the winding needle 11 by means of a clamping mechanism arranged inside the winding needle 11, the scheme of the present application uses vacuum adsorption to fix the upstream cut end of the material belt A on the outer circumferential surface 110 of the winding needle 11, which greatly simplifies the structure of the winding needle 11, responds quickly and accurately to the adsorption of the upstream cut end of the material belt A.

[0043] In the embodiment, the inside of the winding needle 11 is further provided with a plurality of cavities C, and each cavity C and the above-mentioned vacuum cavity B are arranged at intervals along the circumference of the winding needle 11. Each cavity C and the vacuum cavity B are respectively provided with a heating sheet 115 close to the inner wall of the outer circumferential surface 110, so as to heat the outer circumferential surface 110 of the winding needle 11 by means of each heating sheet 115, and then heat the winding core 100 wound on the outer circumferential surface 110 of the winding needle 11, so as to make each layer of the material belt A of the winding core 100 more softened and improve the adhesion, so as to improve the adhesion between each layer of the material belt A of the winding core 100, and reduce the risk of air gap in the winding core 100 when the winding core 100 is subsequently heat-pressed or cold-pressed.

[0044] Further, the heating sheet 115 located in the vacuum cavity B is provided with a plurality of through holes 1151, and each through hole 1151 communicates with a corresponding suction hole 1102, so that each suction hole 1102 communicates with the vacuum cavity B through the corresponding through hole 1151, thereby avoiding the heating sheet 115 from blocking each suction hole 1102 and causing the material belt A to be unable to be adsorbed.

[0045] Please refer to Figure 3 and Figure 4In particular to the embodiment, the needle roller mechanism 10 further comprises an electrical integrated slip ring 13, a rotor 132 of the electrical integrated slip ring 13 is fixedly connected with the needle roller 11, so that the rotor 132 of the electrical integrated slip ring 13 can rotate synchronously with the needle roller 11. The stator 131 of the electrical integrated slip ring 13 is provided with a first vacuum joint b1 and a first conductive joint c1, the first vacuum joint b1 is used for communicating with an external negative pressure source through a gas conveying pipeline, and the first conductive joint c1 is used for communicating with an external power source through a conductive circuit. The rotor 132 of the electrical integrated slip ring 13 is provided with a second vacuum joint b2 in communication with the first vacuum joint b1 and a second conductive joint c2 in electrical connection with the first conductive joint c1. The second vacuum joint b2 is in communication with the vacuum cavity B through a vacuum pipe, and the second conductive joint c2 is in electrical connection with each heating sheet 115 through a wire. In this way, the external negative pressure source is in communication with the vacuum cavity B through the first vacuum joint 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 joint b2 in sequence, so that the external negative pressure source can vacuumize the vacuum cavity B. The external power source is in electrical connection with each heating sheet 115 through the first conductive joint 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 joint c2 in sequence, so that the external power source can provide electrical energy to each heating sheet 115.

[0046] In the embodiment of the present application, the needle roller 11 comprises a needle roller shaft 112 and a first outer needle 113 and a second outer needle 114 arranged on the needle roller shaft 112. The first outer needle 113 and the second outer needle 114 are arranged opposite to each other, and the outer side walls facing away from each other jointly form the above-mentioned outer peripheral surface 110. The recess is formed on the outer side wall of the first outer needle 113 facing away from the second outer needle 114, which serves as the above-mentioned accommodation recess 111. In this way, the accommodation recess 111 for accommodating the cutter 12 is formed by slotting the outer side wall of the first outer needle 113 facing away from the second outer needle 114, greatly simplifying the structure of the needle roller 11.

[0047] Further, each adsorption hole 1102 is formed 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 accommodation recess 111. The above-mentioned vacuum cavity B is located inside the first outer needle 113, so as to communicate with each adsorption hole 1102. The inside of the first outer needle 113 and the second outer needle 114 is provided with one or more cavities C, so as to arrange heating sheets 115 in each cavity C, and then heat the outer side walls (i.e. the above-mentioned outer peripheral surface 110) of the first outer needle 113 and the second outer needle 114 facing away from each other by using each heating sheet 115.

[0048] Optionally, the first outer needle 113 and the second outer needle 114 are configured to be controllably close to or away from each other relative to the needle shaft 112, so as to adjust the radial dimension of the outer circumferential surface 110 of the needle 11. Further, a gap D is formed between the first outer needle 113 and the second outer needle 114, which is used for the insertion of the clamp needle to clamp the core 100 wound on the outer circumferential surface 110. Thus, when winding is needed, the first outer needle 113 and the second outer needle 114 are controlled to be away from each other, so as to increase the radial dimension of the outer circumferential surface 110; when the core 100 is wound and needs to be unloaded, the clamp needle is inserted into the gap D between the first outer needle 113 and the second outer needle 114 and clamps the core 100; then the first outer needle 113 and the second outer needle 114 are controlled to be close to each other, so as to reduce the radial dimension of the outer circumferential surface 110, so that the first outer needle 113 and the second outer needle 114 are in a relaxed state with the core 100; and then the needle 11 is controlled to move axially to be extracted from the core 100, so as to realize 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 needle shaft 112 can adopt a relatively mature prior art, as long as the first outer needle 113 and the second outer needle 114 can be close to or away from each other relative to the needle shaft 112, which is not particularly limited here.

[0050] It should be further noted that the above-mentioned accommodation recess 111 is not limited to being provided on the first outer needle 113, and in other embodiments, the accommodation recess 111 can also be provided on the second outer needle 114, and of course in some other embodiments, the accommodation recess 111 can be provided on both the first outer needle 113 and the second outer needle 114, which is not particularly limited here.

[0051] Specifically, the cutter 12 can adopt a hot cutter 12, which can cut the passing material belt A on one hand, and on the other hand, the material belt A passing through the hot cutter 12 is two layers. After the two layers of material belt A are cut by the hot cutter 12, the upstream cut end of the two layers of material belt A is bonded together due to heating, so that the upstream cut end of the two layers of material belt A can be better adsorbed and fixed by the adsorption area 1101, avoiding the phenomenon that only one layer of material belt A is adsorbed and fixed and the other layer of material belt 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 arranged in the mounting hole, so as to heat the cutter 12 by the heating element 121, and then the cutter 12 can heat cut the passing material belt A.

[0053] Further, the cutter 12 extends along the axial length direction of the winding needle 11, and the length dimension of the cutter 12 is greater than the width dimension of the material belt A, so as to ensure that the cutter 12 can cut the passing material belt A along the width direction of the material belt A. The mounting hole on the cutter 12 extends along the length direction of the cutter 12, and the heating element 121 is a heating rod in a strip shape, which is inserted into the mounting hole, so that the heating rod can uniformly heat each position of the cutter 12 in the length direction, avoiding the phenomenon of local high or low temperature of the cutter 12.

[0054] Optionally, the cutter 12 includes a cutter seat 123 and a cutter blade 125 fixedly connected to the cutter seat 123. The cutter seat 123 is fixedly connected in the accommodation recess 111, and the cutter blade 125 is located on the side of the cutter seat 123 facing the opening of the accommodation recess 111. The mounting hole is formed in 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 transmitted to the cutter blade 125 through the cutter seat 123, so that the cutter blade 125 can heat cut the material belt A entering the accommodation recess 111. It should be noted that the heating element 121 can also be electrically connected to the external power supply through the above-mentioned electrically 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 electrically integrated slip ring 13, the rotor 132 of the electrically integrated slip ring 13 and the second conductive connector c2, so as to realize that the external power supply provides electric energy to the heating element 121.

[0055] Please see Figure 5 In the embodiment of the present application, the rotating part 221 is provided with two material pushing parts 222, which are arranged at intervals along the rotating direction of the rotating part 221, so as to form a gap B between the two material pushing parts 222. When the two material pushing parts 222 send the passing material belt A into the accommodation recess 111, the gap B between the two material pushing parts 222 is used to accommodate the cutter 12, so as to realize the avoidance of the cutter 12, and avoid the collision between the cutter 12 and the material pushing part 222.

[0056] Please see Figure 1 and Figure 6 As shown in the figures, in the embodiment, the material pushing assembly 22 further includes a fixed seat 223, a mounting seat 224 and a first elastic member 225. The mounting seat 224 is arranged on the fixed seat 223 and can be controlled to approach or move away from the winding needle 11 located at the first station a1 relative to the fixed seat 223. The first elastic member 225 is abutted between the fixed seat 223 and the mounting seat 224, so as to provide a pre-tightening force for the mounting seat 224 to have a movement tendency to approach the winding needle 11 located at the first station a1. The rotating part 221 is arranged on the mounting seat 224 and can be controlled to rotate relative to the mounting seat 224.

[0057] Therefore, in actual use, the rotating part 221 is controlled to rotate relative to the mounting seat 224, thereby driving the pushing part 222 to rotate. At the same time, the mounting seat 224 is controlled to move close to 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 move close to the winding needle 11 located at the first station a1. Under the combined action of the rotating part 221 driving the pushing part 222 to rotate and the winding needle 11 located at the first station a1 rotating around its own axis, the pushing part 222 and the accommodation recess 111 on the winding needle 11 are opposite to each other, and then the pushing part 222 driven by the mounting seat 224 pushes the material belt A passing through into the accommodation recess 111, so that the cutter 12 in the accommodation recess 111 cuts the material belt A, that is, fly cutting of the material belt A is realized. After the material belt A is cut, the mounting seat 224 is controlled to move away from the winding needle 11 located at the first station a1 relative to the fixing seat 223, 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 the device operation is abnormal, the rotating speed of the rotating part 221 and the winding needle 11 located at the first station a1 do not match, and the pushing part 222 directly abuts against the outer circumferential surface 110 of the winding needle 11. Due to the existence of the first elastic member 225, the first elastic member 225 can buffer the impact force between the pushing part 222 and the outer circumferential surface 110 of the winding needle 11 through its own deformation, thereby avoiding hard impact of the pushing part 222 on the winding needle 11 and damaging the winding needle 11. Alternatively, the first elastic member 225 can be a spring.

[0059] It should be noted that the mounting seat 224 can be installed on the fixing seat 223 through a guide structure such as a guide rail or a guide rod, thereby guiding the movement of the mounting seat 224 relative to the fixing seat 223, and ensuring that the movement of the rotating part 221 and the pushing part 222 on the rotating part 221 close to or away from the winding needle 11 located at the first station a1 is more stable and reliable. The guide structure can adopt a relatively mature prior art as long as it can play a guiding role, which is not limited here.

[0060] Further, the pushing assembly 22 further comprises a first driving member 227 which is drivingly connected with the mounting seat 224, so that the first driving member 227 can drive the mounting seat 224 to move close to or away from the winding needle 11 located at the first station a1 relative to the fixing seat 223. It should be noted that the first driving member 227 can be a linear driving module, as long as it can provide power for the movement of the mounting seat 224 relative to the fixing seat 223, which is not limited here.

[0061] Further, the pushing assembly 22 further comprises a second driving member 226, which is mounted on the mounting base 224 and drivingly connected with the rotating part 221, so that the second driving member 226 can drive the rotating part 221 to rotate relative to the mounting base 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 part 221, which is not limited here.

[0062] It should be noted that in some embodiments, the rotating part 221 can be a rotating roller which is mounted on the mounting base 224 by a bearing, so that the rotating roller can rotate about its own axis relative to the mounting base 224. The pushing part 222 can be a protrusion protruding from the roller surface of the rotating roller. Since the pushing part 222 protrudes from the roller surface of the rotating roller, when the rotating roller approaches the winding needle 11, the pushing part 222 can push the passing tape A into the receiving recess 111 on the winding needle 11.

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

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

[0065] It can be understood that, since the first pressure roller 211a of the first roller pressing assembly 21a and the second pressure roller 211b of the second roller pressing assembly 21b are both rotatable about their own axes, when the first pressure roller 211a and the second pressure roller 211b press the passing tape A against the winding needle 11 at the first station a1 respectively, the tape A can pass between the first pressure roller 211a and the winding needle 11 at the first station a1 and between the second pressure roller 211b and the winding needle 11 at the first station a1 and be conveyed downstream under the downstream traction. That is, in the process of cutting the passing tape A by the cutter 12, the winding needle 11 rotates about its own axis and drives the cutter 12 to rotate, the rotating part 221 drives the pushing part 222 to rotate, the tape A between the pushing part 222 and the winding needle 11 is also conveyed downstream, and the rotating speed of the rotating part 221, the rotating speed of the winding needle 11 and the conveying speed of the tape A downstream match each other, ensuring that the speeds of the pushing part 222, the tape A and the cutter 12 are consistent at the moment when the pushing part 222 sends the tape A into the accommodation recess 111 and the tape A is cut by the cutter 12, so that the pushing part 222 can accurately send the tape A into the accommodation recess 111, and the cutter 12 can accurately and quickly fly-cut the tape A.

[0066] It should be noted that, in some embodiments, the first roller pressing assembly 21a is mounted on the mounting seat 224, so that when the first driving member 227 drives the mounting seat 224 to approach or move away from the winding needle 11 at the first station a1, the mounting seat 224 can drive the pushing assembly 22 and the first roller pressing assembly 21a to approach or move away from the winding needle 11 at the first station a1 together. That is, the first roller pressing assembly 21a and the pushing assembly 22 share the same driving member, and it is not necessary to additionally configure a driving member for the first roller pressing assembly 21a, which greatly simplifies the structure of the equipment, reduces the space required, and reduces the difficulty of spatial layout of the components of the pressing mechanism 20.

[0067] Specifically, in an embodiment, the first roller pressing 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 seat 224 through a first guide rod, and the first pressure roller 211a is rotatably connected to the first mounting frame 212a. The second elastic member 213a is abutted between the mounting seat 224 and the first mounting frame 212a to provide an elastic force for the first mounting frame 212a to have a movement trend of approaching the winding needle 11 at the first station a1 relative to the mounting seat 224. In this way, during the process that the first driving member 227 drives the mounting seat 224 to approach the winding needle 11 at the first station a1, the first pressure roller 211a first presses the passing tape A against the adsorption area 1101 of the winding needle 11 at the first station a1, and then the mounting seat 224 drives the pushing part 222 to push the passing tape A into the accommodation recess 111 as the mounting seat 224 continues to approach the winding needle 11. Optionally, the second elastic member 213a can be a compression spring.

[0068] In actual use, when the first driving member 227 drives the mounting base 224 to approach the reel needle 11 at the first station a1, the first roller pressing assembly 21a and the rotating part 221 approach the reel needle 11 at the first station a1 together, the first pressing roller 211a of the first roller pressing assembly 21a first presses the passing tape A against the reel needle 11 at the first station a1, and the pushing member 222 on the rotating part 221 pushes the passing tape A into the accommodation recess 111 of the reel needle 11 to be cut off by the cutter 12. Then, the first driving member 227 drives the mounting base 224 to move away from the reel needle 11 at the first station a1, and the pushing member 222 is first withdrawn from the accommodation recess 111 of the reel needle 11 under the driving of the mounting base 224, and then the first pressing roller 211a of the first roller pressing assembly 21a is separated from the reel needle 11 at the first station a1, that is, the first pressing roller 211a stops pressing the passing tape A (at this time, the upstream cut end of the tape A is adsorbed and fixed on the adsorption area 1101 of the reel needle 11). At the same time, the reel needle 11 at the first station a1 continues to rotate, so as to wind the tape A on the outer circumferential surface 110 of the reel needle 11.

[0069] Of course, in other embodiments, the first roller pressing assembly 21a can also not be arranged on the mounting base 224, and a driving member can be arranged to separately drive the first roller pressing assembly 21a to approach or move away from the reel needle 11 at the first station a1, which is not limited here.

[0070] It should be noted that in some embodiments, the second roller pressing assembly 21b is also mounted on the mounting base 224, so that when the first driving member 227 drives the mounting base 224 to approach or move away from the reel needle 11 at the first station a1, the mounting base 224 can drive the pushing assembly 22 and the second roller pressing assembly 21b to approach or move away from the reel needle 11 at the first station a1 together. That is, the second roller pressing assembly 21b and the pushing assembly 22 share the same driving member, and an additional driving member does not need to be configured for the second roller pressing assembly 21b, which greatly simplifies the structure of the equipment, reduces the space required, and reduces the difficulty of spatial layout of the components of the pressing mechanism 20.

[0071] In the embodiment, the second roller pressing assembly 21b comprises a second mounting frame 212b and a third elastic member 213b. The second mounting frame 212b is movably connected to the mounting base 224 through a second guide rod, and the second pressing roller 211b is rotatably connected to the second mounting frame 212b. The third elastic member 213b is abutted between the mounting base 224 and the second mounting frame 212b to provide an elastic force for the second mounting frame 212b to have a moving tendency to approach the needle 11 at the first station a1 relative to the mounting base 224. In this way, during the process that the first driving member 227 drives the mounting base 224 to approach the needle 11 at the first station a1, the second pressing roller 211b first presses the passing tape A against the outer circumferential surface 110 of the needle 11 at the first station a1, and then the mounting base 224 drives the pushing part 222 to push the passing tape A into the accommodation recess 111 of the needle 11, so that the tape A is cut by the cutter 12 in the accommodation recess 111. Optionally, the third elastic member 213b can be a compression spring.

[0072] In actual use, when the first driving member 227 drives the mounting base 224 to approach the needle 11 at the first station a1, the second roller pressing assembly 21b and the pushing part 222 together approach the needle 11 at the first station a1, the second pressing roller 211b of the second roller pressing assembly 21b first presses the passing tape A against the outer circumferential surface 110 of the needle 11 at the first station a1, and then the mounting base 224 drives the pushing part 222 to push the passing tape A into the accommodation recess 111 of the needle 11, so that the tape A is cut by the cutter 12 in the accommodation recess 111. After the tape A is cut, the first driving member 227 drives the mounting base 224 to move away from the needle 11 at the first station a1, and under the drive of the mounting base 224, the pushing part 222 first exits the accommodation recess 111, and then the second pressing roller 211b of the second roller pressing assembly 21b separates from the needle 11 at the first station a1, that is, the second pressing roller 211b releases the pressing on the passing tape A.

[0073] Of course, in other embodiments, the second roller pressing assembly 21b can not be arranged on the mounting base 224, and a driving member can be arranged to drive the second roller pressing assembly 21b to approach or move away from the needle 11 at the first station a1, which is not limited herein.

[0074] Please continue to see Figure 1As shown, in the embodiment of the present application, the winding device further comprises a turret 30, and the number of the winding needle mechanisms 10 is at least two. The turret 30 is rotatably arranged, and the winding needle 11 of each winding needle mechanism 10 is rotatably connected to the turret 30 through the winding needle shaft 112. The winding needle 11 of each winding needle mechanism 10 sequentially passes through the first station a1 and the second station a2 in the process of rotating with the turret 30. When the winding needle 11 located at the first station a1 rotates with the turret 30 to the second station a2, the other winding needle 11 rotates with the turret 30 to the first station a1.

[0075] Thus, when the winding of the winding core 100 on the winding needle 11 located at the first station a1 is completed, first, the material belt A continues to be conveyed downstream, the turret 30 drives the winding needle 11 located at the first station a1 to rotate to the second station a2, and the other winding needle 11 rotates with the turret 30 to the first station a1. At this time, the winding needle 11 located at the first station a1 rotates around its own axis, and the first roller pressing assembly 21a drives the first compression roller 211a to compress the part of the material belt A located upstream of the cutter 12 on the adsorption area 1101 of the winding needle 11 located at the first station a1, and the second roller pressing assembly 21b drives the second compression roller 211b to compress the part of the material belt A located downstream of the cutter 12 on the outer peripheral surface 110 of the winding needle 11 located at the first station a1. The rotating part 221 moves close to the winding needle 11 located at the first station a1, and the rotating part 221 drives the pushing material part 222 thereon to rotate. The winding needle 11 located at the first station a1 rotates, so that when the pushing material part 222 on the rotating part 221 and the accommodation recess 111 on the winding needle 11 are opposite to each other, the pushing material part 222 pushes the material belt A passing through the accommodation recess 111, and further makes the cutter 12 in the accommodation recess 111 cut the material belt A. At this time, the upstream cut end of the material belt A is adsorbed and fixed on the adsorption area 1101 of the winding needle 11 located at the first station a1.

[0076] After the material belt A is cut by the cutter 12, the rotating part 221 gradually moves away from the winding needle 11 located at the first station a1 under the driving action of the first driving member 227, so that the pushing material part 222 on the rotating part 221 exits the accommodation recess 111 on the winding needle 11. Then, the first roller pressing assembly 21a drives the first compression roller 211a to move away from the winding needle 11 located at the first station a1. Then, after the winding needle 11 located at the first station a1 winds the material belt A on the outer peripheral surface 110 thereof by at least one turn, the second roller pressing assembly 21b drives the second compression roller 211b thereof to move away from the winding needle 11 located at the first station a1. In this process, the winding needle 11 located at the first station a1 continuously rotates to wind the material belt A on the outer peripheral surface 110 thereof to form the winding core 100.

[0077] After the material tape A is cut by the cutter 12, the winding needle 11 at the second station a2 continues to wind until the cut material tape A is completely wound on the outer circumferential surface 110 of the winding core 100, and then the winding core 100 on the winding needle 11 at the second station a2 is pasted with an end tape and / or cut off.

[0078] It should be noted that in other embodiments, the winding needle 11 of each winding needle mechanism 10 can also pass through the third station a3 during rotation of the turret 30. That is, the winding needle 11 of each winding needle mechanism 10 sequentially passes through the first station a1, the second station a2 and the third station a3 during rotation of the turret 30. The winding needle 11 at the first station a1 winds the material tape A conveyed upstream to form the winding core 100. The winding needle 11 at the second station a2 pastes the winding core 100 on the winding needle 11 with an end tape, thereby preventing the winding core 100 on the winding needle 11 from loosening. The winding needle 11 at the third station a3 cuts off the winding core 100 on the winding needle 11. In the embodiment in which the winding needle 11 passes through the three stations (i.e., the first station a1, the second station a2 and the third station a3), the winding operation steps of the winding device are similar to those in the embodiment in which the winding needle 11 passes through the two stations (i.e., the first station a1 and the second station a2), and thus are not described 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 used as long as the winding core 100 can be formed, and are not limited here.

[0080] The technical features of the above-described embodiments can be combined in any manner. For brevity, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0081] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A reel pin mechanism characterized by, The application relates to a reel needle mechanism, comprising: a reel needle having an outer circumferential surface and a receiving recess formed in the outer circumferential surface, the reel needle being controllably rotatable to wind a material tape onto the outer circumferential surface; and a cutter arranged in the receiving recess to cut the material tape entering the receiving recess; wherein the outer circumferential surface has an adsorption area on an upstream side of the receiving recess, the adsorption area being configured to controllably adsorb the passing material tape.

2. The needle roller mechanism according to claim 1, characterized in that The reel needle has a vacuum cavity in the interior thereof, the vacuum cavity being used to communicate with an external negative pressure source, and the adsorption area is provided with a plurality of adsorption holes communicating with the vacuum cavity.

3. The spool pin mechanism of claim 2, wherein, The reel needle further has a plurality of cavities in the interior thereof, each of the cavities and the vacuum cavity being arranged at intervals along the circumferential direction of the reel needle, and each of the cavities and the vacuum cavity is provided with a heating sheet close to the inner wall of the outer circumferential surface.

4. The spool pin mechanism of claim 3, wherein, The heating sheet in the vacuum cavity is provided with a plurality of through holes, and each of the through holes communicates with a corresponding adsorption hole.

5. The needle roller mechanism according to claim 3, wherein The reel needle mechanism further comprises an electrical integrated slip ring, a rotor of the electrical integrated slip ring being fixedly connected with the reel needle, and a stator of the electrical integrated slip ring is provided with a first vacuum connector and a first conductive connector, the first vacuum connector being used to communicate with the external negative pressure source through a gas conveying pipeline, and the first conductive connector being used to communicate with an external power source through a conductive circuit; the rotor of the electrical integrated slip ring is provided with a second vacuum connector communicating with the first vacuum connector and a second conductive connector electrically connected with the first conductive connector, the second vacuum connector communicates with the vacuum cavity through a vacuum pipe, and the second conductive connector is electrically connected with each of the heating sheets through a wire.

6. The needle roller mechanism of claim 1, wherein The cutter is a hot cutter.

7. The spool pin mechanism of claim 6, wherein, The cutter comprises a cutter seat and a cutter blade fixedly connected with the cutter seat, the cutter seat is fixedly connected in the receiving recess, and the cutter blade is located on the side of the cutter seat facing the opening of the receiving recess; the cutter seat is provided with a mounting hole, and a heating piece is arranged in the mounting hole.

8. The needle roller mechanism of claim 1, wherein, The outer circumferential surface of the reel needle is recessed inward to form a groove, and the groove serves as the receiving recess; the depth dimension of the receiving recess is greater than the dimension of the cutter in the depth direction of the receiving recess.

9. The needle roller mechanism of claim 1, wherein, The reel needle comprises a first outer needle and a second outer needle arranged opposite to each other, and the outer side walls of the first outer needle and the second outer needle, which are away from each other, jointly form the outer circumferential surface; the outer side wall of the first outer needle, which is away from the second outer needle, is provided with a groove, and the groove serves as the receiving recess; and / or the outer side wall of the second outer needle, which is away from the first outer needle, is provided with a groove, and the groove serves as the receiving recess.

10. A winding apparatus characterized by comprising: The application further relates to a reel needle mechanism comprising the reel needle as claimed in any one of claims 1 to 9.

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