Winding needle assembly and diaphragm cutting device

Abstract

The utility model discloses a winding needle assembly and a diaphragm cutting device. The winding needle assembly comprises a winding needle and a cutter. A groove is formed in the winding needle in the axial direction. The cutter comprises a rotating part and a cutting part which are connected. And the rotating part is arranged at the bottom of the groove and is detachably connected with the winding needle. And one end of the cutting part is connected with the rotating part and the other end is positioned in the groove. And the rotating part can rotate in the groove, so that the cutting part can rotate. The cutter is arranged on the winding needle, so that the cutter and the winding needle cannot collide with each other, and the safety of a winding process is improved; through the detachable connection of the rotating part of the cutter and the winding needle, one cutter can adapt to different winding needles, and the adaptability of the cutter and the winding needles of different models can be improved due to the fact that the cutting part can rotate.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing technology, and in particular to a needle winding assembly and a diaphragm cutting device. Background Art

[0002] The winding process is a crucial step in battery production. During this process, the battery's electrodes are wound using a winding needle, and the separators are cut using a cutter. Ensuring safety during the winding process while improving the compatibility of the cutter and winding needle remains a technical challenge. Utility Model Content

[0003] In view of the above problems, the present application provides a winding needle assembly and a diaphragm cutting device, which can solve the technical problem of insufficient compatibility between the cutter and the winding needle while ensuring the safety of the winding process.

[0004] In order to solve the above technical problems, a technical solution adopted in this application is to provide a winding needle assembly, which includes: a winding needle, a groove arranged along the axial direction is formed on the winding needle; a cutter, the cutter includes a rotating part and a cutting part connected to each other, the rotating part is arranged at the bottom of the groove and is detachably connected to the winding needle, one end of the cutting part is connected to the rotating part, and the other end is located in the groove; wherein the rotating part can rotate in the groove so that the cutting part can rotate.

[0005] By arranging the cutter on the winding needle, it can be ensured that the cutter and the winding needle will not collide, thereby improving the safety of the winding process; through the detachable connection between the rotating part of the cutter and the winding needle, one cutter can be adapted to different winding needles, and the ability of the cutting part to rotate can improve the adaptability of the cutter to different models of winding needles.

[0006] In a possible embodiment, the groove includes a first groove and a second groove, the second groove is located at the bottom of the first groove, at least part of the rotating part is arranged in the second groove, one end of the cutting part is connected to the rotating part, and the other end is located in the first groove.

[0007] The arrangement of the first groove and the second groove can prevent the cutting portion of the cutter from extending outside the groove, thereby ensuring the safety of the cutter when not cutting.

[0008] In a possible implementation, adsorption holes are provided on the sidewalls of the first groove.

[0009] The provision of the adsorption holes enables the diaphragm to be fixed on the side wall of the first groove when the diaphragm needs to be cut, thereby facilitating cutting.

[0010] In a possible implementation, at least one row of adsorption holes is provided and arranged along the axial direction of the winding needle.

[0011] This arrangement can make the adsorption air have a more stable and good adsorption effect when adsorbing the diaphragm.

[0012] In a possible implementation, the adsorption holes are circular, elliptical, sector-shaped, or polygonal.

[0013] The shape of the adsorption hole can be set as needed and is applicable to many scenarios.

[0014] In a possible embodiment, the diameter, single-side dimension, or long-axis dimension of the adsorption hole is 1 mm to 10 mm.

[0015] This arrangement allows the adsorption holes to adsorb the diaphragm without damaging the diaphragm.

[0016] In a possible embodiment, the angle between the winding needle passing through the radial direction of the axis of the rotating part and the cutting portion of the cutter ranges from 0° to 45°.

[0017] The cutting portion with such a range of motion can accommodate more winding needles.

[0018] In a possible embodiment, the angle between the winding needle passing through the radial direction of the axis of the rotating part and the cutting portion of the cutter is in a range of 0° to 30°.

[0019] This range of motion can accommodate more winding needles while also providing better cutting capabilities.

[0020] In one possible embodiment, the winding needle includes a material discharge position, which includes a third groove and a fourth groove. The third groove and the fourth groove are arranged opposite to each other and are located on the same diameter of the winding needle. The angle between the diameter of the third groove and the fourth groove and the radius of the second groove is 20° to 160°.

[0021] This setting method can adjust the angle of the cutter according to the actual situation such as the size of the winding needle, so as to keep the diaphragm and the cutter in a vertical state at the moment of cutting.

[0022] In a possible implementation manner, the angle between the diameter of the third groove and the fourth groove and the radius of the second groove is 30° to 150°.

[0023] This arrangement can further maintain the diaphragm and the cutter in a vertical state at the moment of cutting.

[0024] In a possible embodiment, the winding needle includes a first winding needle, a second winding needle and a rotating part. The first winding needle and the second winding needle are semicircular structures. The first winding needle and the second winding needle are opposite to each other and are arranged at intervals. The first winding needle and the second winding needle are both connected to the rotating part. The gap between the first winding needle and the second winding needle is the material unloading position.

[0025] The winding needle of this structure is convenient for storage and installation.

[0026] In a possible embodiment, the circumference of the winding needle is 200 to 2000 mm.

[0027] The same cutter can be used to fit curling needles of various circumferences.

[0028] In a possible embodiment, the winding needle assembly further includes a heating element, which is disposed at the bottom of the second groove, and the rotating portion is in contact with the heating element.

[0029] The arrangement of the heating element enables the cutter to cut the diaphragm more quickly during cutting.

[0030] In a possible implementation manner, the heating range of the heating element is 0 degrees Celsius to 300 degrees Celsius.

[0031] This heating range can ensure that the cutter has sufficient temperature when cutting, and will not cause adverse effects on the diaphragm and other components on the winding needle due to high temperature when not cutting.

[0032] In a possible embodiment, connecting parts are provided on opposite sides of the winding needle, and the rotating part of the cutter is detachably connected to the connecting parts.

[0033] The rotating part of the cutter is connected via the connecting part, thereby realizing the detachable connection of the cutter.

[0034] In a possible implementation manner, the rotating portion and the connecting portion are detachably rotatably connected.

[0035] This arrangement allows the cutter to be rotated without the need for disassembly or adjustment, making it more convenient to use.

[0036] In order to solve the above technical problems, another technical solution adopted in the present application is to provide a diaphragm cutting device, which includes a needle winding assembly as described in any one of the above items.

[0037] By setting the cutter on the winding needle in the winding needle assembly, it can be ensured that the cutter and the winding needle will not collide, thereby improving the safety of the winding process; through the detachable connection between the rotating part of the cutter and the winding needle, one cutter can be adapted to different winding needles, and the ability of the cutting part to rotate can improve the adaptability of the cutter to different models of winding needles.

[0038] In a possible implementation, the diaphragm cutting device further includes a pressing roller, which is arranged corresponding to the groove to press the diaphragm into the groove.

[0039] The pressure roller and the winding needle can better cut the diaphragm.

[0040] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above content and other purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0042] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments of the present application;

[0043] Figure 2 A schematic structural diagram of a diaphragm cutting device according to one or more embodiments of the present application;

[0044] Figure 3 for Figure 2 A schematic side view of the structure of the diaphragm cutting device;

[0045] Figure 4 This is a schematic structural diagram of a winding needle assembly according to one or more embodiments of the present application;

[0046] Figure 5 for Figure 4 A magnified side view of some structures in FIG.

[0047] Figure 6 This is a front view structural diagram of a winding needle assembly according to one or more embodiments of the present application;

[0048] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of the E region;

[0049] Figure 8 A schematic side view of the winding needle assembly according to one or more embodiments of the present application;

[0050] Figure 9 A schematic side view of the structure of a winding needle assembly according to one or more other embodiments of the present application;

[0051] Figure 10 This is an enlarged front view of a portion of the structure of a winding needle assembly according to one or more embodiments of the present application;

[0052] Figure 11 A schematic diagram of the cutting state structure of the diaphragm cutting device according to one or more embodiments of the present application;

[0053] Figure 12 for Figure 11 A side structural schematic diagram of the diaphragm cutting device in FIG.

[0054] Among them, 1000, vehicle; 200, controller; 300, motor; 100, battery device; 1, diaphragm cutting device; 10, winding needle assembly; 11, winding needle; 110, groove; 111, first groove; 112, second groove; 113, adsorption hole; 115, first winding needle; 116, second winding needle; 117, third groove; 118, fourth groove; 119, connecting part; 12, cutter; 121, rotating part; 122, cutting part; 13, heating element; 20, diaphragm; 30, pressure roller. DETAILED DESCRIPTION

[0055] The following embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only used as examples and are not intended to limit the scope of protection of the present application.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0057] In the description of the embodiments of this application, technical terms such as "first" and "second" are used solely to distinguish between different objects and should not be understood to indicate or imply relative importance, or to implicitly indicate the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of this application, unless otherwise expressly specified, the term "plurality" refers to more than two (including two). Similarly, "multiple groups" refers to more than two (including two), and "multiple sheets" refers to more than two (including two).

[0058] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0059] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0060] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 cannot be understood as a limitation on the embodiments of the present application.

[0061] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0062] Currently, market developments indicate that batteries are increasingly being used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, drones, and manned aircraft, as well as in toys, military equipment, and aerospace. As battery applications continue to expand, market demand is also growing.

[0063] The battery production process requires a winding process. The winding needle is the core of the winding process, which winds the electrode and diaphragm. After the winding needle cuts the material and before rewinding, the diaphragm needs to be cut. At this time, if the cutter and the winding needle are placed opposite each other, they can easily collide, causing a safety accident. However, if the cutter is placed on the winding needle, due to the different sizes of the winding needles, a cutter must be installed on each winding needle to ensure the cutting angle. Therefore, while ensuring the safety of the winding process, the compatibility between the cutter and the winding needle is insufficient.

[0064] Based on the above considerations, in order to solve the technical problem of insufficient adaptability between the cutter and the winding needle in the prior art while ensuring the safety of the winding process, the present application proposes a winding needle assembly and a diaphragm cutting device, wherein the winding needle assembly includes a winding needle and a cutter, and a groove is formed on the winding needle. The cutter includes a rotating part and a cutting part that are connected. The rotating part is arranged at the bottom of the groove and is detachably connected to the winding needle. In this way, one cutter can be used for different winding needles. In order to ensure that the cutting angle of the cutter can be guaranteed on different winding needles, the rotating part is arranged to be able to rotate in the groove so that the cutting part can rotate. In this way, the adaptability of the cutter and the winding needle can be improved while ensuring the safety of the winding process.

[0065] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device according to an embodiment of the present application.

[0066] Please refer to Figure 1 , Figure 1 Schematic diagram of the structure of a vehicle according to one or more embodiments of the present application.

[0067] The vehicle 1000 may be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000. The battery device 100 may be provided at the bottom, head, or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000. For example, the battery device 100 may serve as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to power the motor 300, for example, to meet the power requirements for starting, navigating, and driving the vehicle 1000.

[0068] In some embodiments of the present application, the battery device 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0069] The above description is an application scenario of a battery produced using the needle winding assembly and diaphragm cutting device of the present application.

[0070] In order to ensure the safety of the winding process and improve the adaptability of the cutter and the winding needle, this application provides a winding needle assembly and a diaphragm cutting device. Please refer to Figures 2 to 5 , Figure 2 A schematic structural diagram of a diaphragm cutting device according to one or more embodiments of the present application; Figure 3 for Figure 2 A schematic side view of the structure of the diaphragm cutting device; Figure 4This is a schematic structural diagram of a winding needle assembly according to one or more embodiments of the present application; Figure 5 for Figure 4 An enlarged side view of a portion of the structure in FIG. The winding needle 11 is formed with an axially arranged groove 110. The cutter 12 includes a rotating portion 121 and a cutting portion 122, which are connected to each other. The rotating portion 121 is disposed at the bottom of the groove 110 and is detachably connected to the winding needle 11. One end of the cutting portion 122 is connected to the rotating portion 121, and the other end is located in the groove 110. The rotating portion 121 can rotate in the groove 110, thereby enabling the cutting portion 122 to rotate.

[0071] The winding needle 11 is a component used to wind components such as the diaphragm 20. The winding needle 11 is usually cylindrical, and the winding needles 11 used in production will be different for different types of batteries. The difference in the winding needle 11 is mainly reflected in the diameter size. The cutter 12 is a component used to cut the diaphragm 20 and the like. Before the winding needle 11 winds the pole piece, the diaphragm 20 needs to be wound first, and when the diaphragm 20 is wound, the diaphragm 20 needs to be cut to determine the starting position of the diaphragm 20. The cutter 12 is mainly used to cut the diaphragm 20, and the cut diaphragm 20 is wound by the winding needle 11. The groove 110 is arranged along the axial direction of the winding needle 11, so that the groove 110 is a straight groove 110, and the setting direction of the groove 110 is the same as the axial direction of the winding needle 11, thereby ensuring that the cut diaphragm 20 can be well wound by the winding needle 11. The shape and depth of the groove 110 can be set according to needs and are not limited here.

[0072] The rotating portion 121 is a component of the cutter 12 that is used to connect to the winding needle 11 and can rotate relative to the connection position. The rotating portion 121 can be cylindrical or of other shapes. One end of the cutting portion 122 is connected to the rotating portion 121, and the other end is used to cut the diaphragm 20. The cutting portion 122 is located in the groove 110, that is, the cutting portion 122 does not protrude from the groove 110. The radial cross-section of the winding needle 11 is a circle with a depression, and the groove 110 is a depression on this circle. The cutter 12 is located inside the circle, in the depression formed by the groove 110, but does not exceed the range of the circle where the outer edge of the winding needle 11 is located. In other words, the cutting portion 122 of the cutter 12 does not exceed the plane formed by the two opposite edges of the groove 110. The rotating portion 121 can be detachably connected to the winding needle 11 by screwing, snapping, plugging, etc. The rotation of the rotating portion 121 can be achieved by disassembly and reinstallation. For example, when the angle of the cutting part 122 needs to be adjusted, the rotating part 121 can be removed from the winding needle 11, and the rotating part 121 can be reinstalled on the winding needle 11 after adjusting the angle of the cutting part 122, thereby realizing the rotation of the rotating part 121 relative to the winding needle 11. Alternatively, when the rotating part 121 is connected to the winding needle 11, the cutting part 122 can be moved to rotate the cutting part 122, thereby rotating the rotating part 121 relative to the winding needle 11. At this time, the cutting part 122 can be moved manually or by mechanical parts such as a cylinder. The detachable connection between the rotating part 121 and the winding needle 11 allows the cutter 12 to be installed on different winding needles 11. When the cutter 12 is installed on winding needles 11 of different sizes, the angle of the cutting part 122 needs to be adjusted to better cut the diaphragm 20.

[0073] By arranging the cutter 12 on the winding needle 11, it can be ensured that the cutter 12 and the winding needle 11 will not collide, thereby improving the safety of the winding process; through the detachable connection between the rotating part 121 of the cutter 12 and the winding needle 11, it can be achieved that one cutter 12 can adapt to different winding needles 11, and the cutting part 122 can be rotated to improve the adaptability of the cutter 12 to different models of winding needles 11.

[0074] In a possible embodiment, the groove 110 includes a first groove 111 and a second groove 112, the second groove 112 is located at the bottom of the first groove 111, at least a portion of the rotating portion 121 is disposed in the second groove 112, and one end of the cutting portion 122 is connected to the rotating portion 121, and the other end is located in the first groove 111.

[0075] The first groove 111 is a groove 110 formed on the winding needle 11, and the second groove 112 is a groove 110 further formed at the bottom of the first groove 111. The size of the first groove 111 usually needs to be larger than the size of the second groove 112. Both the first groove 111 and the second groove 112 extend along the axial direction of the winding needle 11. The first groove 111 and the second groove 112 can pass through the winding needle 11. The first groove 111 is provided to provide space for cutting the diaphragm 20, and the second groove 112 is provided to accommodate the rotating part 121 of the cutter 12. The rotating part 121 can be located entirely in the second groove 112, or partially in the second groove 112 and partially in the first groove 111. The cutting part 122 can also be located partially in the second groove 112. As long as the end away from the rotating part 121 is located in the first groove 111, the diaphragm 20 can be cut. The second groove 112 may be a rectangular groove 110, and its sidewall may limit the cutting portion 122, thereby limiting the rotation angle of the cutting portion 122. Alternatively, the second groove 112 may be a circular groove 110, a trapezoidal groove 110, or the like.

[0076] The arrangement of the first groove 111 and the second groove 112 can prevent the cutting portion 122 of the cutter 12 from extending outside the groove 110 , thereby ensuring the safety of the cutter 12 when not cutting.

[0077] Please refer to Figure 6 and Figure 7 , Figure 6 This is a front view structural diagram of a winding needle assembly according to one or more embodiments of the present application; Figure 7 for Figure 6 In a possible embodiment, adsorption holes 113 are provided on the sidewalls of the first groove 111 .

[0078] The suction holes 113 are typically connected to a vacuum device or air pump, which removes air to generate a suction force at the suction holes 113. This allows the diaphragm 20 to be attracted when it approaches the suction holes 113, preventing it from moving during cutting. The suction holes 113 can be provided only on the sidewall of one side of the first groove 111.

[0079] The provision of the adsorption holes 113 enables the diaphragm 20 to be fixed on the side wall of the first groove 111 when the diaphragm 20 needs to be cut, thereby facilitating cutting.

[0080] In a possible embodiment, at least one row of adsorption holes 113 is provided and arranged along the axial direction of the winding needle 11 .

[0081] The adsorption holes 113 may be arranged in one row, two rows, or more rows, depending on the size of the winding needle 11 and the adsorption holes 113. The adsorption holes 113 may be arranged regularly, such as in a straight line or an array, or irregularly, such as in a curved line or a pattern.

[0082] This arrangement can enable the adsorption air to have a more stable and good adsorption effect when adsorbing the diaphragm 20 .

[0083] In a possible embodiment, the adsorption hole 113 is circular, elliptical, fan-shaped, triangular, polygonal or irregular in shape.

[0084] Common shapes include circles, ellipses, sectors, and triangles, and polygons include quadrilaterals, pentagons, hexagons, octagons, etc. Irregular shapes include stars, clouds, and figures formed by irregular curves.

[0085] The shape of the adsorption hole 113 can be set as needed and is applicable to many scenarios.

[0086] In a possible embodiment, the diameter, single-side dimension, or long-axis dimension of the adsorption hole 113 is 1 mm to 10 mm.

[0087] When the adsorption hole 113 is circular, the size of its diameter is 1mm to 10mm. When the adsorption hole 113 is elliptical, the size of its major axis is 1mm to 10mm. When the adsorption hole 113 is polygonal, the size of its single side is 1mm to 10mm. The diameter, single side size or major axis size of the adsorption hole 113 can be any one of 1mm, 1.25mm, 1.5mm, 1.75mm, 2mm, 2.1mm, 2.5mm, 2.7mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, or any data between any two of the above numerical ranges. For example, the diameter, single side size or major axis size of the adsorption hole 113 can be 2mm to 8.5mm. When the adsorption hole 113 is too small, it cannot provide sufficient suction. When the adsorption hole 113 is too large, the diaphragm 20 may be damaged due to excessive suction force.

[0088] This arrangement allows the adsorption holes 113 to adsorb the diaphragm 20 without damaging the diaphragm 20 .

[0089] In a possible embodiment, the angle α between the winding needle 11 and the cutting portion 122 of the cutter 12 in the radial direction of the axis of the rotating portion 121 ranges from 0° to 45°.

[0090] The radial direction of the winding needle 11 passing through the axis of the rotating portion 121 can be considered as A-A', and the cutting portion 122 of the cutter 12 can be considered as BB'. The angle α between A-A' and BB' ranges from 0° to 45°. Because the angle can be located on both sides of the radial direction of the winding needle 11 passing through the axis of the rotating portion 121, the actual movable angle of the cutting portion 122 of the cutter 12 is 90°. The angle α between the winding needle 11 and the cutting portion 122 of the cutter 12 in the radial direction of the axis of the rotating part 121 can be any one of 0°, 5°, 8°, 10°, 12°, 15°, 18°, 20°, 23°, 25°, 27°, 30°, 31°, 34°, 35°, 36°, 38°, 40°, 41°, 42°, 43°, 44°, and 45°, or any value between any two of the above-mentioned value ranges. For example, the angle α between the winding needle 11 and the cutting portion 122 of the cutter 12 in the radial direction of the axis of the rotating part 121 ranges from 0° to 40°.

[0091] The cutting portion 122 with such a movable range can accommodate more winding needles 11 .

[0092] In a possible embodiment, the angle α between the winding needle 11 and the cutting portion 122 of the cutter 12 in the radial direction of the axis of the rotating portion 121 is in a range of 0° to 30°.

[0093] The angle α between the winding needle 11 and the cutting portion 122 of the cutter 12 in the radial direction of the axis of the rotating part 121 can be any one of 0°, 1°, 2°, 3°, 4°, 5°, 8°, 10°, 11°, 12°, 13°, 15°, 16°, 17°, 18°, 20°, 21°, 23°, 25°, 27°, 28°, and 30°, or any value between any two of the above-mentioned value ranges. For example, the angle α between the winding needle 11 and the cutting portion 122 of the cutter 12 in the radial direction of the axis of the rotating part 121 ranges from 0° to 25°.

[0094] This range of motion can accommodate more winding needles 11 while also providing better cutting capabilities.

[0095] Please refer to Figure 8 and Figure 9 , Figure 8 A schematic side view of the winding needle assembly according to one or more embodiments of the present application; Figure 9The following is a schematic side view of a winding needle assembly according to one or more other embodiments of the present application. In one possible embodiment, the winding needle 11 includes a material drop position. The material drop position includes a third groove 117 and a fourth groove 118. The third groove 117 and the fourth groove 118 are arranged opposite each other and located on the same diameter of the winding needle 11. The angle β between the diameter of the third groove 117 and the fourth groove 118 and the radius of the second groove 112 is 20° to 160°.

[0096] The unloading position is used to support the end of the diaphragm 20 and other components, and is also the position for unloading after winding is completed. The third groove 117 and the fourth groove 118 extend along the axial direction of the winding needle 11 and pass through the winding needle 11. The third groove 117 and the fourth groove 118 are used to avoid the unloading device during unloading. The diameter of the third groove 117 and the fourth groove 118 is C-C', and the radius of the second groove 112 is D-D'. The angle β between the diameter of the third groove 117 and the fourth groove 118 and the radius of the second groove 112 is the angle β between C-C' and D-D'. The angle between the diameter of the third groove 117 and the fourth groove 118 and the radius of the second groove 112 can be any one of 20°, 25°, 28°, 30°, 32°, 35°, 38°, 40°, 50°, 55°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 155°, and 160°, or any value between any two of the above-mentioned value ranges, for example, 25° to 155°.

[0097] This arrangement can adjust the angle of the cutter 12 according to the actual situation such as the size of the winding needle 11, so as to keep the diaphragm 20 and the cutter 12 in a vertical state at the moment of cutting.

[0098] In a possible embodiment, an angle β between the diameter of the third groove 117 and the fourth groove 118 and the radius of the second groove 112 is 30° to 150°.

[0099] The angle β between the diameter of the third groove 117 and the fourth groove 118 and the radius of the second groove 112 can be any one of 30°, 32°, 35°, 38°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115°, 120°, 125°, 130°, 135°, 140°, 145°, and 150°, or any value between any two of the above-mentioned numerical ranges, for example, 35° to 145°.

[0100] This arrangement can further maintain the diaphragm 20 and the cutter 12 in a vertical state at the moment of cutting.

[0101] In one possible embodiment, the winding needle 11 includes a first winding needle 115, a second winding needle 116, and a rotating member. The first and second winding needles 115, 116 are semicircular in structure, facing each other and spaced apart. Both the first and second winding needles 115, 116 are connected to the rotating member, and the gap between them serves as the material discharge point.

[0102] This type of winding needle 11 is a split structure, divided into two semicircular structures. This structure is often used on larger winding needles 11. Because the winding needle 11 is divided into a first winding needle 115 and a second winding needle 116, each part is lightweight. Furthermore, the semicircular structure provides greater stability during storage and transportation, making it less prone to rolling. The rotating member drives the first and second winding needles 115, 116 to rotate. The first and second winding needles 115, 116 can be detachably connected to the rotating member.

[0103] The winding needle 11 of this structure is convenient for storage and installation.

[0104] In a possible embodiment, the circumference of the winding needle 11 is 200 to 2000 mm.

[0105] The circumference of winding needle 11 is the length of its outer circumference. To measure the circumference of winding needle 11, treat it as a cylinder and calculate or measure the circumference of the circle encompassing the outer surface of winding needle 11. The same cutter 12 can be used for winding needles 11 with circumferences ranging from 200 to 2000 mm. The circumference of the winding needle 11 can be any one of 200mm, 250mm, 300mm, 350mm, 400mm, 450mm, 500mm, 600mm, 700mm, 800mm, 900mm, 1000mm, 1100mm, 1200mm, 1300mm, 1400mm, 1500mm, 1600mm, 1700mm, 1800mm, 1900mm, and 2000mm, or any data between any two of the above numerical ranges. For example, the circumference of the winding needle 11 can be 300mm to 1800mm.

[0106] The same cutting knife 12 can be adapted to winding needles 11 of various circumferences.

[0107] In a possible embodiment, the winding needle assembly 10 further includes a heating element 13 . The heating element 13 is disposed at the bottom of the second groove 112 , and the rotating portion 121 is in contact with the heating element 13 .

[0108] The heating element 13 can be an electric heating couple. The heating element 13 is used to heat the cutter 12. In some cases, the heating element 13 can also cool the cutter 12. The heating element 13 is in contact with the rotating part 121, so that the heat generated by the heating element 13 can be conducted to the rotating part 121, and then conducted to the cutting part 122 by the rotating part 121, so that the cutting part 122 reaches a certain temperature, thereby achieving thermal cutting of the diaphragm 20. There can be one heating element 13, which is laid on the bottom of the second groove 112, and the rotating part 121 is arranged on the surface of the heating element 13 away from the bottom of the second groove 112. Alternatively, there can be multiple heating elements 13, and the rotating part 121 is arranged to contact the bottom of the second groove 112, and the heating elements 13 are located on opposite sides of the rotating part 121. It is sufficient that the heating element 13 is in contact with the rotating part 121, and the arrangement method is not limited.

[0109] The provision of the heating element 13 enables the cutter 12 to cut the diaphragm 20 more quickly during cutting.

[0110] In a possible embodiment, the heating range of the heating element 13 is 0 degrees Celsius to 300 degrees Celsius.

[0111] The heating range of the heating element 13 can be 0 degrees Celsius, 10 degrees Celsius, 20 degrees Celsius, 30 degrees Celsius, 40 degrees Celsius, 50 degrees Celsius, 60 degrees Celsius, 70 degrees Celsius, 80 degrees Celsius, 90 degrees Celsius, 100 degrees Celsius, 110 degrees Celsius, 120 degrees Celsius, 130 degrees Celsius, 140 degrees Celsius, 150 degrees Celsius, 160 degrees Celsius, 170 degrees Celsius, 180 degrees Celsius, 190 degrees Celsius, etc. Any value among 0 degrees Celsius, 200 degrees Celsius, 210 degrees Celsius, 220 degrees Celsius, 230 degrees Celsius, 240 degrees Celsius, 250 degrees Celsius, 260 degrees Celsius, 270 degrees Celsius, 280 degrees Celsius, 290 degrees Celsius, 300 degrees Celsius, or any data between any two of the above numerical ranges, for example, the heating range of the heating element 13 can be 30 degrees Celsius to 280 degrees Celsius.

[0112] This heating range can ensure that the cutter 12 has a sufficient temperature when cutting, and will not cause adverse effects on components such as the diaphragm 20 on the winding needle 11 due to high temperature when not cutting.

[0113] Please refer to Figure 10 , Figure 10 This is an enlarged front view of a portion of the structure of the winding needle assembly of one or more embodiments of the present application. In one possible embodiment, connecting portions 119 are provided on opposite sides of the winding needle 11, and the rotating portion 121 of the cutter 12 is detachably connected to the connecting portions 119.

[0114] The opposite sides of the winding needle 11 refer to two opposite planar portions of the winding needle 11. Connecting portions 119 may be provided corresponding to the grooves 110 to connect to the rotating portion 121 of the cutter 12. The connection may be by screw connection, snap connection, or the like.

[0115] The rotating portion 121 of the cutter 12 is connected via the connecting portion 119 , thereby achieving a detachable connection of the cutter 12 .

[0116] In a possible embodiment, the rotating portion 121 is detachably rotatably connected to the connecting portion 119 .

[0117] The detachable rotation connection is, for example, a screw connection, or other cylindrical fixing member connection, or a connection through a bearing or a gear. It only needs that the rotating portion 121 and the connecting portion 119 are detachably connected so that the rotating portion 121 can rotate relative to the connecting portion 119.

[0118] This arrangement allows the cutter 12 to be rotated without the need for disassembly or adjustment, making it more convenient to use.

[0119] Please refer to Figure 11 and Figure 12 , Figure 11 A schematic diagram of the cutting state structure of the diaphragm cutting device according to one or more embodiments of the present application; Figure 12 for Figure 11 In order to solve the above technical problems, another technical solution adopted by the present application is to provide a diaphragm cutting device 1, which includes the needle winding assembly 10 described in any one of the above.

[0120] By arranging the cutter 12 on the winding needle 11 in the winding needle assembly 10, it can be ensured that the cutter 12 and the winding needle 11 will not collide, thereby improving the safety of the winding process; by the detachable connection between the rotating part 121 of the cutter 12 and the winding needle 11, it can be achieved that one cutter 12 can adapt to different winding needles 11, and the cutting part 122 can be rotated to improve the adaptability of the cutter 12 to different models of winding needles 11.

[0121] In a possible embodiment, the diaphragm cutting device 1 further includes a pressing roller 30 , which is disposed corresponding to the groove 110 to press the diaphragm 20 into the groove 110 .

[0122] The pressure roller 30 can be controlled by a motor or a cylinder. In a possible embodiment, the process of the diaphragm cutting device 1 cutting the diaphragm 20 is as follows: the empty winding needle 11 is reversed from the unloading position to the winding position, and the pressure roller 30 is driven by the servo motor to move to the preset position. At the same time, the cylinder maintains a certain pressure and keeps close to the winding needle 11 but not in contact. The state at this time is like Figure 2 and Figure 3 When the winding needle 11 rotates to the preset position, that is, when the groove 110 is in place, the pressure roller 30 moves further under the control of the servo motor, and the end of the pressure roller 30 extends into the first groove 111 of the winding needle 11. After the pressure roller 30 extends into the first groove 111, the pressure roller 30 maintains a certain pressure and generates negative pressure through the adsorption hole 113, thereby applying tension to the diaphragm 20. At the same time, the cylinder of the pressure roller 30 maintains a certain air pressure to press the diaphragm 20 to prevent it from retreating. The state at this time is as follows Figure 11 and Figure 12 state. During this process, the cutter 12 rotates synchronously with the winding needle 11 to complete the cutting of the diaphragm 20. After the cutting is completed, the pressure roller 30 retreats before the electrode is fed in, and maintains a safe distance of more than 2 mm from the diaphragm 20. The first displacement of the pressure roller 30, that is, the process of the end of the pressure roller 30 penetrating into the first groove 111 of the winding needle 11, can be simultaneously controlled by the servo motor and the cylinder to achieve rapid alignment and initial contact of the pressure roller 30. The second displacement of the pressure roller 30, that is, the process of the pressure roller 30 disengaging from the first groove 111, can be controlled only by the servo motor to achieve precise adjustment of the pressure roller 30, ensuring the stability and reliability of the diaphragm 20 during the cutting process.

[0123] The pressing roller 30 cooperates with the winding needle 11 to better cut the diaphragm 20 .

[0124] Finally, in a specific application scenario, in order to address the problem of insufficient adaptability between the cutter 12 and the winding needle 11 while ensuring the safety of the existing winding process, the winding needle assembly 10 of the present application includes a winding needle 11 and a cutter 12. A groove 110 arranged along the axial direction is formed on the winding needle 11. The cutter 12 includes a rotating part 121 and a cutting part 122 connected to each other. The rotating part 121 is arranged at the bottom of the groove 110 and is detachably connected to the winding needle 11. One end of the cutting part 122 is connected to the rotating part 121, and the other end is located in the groove 110. The rotating part 121 can rotate in the groove 110 so that the cutting part 122 can rotate. The groove 110 includes a first groove 111 and a second groove 112. The second groove 112 is located at the bottom of the first groove 111. At least a portion of the rotating part 121 is arranged in the second groove 112. One end of the cutting part 122 is connected to the rotating part 121, and the other end is located in the first groove 111. Adsorption holes 113 are provided on the sidewalls of the first groove 111 .

[0125] By placing the cutter 12 on the winding needle 11, it is possible to ensure that the cutter 12 and the winding needle 11 do not collide, thereby improving the safety of the winding process; by the detachable connection between the rotating portion 121 of the cutter 12 and the winding needle 11, it is possible to achieve that one cutter 12 can adapt to different winding needles 11, and the cutting portion 122 can rotate to improve the adaptability of the cutter 12 to different types of winding needles 11. The setting of the first groove 111 and the second groove 112 can prevent the cutting portion 122 of the cutter 12 from extending outside the groove 110, ensuring the safety of the cutter 12 when not cutting. The setting of the adsorption hole 113 can make it possible to fix the diaphragm 20 on the side wall of the first groove 111 when it is necessary to cut the diaphragm 20, thereby facilitating cutting.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A needle winding assembly, characterized in that: The needle winding assembly comprises: A winding needle, wherein the winding needle is formed with a groove arranged along the axial direction; A cutter, the cutter comprising a rotating portion and a cutting portion connected to each other, the rotating portion being disposed at the bottom of the groove and detachably connected to the winding needle, one end of the cutting portion being connected to the rotating portion and the other end being located in the groove; The rotating portion is capable of rotating in the groove, so that the cutting portion can rotate.

2. The needle winding assembly according to claim 1, characterized in that: The groove includes a first groove and a second groove, the second groove is located at the bottom of the first groove, at least part of the rotating part is arranged in the second groove, one end of the cutting part is connected to the rotating part, and the other end is located in the first groove.

3. The needle winding assembly according to claim 2, characterized in that: Adsorption holes are provided on the sidewalls of the first groove.

4. The needle winding assembly according to claim 3, characterized in that: The adsorption holes are provided in at least one row and arranged along the axial direction of the winding needle.

5. The needle winding assembly according to claim 3, characterized in that: The adsorption holes are circular, elliptical, fan-shaped and polygonal.

6. The needle winding assembly according to claim 5, characterized in that: The diameter, single side dimension or long axis dimension of the adsorption hole is 1 mm to 10 mm.

7. The needle winding assembly according to any one of claims 1 to 6, characterized in that: The angle between the winding needle and the cutting portion of the cutter in the radial direction of the axis of the rotating portion is in a range of 0° to 45°.

8. The needle winding assembly according to claim 7, characterized in that: The angle between the winding needle and the cutting portion of the cutter in the radial direction of the axis of the rotating part is in the range of 0° to 30°.

9. The needle winding assembly according to any one of claims 2 to 6, characterized in that: The winding needle includes a material discharge position, which includes a third groove and a fourth groove. The third groove and the fourth groove are arranged opposite to each other and are located on the same diameter of the winding needle. The angle between the diameter of the third groove and the fourth groove and the radius of the second groove is 20° to 160°.

10. The needle winding assembly according to claim 9, characterized in that: The angle between the diameter of the third groove and the fourth groove and the radius of the second groove is 30° to 150°.

11. The needle winding assembly according to claim 9, characterized in that: The winding needle includes a first winding needle, a second winding needle and a rotating part. The first winding needle and the second winding needle are semicircular structures. The first winding needle and the second winding needle are opposite to each other and are arranged at intervals. The first winding needle and the second winding needle are both connected to the rotating part. The gap between the first winding needle and the second winding needle is the material unloading position.

12. The needle winding assembly according to any one of claims 1 to 6, characterized in that: The circumference of the winding needle is 200 to 2000 mm.

13. The needle winding assembly according to any one of claims 2 to 6, characterized in that: The winding needle assembly further includes a heating element, which is disposed at the bottom of the second groove, and the rotating portion is in contact with the heating element.

14. The needle winding assembly according to claim 13, wherein: The heating range of the heating element is 0 degrees Celsius to 300 degrees Celsius.

15. The needle winding assembly according to any one of claims 1 to 6, characterized in that: Connecting parts are provided on opposite sides of the winding needle, and the rotating part of the cutter is detachably connected to the connecting parts.

16. The needle winding assembly according to claim 15, characterized in that: The rotating portion is detachably connected to the connecting portion.

17. A diaphragm cutting device, characterized in that: The diaphragm cutting device comprises a winding needle assembly as described in any one of claims 1-16.

18. The diaphragm cutting device according to claim 17, characterized in that The diaphragm cutting device further includes a pressing roller, which is arranged corresponding to the groove to press the diaphragm into the groove.

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