Diaphragm cutter mechanism, diaphragm cutting device and winding system

Abstract

The utility model discloses a diaphragm cutter mechanism, a diaphragm cutting device and a winding system, and relates to the field of battery production equipment. The diaphragm cutter mechanism comprises a rotating shaft, a heat insulation wrapping assembly, a hot cutter and a heating piece, the heat insulation wrapping assembly is connected with the side wall of the rotating shaft, the hot cutter comprises a cutter body and a blade, the heating piece is arranged in the cutter body, the heat insulation wrapping assembly wraps the outer surface of the cutter body, and the blade is arranged on the outer surface of the cutter body in a protruding mode and extends out of the wrapping assembly. The rotating shaft is used for rotating around the axis under the action of external force so as to drive the blade to cut off the diaphragm in the composite material belt. According to the diaphragm cutter mechanism, the production efficiency can be improved, and the energy consumption can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of battery production equipment, in particular to a diaphragm cutter mechanism, a diaphragm cutting device and a winding system. Background Art

[0002] In the process of preparing lithium battery core, after the positive electrode sheet, negative electrode sheet and separator are combined to form a composite material strip, the composite material strip needs to be wound using a winding process. After completing the winding of one core, the composite material strip needs to be cut by cutting the separator to carry out the winding of the next core.

[0003] At present, heating resistance wire is commonly used in the market to cut diaphragms. However, in actual applications, the resistance wire will be stretched and deformed due to heat. The amount of deformation will increase with the number of uses. In order to avoid affecting the cutting effect of the diaphragm, the resistance wire needs to be replaced frequently, resulting in low production efficiency. Utility Model Content

[0004] The utility model aims to provide a diaphragm cutting mechanism, which can improve production efficiency and reduce energy consumption.

[0005] Another object of the present invention is to provide a diaphragm cutting device, which can improve production efficiency and reduce energy consumption.

[0006] Another object of the utility model is to provide a winding system, which has the characteristics of higher production efficiency and lower energy consumption.

[0007] The embodiment of the utility model provides a technical solution:

[0008] A diaphragm cutting knife mechanism comprises a rotating shaft, a heat-insulating coating component, a hot cutting knife and a heating element, wherein the heat-insulating coating component is connected to the side wall of the rotating shaft, the hot cutting knife comprises a knife body and a blade, the heating element is arranged inside the knife body, the heat-insulating coating component is coated on the outer surface of the knife body, the blade is protruded from the outer surface of the knife body and extends out of the coating component, and the rotating shaft is used to rotate around its own axis under the action of external force to drive the blade to cut the diaphragm in the composite material strip.

[0009] In an optional embodiment, the thermal insulation covering assembly includes a thermal insulation base and a thermal insulation pressure cap, the thermal insulation base is connected to the side wall of the rotating shaft, the thermal insulation base is provided with a mating protrusion for supporting the blade body, and the blade is provided on the side of the blade body away from the mating protrusion; the thermal insulation pressure cap is covered on the blade body and plugged into the mating protrusion, and the thermal insulation pressure cap is penetrated by a clearance hole for the blade to pass through.

[0010] In an optional embodiment, the diaphragm cutter mechanism further includes a temperature detection component, which is disposed on the rotating shaft and is used to detect the temperature of the cutter body or the blade.

[0011] In an optional embodiment, the diaphragm cutting mechanism further includes a controller, which is electrically connected to the temperature detecting element and the heating element, respectively, and is used to control the temperature of the heating element according to the detection result of the temperature detecting element.

[0012] In an optional embodiment, the diaphragm cutter mechanism further comprises a conductive slip ring disposed on the rotating shaft, and the conductive slip ring is used to provide an external power source for the heating element and the temperature detection element.

[0013] In an optional embodiment, the diaphragm cutter mechanism further includes a pressing assembly, which is disposed on the rotating shaft and presses the temperature detecting member onto the cutter body or the cutting edge.

[0014] The embodiment of the utility model also provides a diaphragm cutting device, including a device body, a mounting part and a diaphragm cutting knife mechanism as described above, wherein the diaphragm cutting knife mechanism includes a rotating shaft, a heat-insulating coating component, a hot cutting knife and a heating element, wherein the heat-insulating coating component is connected to the side wall of the rotating shaft, wherein the hot cutting knife includes a knife body and a blade, wherein the heating element is arranged inside the knife body, wherein the heat-insulating coating component covers the outer surface of the knife body, wherein the blade is convexly arranged on the outer surface of the knife body and extends out of the coating component, wherein the rotating shaft is used to rotate around its own axis under the action of an external force, so as to drive the blade to cut the diaphragm in the composite material strip. The mounting part is movably arranged on the device body, wherein the diaphragm cutting knife mechanism is arranged on the mounting part, and wherein the rotating shaft can rotate relative to the mounting part, wherein the mounting part is used to drive the diaphragm cutting knife mechanism to approach or move away from the composite material strip under the action of an external force.

[0015] In an optional embodiment, the diaphragm cutting device also includes a pressure roller driving member and a pressure roller, wherein the pressure roller driving member is disposed on the mounting member, the pressure roller is rotatably connected to an output end of the pressure roller driving member, a rotation centerline of the pressure roller is parallel to a rotation centerline of the rotating shaft, and the pressure roller is used to support the composite material strip.

[0016] An embodiment of the utility model also provides a winding system, including a winding device and the aforementioned diaphragm cutting device, wherein the winding device is provided with a plurality of winding needles, the pressure roller is used to support the portion of the composite material strip between two adjacent winding needles under the drive of the pressure roller driving member, and the rotating shaft is used to drive the blade to cooperate with the rear winding needle of the two winding needles to cut the diaphragm of the composite material strip.

[0017] In an optional embodiment, the winding device is further provided with a support roller, which is located between two adjacent winding needles and is used to support the composite material strip; the number of the pressure roller driving members and the pressure rollers are both multiple, the multiple pressure roller driving members include a first pressure roller driving member and a second pressure roller driving member, and the multiple pressure rollers include a first pressure roller and a second pressure roller;

[0018] The first pressure roller is rotatably connected to the output end of the first pressure roller driving component, and is used to clamp the composite material strip together with the support roller under the drive of the first pressure roller driving component; the second pressure roller is rotatably connected to the output end of the second pressure roller driving component, and is used to support the part of the composite material strip between the support roller and the rear winding needle under the drive of the second pressure roller driving component.

[0019] Compared with the prior art, the diaphragm cutting knife mechanism provided by the utility model has a hot cutting knife including a knife body and a blade, and a heating element is arranged inside the knife body. The knife body and the blade are heated by the heat generated by the heating element, and the hot cutting of the diaphragm is realized instead of the resistance wire. In addition, since the knife body is covered by the heat-insulating covering component, the heat of the heating element and the knife body is prevented from dissipating outward, and the diaphragm is only hot-cut by the blade, which avoids heat waste and can reduce energy consumption. Therefore, the beneficial effects of the diaphragm cutting knife mechanism provided by the utility model include: it can improve production efficiency and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic structural diagram of a diaphragm cutter mechanism provided in an embodiment of the utility model;

[0022] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0023] Figure 3 A schematic diagram of the structure of a diaphragm cutting device provided in an embodiment of the utility model;

[0024] Figure 4 A partial structural schematic diagram of a winding system provided in an embodiment of the utility model.

[0025] Icons: 100-diaphragm cutting knife mechanism; 110-rotating shaft; 120-thermal insulation coating assembly; 121-thermal insulation base; 1211-matching protrusion; 122-thermal insulation pressure cap; 130-hot cutting knife; 131-knife body; 132-blade; 140-heating element; 150-temperature detection element; 160-conductive slip ring; 170-clamping assembly; 200-composite material strip; 300-diaphragm cutting device; 310-device body; 320-mounting part; 330-first pressure roller driving part; 340-second pressure roller driving part; 350-first pressure roller; 360-second pressure roller; 500-winding system; 510-winding device; 520-winding needle; 530-support roller. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships that are usually understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0030] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings.

[0033] Example

[0034] Please refer to Figure 1 and Figure 2 , Figure 1 FIG. 1 is a schematic structural diagram of the diaphragm cutting mechanism 100 provided in this embodiment. Figure 2 Shown Figure 1 Sectional view of AA.

[0035] The diaphragm cutting mechanism 100 provided in this embodiment includes a rotating shaft 110, a thermal insulation coating component 120, a hot cutting knife 130 and a heating element 140. The thermal insulation coating component 120 is connected to the side wall of the rotating shaft 110. The hot cutting knife 130 includes a knife body 131 and a blade 132. The heating element 140 is arranged inside the knife body 131. The thermal insulation coating component 120 is coated on the outer surface of the knife body 131. The blade 132 is protruded from the outer surface of the knife body 131 and extends out of the coating component. The rotating shaft 110 is used to rotate around its own axis under the action of external force to drive the blade 132 to cut the diaphragm in the composite material strip 200.

[0036] In fact, the diaphragm cutting mechanism 100 provided in this embodiment also includes a rotating motor (not shown in the figure), which is connected to the rotating shaft 110 and drives the rotating shaft 110 to rotate with its own axis as the rotation center line, thereby driving the blade 132 to rotate to cut the diaphragm.

[0037] It is understandable that the hot cutter 130 is made of a heat-conducting material, usually metal. Its blade 131 and blade 132 extend along the rotating shaft 110. A storage cavity is provided inside the blade 131, and the heat generating element is installed in the heating cavity. In actual application, the heating element 140 generates heat to heat the blade 131, and the blade 131 transfers the heat to the blade 132, and the blade 132 completes the hot cutting of the diaphragm during the rotation process.

[0038] The heat-insulating covering component 120 is made of heat-insulating material, and covers the blade body 131 and the heating element 140, thereby preventing the heat from the heating element 140 and the blade body 131 from leaking out, and transferring all the heat to the blade 132. Under the same power, the blade 132 has a higher temperature, which can reduce energy consumption. In addition, the covering of the blade body 131 and the heating element 140 by the heat-insulating covering component 120 also forms heat-insulating protection for surrounding components, thereby improving safety.

[0039] In fact, in this embodiment, the thermal insulation covering assembly 120 includes a thermal insulation base 121 and a thermal insulation pressure cap 122. The thermal insulation base 121 is connected to the side wall of the rotating shaft 110. The thermal insulation base 121 is provided with a matching protrusion 1211 for supporting the blade body 131. The blade 132 is protruded on the side of the blade body 131 away from the matching protrusion 1211; the thermal insulation pressure cap 122 is covered on the blade body 131 and plugged into the matching protrusion 1211, and a clearance hole for the blade 132 to pass through is provided through the thermal insulation pressure cap 122.

[0040] In actual application, when assembling the diaphragm cutter mechanism 100, the hot cutter 130 can be placed on the matching protrusion 1211 of the heat-insulating base 121 first, and then the heat-insulating pressure cap 122 is placed on the hot cutter 130. In this process, the blade 132 of the hot cutter 130 is aligned with the clearance hole on the heat-insulating pressure cap 122. In the process of pressing down the heat-insulating pressure cap 122, the heat-insulating pressure cap 122 gradually covers the blade 131, and the blade 132 gradually extends out of the clearance hole. Until the matching protrusion 1211 of the heat-insulating base 121 is embedded in the heat-insulating pressure cap 122, and the heat-insulating pressure cap 122 and the heat-insulating pressure cap 122 are used to cover and clamp the blade 131, the assembly of the hot cutter 130 and the heat-insulating covering assembly 120 is completed.

[0041] After the hot cutter 130 and the heat-insulating covering assembly 120 are assembled, the heat-insulating base 121 of the heat-insulating covering assembly 120 can be installed on the side wall of the rotating shaft 110. There are many ways to install it, such as bonding, screw fixing, etc. In this embodiment, in order to further simplify the assembly operation, two embedding grooves are provided on the side wall of the rotating shaft 110 at intervals, and the extension direction of the two embedding grooves is parallel to the axis of the rotating shaft 110. The heat-insulating base 121 is placed between the two embedding grooves, and the heat-insulating covering assembly 120 between the two embedding grooves is clamped and fixed by two inserts correspondingly embedded in the two embedding grooves.

[0042] The membrane cutting mechanism 100 provided in this embodiment further includes a temperature detecting member 150 and a controller (not shown in the figure). The temperature detecting member 150 is arranged on the rotating shaft 110 and is used to detect the temperature of the blade 131 or the blade 132. The controller is electrically connected to the temperature detecting member 150 and the heating member 140 respectively, and is used to control the temperature of the heating member 140 according to the detection result of the temperature detecting member 150, so as to realize the closed-loop control of the temperature of the blade 132, so that the temperature of the blade 132 always fluctuates within a fixed small range, thereby ensuring the cutting effect of the membrane.

[0043] In order to facilitate the external power supply of the heating element 140 and the temperature detection element 150 , the diaphragm cutter mechanism 100 provided in this embodiment further includes a conductive slip ring 160 disposed on the rotating shaft 110 , and the heating element 140 and the temperature detection element 150 are externally connected to the power supply through the conductive slip ring 160 .

[0044] In fact, the temperature detection member 150 in this embodiment is a fixed pressed sheet thermocouple, and the diaphragm cutter mechanism 100 provided in this embodiment further includes a pressing assembly 170, which is disposed on the rotating shaft 110 and presses the temperature detection member 150 against the blade 131 or the blade 132. In other embodiments, the temperature detection member 150 can also be selected according to actual application conditions, for example, a non-contact detection member can be used to achieve non-contact temperature measurement of the blade 132.

[0045] In summary, the diaphragm cutting mechanism 100 provided in this embodiment can improve the production efficiency of the battery cell and reduce energy consumption, and also has the characteristics of higher safety and convenient assembly.

[0046] In addition, this embodiment also provides a diaphragm cutting device 300, please refer to Figure 3 , Figure 3 The figure is a schematic structural diagram of the diaphragm cutting device 300 .

[0047] The diaphragm cutting device 300 provided in this embodiment also includes a device body 310, a mounting member 320 and the aforementioned diaphragm cutter mechanism 100. The mounting member 320 is movably arranged on the device body 310, the diaphragm cutter mechanism 100 is arranged on the mounting member 320, and the rotating shaft 110 can rotate relative to the mounting member 320. The mounting member 320 is used to drive the diaphragm cutter mechanism 100 to approach or move away from the composite material strip 200 under the action of external force.

[0048] In fact, the rotary motor of the membrane cutting mechanism 100 is arranged on the mounting member 320, and the rotary motor drives the rotating shaft 110 to rotate. In addition, the membrane cutting device 300 provided in this embodiment also includes a linear motor (not shown in the figure), which is arranged on the device body 310 and is in transmission connection with the mounting member 320, and is used to drive the mounting member 320 to move on the device body 310, so as to drive the membrane cutting mechanism 100 to approach or move away from the composite material strip 200.

[0049] The diaphragm cutting device 300 provided in this embodiment also includes a pressure roller driving component and a pressure roller. The pressure roller driving component is arranged on the mounting component 320. The pressure roller is rotatably connected to the output end of the pressure roller driving component. The rotation center line of the pressure roller is parallel to the rotation center line of the rotating shaft 110. The pressure roller is used to support the composite material strip 200.

[0050] In actual application, when the winding device 510 is winding the composite material strip 200 to prepare a wound battery cell, if it is necessary to cut the diaphragm of the composite material strip 200, the linear motor drives the mounting member 320 to move toward the composite material strip 200 on the device body 310. After moving to a certain position, the pressure roller driving member drives the pressure roller to continue to move toward the composite material strip 200 until the pressure roller abuts against the composite material strip 200 and rotates with the drive of the composite material strip 200 to keep the composite material strip 200 in a tensioned state. The rotary motor drives the blade 132 to rotate until it cuts the diaphragm of the composite material strip 200 in a tensioned state.

[0051] In fact, in the present embodiment, the number of roller driving members and rollers are both multiple, the multiple roller driving members include a first roller driving member 330 and a second roller driving member 340, and the multiple rollers include a first roller 350 and a second roller 360; the first roller 350 is rotatably connected to the output end of the first roller driving member 330, and the second roller 360 is rotatably connected to the output end of the second roller driving member 340, and the first roller 350 and the second roller 360 are both used to support the composite material strip 200.

[0052] Benefiting from the beneficial effects of the aforementioned diaphragm cutting mechanism 100, the diaphragm cutting device 300 provided in this embodiment can improve the production efficiency of the battery cell, reduce energy consumption, and has the characteristics of higher safety and convenient assembly. In addition, since the rotating shaft 110 drives the blade 132 to rotate, the linear speed can be equal to the conveying speed of the composite material strip 200, and the diaphragm cutting device 300 provided in this embodiment can also achieve non-deceleration cutting of the composite material strip 200.

[0053] In addition, this embodiment also provides a winding system 500, please refer to Figure 4 , Figure 4 The figure shows a partial structural schematic diagram of the winding system 500 .

[0054] The winding system 500 provided in this embodiment includes a winding device 510 and the aforementioned diaphragm cutting device 300. The winding device 510 is provided with a plurality of winding needles 520. The pressure roller is used to support the portion of the composite material strip 200 between two adjacent winding needles 520 at the driving member of the pressure roller driving member. The rotating shaft 110 is used to drive the blade 132 to cooperate with the rear winding needle 520 of the two winding needles 520 to cut the diaphragm of the composite material strip 200.

[0055] In this embodiment, the winding device 510 is further provided with a support roller 530, which is located between two adjacent winding needles 520 and is used to support the composite material strip 200. The first pressing roller 350 is used to clamp the composite material strip 200 together with the support roller 530 under the drive of the first pressing roller driving member 330, and the second pressing roller 360 is used to press the portion of the composite material strip 200 between the support roller 530 and the rear winding needle 520 under the drive of the second pressing roller driving member 340.

[0056] It can be understood that in the conveying direction of the composite material strip 200, the rotating shaft 110, the second pressing roller 360 and the first pressing roller 350 are arranged in sequence, and after the two adjacent winding needles 520 switch positions, the linear motor driving mounting member 320 drives the diaphragm cutting knife mechanism 100, the first pressing roller driving member 330 and the second pressing roller driving member 340 to move to a certain position close to the composite material strip 200, and the first pressing roller driving member 330 drives the first pressing roller 350 to press the composite material strip 200 on the supporting roller 530, and the second pressing roller driving member 340 drives the second pressing roller 360 to resist the composite material strip 200, so that the composite material strip 200 can better cover the winding needle 520. Driven by the rotating shaft 110, the blade 132 of the hot cutter 130 is embedded in the notch on the winding needle 520 at the same linear speed as the winding needle 520, thereby cutting off the diaphragm of the composite material strip 200. The head of the cut composite material strip 200 is sucked by the winding needle 520 and pre-rolled.

[0057] In summary, the winding system 500 provided in this embodiment has the characteristics of higher production efficiency and lower energy consumption.

[0058] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A diaphragm cutting mechanism, characterized in that: The invention comprises a rotating shaft (110), a heat-insulating coating component (120), a hot cutting knife (130) and a heating element (140); the heat-insulating coating component (120) is connected to the side wall of the rotating shaft (110); the hot cutting knife (130) comprises a knife body (131) and a blade (132); the heating element (140) is arranged inside the knife body (131); the heat-insulating coating component (120) is coated on the outer surface of the knife body (131); the blade (132) is protruded from the outer surface of the knife body (131) and extends out of the coating component; the rotating shaft (110) is used to rotate around its own axis under the action of an external force, so as to drive the blade (132) to cut the diaphragm in the composite material strip (200).

2. The diaphragm cutting mechanism according to claim 1, characterized in that: The thermal insulation covering component (120) comprises a thermal insulation base (121) and a thermal insulation pressure cap (122), wherein the thermal insulation base (121) is connected to the side wall of the rotating shaft (110), and a matching protrusion (1211) for supporting the blade body (131) is protruded on the thermal insulation base (121), and the blade (132) is protruded on the side of the blade body (131) away from the matching protrusion (1211); the thermal insulation pressure cap (122) is covered on the blade body (131) and plugged into the matching protrusion (1211), and a clearance hole for the blade (132) to pass through is penetrated on the thermal insulation pressure cap (122).

3. The diaphragm cutting mechanism according to claim 1, characterized in that: The diaphragm cutting mechanism (100) further comprises a temperature detecting component (150), wherein the temperature detecting component (150) is arranged on the rotating shaft (110), and the temperature detecting component (150) is used to detect the temperature of the cutting body (131) or the cutting edge (132).

4. The diaphragm cutting mechanism according to claim 3, characterized in that: The diaphragm cutting mechanism (100) further comprises a controller, which is electrically connected to the temperature detecting element (150) and the heating element (140) respectively, and is used to control the temperature of the heating element (140) according to the detection result of the temperature detecting element (150).

5. The diaphragm cutting mechanism according to claim 3, characterized in that: The diaphragm cutting mechanism (100) further comprises a conductive slip ring (160) arranged on the rotating shaft (110), wherein the conductive slip ring (160) is used to provide an external power source for the heating element (140) and the temperature detecting element (150).

6. The diaphragm cutting mechanism according to claim 3, characterized in that: The diaphragm cutter mechanism (100) further comprises a pressing assembly (170), wherein the pressing assembly (170) is arranged on the rotating shaft (110) and presses the temperature detection component (150) onto the cutter body (131) or the blade (132).

7. A diaphragm cutting device, characterized in that: It comprises a device body (310), a mounting member (320) and a diaphragm cutter mechanism (100) as described in any one of claims 1 to 6, wherein the mounting member (320) is movably arranged on the device body (310), the diaphragm cutter mechanism (100) is arranged on the mounting member (320), and the rotating shaft (110) can rotate relative to the mounting member (320), and the mounting member (320) is used to drive the diaphragm cutter mechanism (100) to approach or move away from the composite material strip (200) under the action of an external force.

8. The diaphragm cutting device according to claim 7, characterized in that: The diaphragm cutting device (300) also includes a pressure roller driving component and a pressure roller, wherein the pressure roller driving component is arranged on the mounting component (320), the pressure roller is rotatably connected to the output end of the pressure roller driving component, the rotation center line of the pressure roller is parallel to the rotation center line of the rotating shaft (110), and the pressure roller is used to support the composite material strip (200).

9. A winding system, characterized in that: It comprises a winding device (510) and a diaphragm cutting device (300) as claimed in claim 8, wherein the winding device (510) is provided with a plurality of winding needles (520), the pressure roller is used for supporting the portion of the composite material strip (200) between two adjacent winding needles (520) under the drive of the pressure roller driving member, and the rotating shaft (110) is used for driving the blade (132) to cooperate with the rear winding needle (520) of the two winding needles (520) to cut the diaphragm of the composite material strip (200).

10. The winding system according to claim 9, characterized in that The winding device (510) is further provided with a support roller (530), the support roller (530) being located between two adjacent winding needles (520) and being used to support the composite material strip (200); the number of the pressure roller driving members and the pressure rollers are both multiple, the multiple pressure roller driving members include a first pressure roller driving member (330) and a second pressure roller driving member (340), and the multiple pressure rollers include a first pressure roller (350) and a second pressure roller (360); The first pressure roller (350) is rotatably connected to the output end of the first pressure roller driving member (330), and is used to clamp the composite material strip (200) together with the support roller (530) under the drive of the first pressure roller driving member (330); the second pressure roller (360) is rotatably connected to the output end of the second pressure roller driving member (340), and is used to support the portion of the composite material strip (200) between the support roller (530) and the rear winding needle (520) under the drive of the second pressure roller driving member (340).

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