Needle winding mechanism and winding equipment

Abstract

The present invention discloses a bobbin mechanism and a winding device. The bobbin mechanism includes: a bobbin assembly, which includes a first bobbin and a second bobbin. The first bobbin and the second bobbin are arranged oppositely and are radially joined to form the bobbin assembly. A slit for clamping a winding material is formed between the first bobbin and the second bobbin; a floating block, at least one of the outer sides of the first bobbin and the second bobbin is provided with a floating block, and the floating block can move radially relative to the bobbin. The outer side surface of the floating block away from the bobbin is used for winding the winding material; an adjusting assembly, which is connected to the floating block and the bobbin and is used for adjusting the distance between the floating block and the bobbin. By providing a floating block on the outer side of the bobbin and connecting an adjusting assembly between the floating block and the bobbin, the present invention can adjust the distance between the floating block and the bobbin by using the adjusting assembly, so as to adjust the perimeter of the winding surface for winding the winding material to adapt to winding materials of different thicknesses.

Description

Technical Field

[0001] The present invention relates to the technical field of battery automation equipment, and particularly relates to a winding needle mechanism and a winding device. Background Art

[0002] During the preparation process of battery cores, a winding needle mechanism of a winding device is generally used to wind winding materials such as electrode sheets and separators to form battery cores. At present, the wound cores are prone to the problem of ear misalignment, and the ear misalignment is essentially determined by the thicknesses of the electrode sheet and the separator. Among them, the ears are arranged at intervals along the length direction of the electrode sheet on one side of the electrode sheet. When the thickness of the incoming material is large or small, the circumference of the incoming material wound on the winding needle mechanism becomes larger or smaller accordingly, thereby causing the misalignment of the ears. At present, it is impossible to ensure that the thickness of the incoming material is completely consistent, and it is difficult to solve the problem of ear misalignment. Summary of the Invention

[0003] The purpose of the present invention is to provide a winding needle mechanism and a winding device to solve the technical problem of ear misalignment in the cores wound by the winding needle mechanism in the prior art.

[0004] To solve the above technical problem, a technical solution adopted in an embodiment of the present invention is: a winding needle mechanism, including a winding needle assembly, the winding needle assembly includes a first winding needle and a second winding needle, the first winding needle and the second winding needle are oppositely arranged and are spliced along the radial direction to form the winding needle assembly, and a slit for clamping the winding material is formed between the first winding needle and the second winding needle;

[0005] A floating block, the floating block is arranged on the outer side of at least one of the first winding needle and the second winding needle, the floating block can move radially relative to the winding needle, and the outer side surface of the floating block away from the winding needle is used for winding the winding material;

[0006] An adjusting assembly, connected to the floating block and the winding needle, for adjusting the distance between the floating block and the winding needle.

[0007] In a specific embodiment, an installation groove is arranged on the outer side surface of the first winding needle and / or the second winding needle, and the floating block is arranged in the installation groove.

[0008] In a specific embodiment, the adjusting assembly includes:

[0009] A fixed block, connected to the winding needle, at least part of the floating block extends into a clamping groove formed by the fixed block and the winding needle, and there is an adjusting gap between the floating block and the fixed block. First threaded holes and second threaded holes are respectively arranged at corresponding positions of the fixed block and the floating block, a first internal thread is arranged in the first threaded hole, and a second internal thread is arranged in the second threaded hole;

[0010] Adjusting screw rod, the outer surface of the adjusting screw rod includes a first external thread and a second external thread, the first external thread is connected to the first internal thread, and the second external thread is connected to the second internal thread.

[0011] In a specific embodiment, the thread directions of the first internal thread and the second internal thread are the same, and the pitches of the first internal thread and the second internal thread are different.

[0012] In a specific embodiment, an elastic member is clamped between the fixed block and the floating block.

[0013] In a specific embodiment, it further includes:

[0014] A detection device for detecting the thickness of the winding material;

[0015] A locking device for driving the adjusting screw rod to rotate;

[0016] A control device, connected to the detection device and the locking device, for controlling the locking device to drive the adjusting screw rod to move after receiving the detection information of the detection device.

[0017] In a specific embodiment, the locking device includes:

[0018] A screwdriver;

[0019] A rotation driving member, the driving end of the rotation driving member is in transmission connection with the screwdriver and can drive the screwdriver to rotate;

[0020] A moving driving member, the driving end of the moving driving member is in transmission connection with the screwdriver and can drive the screwdriver to move to be connected to the adjusting screw rod so that the rotation driving member drives the screwdriver to drive the adjusting screw rod to rotate.

[0021] In a specific embodiment, the adjusting assembly includes:

[0022] A fixed block, connected to the winding needle, at least part of the floating block extends into the card slot formed by the fixed block and the winding needle, and there is an adjusting gap between the floating block and the fixed block. An elastic member is clamped between the fixed block and the floating block, and the elastic member applies a first acting force towards the winding needle to the floating block;

[0023] An airbag, clamped between the floating block and the winding needle;

[0024] Wherein, when the airbag is inflated, the airbag expands and applies a second acting force away from the winding needle to the floating block, and the second acting force is greater than the first acting force so that the floating block moves away from the winding needle by a certain distance.

[0025] In a specific embodiment, it further includes:

[0026] A detection device for detecting the thickness of the winding material;

[0027] An inflation and deflation device connected to the airbag for inflating and deflating the airbag;

[0028] A control device connected to the detection device and the inflation and deflation device for controlling the inflation and deflation of the airbag by the inflation and deflation device after receiving the detection information of the detection device.

[0029] To solve the above technical problems, another technical solution adopted in the embodiment of the present invention is: A winding device includes a winding needle mechanism as described in any one of the above embodiments, and the winding needle mechanism is used to wind the winding material to form an electric core.

[0030] The beneficial effects of the present invention are:

[0031] Compared with the prior art, by applying the technical solution of the present invention, a floating block is arranged outside the winding needle, and an adjusting component is connected between the floating block and the winding needle. The distance between the floating block and the winding needle can be adjusted by using the adjusting component, so that the circumference of the winding surface for winding the winding material can be adjusted. When the detection device detects the thickness of the winding material, the external device can be controlled to drive the adjusting component to automatically adjust the distance between the floating block and the winding needle, so that the circumference of the winding surface becomes larger or smaller accordingly to adapt to winding materials of different thicknesses. When the thickness of the winding material is larger, the distance between the floating block and the winding needle can be adjusted to be smaller, so that the circumference of the winding surface becomes smaller; when the thickness of the winding material is smaller, the distance between the floating block and the winding needle can be adjusted to be larger, so that the circumference of the winding surface becomes larger. Thus, the position of the tab can be ensured to be accurate, thereby preventing the phenomenon of tab misalignment. Description of the Drawings

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0033] Figure 1 is a cross-sectional schematic view of a winding needle mechanism provided by an embodiment of the present invention;

[0034] Figure 2 is Figure 1 an enlarged schematic view of the structure within the circle A in

[0035] Figure 3It is a cross-sectional schematic view of the bobbin mechanism provided by another embodiment of the present invention. Detailed implementation manners

[0036] To further illustrate the principle and structure of the present invention, the implementation manners of the present invention will be described in detail with reference to the accompanying drawings. In addition, the preferred implementation manners hereinafter are only partial embodiments of the present invention, not all embodiments. Other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts all fall within the protection scope of the present invention.

[0037] As Figures 1 - 3 shown, the present invention provides a bobbin mechanism, including: a bobbin assembly, a floating block, and an adjustment assembly. The bobbin assembly includes a first bobbin 1 and a second bobbin 2. The first bobbin 1 and the second bobbin 2 are arranged oppositely and are spliced along the radial direction to form the bobbin assembly. A slit for clamping the winding material is formed between the first bobbin 1 and the second bobbin 2. A floating block is arranged on the outer side of at least one of the first bobbin 1 and the second bobbin. The floating block can move radially relative to the bobbin. The outer side of the floating block away from the bobbin is used for winding the winding material. The adjustment assembly is connected to the floating block and the bobbin, and is used to adjust the distance between the floating block and the bobbin.

[0038] It should be noted that in the description of the present invention, the bobbin refers to the one with a floating block arranged on the outer side among the first bobbin 1 and the second bobbin 2. If a floating block is arranged on the outer side of the first bobbin 1, then the bobbin refers to the first bobbin 1. If a floating block is arranged on the outer side of the second bobbin 2, then the bobbin refers to the second bobbin 2. If floating blocks are arranged on the outer sides of both the first bobbin 1 and the second bobbin 2, then the bobbin refers to the first bobbin 1 and the second bobbin.

[0039] Specifically, the number of floating blocks is at least one. It can be arranged only on the outer side of the first winding needle 1, or only on the outer side of the second winding needle 2. Preferably, it is arranged on the outer sides of both the first winding needle 1 and the second winding needle 2. In this embodiment, the floating blocks include a first floating block 3 and a second floating block 4. The first floating block 3 is arranged on the outer side of the first winding needle 1 and can move radially relative to the first winding needle 1. The second floating block 4 is arranged on the outer side of the second winding needle 2 and can move radially relative to the second winding needle 2. The outer side surfaces of the first floating block 3 away from the first winding needle 1 and the second floating block 4 away from the second winding needle 2 are both arc surfaces. The outer side surfaces of the two floating blocks are joined to form a winding surface for winding the winding material. This winding surface can be circular or elliptical. When the number of floating blocks is one, for example, only the first floating block 3 is arranged on the outer side of the first winding needle 1, then the outer side surface of the first floating block 3 and the outer side surface of the second winding needle 2 are joined to form this winding surface. The first floating block 3 is adjustably connected to the first winding needle 1 through an adjusting assembly, and the second floating block 4 is adjustably connected to the second winding needle 2 through an adjusting assembly. The adjusting assembly can adjust the distances between the first floating block 3 and the first winding needle 1, and between the second floating block 4 and the second winding needle 2, so that the perimeter of the winding surface can be adjusted. When the thickness of the winding material is relatively large or small, by adjusting the perimeter of the winding surface to make it smaller or larger, the position of the tab can be ensured to be accurate, thus preventing the phenomenon of tab misalignment.

[0040] Applying the technical solution of this embodiment, by arranging floating blocks on the outer sides of the winding needles and connecting an adjusting assembly between the floating blocks and the winding needles, the distance between the floating blocks and the winding needles can be adjusted by using the adjusting assembly, so that the perimeter of the winding surface for winding the winding material can be adjusted. After the detection device detects the thickness of the winding material, it can control the external device to drive the adjusting assembly to automatically adjust the distance between the floating blocks and the winding needles, so that the perimeter of the winding surface becomes larger or smaller accordingly to adapt to winding materials of different thicknesses. When the thickness of the winding material is relatively large, the distance between the floating blocks and the winding needles can be adjusted to be smaller, so that the perimeter of the winding surface becomes smaller; when the thickness of the winding material is relatively small, the distance between the floating blocks and the winding needles can be adjusted to be larger, so that the perimeter of the winding surface becomes larger. Thus, the position of the tab can be ensured to be accurate, thus preventing the phenomenon of tab misalignment.

[0041] In one embodiment, mounting grooves are provided on the outer side surfaces of the first winding needle 1 and / or the second winding needle 2, and floating blocks are arranged in the mounting grooves. Specifically, as Figure 1 and Figure 3 shown, mounting grooves are respectively provided on the outer side surfaces of the first winding needle 1 and the second winding needle 2, and the first floating block 3 and the second floating block 4 are respectively accommodated in the corresponding mounting grooves, so that the outer side surface of the first floating block 3 is approximately flush with the outer side surface of the first winding needle 1, and the outer side surface of the second floating block 4 is approximately flush with the outer side surface of the second winding needle 2, thus making the overall structure of the winding needle mechanism more compact.

[0042] In one embodiment, as Figures 1 - 2 shown, the adjusting assembly includes a fixed block 5 and an adjusting screw 6. The fixed block 5 is connected to the coiling needle. At least a part of the floating block extends into the clamping groove formed by the fixed block 5 and the coiling needle, and there is an adjusting gap 53 between the floating block and the fixed block 5. First threaded holes 51 and second threaded holes 31 are respectively provided at corresponding positions of the fixed block 5 and the floating block. First internal threads are provided in the first threaded holes 51, and second internal threads are provided in the second threaded holes 31. The outer surface of the adjusting screw 6 includes a first external thread 61 and a second external thread 62. The first external thread 61 is connected to the first internal thread, and the second external thread 62 is connected to the second internal thread. Preferably, the thread directions of the first internal thread and the second internal thread are the same, and the pitches of the first internal thread and the second internal thread are different. By arranging the adjusting screw 6 to be threadedly connected to the fixed block 5 and the floating block respectively, and using the first external thread 61 and the second external thread 62 with different pitches on the outer surface of the adjusting screw 6, when the adjusting screw 6 is rotated one circle, the distance that the adjusting screw 6 moves relative to the fixed block 5 in the direction away from the coiling needle or in the direction close to the coiling needle and the distance that the floating block moves relative to the adjusting screw 6 in the direction close to the coiling needle or in the direction away from the coiling needle have a certain difference, so as to realize the adjustment of the distance between the floating block and the coiling needle, and this adjustment can be continuously and steplessly fine-tuned. For example: when the adjusting screw 6 moves 0.75 mm relative to the fixed block 5 in the direction away from the coiling needle, the adjusting screw 6 drives the floating block to also move 0.75 mm in the direction away from the coiling needle. At the same time, the floating block moves 0.70 mm relative to the adjusting screw 6 in the direction close to the coiling needle. Then finally, the floating block moves 0.05 mm relative to the coiling needle in the direction away from the coiling needle. Thus, when the adjusting screw 6 is rotated one circle, the moving distance of the floating block relative to the coiling needle is the difference between the first internal thread and the second internal thread.

[0043] Specifically, fixed blocks 5 are respectively provided on the left and right groove walls of the installation grooves of the first coiling needle 1 and the second coiling needle 2. The first coiling needle 1 and the fixed block 5, and the second coiling needle 2 and the fixed block 5 can be integrally formed or detachably connected by screws respectively. The fixed block 5 is L-shaped and includes a first connecting portion and a second connecting portion. The first connecting portion extends along the axial direction of the coiling needle assembly ( Figure 1The left and right directions in the winding needle assembly), the second connecting portion is arranged to extend radially along the winding needle assembly, and the second connecting portion is connected to the left and right groove walls of the winding needle mounting groove. The first connecting portion and the groove bottom of the winding needle mounting groove are formed with a card slot, and the left and right ends of the floating block are respectively located in a card slot. The fixed block 5 is radially penetrated with a first threaded hole 51, and the floating block is provided with a second threaded hole 31 at a position corresponding to the first threaded hole 51. The first threaded hole 51 and the second threaded hole 31 are coaxially arranged, and the first threaded hole 51 has a first internal thread, and the second threaded hole 31 has a second internal thread. The first internal thread and the second internal thread have the same thread rotation direction, and the first internal thread and the second internal thread have different pitches. The adjusting screw 6 passes through the first threaded hole 51 and is threadedly connected with the first threaded hole 51 and the second threaded hole 31. The adjusting screw 6 has a first external thread 61 that matches the first internal thread and a second external thread 62 that matches the second internal thread, and an adjustment gap 53 is provided between the first floating block 3 and the fixed block 5. Therefore, when the adjusting screw 6 is rotated, the distance between the floating block and the winding needle can be adjusted by utilizing the different pitches of the first internal thread and the second internal thread.

[0044] Furthermore, an elastic member 7 is sandwiched between the fixed block 5 and the floating block. Specifically, a first groove 52 is provided on the side of the fixed block 5 facing the floating block, and a second groove 32 is provided on the side of the floating block facing the fixed block 5, and the first groove 52 and the second groove 32 are provided correspondingly. One end of the elastic member 7 abuts against the first groove 52, and the other end of the elastic member 7 abuts against the second groove 32. The elastic member 7 can be a spring. By providing the elastic member 7, a pre-tightening force toward the winding needle can be applied to the floating block, and the pre-tightening force can prevent the adjusting screw 6 from loosening.

[0045] Furthermore, the needle winding mechanism may also include a detection device, a locking device and a control device. The detection device is used to detect the thickness of the winding material. Specifically, the detection device may be a CCD, and the winding material may be a positive or negative electrode sheet or a diaphragm. The locking device is used to drive the adjusting screw 6 to rotate. Specifically, the locking device includes at least a moving drive, a rotating drive and a screwdriver. The driving end of the rotating drive is connected to the screwdriver in a transmission manner, and can drive the screwdriver to rotate. The driving end of the moving drive is connected to the screwdriver in a transmission manner, and can drive the screwdriver to move to connect with the adjusting screw 6 so that the rotating drive drives the screwdriver to drive the adjusting screw 6 to rotate. Among them, the rotating drive may be a motor, and the moving drive may be a cylinder or a motor. The control device is connected to the detection device and the locking device, and is used to control the locking device to drive the adjusting screw 6 to move after receiving the detection information of the detection device, such as controlling the rotation angle, number of rotations, rotation direction, etc. of the adjusting screw 6.

[0046] In another embodiment, if Figure 3As shown, the adjusting assembly includes a fixed block 5, an elastic member 7, and an airbag 8. The fixed block 5 is connected to the winding needle. At least part of the floating block extends into the card slot formed by the fixed block 5 and the winding needle, and there is an adjusting gap 53 between the floating block and the fixed block 5. An elastic member 7 is clamped between the fixed block 5 and the floating block, and the elastic member 7 exerts a first acting force on the floating block towards the winding needle; an airbag 8 is clamped between the floating block and the winding needle. When the airbag 8 is inflated, the airbag 8 expands and exerts a second acting force on the floating block away from the winding needle. The second acting force is greater than the first acting force, causing the floating block to move away from the winding needle by a certain distance.

[0047] Specifically, mounting grooves are respectively provided on the outer sides of the first winding needle 1 and the second winding needle 2. Fixed blocks 5 are respectively provided on the left and right groove walls of the mounting grooves. The first winding needle 1 and the fixed block 5, and the second winding needle 2 and the fixed block 5 can be integrally formed or detachably connected by screws. The fixed block 5 is L-shaped, including a first connecting portion and a second connecting portion. The first connecting portion extends along the axial direction of the winding needle assembly ( Figure 3 in the left-right direction in the figure), and the second connecting portion extends along the radial direction of the winding needle assembly. The second connecting portion is connected to the left and right groove walls of the mounting groove of the winding needle. A card slot is formed between the first connecting portion and the bottom of the mounting groove of the winding needle. The left and right ends of the floating block are respectively located in a card slot. There is an adjusting gap 53 between the floating block and the fixed block 5. A first groove 52 is provided on the side of the fixed block 5 facing the floating block, and a second groove 32 is provided on the side of the floating block facing the fixed block 5. The first groove 52 and the second groove 32 are correspondingly arranged. One end of the elastic member 7 abuts against the first groove 52, and the other end of the elastic member 7 abuts against the second groove 32. The elastic member 7 can be a spring. The elastic member 7 exerts a first acting force on the floating block towards the winding needle; a fixed groove 33 is provided on the side of the floating block facing the winding needle, and an airbag 8 is provided in the fixed groove 33. The airbag 8 extends along the axial direction of the winding needle assembly. When the airbag 8 is inflated, the airbag 8 expands and exerts a second acting force on the floating block away from the winding needle. The second acting force is greater than the first acting force, causing the floating block to move away from the winding needle by a certain distance. When the airbags 8 in both the first winding needle 1 and the second winding needle 2 are not inflated, the winding surface formed by the outer sides of the two floating blocks has a first circumference; when the airbag 8 in the first winding needle 1 or the second winding needle 2 is inflated, one floating block moves a certain distance in the direction away from the winding needle, so that the winding surface formed by the outer sides of the two floating blocks has a second circumference; when the airbags 8 in both the first winding needle 1 and the second winding needle 2 are inflated, both floating blocks move a certain distance in the direction away from the winding needle, so that the winding surface formed by the outer sides of the two floating blocks has a third circumference. Thus, by inflating and deflating the airbag 8, the winding surface of the winding needle mechanism can have three adjustable circumferences.

[0048] Further, the winding needle mechanism may further include a detection device, an air charging and discharging device, and a control device. The detection device is used to detect the thickness of the winding material. Specifically, the detection device may be a CCD, and the winding material may be a positive or negative electrode sheet or a separator. The air charging and discharging device is connected to the airbag 8 and can charge and discharge the airbag 8. The control device is connected to the detection device and the air charging and discharging device, and is used to control the air charging and discharging device to charge and discharge the airbag 8 after receiving the detection information of the detection device.

[0049] The present invention also provides a winding device, including the winding needle mechanism described in any of the above embodiments, and the winding needle mechanism is used to wind the winding material to form an electric core.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, left, right, up, down", "lateral, vertical, perpendicular, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention. The orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0051] In addition, it should be noted that the use of words such as "first", "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it cannot be understood as a limitation on the protection scope of the present invention.

[0052] Unless otherwise specifically stated, the relative arrangement, numerical expressions and values of the components and steps described in these embodiments do not limit the scope of the present invention.)

[0053] Although the preferred examples of the present invention have been described above in conjunction with the drawings, the present invention is not limited to the above specific embodiments. The above specific embodiments are only illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms of specific transformations without departing from the spirit and scope of the present invention as claimed. Therefore, any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A coiling needle mechanism, characterized in that, Comprising: A bobbin assembly, including a first bobbin and a second bobbin, the first bobbin and the second bobbin are oppositely arranged and are joined together radially to form the bobbin assembly, and a slit for clamping a winding material is formed between the first bobbin and the second bobbin; A floating block, the floating block is arranged on the outer side of at least one of the first bobbin and the second bobbin, the floating block can move radially relative to the bobbin, and the outer side surface of the floating block away from the bobbin is used for winding the winding material; An adjusting assembly, connected to the floating block and the bobbin, for adjusting the distance between the floating block and the bobbin; A detecting device, for detecting the thickness of the winding material; A control device, connected to the detecting device, the control device controls an external device to drive the adjusting assembly to automatically adjust the distance between the floating block and the bobbin, so that the circumference of the winding surface becomes larger or smaller accordingly; The adjusting assembly includes: A fixed block, connected to the bobbin, at least part of the floating block extends into a clamping groove formed by the fixed block and the bobbin, and there is an adjusting gap between the floating block and the fixed block, and an elastic member is clamped between the fixed block and the floating block, and the elastic member exerts a first acting force on the floating block towards the bobbin; An airbag, clamped between the floating block and the bobbin; Wherein, when the airbag is inflated, the airbag expands and exerts a second acting force on the floating block away from the bobbin, and the second acting force is greater than the first acting force so that the floating block moves away from the bobbin by a certain distance.

2. The coiling needle mechanism according to claim 1, characterized in that, An installation groove is arranged on the outer side surface of the first bobbin and / or the second bobbin, and the floating block is arranged in the installation groove.

3. The coiling needle mechanism according to claim 1 or 2, characterized in that, The adjusting assembly includes: A fixed block, connected to the bobbin, at least part of the floating block extends into a clamping groove formed by the fixed block and the bobbin, and there is an adjusting gap between the floating block and the fixed block, and a first threaded hole and a second threaded hole are respectively arranged at corresponding positions of the fixed block and the floating block, the first threaded hole has a first internal thread, and the second threaded hole has a second internal thread; An adjusting screw rod, the outer surface of the adjusting screw rod includes a first external thread and a second external thread, the first external thread is connected to the first internal thread, and the second external thread is connected to the second internal thread.

4. The coiling needle mechanism according to claim 3, wherein, The thread helix directions of the first internal thread and the second internal thread are the same, and the pitches of the first internal thread and the second internal thread are different.

5. The coiling needle mechanism according to claim 3, characterized in that, An elastic member is clamped between the fixed block and the floating block.

6. The coiling needle mechanism according to claim 3, characterized in that, Further comprising: A locking device, for driving the adjusting screw rod to rotate; The control device is connected to the detecting device and the locking device, and is used for controlling the locking device to drive the adjusting screw rod to move after receiving the detection information of the detecting device.

7. The coiling needle mechanism according to claim 6, wherein, The locking device includes: A screwdriver; A rotary driving member, the driving end of the rotary driving member is in transmission connection with the screwdriver and can drive the screwdriver to rotate; A moving driving member, the driving end of the moving driving member is in transmission connection with the screwdriver, and can drive the screwdriver to move to be connected with the adjusting screw rod so that the rotary driving member drives the screwdriver to drive the adjusting screw rod to rotate.

8. The coiling needle mechanism according to claim 1, characterized in that, Further comprising: An air charging and discharging device, connected to the airbag, for charging and discharging the airbag; The control device is connected to the detection device and the air charging and discharging device, and is used for controlling the air charging and discharging device to charge and discharge the airbag after receiving the detection information of the detection device.

9. A winding device, characterized in that, Comprising the winding needle mechanism according to any one of claims 1-8, the winding needle mechanism is used for winding the winding material to form an electric core.

Images