Winding needle inserting and pulling mechanism and battery cell winding equipment

Abstract

The utility model discloses a winding needle inserting and pulling mechanism and battery cell winding equipment, and the winding needle inserting and pulling mechanism comprises a main body part which is provided with a rotatable turntable; the first driving part is mounted on the main body part, and the first driving part can drive the rotary table to rotate; a winding needle of the winding needle assembly can rotate around the axis of the winding needle assembly so as to wind a material belt, and the winding needle assembly can rotate along with the rotating disc; and the second driving piece is mounted on the rotary table, rotates along with the rotary table, and can drive the winding needle assembly to move in the axis direction of the winding needle assembly. The battery cell winding efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery production equipment, and particularly to a needle inserting and extracting mechanism and a core winding device for batteries. Background Art

[0002] During the production process of batteries, a needle needs to rotate itself to wind a tape (including separator and electrode sheet) to form a battery core. In addition to rotating itself, the needle assembly also needs to rotate with a turntable to enter the winding station, the end sticking station and the discharging station. At the winding station, the needle needs to extend (insert) to clamp the tape, and at the discharging station, the needle needs to retract (extract) to discharge the material. In the existing needle inserting and extracting mechanism for needles, the driving member for driving the needle to insert and extract is fixed. Therefore, the inserting and extracting action can only be performed after the needle assembly reaches the set position, which affects the winding efficiency of the battery core. Summary of the Utility Model

[0003] An object of the present application is to provide a new technical solution for a needle inserting and extracting mechanism and a core winding device for batteries.

[0004] To achieve the above object, according to the first aspect of the present application, a needle inserting and extracting mechanism is provided, including:

[0005] A main body member, on which a rotatable turntable is installed;

[0006] A first driving member, which is installed on the main body member and can drive the turntable to rotate;

[0007] A needle assembly, the needle of which can rotate around its axis to wind the tape, and the needle assembly can rotate with the turntable;

[0008] A second driving member, which is installed on the turntable and rotates with the turntable, and can drive the needle assembly to move along its axis direction.

[0009] Optionally, the needle assembly further includes a needle mounting seat, a connecting seat and a first motor. The needle mounting seat is provided with a convex portion, the connecting seat is provided with a concave portion, the convex portion is inserted into the concave portion and fixedly connected, and the connecting seat is fixedly connected to the rotating shaft of the first motor.

[0010] Optionally, the convex portion is provided with a first through hole radially penetrating, the concave portion is provided with a second through hole radially penetrating, the first through hole is communicated with the second through hole, the convex portion is provided with an axial threaded hole, the threaded hole is communicated with the first through hole, a pin shaft passes through the first through hole and the second through hole, and a locking member is in threaded cooperation with the threaded hole and abuts against the pin shaft.

[0011] Optionally, the turntable includes a first turntable and a second turntable respectively installed at both ends of the main body member. The first turntable and the second turntable are connected by a first connecting rod to rotate synchronously. The first driving member can drive the first turntable or the second turntable to rotate. The needle winding assembly is slidably engaged with the first connecting rod and rotates synchronously with the first turntable. The second driving member is installed on the first turntable and rotates with the first turntable, or the second driving member is installed on the second turntable and rotates with the second turntable. The second turntable is provided with an avoidance portion, and the winding needle of the needle winding assembly can pass through the avoidance portion.

[0012] Optionally, the main body member includes a first bearing seat and a second bearing seat. The first bearing seat is rotationally engaged with the first turntable, the second bearing seat is rotationally engaged with the second turntable, and the first bearing seat and the second bearing seat are connected by a second connecting rod.

[0013] Optionally, the needle insertion and extraction mechanism further includes a connecting plate, which is fixedly connected to the first bearing seat and the second bearing seat, and the first driving member is fixedly connected to the connecting plate.

[0014] Optionally, the first driving member includes a second motor, a first gear is installed on the rotating shaft of the second motor, the first turntable is fixedly connected with a second gear, and the first gear meshes with the second gear.

[0015] Optionally, the second driving member includes a third motor, the third motor is installed on the second gear, a rotatable lead screw is installed between the first turntable and the second turntable, the rotating shaft of the third motor is connected to the lead screw, and a transmission nut is in threaded cooperation with the lead screw and fixedly connected to the needle winding assembly.

[0016] Optionally, the transmission nut is fixedly connected to a transmission seat, and the transmission seat is fixedly connected to the needle winding assembly.

[0017] Optionally, the needle insertion and extraction mechanism of the winding needle includes a plurality of the needle winding assemblies and a plurality of the second driving members. Each second driving member can drive one needle winding assembly to move along its axis direction. A plurality of avoidance portions are provided on the second turntable in the circumferential direction, and each needle winding assembly can pass through one of the avoidance portions.

[0018] According to the second aspect of the present application, a battery core winding device is further provided, including the needle insertion and extraction mechanism as described in any one of the foregoing items.

[0019] In the needle inserting and extracting mechanism of the embodiment of the present application, both the second driving member and the needle winding assembly rotate synchronously with the turntable. Therefore, the second driving member can drive the needle winding assembly to perform the inserting and extracting actions at any time, without waiting for the needle winding assembly to reach the set position before acting. Therefore, the winding efficiency of the battery core is improved.

[0020] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0022] Figure 1 is a perspective view of the needle inserting and extracting mechanism of the embodiment of the present application.

[0023] Figure 2 is a perspective view of the needle inserting and extracting mechanism of the embodiment of the present application after removing the main body member.

[0024] Figure 3 is a perspective view of another angle of the needle inserting and extracting mechanism of the embodiment of the present application after removing the main body member.

[0025] Figure 4 is a front view of the needle winding assembly of the embodiment of the present application.

[0026] Figure 5 is along Figure 4 in the cross-sectional view taken along line A-A in

[0027] DESCRIPTION OF THE REFERENCE NUMERALS

[0028] 100, needle inserting and extracting mechanism; 101, main body member; 1011, first bearing seat; 1012, second bearing seat; 1013, second connecting rod; 102, first turntable; 103, second turntable; 1031, avoidance portion; 104, first connecting rod; 105, first driving member; 106, needle winding assembly; 1061, needle winding; 1062, needle winding mounting seat; 10621, convex portion; 10622, first through hole; 10623, threaded hole; 1063, connecting seat; 10631, concave portion; 10632, second through hole; 1064, first motor; 107, second driving member; 108, first gear; 109, second gear; 110, lead screw; 111, transmission nut; 112, transmission seat; 113, connecting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Reference will now be made in detail to various exemplary embodiments of the present application with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application.

[0030] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present application or its application or use.

[0031] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be regarded as part of the specification.

[0032] In all examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0033] It should be noted that: Like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0034] In the following description, "connection" includes both direct connection between two elements and indirect connection between two elements through, for example, an adapter board, middleware, etc.

[0035] In the following description, the "tape" is only used to illustrate the working principles of the pin inserting and extracting mechanism and the battery core winding device, and should not be regarded as part of the pin inserting and extracting mechanism and the battery core winding device.

[0036] In the following description, each driving member can be driven by various power sources such as air cylinders, motors, etc.

[0037] As Figure 1 shown, the pin inserting and extracting mechanism 100 in the embodiment of the present application includes: a main body member 101, a first driving member 105, a pin assembly 106, and a second driving member 107. Among them, a rotatable turntable is installed on the main body member 101. The first driving member 105 is installed on the main body member 101, and the first driving member 105 can drive the turntable to rotate. The pin 1061 of the pin assembly 106 can rotate around its axis to wind the tape, and the pin assembly 106 can rotate with the turntable. The second driving member 107 is installed on the turntable and rotates with the turntable, and the second driving member 107 can drive the pin assembly 106 to move along its axis direction.

[0038] More specifically, the main body member 101 can be a tubular member, or a structure formed by connecting a first bearing seat 1011, a second bearing seat 1012 and a second connecting rod 1013 as described below, or other suitable structures. Its main function is to carry each driving member and the needle winding assembly 106. In the embodiment shown below, two turntables are installed on the main body member 101, which are respectively marked as the first turntable 102 and the second turntable 103. In other embodiments of the present application, the main body member 101 can be installed with one turntable, or three, four or more turntables. The first driving member 105 is installed on the main body member 101. The first driving member 105 can drive the turntable to rotate by using a rotary motor, a cylinder multi-link mechanism, etc., and then drive the first connecting rod 104, the second turntable 103 and the first turntable 102 to rotate synchronously. For clarity, the rotation of the turntable is called "revolution". The needle 1061 of the needle winding assembly 106 can rotate around its axis to wind the tape, so as to wind the tape into an electric core. For clarity, the rotation of the needle 1061 around its axis is called "rotation". In addition to rotating, the needle winding assembly 106 can also revolve with the turntable. Exemplarily, taking only one turntable as an example, the second driving member 107 can be fixed on the turntable, and then the moving end of the second driving member 107 is connected to the needle winding assembly 106. In this way, as the second driving member 107 revolves with the turntable, it can drive the needle winding assembly 106 to revolve. The second driving member 107 can use power sources such as a rotary motor, a linear motor, and a cylinder to drive the needle winding assembly 106 to move along its axis. The axis of the needle winding assembly 106 is the same as the axis of the needle 1061. That is to say, the needle 1061 can not only rotate around its axis, but also move along its axis, and can also revolve with the turntable.

[0039] During operation, the needle winding assembly 106 first reaches the winding station. The needle 1061 rotates to wind the tape to form an electric core. After the winding is completed, the first driving member 105 drives the turntable to revolve, and the needle winding assembly 106 revolves with it to reach the finishing and taping station. The tape is cut and taped at the end. Then the first driving member 105 drives the turntable to revolve, and the needle winding assembly 106 revolves with it to reach the unloading station. After the electric core is removed from the needle 1061, the second driving member 107 drives the needle winding assembly 106 to move along its axis to retract the needle 1061. Then the first driving member 105 drives the turntable to revolve, and the needle winding assembly 106 revolves back to the winding station with the revolution. During the process of returning to the winding station, the second driving member 107 can drive the needle winding assembly 106 to move along its axis. When reaching the winding station, the needle 1061 fully extends to wind the tape. It can be seen that since both the second driving member 107 and the needle winding assembly 106 rotate with the turntable, the second driving member 107 can drive the needle winding assembly 106 to perform the plugging and unplugging action at any time, without waiting for the needle winding assembly 106 to reach the set position before acting, thus improving the winding efficiency of the electric core.

[0040] As Figure 4 and Figure 5 shown, in an embodiment of the present application, the bobbin assembly 106 includes, in addition to the bobbin 1061, a bobbin mounting base 1062, a connecting base 1063, and a first motor 1064. The bobbin mounting base 1062 is provided with a convex portion 10621, and the connecting base 1063 is provided with a concave portion 10631. The convex portion 10621 is inserted into the concave portion 10631 and fixedly connected. The connecting base 1063 is fixedly connected to the rotating shaft of the first motor 1064.

[0041] More specifically, the bobbin mounting base 1062 is used to mount the bobbin 1061. The convex portion 10621 of the bobbin mounting base 1062 can be cylindrical or polygonal prism-shaped. Correspondingly, the concave portion 10631 of the connecting base 1063 can be cylindrical or polygonal prism-shaped. The concave portion 10631 can be a groove or a shaft hole. In this way, the convex portion 10621 can be inserted into the concave portion 10631 and then the two are fixedly connected, so that the bobbin mounting base 1062 and the connecting base 1063 are connected together, and then the connecting base 1063 is fixedly connected to the rotating shaft of the first motor 1064. When the rotating shaft of the first motor 1064 rotates, it can drive the bobbin 1061 to rotate self - by means of the connecting base 1063 and the bobbin mounting base 1062. This structure facilitates the installation of the bobbin 1061, and directly driving the bobbin 1061 to rotate self - by the first motor 1064 can improve the winding accuracy.

[0042] As Figure 5 shown, in an embodiment of the present application, the convex portion 10621 is provided with a first through - hole 10622 that penetrates radially, and the concave portion 10631 is provided with a second through - hole 10632 that penetrates radially. The first through - hole 10622 communicates with the second through - hole 10632. The convex portion 10621 is provided with an axial threaded hole 10623, and the threaded hole 10623 communicates with the first through - hole 10622. A pin shaft passes through the first through - hole 10622 and the second through - hole 10632, and a locking member is in threaded cooperation with the threaded hole 10623 and abuts against the pin shaft.

[0043] More specifically, the first through hole 10622 penetrates the convex portion 10621 in the radial direction, and the second through hole 10632 penetrates the concave portion 10631 in the radial direction. When assembling the coiling needle assembly 106, first insert the convex portion 10621 of the coiling needle mounting seat 1062 into the concave portion 10631 of the connecting seat 1063 to connect the first through hole 10622 and the second through hole 10632. At this time, a pin shaft can be inserted to prevent the convex portion 10621 from disengaging from the concave portion 10631 and to prevent relative rotation between the coiling needle mounting seat 1062 and the connecting seat 1063. Next, a locking member is screwed into the threaded hole 10623. Since the threaded hole 10623 is in communication with the first through hole 10622, the top end of the locking member can abut against the pin shaft and lock the pin shaft to prevent the pin shaft from disengaging from the first through hole 10622 and the second through hole 10632. Finally, the connecting seat 1063 is fastened to the rotating shaft of the first motor 1064 through the locking member to complete the assembly of the coiling needle assembly 106. This assembly structure is simple and it is easy to ensure the coaxiality between the coiling needle 1061 and the rotating shaft of the first motor 1064.

[0044] As Figures 1 to 3As shown in the figure, in the embodiments of the present application, the turntable includes a first turntable 102 and a second turntable 103, which are respectively installed at both ends of the main body 101. The first turntable 102 and the second turntable 103 are connected by a first connecting rod 104. Therefore, when the first turntable 102 rotates, the second turntable 103 rotates synchronously with the first turntable 102 driven by the first connecting rod 104. The first driving member 105 can adopt a rotating motor, a cylinder multi-link mechanism, etc. to drive the first turntable 102 or the second turntable 103 to rotate, so that the first connecting rod 104, the second turntable 103 and the first turntable 102 rotate synchronously. For clarity, the rotation of the first turntable 102 is called "revolution". The winding needle 1061 of the winding needle assembly 106 can rotate around its axis to wind the tape, so as to wind the tape into an electric core. For clarity, the rotation of the winding needle around its axis is called "rotation". The winding needle assembly 106 is slidably matched with the first connecting rod 104. The winding needle assembly 106 can not only slide along the first connecting rod 104, but also rotate synchronously with the first turntable 102. In this embodiment, the first connecting rod 104 serves both as a connecting member between the first turntable 102 and the second turntable 103 and as a guide rod for the winding needle assembly 106. When the first turntable 102 revolves, the winding needle assembly 106 also revolves accordingly. Therefore, the winding needle assembly 106 can enter the winding station, the end sticking station and the blanking station. The second driving member 107 is installed on the first turntable 102 and rotates with the first turntable 102, or the second driving member 107 is installed on the second turntable 103 and rotates with the second turntable 103. The second driving member 107 can adopt power sources such as a rotating motor, a linear motor, a cylinder, etc. to drive the winding needle assembly 106 to slide along the first connecting rod 104. Therefore, the winding needle assembly 106 can move in the axial direction thereof. The second turntable 103 is provided with an avoidance portion 1031. The avoidance portion 1031 can be a round hole, a polygonal hole, or a notch formed on the second turntable 103, as long as it allows the winding needle 1061 of the winding needle assembly 106 to pass through.

[0045] During operation, the winding needle assembly 106 first reaches the winding station. The winding needle 1061 rotates itself to wind the material tape to form an electric core. After winding is completed, the first driving member 105 drives the first turntable 102 to revolve, and the winding needle assembly 106 revolves along with it to reach the end taping station. The material tape is cut and taped at the end. Then, the first driving member 105 drives the first turntable 102 to revolve, and the winding needle assembly 106 revolves along with it to reach the blanking station. After the electric core is removed from the winding needle 1061, the second driving member 107 drives the winding needle assembly 106 to move along its axis direction closer to the first turntable 102, so that the winding needle 1061 retracts. Then, the first driving member 105 drives the first turntable 102 to revolve, and the winding needle assembly 106 revolves along with it back to the winding station. During the process of returning to the winding station, the second driving member 107 can drive the winding needle assembly 106 to move along its axis direction away from the first turntable 102. When reaching the winding station, the winding needle 1061 fully extends to wind the material tape. It can be seen that since both the second driving member 107 and the winding needle assembly 106 rotate synchronously with the first turntable 102 and the second turntable 103, the second driving member 107 can drive the winding needle assembly 106 to perform the plugging and unplugging action at any time, without waiting for the winding needle assembly 106 to reach the set position before acting. Therefore, the winding efficiency of the electric core is improved.

[0046] In an embodiment of the present application, the second driving member 107 can be installed on the first turntable 102 or on the second turntable 103; the first driving member 105 can drive the first turntable 102 or drive the second turntable 103.

[0047] As Figure 1 shown, in an embodiment of the present application, the main body member 101 includes a first bearing seat 1011 and a second bearing seat 1012. The first bearing seat 1011 is rotationally matched with the first turntable 102, and the second bearing seat 1012 is rotationally matched with the second turntable 103. The first bearing seat 1011 and the second bearing seat 1012 are connected by a second connecting rod 1013.

[0048] More specifically, the inner ring of the first bearing seat 1011 can be in interference fit or welded and fixed with the first turntable 102, or a bearing is sleeved on the first turntable 102 and then installed on the first bearing seat 1011 so that the first turntable 102 can rotate. Similarly, the inner ring of the second bearing seat 1012 can be in interference fit or welded and fixed with the second turntable 103, or a bearing is sleeved on the second turntable 103 and then installed on the second bearing seat 1012 so that the second turntable 103 can rotate. One end of the second connecting rod 1013 is fixedly connected to the first bearing seat 1011, and the other end is fixedly connected to the second bearing seat 1012, so that the relative positions between the first bearing seat 1011 and the second bearing seat 1012 are fixed, forming a cage-like structure. This structure of the main body member 101 can achieve lightweight structure.

[0049] In other embodiments of the present application, the main body member 101 can also be a tubular member, and the first turntable 102 and the second turntable 103 are installed at both ends of the tubular member.

[0050] As Figure 1 shown, the needle inserting and extracting mechanism 100 of an embodiment of the present application further includes a connecting plate 113, and the connecting plate 113 is fixedly connected to the first bearing seat 1011 and the second bearing seat 1012. The first driving member 105 is fixedly connected to the connecting plate 113.

[0051] More specifically, after the connecting plate 113 is fixedly connected to the first bearing seat 1011 and the second bearing seat 1012, it can play a role in strengthening the structural stability of the main body member 101. At the same time, the first driving member 105 is fixedly connected to the connecting plate 113, and the weight of the first driving member 105 is shared by the first bearing seat 1011 and the second bearing seat 1012, so that the main body member 101 will not be deformed due to force.

[0052] In other embodiments of the present application, the first driving member 105 can also be directly fixedly connected to the first bearing seat 1011 or the second connecting rod 1013.

[0053] As Figure 1 shown, in an embodiment of the present application, the first driving member 105 includes a rotating motor, which is called the second motor for clarity. A first gear 108 is installed on the rotating shaft of the second motor, the first turntable 102 is fixedly connected to a second gear 109, and the first gear 108 meshes with the second gear 109.

[0054] More specifically, in the embodiment as Figure 1 shown, the gear transmission method is adopted to drive the first turntable 102. The second gear 109 can be fixedly connected to the first turntable 102 by means of bolt connection, welding, etc. The second gear 109 can also be integrally formed with the first turntable 102, and then gear teeth are machined on the second gear 109, which also belongs to the category of the fixed connection between the second gear 109 and the first turntable 102. After the first gear 108 meshes with the second gear 109, the rotating shaft of the second motor rotates, driving the first gear 108 to rotate, the first gear 108 drives the second gear 109 to rotate, and the second gear 109 drives the first turntable 102 to revolve. Correspondingly, the second turntable 103 and the needle assembly 106 also revolve accordingly.

[0055] In other embodiments of the present application, the first driving member 105 can also adopt a linear motion mechanism such as a cylinder, and then convert the linear motion of the cylinder piston rod into a rotational motion through a multi-link mechanism to push the first turntable 102 to rotate.

[0056] As Figure 2 and Figure 3As shown, in an embodiment of the present application, the second driving member 107 includes a rotating motor, which is referred to as the third motor for clarity. The third motor is mounted on the second gear 109. A rotatable lead screw 110 is installed between the first turntable 102 and the second turntable 103. The rotating shaft of the third motor is connected to the lead screw 110. The transmission nut 111 is in threaded engagement with the lead screw 110 and is fixedly connected to the needle winding assembly 106.

[0057] More specifically, in an embodiment of the present application, the needle winding assembly 106 is driven by a lead screw drive method. The lead screw 110 is rotatably installed between the first turntable 102 and the second turntable 103. The rotating shaft of the third motor can pass through the second gear 109 and the first turntable 102 to be connected to the lead screw 110. When the rotating shaft of the third motor rotates, it can drive the lead screw 110 to rotate. The transmission nut 111 is fixedly connected to the needle winding assembly 106, for example, fixedly connected to the housing of the first motor 1064. The transmission nut 111 is in threaded engagement with the lead screw 110. Therefore, when the lead screw 110 rotates, the transmission nut can move in a direction close to or away from the first turntable 102, thereby driving the needle winding assembly 106 to move along its axial direction.

[0058] In other embodiments of the present application, the second driving member 107 can also use a cylinder or a linear motor. For example, the piston rod of the cylinder can pass through the second gear 109 and the first turntable 102 and then be fixedly connected to the housing of the first motor 1064. The telescopic movement of the piston rod can drive the needle winding assembly 106 to move along its axis direction.

[0059] As Figure 3 shown, in an embodiment of the present application, the transmission nut 111 is fixedly connected to the transmission seat 112, and the transmission seat 112 is fixedly connected to the needle winding assembly 106.

[0060] More specifically, the transmission seat 112 can be a component fixedly connected to the first motor 1064. It can both be a connecting member connected to the transmission nut 111 and a sliding member slidably engaged with the first connecting rod 104. The transmission seat 112 itself can also be regarded as a part of the needle winding assembly 106. When the transmission nut 111 is driven by the lead screw 110, it drives the first motor 1064 to move through the transmission seat 112, and further drives the entire needle winding assembly 106 to move.

[0061] In the embodiments described above, the bobbin inserting and extracting mechanism 100 only includes one bobbin component 106 and one second driving member 107. In other embodiments of the present application, the bobbin inserting and extracting mechanism 100 includes a plurality of bobbin components 106 and a plurality of second driving members 107. Each second driving member 107 can drive one bobbin component 106 to move along its axis. The second turntable 103 is circumferentially provided with a plurality of avoiding portions 1031, and each bobbin component 106 can pass through one avoiding portion 1031.

[0062] More specifically, "a plurality of" means at least two, so that bobbin components can exist at multiple stations during the winding process of the battery cell. A plurality of avoiding portions 1031 are circumferentially formed on the second turntable 103, and one avoiding portion 1031 corresponds to one bobbin component 106, so that the bobbins 1061 of each bobbin component 106 can all perform inserting and extracting actions. One bobbin component 106 corresponds to one second driving member 107, and each second driving member 107 can drive one bobbin component 106 to move along its axis at any time to realize the inserting and extracting of the bobbin 1061. Taking three bobbin components 106 and three second driving members 107 as an example, during the production of the battery cell, one bobbin component 106 is at the winding station, and the bobbin 1061 winds the tape; one bobbin component 106 is at the end taping station, the tape is cut and end-taped; one bobbin component 106 is at the blanking station, and the battery cell is removed from the bobbin 1061. The first driving member 105 drives the first turntable 102 to rotate, and the bobbin component 106 at the winding station enters the end taping station; the bobbin component 106 at the end taping station enters the blanking station, and after the battery cell is blanked, the second driving member 107 drives the bobbin 1061 to retract; the bobbin component 106 at the blanking station enters the winding station, and during the process of entering the winding station, the second driving member 107 can drive the bobbin 1061 to extend and insert into the tape, and then the bobbin 1061 rotates self at the winding station to wind the battery cell. In this way, the winding efficiency of the battery cell can be improved.

[0063] According to the second aspect of the present application, a battery cell winding device is provided, including the bobbin inserting and extracting mechanism 100 as described in any one of the foregoing. The battery cell winding device transports the unwound pole pieces and diaphragm to the winding station, and the bobbin inserting and extracting mechanism 100 inserts and extracts the bobbin 1061 to wind the tape or avoid the tape. Since the second driving member 107 revolves with the first turntable 102 of the bobbin inserting and extracting mechanism 100, it can drive the bobbin component 106 to insert and extract the bobbin 1061 at any time as needed, with higher battery cell winding efficiency and higher automation degree.

[0064] In the above embodiments, the differences between the embodiments are mainly described. As long as the different optimized features between the embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, it will not be elaborated here.

[0065] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A needle inserting and extracting mechanism (100), characterized in that, Comprising: A main body member (101) on which a rotatable turntable is mounted; A first driving member (105) mounted on the main body member (101), the first driving member (105) being capable of driving the turntable (102) to rotate; A winding needle assembly (106), the winding needle (1061) of the winding needle assembly (106) being capable of rotating about its axis to wind a strip, and the winding needle assembly (106) being capable of rotating with the turntable; A second driving member (107) mounted on the turntable and rotating with the turntable, the second driving member (107) being capable of driving the winding needle assembly (106) to move in the axial direction thereof.

2. The needle winding inserting and extracting mechanism according to claim 1, characterized in that The winding needle assembly (106) further includes a winding needle mounting seat (1062), a connecting seat (1063) and a first motor (1064). The winding needle mounting seat (1062) is provided with a convex portion (10621), the connecting seat (1063) is provided with a concave portion (10631), the convex portion (10621) is inserted into the concave portion (10631) and fixedly connected, and the connecting seat (1063) is fixedly connected to the rotating shaft of the first motor (1064).

3. The needle winding inserting and extracting mechanism according to claim 2, wherein The convex portion (10621) is provided with a first through hole (10622) radially penetrating therethrough, the concave portion (10631) is provided with a second through hole (10632) radially penetrating therethrough, the first through hole (10622) communicates with the second through hole (10632), the convex portion (10621) is provided with an axial threaded hole (10623), the threaded hole (10623) communicates with the first through hole (10622), a pin shaft passes through the first through hole (10622) and the second through hole (10632), and a locking member is in threaded engagement with the threaded hole (10623) and abuts against the pin shaft.

4. The needle winding inserting and extracting mechanism according to claim 1, wherein The turntable includes a first turntable (102) and a second turntable (103) respectively mounted at both ends of the main body member (101), and the first turntable (102) and the second turntable (103) are connected by a first connecting rod (104) to rotate synchronously; The first driving member (105) is capable of driving the first turntable (102) or the second turntable (103) to rotate; The winding needle assembly (106) is in sliding fit with the first connecting rod (104) and rotates synchronously with the first turntable (102); The second driving member (107) is mounted on the first turntable (102) and rotates with the first turntable (102), or the second driving member (107) is mounted on the second turntable (103) and rotates with the second turntable (103); The second turntable (103) is provided with an avoidance portion (1031), and the winding needle (1061) of the winding needle assembly (106) can pass through the avoidance portion (1031).

5. The needle winding inserting and extracting mechanism according to claim 4, characterized in that, The main body member (101) includes a first bearing seat (1011) and a second bearing seat (1012). The first bearing seat (1011) is rotationally engaged with the first turntable (102), and the second bearing seat (1012) is rotationally engaged with the second turntable (103). The first bearing seat (1011) and the second bearing seat (1012) are connected by a second connecting rod (1013).

6. The needle winding inserting and extracting mechanism according to claim 5, wherein, It further includes a connecting plate (113). The connecting plate (113) is fixedly connected to the first bearing seat (1011) and the second bearing seat (1012), and the first driving member (105) is fixedly connected to the connecting plate (113).

7. The needle inserting and extracting mechanism for the bobbin according to claim 5, wherein The first driving member (105) includes a second motor. A first gear (108) is installed on the rotating shaft of the second motor. The first turntable (102) is fixedly connected to a second gear (109), and the first gear (108) meshes with the second gear (109).

8. The needle winding insertion and extraction mechanism according to claim 7, characterized in that, The second driving member (107) includes a third motor. The third motor is installed on the second gear (109). A rotatable lead screw (110) is installed between the first turntable (102) and the second turntable (103). The rotating shaft of the third motor is connected to the lead screw (110). A transmission nut (111) is in threaded cooperation with the lead screw (110) and is fixedly connected to the needle winding assembly (106).

9. The needle winding inserting and extracting mechanism according to claim 8, characterized in that, The transmission nut (111) is fixedly connected to a transmission seat (112), and the transmission seat (112) is fixedly connected to the needle winding assembly (106).

10. The needle winding inserting and extracting mechanism according to any one of claims 4 to 9, characterized in that, It includes a plurality of the needle winding assemblies (106) and a plurality of the second driving members (107). Each second driving member (107) can drive one needle winding assembly (106) to move along its axis direction. A plurality of avoiding portions (1031) are circumferentially arranged on the second turntable (103), and each needle winding assembly (106) can pass through one of the avoiding portions (1031).

11. A battery cell winding device, characterized in that, It includes the needle inserting and extracting mechanism (100) according to any one of claims 1 to 10.

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