CN216793766U - Winding mechanism - Google Patents

Abstract

This application is applicable to electric core coiling technology technical field, provides a winding mechanism, includes: a frame; the reversing assembly is rotatably arranged on the rack; the winding needle assembly is rotatably arranged on the reversing assembly and is used for clamping the diaphragm; the transmission assembly comprises a transmission shaft which is coaxial with the reversing assembly, a first gear which is arranged on the transmission shaft, a second gear which is meshed with the first gear, a third gear which is connected with the second gear and is coaxial with the second gear, and a fourth gear which is meshed with the third gear; the fourth gear is arranged on the winding needle assembly and is coaxial with the winding needle assembly. So set up, can subtract the short when rolling up the needle subassembly and rotate to another station under the drive of switching-over subassembly, the length of the pole piece that the needle subassembly once only pull out, and then make the length of the pole piece that the needle subassembly pulled out can be applicable to the pole piece length at the head and the tail both ends of short and small electric core, so, the winding mechanism of this embodiment can be applied to in the coiling work of short and small electric core.

Description

Winding mechanism

Technical Field

The application belongs to the technical field of battery cell winding processes, and particularly relates to a winding mechanism.

Background

In the field of cell winding, a winding mechanism generally comprises a winding needle assembly and a winding needle driving assembly, and when the winding mechanism works, the winding needle driving assembly drives the winding needle assembly to rotate, so that the winding needle assembly realizes the cell winding work; generally, in order to improve the winding efficiency, the number of the winding needle assemblies is at least two, and then the winding mechanism is further provided with a disk-shaped rotating frame which is used for rotating the winding needle assemblies to different stations.

In the traditional scheme, in order to enable the winding needle driving assembly to simultaneously realize the rotating work of at least two winding needle assemblies, the winding needle driving assembly needs to be in transmission connection with the at least two winding needle assemblies, so that the winding needle assemblies are far away from the central axis of a bogie; so, it is rotatory under the drive of steering wheel to roll up the needle subassembly to when rotatory to another station, can make to roll up the needle subassembly and once only pull out longer pole piece, and then make the pole piece length at the head and the tail both ends that can't adapt to short and small electric core by the pole piece that pulls out, thereby, winding mechanism among the traditional scheme is difficult to be applied to in the winding work of short and small electric core.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the embodiment of the application is as follows: the utility model provides a winding mechanism, aims at solving prior art, and winding mechanism is difficult to be applied to the technical problem in the winding work of short and small electric core.

In order to solve the technical problem, the embodiment of the application adopts the following technical scheme:

there is provided a winding mechanism comprising:

a frame;

the reversing assembly is rotatably arranged on the rack;

the winding needle assembly is rotatably arranged on the reversing assembly and is used for clamping the diaphragm;

the transmission assembly comprises a transmission shaft which is coaxial with the reversing assembly, a first gear which is arranged on the transmission shaft, a second gear which is meshed with the first gear, a third gear which is connected with the second gear and is coaxial with the second gear, and a fourth gear which is meshed with the third gear; the fourth gear is arranged on the winding needle assembly and is coaxial with the winding needle assembly.

In one embodiment, the needle winding assembly, the first gear, the second gear, the third gear and the fourth gear are all provided in three; the three first gears are distributed on the transmission shaft at intervals along the axial direction, each first gear is meshed with each second gear, each third gear is coaxially connected to each second gear, and each fourth gear is arranged on each needle winding assembly and is meshed with each third gear; the three needle rolling assemblies are uniformly distributed on the periphery of the central axis of the reversing assembly along the circumferential direction and are all located in a space formed by the third gear in a surrounding mode.

In one embodiment, the reversing assembly comprises a first rotating frame and a second rotating frame which are distributed at intervals along the axial direction and are fixed relatively; the winding needle assembly is rotatably arranged on the first rotating frame, and the transmission shaft is rotatably arranged on the second rotating frame and is coaxially arranged with the second rotating frame; the second rotating frame is provided with a rotatable connecting shaft in an axial penetrating mode, and the second gear and the third gear are arranged at two opposite ends of the connecting shaft respectively.

In one embodiment, the needle winding assembly comprises a winding needle for clamping a septum and a transmission sleeve sleeved on the winding needle, the transmission sleeve is rotatably arranged on the reversing assembly, and the fourth gear is arranged on the transmission sleeve; the transmission sleeve can drive the winding needle to rotate, and the winding needle can move relative to the transmission sleeve along the axial direction of the winding needle so as to advance out of the needle or retreat to retract the needle.

In one embodiment, the winding needle comprises a first winding needle flap and a second winding needle flap, and the transmission sleeve is sleeved outside the first winding needle flap and the second winding needle flap; the inner peripheral wall of the transmission sleeve is provided with first grooves and second grooves which are distributed at intervals, and the first grooves and the second grooves extend along the axial direction of the transmission sleeve; the first needle winding valve is provided with a first convex strip, the second needle winding valve is provided with a second convex strip, and the first convex strip and the second convex strip correspondingly slide and extend into the first groove and the second groove.

In one embodiment, the winding mechanism further comprises a needle connecting support fixed opposite to the reversing assembly and a needle connecting nozzle rotatably arranged on the needle connecting support, and the needle connecting nozzle is provided with a positioning groove towards one end of the winding needle assembly along the axial direction, and the positioning groove is used for positioning the winding needle assembly therein.

In one embodiment, the positioning groove comprises a first groove section and a second groove section, and the first groove section and the second groove section are sequentially distributed along the axial direction of the needle connecting nozzle towards the direction of the needle rolling assembly; the first groove section is internally provided with a cone, and the cone is integrally formed at one end of the needle connecting nozzle, which faces towards the needle winding assembly along the axial direction, and is arranged in a tapered manner towards the needle winding assembly.

In one embodiment, the inner circumferential wall of the second groove section is arranged to be gradually expanded towards the needle rolling assembly along the axial direction of the needle receiving nozzle.

In one embodiment, the needle connecting bracket comprises a first bracket, a needle connecting triangular head and a connecting piece connected between the first bracket and the needle connecting triangular head; the first support with connect the three angle heads of needle to follow the axial of rolling up the needle subassembly distributes in proper order, connect the needle mouth rotatably set up in connect the three angle heads of needle, it wears to locate to roll up the activity of needle subassembly first support is in order to be located in the constant head tank.

In one embodiment, the needle connecting bracket further comprises an intermediate triangular head arranged between the first bracket and the needle connecting triangular head, and the connecting piece comprises a first connecting section and a second connecting section, wherein the first connecting section is connected between the first bracket and the intermediate triangular head, and the second connecting section is connected between the intermediate triangular head and the needle connecting triangular head; the winding needle assembly sequentially penetrates through the first support and the middle triangular head to be positioned in the positioning groove.

The winding mechanism that this application embodiment provided's beneficial effect lies in: compared with the prior art, in the application, the transmission shaft of the transmission assembly and the reversing assembly are coaxially arranged, namely, the central axis of the transmission shaft is coincided with the central axis of the reversing assembly, and the second gear is meshed with the first gear on the transmission shaft, the third gear is connected with the second gear and is coaxially arranged with the second gear, the fourth gear on the winding needle component is meshed with the third gear, thus, when the winding needle assembly is arranged, the winding needle assembly can be close to the central axis of the reversing assembly as much as possible, therefore, the length of the pole piece drawn out by the winding needle assembly at one time when the winding needle assembly is driven by the reversing assembly to rotate to another station can be shortened, so that the length of the pole piece drawn by the winding needle component can be well suitable for the length of the pole pieces at the head end and the tail end of the short cell, therefore, the winding mechanism provided by the embodiment can be applied to the winding work of short cells.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a winding mechanism provided in an embodiment of the present application;

FIG. 2 is a first enlarged view of a portion of FIG. 1;

FIG. 3 is a perspective view of a winding pin assembly of the winding mechanism provided in FIG. 1;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a second enlarged view of a portion of FIG. 1;

FIG. 6 is a perspective view of the needle nozzle of the winding mechanism provided in FIG. 1;

FIG. 7 is an enlarged view of a portion of FIG. 3 at A;

fig. 8 is a perspective view of the needle connecting support of the winding mechanism provided in fig. 1.

Wherein, in the figures, the respective reference numerals:

1-a frame; 2-a commutation component; 21-a first rotating frame; 22-a second turret; 23-connecting column; 3-a needle winding assembly; 31-winding needle; 311-first winding needle flap; 3111-a first guide head; 312-a second rolling needle flap; 3121-a second guide head; 313-a first rib; 314-second ribs; 32-a drive sleeve; 3201-first groove; 3202-second groove; 33-a first limiting member; 34-a second stop; 4-a transmission assembly; 41-a transmission shaft; 42-a first gear; 43-a second gear; 44-a third gear; 45-fourth gear; 46-a connecting shaft; 5-needle connecting support; 51-a first bracket; 5101-a first keep-away hole; 52-needle connecting triangular head; 53-a connector; 5301-a second avoiding hole; 5302-a knife slot; 531 — first connecting section; 532-a second connection segment; 54-middle triangular head; 6-a needle connecting nozzle; 601-positioning grooves; 6011-a first trough section; 6012-a second trough section; a 61-cone; 7-a first bearing; 8-second bearing.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise, wherein two or more includes two.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

The following detailed description is made with reference to the accompanying drawings and examples:

referring to fig. 1 and fig. 2 together, a winding mechanism according to an embodiment of the present disclosure includes a frame 1, a reversing assembly 2, a winding pin assembly 3, and a transmission assembly 4.

The reversing component 2 is rotatably arranged on the frame 1; the winding needle assembly 3 is rotatably arranged on the reversing assembly 2 and is used for clamping the diaphragm. Wherein, the central axis of the reversing assembly 2 is parallel to the central axis of the winding needle assembly 3. It should be noted that the winding mechanism has a needle outlet station, a winding station and a needle retracting station, the reversing assembly 2 can rotate on the frame 1 along the central axis thereof, so that the needle winding assembly 3 on the reversing assembly 2 sequentially rotates to the needle outlet station, the winding station and the needle retracting station; the winding needle assembly 3 is used for clamping the diaphragm and can wind the diaphragm and the pole piece when rotating on the reversing assembly 2 along the central axis of the winding needle assembly, so that the winding forming of the battery cell is facilitated. Based on this, during operation, the needle winding assembly 3 rotates to the needle outlet station under the rotation of the reversing assembly 2, the needle winding assembly 3 advances to the needle outlet, and the diaphragm is clamped; then, the winding needle assembly 3 rotates to a winding station under the rotation of the reversing assembly 2, the transmission assembly 4 drives the winding needle assembly 3 to rotate under the driving of an external driver, so that the winding needle assembly 3 rotates around the central axis of the winding needle assembly relative to the reversing assembly 2, a diaphragm and a pole piece are wound, and the forming of a battery cell is realized; then, the winding needle assembly 3 rotates to a narrowing station under the rotation of the reversing assembly 2, and the winding needle assembly 3 retreats to narrow the needle so as to realize the blanking of the battery cell; continuously, the winding needle assembly 3 rotates to the needle outlet station … … under the rotation of the reversing assembly 2, and so on, so that the winding needle assembly 3 continuously performs the cell winding operation.

Wherein, optionally, the number of the winding needle assemblies 3 can be set to be at least two; after the reversing assembly 2 drives the winding needle assembly 3 to rotate, the at least two winding needle assemblies 3 can be respectively positioned at two different stations, so that the at least two winding needle assemblies 3 can simultaneously perform corresponding work, and the winding efficiency of the battery cell is improved.

The transmission assembly 4 includes a transmission shaft 41, a first gear 42, a second gear 43, a third gear 44, and a fourth gear 45. The drive shaft 41 is arranged coaxially with the reversing assembly 2, i.e. the centre axis of the drive shaft 41 coincides with the centre axis of the reversing assembly 2. The first gear 42 is disposed on the transmission shaft 41 and is disposed coaxially with the transmission shaft 41, so that the first gear 42 can rotate synchronously with the transmission shaft 41. The second gear 43 is meshed with the first gear 42. The third gear 44 is connected to the second gear 43 and is arranged coaxially with the second gear 43; it can be understood that the third gear 44 and the second gear 43 are fixed relatively, and the central axis of the third gear 44 is coincident with the central axis of the second gear 43, then the third gear 44 can be driven by the second gear 43 to rotate coaxially and synchronously with the second gear 43. The fourth gear 45 is meshed with the third gear 44, and the fourth gear 45 is arranged on the needle winding assembly 3 and is coaxial with the needle winding assembly 3; it can be understood that the fourth gear 45 is fixed relative to the winding needle assembly 3, and the central axis of the fourth gear 45 coincides with the neutral axis of the winding needle assembly 3, so that the winding needle assembly 3 can be driven by the fourth gear 45 to rotate coaxially and synchronously with the fourth gear 45. Based on this, the transmission assembly 4 can be connected to the external driver through the transmission shaft 41, and the power output by the external driver is transmitted to the winding needle assembly 3 through the transmission shaft 41, the first gear 42, the second gear 43, the third gear 44 and the fourth gear 45 in sequence, so that the winding needle assembly 3 rotates on the reversing assembly 2 along the central axis thereof under the transmission action of the transmission assembly 4.

It should be noted here that when the winding needle assemblies 3 are provided as at least two, the pole pieces are generally wound around the peripheries of all the winding needle assemblies 3 before being wound into a cell, so that when the winding needle assemblies 3 rotate to another station under the rotation of the reversing assembly 2, the winding needle assemblies 3 pull the pole pieces to the station, that is, the length of the pole pieces pulled out at this time is at least the length of an arc line segment between two adjacent winding needle assemblies 3 of a circle formed by taking a point where the central axis of the reversing assembly 2 is located as the center of the circle.

In traditional winder, the coil needle subassembly 3 is far away from the central axis of bogie, and then when coil needle subassembly 3 sets up to at least two, at least two coil needle subassemblies 3 are comparatively diffused, like this, the length of the circle of using the point that the central axis of reversing frame is located to form as the centre of a circle arc line section between two adjacent coil needle subassemblies 3 also increases thereupon for coil needle subassembly 3 pulls out when rotating to next station pole piece length also increases thereupon. Therefore, on one hand, after the pole piece is cut off, the length of the pole piece hung outside the winding needle assembly 3 is large, so that the pole piece is difficult to position, especially when the winding mechanism is applied to winding a short cell, the width of the pole piece needs to be correspondingly applied to winding the short cell, and the width of the pole piece needs to be set to be small based on the requirement of the short cell, so that the problem that the pole piece is difficult to position is greatly aggravated, the pole piece is difficult to avoid the risk of poor tension and insufficient tension, and the quality of the wound cell is also influenced; on the other hand, the short cell has a small requirement for the length of the pole piece, and thus a part of the pole piece is easily wasted after the pole is cut off. The short and small battery cell in the embodiment refers to a battery cell with a shorter axial length and a smaller diameter, and correspondingly, the first length of the pole piece used by the battery cell is shorter, and the width dimension is also smaller.

Therefore, in the embodiment of the present application, the transmission shaft 41 of the transmission assembly 4 is coaxially disposed with the reversing assembly 2, such that the central axis of the transmission shaft 41 coincides with the central axis of the reversing assembly 2, the second gear 43 is meshed with the first gear 42 on the transmission shaft 41, the third gear 44 is connected to the second gear 43 and is coaxially disposed with the second gear 43, the fourth gear 45 on the winding needle assembly 3 is meshed with the third gear 44, such that, based on the central axis of the transmission shaft 41 coinciding with the central axis of the reversing assembly 2, the second gear 43 meshed with the first gear 42 on the transmission shaft 41 is far from the central axis of the reversing assembly 2, and correspondingly, the third gear 44 coaxially connected with the second gear 43 is also far from the central axis of the reversing assembly 2, and since the winding needle assembly 3 is meshed with the third gear 44 through the fourth gear 45, through the meshing of the first gear 42 and the second gear 43, The coaxial setting of second gear 43 and third gear 44, the meshing relation of third gear 44 and fourth gear 45, when setting up book needle subassembly 3, can make book needle subassembly 3 be close to the central axis of switching-over subassembly 2 as far as possible, then when book needle subassembly 3 sets up to at least two, at least two book needle subassemblies 3 can draw close more towards the central axis of switching-over subassembly 2, so can shorten when book needle subassembly 3 rotates to another station under the drive of switching-over subassembly 2, the length of the pole piece that book needle subassembly 3 once only pull out, and then make the pole piece length that the length of the pole piece that book needle subassembly 3 pulled out can be fine be applicable to the pole piece length at the head and the tail both ends of short and small electricity core, so, the winding mechanism that this embodiment provided can be applied to in the winding work of short and small electricity core.

In one embodiment, referring to fig. 1 and 2, the needle winding assembly 3, the first gear 42, the second gear 43, the third gear 44 and the fourth gear 45 are all three. The three first gears 42 are spaced apart from each other on the transmission shaft 41 in the axial direction of the drive shaft, each first gear 42 is engaged with each second gear 43, each third gear 44 is coaxially connected to each second gear 43, and each fourth gear 45 is provided on each needle winding assembly 3 and is engaged with each third gear 44. Three book needle subassembly 3 along circumferencial direction evenly distributed in the central axis periphery of switching-over subassembly 2, can understand, three book needle subassembly 3 uses the central axis of switching-over subassembly 2 as the central axis evenly distributed, and three book needle subassembly 3 all is located the space that three third gear 44 encloses and closes the formation. So set up, when transmission shaft 41 is rotatory under the drive of external drive ware, the last three first gear 42 of transmission shaft 41 all with transmission shaft 41 synchronous revolution to can realize three rotation of rolling up needle subassembly 3 simultaneously, do benefit to the coiling efficiency that improves electric core.

By adopting the technical scheme, the three winding needle assemblies 3 can be respectively positioned at three different stations, so that the three winding needle assemblies 3 can simultaneously perform corresponding work, repeated continuous operation of the three winding needle assemblies 3 among the three stations of the needle outlet station, the winding station and the needle retracting station is realized, and the winding efficiency of the battery cell is improved; and, three book needle subassembly 3 is located the space that three third gear 44 encloses to close the formation for three book needle subassembly 3 is drawn close towards the central axis of switching-over subassembly 2 and is set up, does benefit to and reduces the length of the pole piece that book needle subassembly 3 pulls out when rotating to next station, makes winding mechanism can be applied to the coiling work of short and small electric core, and helps improving the location of pole piece, with the quality of the electric core after improving the coiling shaping.

In one embodiment, referring to fig. 1 and fig. 2, the reversing assembly 2 includes a first rotating frame 21 and a second rotating frame 22, where the first rotating frame 21 and the second rotating frame 22 are distributed at intervals along an axial direction of the reversing assembly 2 and are relatively fixed, so that the first rotating frame 21 and the second rotating frame 22 can rotate synchronously; wherein, the central axis of the first rotating frame 21 and the central axis of the second rotating frame 22 are overlapped, and the central axes of the uniform winding needle assemblies 3 are parallel.

The winding needle assembly 3 is rotatably arranged on the first rotating frame 21; the transmission shaft 41 is rotatably disposed on the second rotating frame 22 and is disposed coaxially with the second rotating frame 22, that is, the central axis of the transmission shaft 41 is disposed to coincide with the central axis of the second rotating frame 22. The second rotating frame 22 is axially provided with a rotatable connecting shaft 46, and the second gear 43 and the third gear 44 are respectively arranged at two opposite ends of the connecting shaft 46; it is understood that the connecting shaft 46 is rotatably disposed on the second rotating frame 22, the connecting shaft 46 penetrates the second rotating frame 22 in the axial direction of the second rotating frame 22, the central axis of the connecting shaft 46 is parallel to the central axis of the second rotating frame 22, and the second gear 43 and the third gear 44 are respectively disposed at two axial ends of the connecting shaft 46, the second gear 43 and the third gear 44 are respectively disposed at two opposite sides of the second rotating frame 22 in the axial direction, and the third gear 44 is located between the first rotating frame 21 and the second rotating frame 22.

Based on the arrangement, the transmission shaft 41 is rotatably arranged on the second rotating frame 22, so that the second rotating frame 22 can support the transmission shaft 41, and the stable power transmission work of the transmission shaft 41 is facilitated; and, the connecting shaft 46 is made to penetrate the second rotating frame 22 along the axial direction thereof, so that the second rotating frame 22 can also support the connecting shaft 46, and since the second gear 43 and the third gear 44 are respectively arranged at the two axial ends of the connecting shaft 46, this enables the second rotating frame 22 to support the second gear 43 and the third gear 44, which is beneficial to improving the stability of the first gear 42 transmitting power to the second gear 43, and is beneficial to improving the stability of the second gear 43 transmitting power to the third gear 44, and is beneficial to improving the stability of the third gear 44 transmitting power to the fourth gear 45, and, fourth gear 45 sets up on rolling up needle subassembly 3, so, has improved the stability of power loop through transmission shaft 41, first gear 42, second gear 43, third gear 44, fourth gear 45 and the transmission of rolling up needle subassembly 3 to do benefit to and improve the electric core of rolling up needle subassembly 3 and roll up the effect.

It should be noted that the second gear 43 and the third gear 44 are respectively disposed on two opposite sides of the second rotating frame 22 in the axial direction, and the third gear 44 is located between the first rotating frame 21 and the second rotating frame 22, so that the second gear 43 is located on a side of the second rotating frame 22 facing away from the first rotating frame 21 in the axial direction; the arrangement of the second gear 43 meshed with the first gear 42 on the transmission shaft 41 allows the transmission shaft 41 to be arranged on the side of the second rotating frame 22 facing away from the first rotating frame 21 in the axial direction, which facilitates the layout of the transmission shaft 41.

It should be further noted that, when the first rotating frame 21 needs to rotate the needle winding assembly 3 to the next station, the second rotating frame 22 is driven by the first rotating frame 21 to rotate synchronously with the first rotating frame 21, so that the second gear 43, the third gear 44, the fourth gear 45 and the connecting shaft 46 of the transmission assembly 4 are driven by the first rotating frame 21 and the second rotating frame 22 to rotate, and thus when the needle winding assembly 3 rotates to the next station, the transmission assembly 4 can still transmit power to the needle winding assembly 3, so as to realize the winding operation of the needle winding assembly 3.

Optionally, the reversing assembly 2 further includes a connecting column 23, and the connecting column 23 is connected between the second rotating frame 22 and the third rotating frame to realize relative fixation of the second rotating frame 22 and the third rotating frame.

In one embodiment, referring to fig. 2 and 3, the needle winding assembly 3 includes a winding needle 31 for holding the septum and a transmission sleeve 32 sleeved on the winding needle 31, the transmission sleeve 32 is rotatably disposed on the reversing assembly 2, and the fourth gear 45 is disposed on the transmission sleeve 32; transmission sleeve 32 can drive and roll up needle 31 and rotate, and roll up needle 31 and can move along its axial relative transmission sleeve 32 to advance out of the needle or retreat the narrowing. The arrangement is such that the winding needle 31 and the transmission sleeve 32 are coaxially arranged, relatively fixed along the circumferential direction and relatively movably arranged along the axial direction; when the needle winding assembly 3 rotates to the needle outlet station, the winding needle 31 axially advances relative to the transmission sleeve 32 to discharge the needle and clamp the diaphragm; when the winding needle assembly 3 rotates to the winding station, the transmission shaft 41 sequentially transmits power to the fourth gear 45, and the transmission sleeve 32 is driven by the fourth gear 45 to drive the winding needle 31 to rotate so as to wind the pole piece and the diaphragm, thereby realizing winding molding of the battery cell; when the winding needle assembly 3 rotates to the narrowing station, the winding needle assembly 3 retreats relative to the transmission sleeve 32 along the axial direction to narrow the needle, so that the battery cell is blanked.

Optionally, the transmission sleeve 32 is sleeved with a first bearing 7, and the first bearing 7 is fixed on the reversing assembly 2.

In one embodiment, referring to fig. 2-4, needle 31 includes a first needle winding flap 311 and a second needle winding flap 312, and transmission sleeve 32 is sleeved outside first needle winding flap 311 and second needle winding flap 312; wherein first rolling needle flap 311 and second rolling needle flap 312 are used to clamp the septum together. The inner circumferential wall of the transmission sleeve 32 is provided with first grooves 3201 and second grooves 3202 which are circumferentially distributed at intervals, and the first grooves 3201 and the second grooves 3202 are both arranged along the axial extension of the transmission sleeve 32; the first winding needle flap 311 is provided with a first protruding strip 313, the second winding needle flap 312 is provided with a second protruding strip 314, and the first protruding strip 313 and the second protruding strip 314 correspondingly slide and extend into the first groove 3201 and the second groove 3202. With such arrangement, when the transmission sleeve 32 is driven by the fourth gear 45 to rotate, the transmission sleeve 32 drives the first needle winding flap 311 to rotate through the first protruding strip 313, and drives the second needle winding flap 312 to rotate through the second protruding strip 314, so that the transmission sleeve 32 drives the first needle winding flap 311 and the second needle winding flap 312 to rotate simultaneously, thereby realizing the winding work; the positioning and guiding of the first protruding strip 313 and the first concave groove 3201 and the positioning and guiding of the second protruding strip 314 and the second concave groove 3202 can improve the reliability of the axial movement of the winding needle 31. Moreover, the first rib 313 can slide in the first groove 3201 along the axial direction of the transmission sleeve 32, so that the first winding lobe 311 can move relative to the transmission sleeve 32 along the axial direction of the transmission sleeve 32 to advance or retract, and correspondingly, the second rib 314 can slide in the second groove 3202 along the axial direction of the transmission sleeve 32, so that the second winding lobe 312 can move relative to the transmission sleeve 32 along the axial direction of the transmission sleeve 32 to advance or retract. Therefore, by adopting the above-described configuration, the rotation of the winding needle 31, the forward needle ejection, and the backward needle ejection can be realized.

When the winding needle 31 advances out of the needle, the first winding needle flap 311 and the second winding needle flap 312 can advance out of the needle in sequence, so that the first winding needle flap 311 and the second winding needle flap 312 can directly clamp the septum after the needle enters and exits in front.

Optionally, the winding pin 31 further includes a first limiting member 33 and a second limiting member 34, the first limiting member 33 is disposed at one end of the first winding pin lobe 311 in the axial direction, the second limiting member 34 is disposed at one end of the second winding pin lobe 312 in the axial direction, and both the first winding pin lobe 311 and the second winding pin lobe 312 penetrate through the reversing assembly 2 in the axial direction of the winding pin 31; the first limiting member 33 and the second limiting member 34 are disposed between the first rotating frame 21 and the second rotating frame 22.

Correspondingly, the needle retracting mechanism of the winding mechanism comprises two needle withdrawing claws and a needle withdrawing follower wheel, wherein the two needle withdrawing claws can be separately and independently controlled, and the needle withdrawing follower wheel and the needle withdrawing claws are also separately and independently controlled. During operation, when the winding needle assembly 3 rotates to the narrowing station, the two needle withdrawing claws respectively move to one side of the first limiting part 33 and the second limiting part 34 along the axial direction, and the two needle withdrawing claws respectively pull the first limiting part 33 and the second limiting part 34 to withdraw, so that the first winding needle flap 311 and the second winding needle flap 312 realize withdrawing and narrowing, and blanking of a battery cell is realized; then, one of the needle withdrawing claws pushes against the first limiting member 33 to realize the forward needle withdrawing of the first needle winding flap 311, and at this time, the septum can be lapped on one side of the first needle winding flap 311 facing the second needle winding flap 312; then, when the needle winding assembly 3 rotates to the needle discharging station, the needle discharging follower wheel pushes against the second stopper 34 to realize forward needle discharging of the second needle winding flap 312, so that the second needle winding flap 312 and the first needle winding flap 311 clamp the septum lapped on one side of the first needle winding flap 311.

In one embodiment, referring to fig. 5 and fig. 6, the winding mechanism further includes a needle holder 5 and a needle nozzle 6, the needle holder 5 is fixed to the reversing assembly 2, and the needle nozzle 6 is rotatably disposed on the needle holder 5; the needle receiving nozzle 6 is provided with a positioning groove 601 facing one end of the needle rolling assembly 3 along the axial direction, and the positioning groove 601 is used for positioning the needle rolling assembly 3 therein. So set up, make after the needle is gone forward out to the needle along the axial when rolling up needle subassembly 3, it stretches out outside switching-over subassembly 2 to roll up needle subassembly 3, and stretch into in the constant head tank 601 of needle joint mouth 6, in order to form the location with needle joint mouth 6, so realize rolling up the location of needle subassembly 3, then when rolling up needle subassembly 3 and rotatory around its central axis under the power take off of drive assembly 4, it is rotatory with needle joint mouth 6 synchronous to roll up needle subassembly 3, realize the coiling work of electric core, the orientation strength when rolling up needle subassembly 3 and coiling can be improved like this, make the coiling subassembly can stably coil, do benefit to the quality of the electric core after the improvement coiling shaping.

In a specific embodiment, the needle connecting support 5 is arranged on one side of the reversing assembly 2, which faces away from the transmission shaft 41 along the axial direction, and the needle connecting support 5 is connected with the reversing assembly 2, so that the needle connecting support 5 can synchronously rotate under the rotation of the reversing assembly 2. Connect needle mouth 6 to rotatably set up on connecing needle support 5, and along axial orientation switching-over subassembly 2, it rotatably sets up on switching-over subassembly 2 to roll up needle subassembly 3, and stretch out switching-over subassembly 2 along the axial outside one side that is provided with and connects needle support 5, so make connect needle mouth 6 to roll up needle subassembly 3 setting along the axial orientation, and then make and roll up needle subassembly 3 and can stretch out switching-over subassembly 2 along the axial after advancing the needle outside, and stretch into connect needle mouth 6's constant head tank 601, with being positioned in constant head tank 601. The central axis of the needle receiving nozzle 6 is parallel to the central axis of the reversing assembly 2 and is coincident with the central axis of the corresponding needle rolling assembly 3.

Optionally, a second bearing 8 is sleeved outside the needle connecting nozzle 6, and the second bearing 8 is fixed on the needle connecting support 5.

In an embodiment, referring to fig. 5 and fig. 6 together, the positioning groove 601 includes a first groove section 6011 and a second groove section 6012, the first groove section 6011 and the second groove section 6012 are disposed at one end of the needle nozzle 6 facing the needle winding assembly 3 along the axial direction, and are sequentially distributed along the axial direction of the needle nozzle 6 facing the needle winding assembly 3, and the first groove section 6011 and the second groove section 6012 are communicated; a cone 61 is arranged in the first groove section 6011, and the cone 61 is integrally formed at one end of the needle connecting nozzle 6 facing the needle winding assembly 3 along the axial direction and arranged in a tapered manner facing the needle winding assembly 3. The arrangement is that after the needle winding assembly 3 advances out of the needle along the axial direction, the needle winding assembly 3 extends out of the reversing assembly 2 and sequentially extends into the first groove section 6011 and the second groove section 6012 of the needle receiving nozzle 6 to be matched with the cone 61, so that the needle winding assembly 3 is positioned through the cone 61 in the second groove section 6012, and the position of the needle winding assembly 3 during winding is ensured; and, cone 61 integrated into one piece is in the one end of connecing needle mouth 6 to roll up needle subassembly 3 along the axial, compares in the cone 61 that the components of a whole that can function independently set up for cone 61 has bigger structural strength, does benefit to the location effect of guaranteeing to roll up needle subassembly 3, thereby helps guaranteeing to roll up the coiling effect of needle subassembly 3.

In this embodiment, cone 61 reduces the setting towards book needle subassembly 3 along the axial that connects needle mouth 6 for the periphery wall of cone 61 can realize the direction removal to book needle subassembly 3, then rolls up the periphery wall slip of needle subassembly 3 relative cone 61 better, thereby forms location fit with cone 61, so does benefit to the improvement to the location effect of rolling up needle subassembly 3. Moreover, the cone 61 and the inner peripheral wall of the first groove section 6011 are distributed at intervals, so that the head of the needle rolling assembly 3 can be positioned between the inner peripheral wall of the first groove section 6011 and the outer peripheral wall of the cone 61, which is beneficial to improving the positioning effect of the needle rolling assembly 3.

In this embodiment, when the first winding needle flap 311 and the second winding needle flap 312 of the winding needle assembly 3 are guided into the second groove section 6012, the first winding needle flap 311 and the second winding needle flap 312 are respectively located at two sides of the cone 61, the cone 61 can realize the expanding setting of the first winding needle flap 311 and the second winding needle flap 312, and after the electrical core is wound and molded, the central hole of the electrical core is the diameter of the winding needle 31 formed after the first winding needle flap 311 and the second winding needle flap 312 are expanded; in this way, when winding needle assembly 3 retracts, first winding needle flap 311 and second winding needle flap 312 leave cone 61, so that first winding needle flap 311 and second winding needle flap 312 can move in opposite directions to make winding needle 31 contract, thus facilitating blanking of battery core from winding needle 31.

Alternatively, the cone 61 is formed on the needle nozzle 6 by engraving, injection molding, or the like.

In a specific embodiment, referring to fig. 6 and 7 together, the first winding needle flap 311 has a first guiding head 3111 at an end of the winding needle 31 facing the needle joint nozzle 6 in the axial direction, the second winding needle flap 312 has a second guiding head 3121 at an end of the winding needle 31 facing the needle joint nozzle 6 in the axial direction, the first guiding head 3111 and the second guiding head 3121 are spaced apart, and opposite inner side walls of the first guiding head 3111 and the second guiding head 3121 are gradually enlarged toward the needle joint nozzle 6 in the axial direction, so that the first guiding head 3111 and the second guiding head 3121 can be better guided between the inner peripheral wall of the first groove section 6011 and the outer peripheral wall of the cone 61, which is favorable for improving the guiding and positioning effects of the winding needle assembly 3.

In one embodiment, referring to fig. 6, the inner peripheral wall of the second groove section 6012 is configured to be gradually enlarged toward the needle winding assembly 3 along the axial direction of the needle nozzle 6, and it can be understood that the inner peripheral wall of the second groove section 6012 is configured as a conical surface with an inner diameter gradually increased toward the needle winding assembly 3 along the axial direction. So configured, it helps to guide the winding needle assembly 3 to slide into the second groove section 6012 to form a positioning fit with the cone 61, which helps to improve the positioning effect of the winding needle assembly 3.

In one embodiment, referring to fig. 5 and 8, the needle connecting bracket 5 includes a first bracket 51, a needle connecting triangular head 52, and a connecting member 53 connected between the first bracket 51 and the needle connecting triangular head 52; wherein the first bracket 51 is fixed relative to the reversing assembly 2. First support 51 and connect needle triangle head 52 to distribute in proper order along the axial of rolling up needle subassembly 3, connect needle mouth 6 to rotatably set up in connecting needle triangle head 52, roll up needle subassembly 3 activity and wear to locate first support 51 to be located the constant head tank 601. So set up for after rolling up needle subassembly 3 and passing switching-over subassembly 2 and first support 51, can be positioned in needle receiving mouth 6, guarantee to roll up the location effect of needle subassembly 3.

In a specific embodiment, the first support 51 and the needle connecting triangular head 52 are sequentially distributed along the direction in which the needle winding assembly 3 extends out of the reversing assembly 2, so that the needle winding assembly 3 extends out of the reversing assembly 2 and can be positioned at the needle connecting nozzle 6.

The first support 51 is provided with a first avoiding hole 5101, the first avoiding hole 5101 penetrates through the first support 51 along the axial direction of the needle rolling assembly 3, and the needle rolling assembly 3 penetrates through the first avoiding hole 5101 to be positioned on the needle receiving nozzle 6.

Optionally, the connecting piece 53 is provided with a knife groove 5302, and the guide groove supplies a knife to extend into the knife groove 5302 when the external knife cuts the diaphragm, so that the cutting work of the knife on the diaphragm is facilitated.

Optionally, the outer diameter of the needle connecting triangular head 52 is smaller than the outer diameter of the first support 51, so that on one hand, the layout of the winding mechanism is facilitated to be optimized, on the other hand, the weight reduction of the needle connecting support 5 can be realized, and the working flexibility of the winding mechanism is facilitated.

In one embodiment, referring to fig. 5 and 8, the needle connecting bracket 5 further includes an intermediate triangular head 54 disposed between the first bracket 51 and the needle connecting triangular head 52, the connecting member 53 includes a first connecting section 531 and a second connecting section 532, the first connecting section 531 is connected between the first bracket 51 and the intermediate triangular head 54, and the second connecting section 532 is connected between the intermediate triangular head 54 and the needle connecting triangular head 52; the needle winding assembly 3 is sequentially arranged through the first bracket 51 and the middle triangular head 54 to be positioned in the positioning groove 601. So set up for after rolling up needle subassembly 3 and passing first support 51 and middle triangle head 54 in proper order, stretch into the constant head tank 601 that connects needle mouth 6 again, then first support 51 and middle triangle head 54 can realize the supporting role to rolling up needle subassembly 3, help further guaranteeing the support positioning effect to rolling up needle subassembly 3 like this, thereby do benefit to the positioning effect who improves and roll up needle subassembly 3, thereby do benefit to the coiling effect that improves and roll up needle subassembly 3.

The middle triangular head 54 is provided with a second avoiding hole 5301, the second avoiding hole 5301 penetrates through the middle triangular head 54 along the axial direction of the winding needle assembly 3, and the winding needle assembly 3 sequentially penetrates through the first avoiding hole 5101 and the second avoiding hole 5301 to be positioned on the needle receiving nozzle 6.

The middle triangular head 54 and the needle receiving triangular head 52 are both arranged in a triangular head structure, so that the weight reduction of the needle receiving support 5 is facilitated, and the working flexibility of the winding mechanism is facilitated to be improved.

Optionally, the outer diameter of the middle triangular head 54 is smaller than the outer diameter of the first support 51, which is beneficial to optimizing the layout of the winding mechanism on one hand, and can reduce the weight of the needle connecting support 5 on the other hand, which is beneficial to improving the working flexibility of the winding mechanism.

Optionally, the first support 51, the needle connecting triangular head 52, the middle triangular head 54, the first connecting section 531 and the second connecting section 532 are integrally formed, so that the structural strength of the needle connecting support 5 is improved, the supporting effect on the winding needle assembly 3 is ensured, and the positioning effect on the winding needle assembly 3 is ensured.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A winding mechanism, comprising:

a frame (1);

the reversing assembly (2) is rotatably arranged on the rack (1);

the winding needle assembly (3) is rotatably arranged on the reversing assembly (2) and is used for clamping the diaphragm;

the transmission assembly (4) comprises a transmission shaft (41) which is coaxially arranged with the reversing assembly (2), a first gear (42) which is arranged on the transmission shaft (41), a second gear (43) which is meshed with the first gear (42), a third gear (44) which is connected with the second gear (43) and is coaxially arranged with the second gear (43), and a fourth gear (45) which is meshed with the third gear (44); the fourth gear (45) is arranged on the winding needle assembly (3) and is coaxial with the winding needle assembly (3).

2. Winding mechanism according to claim 1, wherein the winding needle assembly (3), the first gear (42), the second gear (43), the third gear (44) and the fourth gear (45) are all provided in three; the three first gears (42) are distributed on the transmission shaft (41) at intervals along the axial direction, each first gear (42) is meshed with each second gear (43), each third gear (44) is coaxially connected to each second gear (43), each fourth gear (45) is arranged on each needle winding assembly (3) and is meshed with each third gear (44); the three needle winding assemblies (3) are uniformly distributed on the periphery of the central axis of the reversing assembly (2) along the circumferential direction and are all located in a space formed by the three third gears (44) in a surrounding mode.

3. Winding mechanism according to claim 1, wherein the reversing assembly (2) comprises a first rotating carriage (21) and a second rotating carriage (22) axially spaced and relatively fixed; the needle winding assembly (3) is rotatably arranged on the first rotating frame (21), and the transmission shaft (41) is rotatably arranged on the second rotating frame (22) and is coaxially arranged with the second rotating frame (22); the second rotating frame (22) is provided with a rotatable connecting shaft (46) in an axial direction in a penetrating mode, and the second gear (43) and the third gear (44) are respectively arranged at two opposite ends of the connecting shaft (46).

4. The winding mechanism according to claim 1, characterized in that the winding needle assembly (3) comprises a winding needle (31) for clamping the septum and a transmission sleeve (32) sleeved on the winding needle (31), the transmission sleeve (32) is rotatably arranged on the reversing assembly (2), and the fourth gear (45) is arranged on the transmission sleeve (32); the transmission sleeve (32) can drive the winding needle (31) to rotate, and the winding needle (31) can move relative to the transmission sleeve (32) along the axial direction of the winding needle to advance and withdraw the needle or retreat and withdraw the needle.

5. Winding mechanism according to claim 4, wherein the winding needle (31) comprises a first winding needle flap (311) and a second winding needle flap (312), the transmission sleeve (32) being sleeved outside the first winding needle flap (311) and the second winding needle flap (312); the inner peripheral wall of the transmission sleeve (32) is provided with first grooves (3201) and second grooves (3202) which are distributed at intervals, and the first grooves (3201) and the second grooves (3202) extend along the axial direction of the transmission sleeve (32); the first needle winding flap (311) is provided with a first protruding strip (313), the second needle winding flap (312) is provided with a second protruding strip (314), and the first protruding strip (313) and the second protruding strip (314) correspondingly slide and extend into the first groove (3201) and the second groove (3202).

6. Winding mechanism according to any of claims 1 to 5, further comprising a needle holder (5) fixed relative to the reversing assembly (2) and a needle nozzle (6) rotatably arranged on the needle holder (5), wherein the needle nozzle (6) is provided with a positioning groove (601) axially facing one end of the needle winding assembly (3), and the positioning groove (601) is used for positioning the needle winding assembly (3) therein.

7. The winding mechanism according to claim 6, characterized in that the positioning slot (601) comprises a first slot segment (6011) and a second slot segment (6012), and the first slot segment (6011) and the second slot segment (6012) are sequentially distributed in the axial direction of the needle connecting nozzle (6) toward the direction of the winding needle assembly (3); a cone (61) is arranged in the first groove section (6011), and the cone (61) is integrally formed at one end, facing the needle rolling assembly (3), of the needle receiving nozzle (6) along the axial direction and arranged in a reducing mode facing the needle rolling assembly (3).

8. Winding mechanism according to claim 7, wherein the inner circumferential wall of the second groove section (6012) is arranged diverging towards the needle winding assembly (3) in the axial direction of the needle nozzle (6).

9. Winding mechanism according to claim 6, wherein the needle holder (5) comprises a first holder (51), a needle cam (52) and a connecting piece (53) connected between the first holder (51) and the needle cam (52); first support (51) with connect needle triangle head (52) to follow the axial of rolling up needle subassembly (3) distributes in proper order, connect needle mouth (6) rotatably set up in connect needle triangle head (52), it wears to locate to roll up needle subassembly (3) activity first support (51) is in order to be located in constant head tank (601).

10. Winding mechanism according to claim 9, wherein the needle-receiving carrier (5) further comprises an intermediate triangular head (54) arranged between the first carrier (51) and the needle-receiving triangular head (52), the connecting element (53) comprising a first connecting section (531) and a second connecting section (532), the first connecting section (531) being connected between the first carrier (51) and the intermediate triangular head (54), the second connecting section (532) being connected between the intermediate triangular head (54) and the needle-receiving triangular head (52); the needle rolling assembly (3) penetrates through the first support (51) and the middle triangular head (54) in sequence to be positioned in the positioning groove (601).

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