CN217114513U - Roll up needle drive arrangement, winding head and winder - Google Patents

Abstract

The utility model provides a roll up needle drive arrangement, coiling head and winder relates to lithium battery equipment technical field. The needle winding driving device comprises a needle winding shaft, a driven device and a driving device, wherein the needle winding shaft is suitable for being sequentially switched among a plurality of stations; the driven device is fixedly connected to the needle winding shaft, the driving devices and the stations are fixed to a frame of the needle winding driving device in a one-to-one correspondence mode, and the driving device on any station is suitable for being in contact with the driven device to achieve driving connection and used for driving the needle winding shaft to rotate. The utility model discloses can solve the problem that reel inertia among the prior art is big, motor power is little, production efficiency is low. The utility model discloses in, the initiative device does not set up on the reel, has reduced the inertia of reel. The driving device with larger power performance can be selected, so that the rotating speed of the needle winding shaft is improved, and the production efficiency is improved.

Description

Roll up needle drive arrangement, winding head and winder

Technical Field

The utility model relates to a lithium battery equipment technical field, concretely relates to roll up needle drive arrangement, coiling head and winder.

Background

In the existing lithium battery production equipment, the winding needle is driven in a contact mode, wherein in one mode, a winding motor for driving the winding needle to rotate is directly arranged on a reel, and the winding motor is directly connected with a winding needle shaft. According to the scheme, the winding motor can turn over along with the reel, so that the rotary inertia of the reel is increased, the turning speed is influenced, the energy consumption of lithium battery production equipment is increased, and the production efficiency is reduced. And each winding needle shaft is directly connected with one winding motor, and the winding motor can only select smaller power due to the limitation of an assembly space, so that the production efficiency is limited and the productivity is low.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that reel inertia among the prior art is big, motor power is little, production efficiency is low to a roll up needle drive arrangement, coiling head and winder are provided.

In order to solve the above problem, a first aspect of the present invention provides a needle winding driving device, including a needle winding shaft, a driven device and a plurality of driving devices, wherein the needle winding shaft is suitable for switching between a plurality of stations in sequence; the driven device is fixedly connected to the needle winding shaft; the driving device and the stations are fixed on the frame of the needle winding driving device in a one-to-one correspondence mode, and the driving device on any station is suitable for being in contact with the driven device to achieve driving connection and used for driving the needle winding shaft to rotate.

Optionally, the driven device comprises a driven friction wheel, and the driven friction wheel is fixedly arranged on the needle winding shaft; the driving means comprises a driving friction wheel adapted to cooperate with a driven friction wheel.

Optionally, the driven device comprises a driven gear, and the driven gear is fixedly arranged on the needle winding shaft; the driving means comprises a driving gear adapted to cooperate with a driven gear.

Optionally, the driving device is connected with a first driving mechanism, and a power output shaft of the first driving mechanism is connected with the driving device.

Optionally, the driving device is connected with a second driving mechanism; the power output end of the second driving mechanism is connected with the driving device through a connecting structure and is suitable for driving the driving device to be in contact with or separated from the driven device.

Optionally, the second driving mechanism comprises a cylinder, a cylinder or an electric cylinder.

Optionally, the second driving mechanism includes a screw rod and a threaded sleeve sleeved on the screw rod and in threaded fit with the screw rod, and the threaded sleeve is connected with the driving device.

Optionally, the number of the winding needle shafts is at least two, the winding needle shafts are arranged in parallel, a driven device is arranged on any winding needle shaft, and the driven device on any winding needle shaft is suitable for being in contact with a driving device on any station to realize driving connection.

A second aspect of the present invention provides a winding head, comprising a reel and a winding needle driving device according to any one of the above technical solutions, wherein the winding needle shaft is rotatably mounted on the reel.

Optionally, a brake is arranged on the needle winding shaft.

Optionally, an encoder is arranged on the winding needle shaft.

A third aspect of the present invention provides a winding machine, comprising a winding head according to any one of the above technical solutions.

The utility model has the advantages of it is following:

1. utilize the technical scheme of the utility model, driven device fixed connection is epaxial at the book needle, and the drive arrangement sets up with the station one-to-one, and the drive arrangement on every station all can realize the drive with the epaxial driven device contact cooperation of book needle and connect, realizes the drive of fixed point to, roll up epaxial driven device of only connecting of needle, can simplify the transmission structure of book needle axle. Meanwhile, the driving device is not arranged on the reel, so that the mass of the reel is greatly reduced, and the rotational inertia of the reel is reduced. In addition, the driving device of the needle winding shaft is separated from the reel, so that the driving device of the needle winding shaft is not limited by space any more, and the driving device with higher power performance, namely the driving device and the driven device with higher transmission performance, can be selected, thereby improving the rotating speed of the needle winding shaft and improving the production efficiency.

2. The driven device is provided with a driven friction wheel, the driving device is provided with a driving friction wheel, a friction driving mechanism is formed, and the driving friction wheel and the driven friction wheel are easy to match. The driving friction wheel is connected with the second driving mechanism, contact and separation between the driving friction wheel and the driven friction wheel can be achieved, especially, a plurality of needle winding shafts are arranged on the reel, and when the driven friction wheels on the needle winding shafts rotate to different stations, the driving friction wheel can be in transmission connection with the driving friction wheel, and the driving friction wheel is simple in structure and easy to control.

3. When a roll needle axle sets up a plurality ofly, the epaxial driven device of any book needle can be connected with the drive arrangement drive on any station, when realizing that a roll needle axle can be driven pivoted on a plurality of stations, realizes that the drive arrangement on a station can drive a plurality of book needle axles respectively and rotate, and a plurality of book needle axles share a drive arrangement, more obvious embodies the utility model discloses an advantage has reduced the inertia of reel greatly, reduces the energy consumption, improves production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a schematic structural diagram of a winding head including a first embodiment of a winding needle driving device provided by the present invention;

FIG. 2 shows a side view of FIG. 1;

fig. 3 shows a schematic structural diagram of a second embodiment of the winding needle drive device.

Description of reference numerals:

1. coiling; 2. a needle winding shaft; 21. a first bobbin; 22. a second needle winding shaft; 3. coiling a needle; 4. A friction drive mechanism; 41. a driven friction wheel; 42. a driving friction wheel; 43. a first motor; 44. a connecting plate; 45. a lead screw; 46. a threaded sleeve; 47. a cylinder; 48. a second motor; 5. a brake; 6. an encoder.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

For convenience of describing the technical solution of the present invention, the following detailed description is made with reference to the accompanying drawings and specific examples, but the examples should not be construed as limiting the present invention.

Example 1

The utility model provides a roll up needle drive arrangement, including roll up needle axle 2, slave unit and a plurality of drive arrangement. Wherein the needle winding shaft 2 is suitable for being sequentially switched among a plurality of stations; the driven device is fixedly connected to the needle winding shaft 2, the driving devices and the stations are fixed to a frame of the needle winding driving device in a one-to-one correspondence mode, and the driving device on any station is suitable for being in contact with the driven device to achieve driving connection and used for driving the needle winding shaft 2 to rotate.

Utilize the technical scheme of the utility model, driven device fixed connection is on book needle axle 2, and the drive arrangement sets up with the station one-to-one, and the drive arrangement on every station all can realize the drive with the epaxial driven device contact cooperation of book needle and connect, realizes the drive of fixed point to, only connect a driven device on the book needle axle 2, can simplify the transmission structure of book needle axle 2. Meanwhile, the active device is not arranged on the reel 1, so that the mass of the reel 1 is greatly reduced, and the rotational inertia of the reel 1 is reduced. In addition, the driving mechanism of the needle winding shaft 2 is separated from the reel 1, so that the driving device of the needle winding shaft 2 is not limited by space any more, and a driving device with higher power performance, namely a driving device and a driven device with higher transmission performance, can be selected, thereby improving the rotating speed of the needle winding shaft 2 and improving the production efficiency.

The driving device is fixed on the frame of the needle winding driving device, so that the driving device for winding the needle shaft 2 is separated from the reel 1, the whole mass of the reel 1 can be effectively reduced, the rotational inertia of the reel 1 is reduced, the energy consumption is reduced, and the reel 1 is more stable in rotation. And, the initiative device is because not set up on reel 1 for it has bigger assembly space, through selecting for use the slave unit and the initiative device of great drive ratio, can effectual improvement winding needle axle 2's rotational speed, further improves production efficiency. When the needle winding shaft 2 switches the stations, the driving device on each station can be in contact with the driven device 1 on the needle winding shaft 2 to realize driving connection, and fixed-point driving is realized. In addition, only one driven device is connected to the needle winding shaft 2, so that the transmission structure of the needle winding shaft 2 can be simplified. In addition, in the prior art, a contact type needle winding shaft 2 is driven by a technical scheme that a winding motor for driving the needle winding shaft 2 to rotate is arranged outside the reel 1, and the needle winding shaft 2 is indirectly driven to rotate through a transmission shaft. The scheme has a complex structure, and the winding motor is far away from the needle winding shaft 2, so that the rigidity of a transmission chain is poor, the control precision of a transmission mechanism is low, and the corresponding speed is slow. The utility model discloses a take up direct mount slave unit on needle shaft 2 has simplified the transmission structure on the one hand, and on the other hand has shortened the distance of power supply with take up needle shaft 2, and it is high to have the driving chain rigidity, and control accuracy is high, advantage that response speed is fast.

For convenience of description, the winding head including the winding needle driving device is taken as an example in the present embodiment to illustrate the advantage of the fixed-point driving of the winding needle shaft in the present invention.

The winding head comprises a reel 1, a needle winding shaft 2 is rotatably arranged on the reel 1, one end of the needle winding shaft 2 is connected with a winding needle 3, and the other end of the needle winding shaft is connected with a driving device. The needle winding shaft 2 has two rotation modes, one mode is that the reel 1 is fixed, and the driving device drives the needle winding shaft 2 to rotate, so that the needle winding shaft 3 is driven to rotate; the other is that the needle winding shaft 2 does not rotate, and the reel 1 drives the needle winding shaft 2 to revolve for switching the working positions. Typically, a plurality of stations are provided at intervals around the circumference of the reel 1. In this embodiment, a winding head including three stations is taken as an example. The winding head of the present embodiment, seen in the orientation shown in fig. 2, provides, in sequence, a winding station, a gluing station and a blanking station (stations not shown in the figures) in the direction of anticlockwise rotation of the reel 1. That is, when the needle winding shaft 2 is located at the winding station, the needle winding shaft 2 drives the needle winding 3 to rotate for winding the battery cell; after the cell winding process is finished, the reel 1 rotates anticlockwise to drive the winding needle shaft 2 to revolve, the winding needle 3 is switched to a rubberizing station, and rubberizing is carried out on the wound cell on the winding needle 3; after the rubberizing process is finished, the reel 1 rotates anticlockwise again, the needle winding shaft 2 is driven to revolve, the winding needle 3 is switched to the discharging station, and the rubberized battery cell is discharged onto the transmission belt through a manipulator or other discharging mechanisms. In the process of switching the stations of the needle winding shaft 2 for many times, the driven device on the needle winding shaft 2 can be in contact with the driving device on the corresponding station to realize driving connection, and fixed-point driving is realized.

This fixed-point drive is advantageous in the case of a plurality of needle reels 2. For the sake of control, a preferred embodiment provides that the number of reels 2 on the reel 1 is equal to the number of stations. For example, the winding head is provided with three stations which are a first station, a second station and a third station in turn along the anticlockwise direction, and the three stations all need to rotate the needle rolling shaft. Three needle winding shafts 2 are arranged on the reel 1 in one-to-one correspondence with the three stations, and are a first needle winding shaft 21, a second needle winding shaft 22 and a third needle winding shaft in sequence along the anticlockwise direction. Three needle winding shafts 2 are distributed on the reel 1 at equal intervals along the circumferential direction of the reel 1. Assume that the initial state is that the first winder spindle 21 is at the first station, the second winder spindle 22 is at the second station, and the third winder spindle is at the third station. Thus, when the reel 1 is rotated, the second winder shaft 22 is correspondingly moved from the second station to the third station when the first winder shaft 21 is moved from the first station to the second station, and likewise the third winder shaft is moved from the third station to the first station. In the process, the driven device on the first winding needle shaft 21 is separated from the driving device on the first station, and is in contact with the driving device on the second station to realize driving connection; similarly, the driven device on the second needle winding shaft 22 is separated from the driving device on the second station, and is in contact with the driving device on the third station to realize driving connection; similarly, the driven device on the third winding needle shaft is in contact with the driving device on the first station and realizes driving connection.

When scroll needle axle 2 sets up a plurality ofly, driven device on any scroll needle axle 2 can contact and realize the drive with the initiative device on any station and connect, when realizing that a scroll needle axle 2 can be driven pivoted on a plurality of stations, realize that initiative device on a station can drive a plurality of scroll needle axles 2 respectively and rotate, also promptly, a plurality of scroll needle axles 2 share initiative device, more obvious the manifestation the utility model discloses an advantage has reduced reel 1's inertia greatly, reduces the energy consumption, improves production efficiency.

Referring to fig. 1 and fig. 2, in this embodiment, two needle winding shafts 2 are disposed on one reel 1, and the needle winding shafts 2 are disposed parallel to the axis of the reel 1. In the orientation of fig. 2, the two winding shafts 2 are a first winding shaft 21 located at the upper part of the reel 1 and a second winding shaft 22 located at the lower part of the reel 1. Each winding needle shaft 2 is connected with a driving device on the same side, and viewed from the direction of fig. 1, the left side of the winding needle shaft 2 is connected with a winding needle 3 for winding a battery cell, and the right side of the winding needle shaft 2 is connected with a driven device.

Referring to fig. 1 and fig. 2, the driven device includes a driven friction wheel 41, and the driven friction wheel 41 is fixedly mounted on the needle winding shaft 2; the driving device comprises a driving friction wheel 42 adapted to cooperate with the driven friction wheel 41, the driving friction wheel 42 is connected with a first driving mechanism, and a power output shaft of the first driving mechanism is connected with the driving friction wheel 42. In this embodiment, the first drive mechanism is driven by the first motor 43. That is, the output shaft of the first motor 43 is connected to the driving pulley 42 to rotate the driving pulley 42. The driven device and the driving device constitute a friction drive mechanism 4.

Of course, as an alternative embodiment, the driven means comprises a driven gear and the driving means comprises a driving gear cooperating with the driven gear. That is, the driven gear of fixed connection on the book needle axle 2 all is equipped with the driving gear on every station, and when reel 1 drove book needle axle 2 and rotates the switching station, the driving gear on every station all can with driven gear contact and meshing, realizes the transmission and connects. The driving gear is connected with the first driving mechanism, the first driving mechanism drives the driving gear to rotate, and the driving gear and the driven gear are in meshing transmission to drive the winding needle shaft 2 to rotate.

Further, in the present embodiment, a second driving mechanism is connected to the driving friction wheel 42. The power output end of the second driving mechanism is connected with the driving friction wheel 42 through a connecting structure and is suitable for driving the driving friction wheel 42 to be in contact with or separated from the driven friction wheel 41.

The present embodiment provides a first implementation of the second drive mechanism. The second driving mechanism comprises a cylinder 47, the cylinder 47 is fixedly mounted on the frame above the driving friction wheel 42, a piston rod of the cylinder 47 is vertically arranged downwards, a connecting plate 44 is arranged between the cylinder 47 and the first motor 43, the end part of the piston rod of the cylinder 47 is connected with the connecting plate 44, and the first motor 43 and the driving friction wheel 42 driven by the first motor 43 are connected on the connecting plate 44. That is, when the piston rod of the cylinder 47 makes a telescopic motion, the first motor 43 and the driving pulley 42 are driven to make an up-and-down motion in the vertical direction at the same time. When the first motor 43 is started, the driving friction wheel 42 is driven to rotate, and the friction force between the driving friction wheel 42 and the driven friction wheel 41 drives the driven friction wheel 41 to rotate, so as to drive the needle winding shaft 2 to rotate. For compactness of construction, the first motor 43 may be located on a side adjacent the reel 1. Specifically, referring to fig. 1, the first motor 43 is provided on the side close to the reel 1 without interfering with other components of the winding head. The driving device is only provided with one set, specifically, the cylinder 47, the first motor 43 and the driving friction wheel 42 are only provided with one, when the reel 1 is provided with a plurality of reel shafts 2, one end of each reel shaft 2 is connected with the driven friction wheel 41, the winding work of the battery cell is completed by the winding needle 3 on the current reel shaft 2, when the station needs to be switched, the piston rod of the cylinder 47 retracts to drive the driving friction wheel 42 to ascend, and the driving friction wheel 42 and the driven friction wheel 41 are separated. The reel 1 rotates to drive the needle winding shaft 2 to switch stations, the driven friction wheel 41 on the current needle winding shaft 2 is gradually far away from the driving friction wheel 42, the driven friction wheel 41 on the second needle winding shaft 2 on the rotation direction of the reel 1 is gradually close to the driving friction wheel 42 until the second needle winding shaft 2 rotates to a winding station, the reel 1 stops rotating, a piston rod of the control cylinder 47 stretches out to drive the driving friction wheel 42 to descend, the driven friction wheel 41 is gradually close to the driven friction wheel 41 until the driven friction wheel 41 contacts, the second needle winding shaft 2 is driven to rotate, and the fixed-point driving of the needle winding shafts 2 can be realized.

Of course, as a variant embodiment of the present embodiment, the cylinder 47 may be replaced by an oil cylinder or an electric cylinder. In the present embodiment, the driving friction wheel 42 and the driven friction wheel 41 are both cylindrical. Of course, the driving friction wheel 42 and the driven friction wheel 41 may be circular truncated cones, as shown in fig. 3.

Example 2

Referring to fig. 3, the difference from embodiment 1 is at least that the second driving mechanism includes a lead screw 45 driven by a second motor 48 and a threaded sleeve 46 sleeved on the lead screw 45 and in threaded fit with the lead screw 45. The second motor 48 and the lead screw 45 are fixedly mounted on the frame. Similarly, the threaded sleeve 46 is connected with the first motor 43 and the driving friction wheel 42 through the connecting plate 44, when the second motor 48 rotates, the lead screw 45 is driven to rotate, and because the second motor 48 and the lead screw 45 are fixedly installed, the rotation of the lead screw 45 is transmitted to the threaded sleeve 46, and because the threaded sleeve 46 is fixedly connected with the connecting plate 44, the rotation of the threaded sleeve 46 is limited, and the threaded sleeve 46 drives the connecting plate 44, the first motor 43 and the driving friction wheel 42 to move along the axial direction of the lead screw 45. In this embodiment, the screw 45 is horizontally disposed, and controlling the forward and reverse rotation of the second motor 48 can control the translation of the driving friction wheel 42 in the horizontal plane, specifically, the left and right displacement is shown in fig. 3. When the driving friction wheel 42 moves rightwards, the driving friction wheel 42 is disconnected with the driven friction wheel 41, the driven friction wheels 41 on different needle winding shafts 2 can be switched, and one driving friction wheel 42 respectively drives the driven friction wheels 41 on a plurality of needle winding shafts 2, namely fixed-point driving is realized.

Of course, as a flexible embodiment of the present embodiment, the screw 45 and the screw sleeve 46 can be replaced by other secondary driving mechanisms, such as a link mechanism, which can realize the movement of the driving friction wheel 42. The movement of the driving friction wheel 42 is not limited to the vertical and horizontal movements in embodiments 1 and 2, as long as the driving friction wheel 42 can be moved on a fixed movement path to make and break contact with and from the driven friction wheel 41.

Example 3

Compared with the winding head described in embodiment 1 or embodiment 2, the winding head provided in this embodiment further has a brake 5 and an encoder 6 on the winding needle shaft 22. The brake 5 can be a band brake. The brake 5 can stop the needle winding shaft 2 rapidly and respond rapidly. The encoder 6 can feed back the rotation position of the needle winding shaft 2 and record the rotation number of the needle winding shaft 2, namely, the winding length of the battery cell.

Example 4

The present embodiment provides a winding machine comprising a winding head as described in any of the above embodiments.

According to the above description, the present patent application has the following advantages:

1. the driving device is not arranged on the reel 1, so that the mass of the reel 1 can be reduced, and the rotational inertia of the reel 1 can be reduced; the plurality of stations are provided with driving devices, and the needle winding shafts 2 on different stations can be driven to rotate so as to realize fixed-point driving;

2. the driving device is not arranged on the reel 1, is not limited by space, can select a driving device with higher power performance, improves the rotating speed of the needle winding shaft 2 and improves the production efficiency;

3. there is no complicated transmission mechanism between the needle winding shaft 2 and the active device, the structure of the driving mechanism of the needle winding shaft 2 is simplified, the cost is reduced, the needle winding shaft 2 is closer to the power source, the transmission rigidity is good, and the response is fast.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (12)

1. A winding needle driving device, comprising:

a needle winding shaft (2) suitable for switching among a plurality of stations in sequence;

the driven device is fixedly connected to the needle winding shaft (2);

the driving devices and the stations are fixed on a rack of the needle winding driving device in a one-to-one correspondence mode, and the driving device on any station is suitable for being in contact with the driven device to achieve driving connection and is used for driving the needle winding shaft (2) to rotate.

2. The needle winding driving device according to claim 1, characterized in that the driven device comprises a driven friction wheel (41), the driven friction wheel (41) is fixedly mounted on the needle winding shaft (2); the driving means comprise a driving friction wheel (42) adapted to cooperate with the driven friction wheel (41).

3. Needle winding driving device according to claim 1, characterized in that said driven means comprise a driven gear fixedly mounted on said needle winding shaft (2); the driving device comprises a driving gear which is suitable for being matched with the driven gear.

4. The needle winding driving device according to claim 1, wherein a first driving mechanism is connected to the driving device, and a power output shaft of the first driving mechanism is connected to the driving device.

5. The needle winding driving device according to claim 1, wherein a second driving mechanism is connected to the active device; and the power output end of the second driving mechanism is connected with the driving device through a connecting structure and is suitable for driving the driving device to be in contact with or separated from the driven device.

6. The needle winding driving device according to claim 5, wherein the second driving mechanism comprises a cylinder, an oil cylinder or an electric cylinder.

7. The needle winding driving device according to claim 5, wherein the second driving mechanism comprises a lead screw (45) and a threaded sleeve (46) which is sleeved on the lead screw (45) and is in threaded fit with the lead screw (45), and the threaded sleeve (46) is connected with the driving device.

8. The needle winding driving device according to any one of claims 1 to 7, characterized in that at least two needle winding shafts (2) are provided, the needle winding shafts (2) are arranged in parallel, the driven device is arranged on any one needle winding shaft (2), and the driven device on any one needle winding shaft (2) is suitable for being in contact with the driving device on any station to realize driving connection.

9. Winding head, comprising a reel (1) and a winding pin driving device according to any of claims 1-8, wherein the winding pin shaft (2) is rotatably mounted on the reel (1), and a winding pin (3) is connected to one end of the winding pin shaft (2).

10. A winding head according to claim 9, characterised in that the needle winding shaft (2) is provided with a brake (5).

11. A winding head according to claim 9, characterized in that the needle winding shaft (2) is provided with an encoder (6).

12. A winding machine, characterized in that it comprises a winding head according to any one of claims 9 to 11.

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