Material roll feeding device and battery winding mechanism

Abstract

The utility model provides a material roll feeding device and a battery winding machine. The material roll feeding device comprises a rack, a material storage assembly, a material roll supporting assembly and a material roll transferring assembly, the material storage assembly comprises a first hanging shaft and a second hanging shaft which are coaxially arranged, the second hanging shaft is arranged in the first hanging shaft, a plurality of first receding grooves distributed in the axial direction are formed in the surface of the first hanging shaft, the second hanging shaft can move relative to the first hanging shaft in the axial direction, and a tensioning block is arranged on the second hanging shaft. The tensioning block can penetrate through the first receding groove to abut against a material roll hung on the first hanging shaft and drive the material roll to move in the axial direction of the first hanging shaft. The at least one group of material roll supporting assemblies are arranged on the outer side of the first hanging shaft in the axial direction of the first hanging shaft, and the material roll supporting assemblies are used for supporting the first hanging shaft; the material roll transferring assembly is arranged on one side of the material storage assembly and used for transferring the material rolls. According to the utility model, the storage capacity of material coils and the production efficiency of the battery winding mechanism are improved.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery manufacturing equipment, and in particular to a material coil feeding device and a battery winding mechanism. Background Art

[0002] The cells of lithium batteries can be produced by winding or lamination. The winding process uses a winding needle to roll the pole piece and diaphragm into a cell, which has the advantage of high efficiency compared to the lamination process. The current battery winding mechanism, especially the large cylindrical battery winding mechanism, has a large size and heavy weight of the pole piece roll. The existing storage and feeding device is limited by the weight of the roll. In order to avoid the structural stability of the storage and feeding device being damaged, most of the rolls stored in the winding mechanism are single rolls, and the spare rolls are usually no more than three rolls. After the roll is used up, the machine needs to be shut down and a manual auxiliary loading trolley is used to replenish the roll. Frequent roll changes greatly reduce the efficiency of continuous operation of the equipment, and also reduce the production capacity of the battery winding mechanism to a certain extent. Utility Model Content

[0003] The utility model aims to provide a material roll feeding device and a battery winding mechanism, which can increase the storage capacity of the material roll, reduce downtime, and improve the production efficiency of the battery winding mechanism.

[0004] In order to solve the above problems, the first aspect of the present invention provides a material roll feeding device, comprising:

[0005] A frame, on which a material storage assembly, a material roll support assembly and a material roll transfer assembly are arranged;

[0006] The material storage assembly includes a first hanging shaft and a second hanging shaft which are coaxially arranged, the second hanging shaft being arranged inside the first hanging shaft, a surface of the first hanging shaft being provided with a plurality of first avoidance grooves distributed along an axial direction, the second hanging shaft being movable along an axial direction relative to the first hanging shaft, a tensioning block being arranged on the second hanging shaft, and the tensioning block being able to pass through the first avoidance groove and abut against a material roll mounted on the first hanging shaft, and driving the material roll to move along the axial direction of the first hanging shaft;

[0007] At least one group of the material roll support components is arranged on the outer side of the first hanging shaft along the axial direction of the first hanging shaft, the material roll support components are used to support the first hanging shaft, and the material roll support components can move close to or away from the first hanging shaft;

[0008] The material roll transfer assembly is arranged on one side of the material storage assembly, and is used for transferring the material roll mounted on the first hanging shaft.

[0009] Furthermore, the first hanging shaft is arranged on the frame, and a positioning groove is opened on the surface of the first hanging shaft, and a plurality of the positioning grooves are distributed along the axial direction of the first hanging shaft, and the spacing between any two adjacent positioning grooves is equal, and the material roll support assembly is abutted against the first hanging shaft through the positioning groove.

[0010] Furthermore, the outer surface of the first hanging shaft is provided with at least one group of first guide wheels arranged along the circumferential direction, and each group of the first guide wheels includes a plurality of first guide wheels arranged at intervals along the axial direction of the first hanging shaft.

[0011] Furthermore, the second hanging shaft also includes a shaft body and a sleeve, the shaft body is arranged inside the sleeve, the shaft body abuts against the tensioning block, the shaft body can move in the axial direction relative to the sleeve, and drive the tensioning block to move in the radial direction of the first hanging shaft, so that the tensioning block passes through the first avoidance groove and abuts against the material roll mounted on the first hanging shaft.

[0012] Furthermore, the outer wall of the sleeve is provided with a guide groove, at least one of the guide grooves is arranged along the circumference of the sleeve, each of the guide grooves extends along the axial direction of the first hanging shaft, and the inner wall of the first hanging shaft is provided with at least one group of second guide wheels arranged along the circumferential direction, each group of the second guide wheels includes a plurality of second guide wheels arranged at intervals along the axial direction of the first hanging shaft, and the second guide wheels can move along the guide grooves.

[0013] Furthermore, the material storage assembly also includes a first driving member and a second driving member, the first driving member is connected to the shaft body, the first driving member is used to drive the shaft body to move along the axial direction of the first hanging shaft, the second driving member is connected to the shaft sleeve through a connecting member, and the second driving member drives the second hanging shaft to move along the axial direction relative to the first hanging shaft through the shaft sleeve.

[0014] Furthermore, the material roll support assembly includes a first support frame and a second support frame, the first support frame and the second support frame are respectively arranged on both sides of the first hanging shaft along the radial direction, and the first support frame and the second support frame are both provided with support rollers, and the support rollers are in contact with the first hanging shaft.

[0015] Furthermore, the material roll support assembly also includes a third driving member and a fourth driving member, the first support frame and the second support frame are both slidably connected to the frame, the third driving member is used to drive the first support frame to move closer to or away from the first hanging axis, and the fourth driving member is used to drive the second support frame to move closer to or away from the first hanging axis.

[0016] Furthermore, the material roll transfer assembly includes a central rotating shaft and a fifth driving member, wherein the fifth driving member is used to drive the central rotating shaft to approach or move away from the first hanging shaft, and the central rotating shaft is used to carry the material roll pushed out from the first hanging shaft.

[0017] A second aspect of the present invention provides a battery winding mechanism, comprising the material coil feeding device as described in the first aspect.

[0018] The material roll feeding device and battery winding mechanism described in the utility model adopt a nested arrangement of the first hanging shaft and the second hanging shaft, and a tensioning block that can drive the material roll to move along the first direction is arranged on the second hanging shaft, and a material roll supporting assembly is arranged on the outer side of the first hanging shaft, so as to improve the structural strength of the first hanging shaft, which is beneficial to increase the storage capacity of the material storage assembly, and the material roll mounted on the first hanging shaft can be more smoothly transported to the material roll transfer assembly through the tensioning block; in the utility model, the reliability and stability of the material roll feeding device are enhanced through the coordination between the material storage assembly, the material roll supporting assembly and the material roll transfer assembly, the storage capacity of the material roll is increased, the manual intervention time and downtime of material replenishment are reduced, which not only improves the production efficiency of the winding mechanism, but also enables the winding mechanism to maintain continuous automatic operation without interference, thereby meeting the needs of continuous production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the material coil feeding device provided in the embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional structural schematic diagram of a material storage assembly provided in an embodiment of the utility model;

[0021] Figure 3 It is a front view structural schematic diagram of the shaft sleeve provided in the embodiment of the utility model;

[0022] Figure 4 It is a side view structural schematic diagram of the shaft sleeve provided in the embodiment of the utility model;

[0023] Figure 5 It is a front view structural schematic diagram of the material roll support assembly provided in an embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the material roll transfer assembly provided in the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The technical solution of the utility model is described clearly and in detail below in conjunction with the accompanying drawings. In the description of the utility model, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, in the description of the utility model, the meaning of "at least one" is one or more, and the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0026] In the description of this specification, the term "as an optional implementation" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one optional embodiment or optional example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same implementation or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] Combination Figure 1 to Figure 2 As shown, the first aspect of this embodiment provides a material roll feeding device, comprising: a frame 10 and a material storage assembly 20, a material roll supporting assembly 30 and a material roll transferring assembly 40 arranged on the frame 10, wherein:

[0028] The material storage assembly 20 includes a first hanging shaft 21 and a second hanging shaft 22 which are coaxially arranged. The second hanging shaft 22 is arranged inside the first hanging shaft 21. A first avoidance groove 211 is provided on the surface of the first hanging shaft 21. The plurality of first avoidance grooves 211 are arranged along a first direction (i.e., the axial direction of the first hanging shaft, Figure 2 The second hanging shaft 22 can move relative to the first hanging shaft 21 along the first direction. A tensioning block 221 is provided on the second hanging shaft 22. When the second hanging shaft 22 moves relative to the first hanging shaft 21 along the first direction, the tensioning block 221 can pass through the first avoidance groove 211 and abut against the material roll 1 mounted on the first hanging shaft 21, and drive the material roll 1 to move along the first direction.

[0029] At least one group of material roll support components 30 is arranged on the outside of the first hanging shaft 21 along the first direction. The material roll support components 30 are used to support the first hanging shaft 21. The material roll support components 30 can move close to or away from the first hanging shaft 21. When the material roll support components 30 move close to the first hanging shaft 21, the material roll support components 30 can support the first hanging shaft 21. When the material roll support components 30 move away from the first hanging shaft 21, the material roll support components 30 play a role of avoiding, so that the material roll 1 can move on the first hanging shaft 21 along the first direction;

[0030] The material roll transfer assembly 40 is disposed on one side of the material storage assembly 20 and is used for transferring the material roll 1 mounted on the first hanging shaft 21 .

[0031] The material roll feeding device provided in the present embodiment, by adopting a nested arrangement of the first hanging shaft and the second hanging shaft, a tensioning block capable of driving the material roll to move along the first direction is arranged on the second hanging shaft, and a material roll supporting assembly is arranged on the outer side of the first hanging shaft, so that the structural strength of the first hanging shaft can be improved, which is beneficial to increase the storage capacity of the material storage assembly, and the material roll mounted on the first hanging shaft can be more smoothly transported to the material roll transfer assembly through the tensioning block; in the present embodiment, the reliability and stability of the material roll feeding device are enhanced through the coordination between the material storage assembly, the material roll supporting assembly and the material roll transfer assembly, the storage capacity of the material roll is increased, the manual intervention time and downtime of material replenishment are reduced, which not only improves the production efficiency of the winding mechanism, but also enables the winding mechanism to maintain continuous automatic operation without interference, thereby meeting the needs of continuous production.

[0032] Based on the above embodiment, as an optional implementation mode, Figure 2 As shown, the first hanging shaft 21 is arranged on the frame 10, the interior of the first hanging shaft 21 is a hollow structure, the second hanging shaft 22 is arranged inside the first hanging shaft 21, and the outer surface of the first hanging shaft 21 is provided with a first guide wheel 212, at least one group of first guide wheels 212 is arranged along the circumference of the first hanging shaft 21, and each group of first guide wheels 212 includes a plurality of first guide wheels 212 arranged at intervals along the first direction. The inner wall of the first hanging shaft 21 is provided with a second guide wheel 213, at least one group of second guide wheels 213 is arranged along the circumference of the second hanging shaft 22, and each group of second guide wheels 213 includes a plurality of second guide wheels 213 arranged at intervals along the first direction. Therefore, by arranging the first guide wheel 212 on the outer surface of the first hanging shaft 21, it is helpful to guide the material roll mounted on the first hanging shaft 21, and it is helpful to reduce the resistance of the material roll 1 moving along the first direction, and improve the stability of the material roll 1 moving along the first direction; by arranging the second guide wheel 213 on the inner wall of the first hanging shaft 21, it is helpful to guide the second hanging shaft 22, so that the second hanging shaft 22 moves along the first direction relative to the first hanging shaft 21, and it is helpful to reduce the resistance of the second hanging shaft 22 moving along the first direction, and improve the stability of the second hanging shaft 22 moving along the first direction.

[0033] On the basis of the above embodiment, as an optional implementation, a positioning groove (not shown) is provided on the surface of the first hanging shaft 21, and a plurality of positioning grooves are distributed on the first hanging shaft 21 along the first direction, and the material roll support assembly 30 abuts against the first hanging shaft 21 through the positioning groove. Therefore, by providing the positioning groove on the surface of the first hanging shaft 21, the stability of the material roll support assembly 30 supporting the first hanging shaft 21 can be improved, which is conducive to further improving the reliability and stability of the material roll feeding device. As an optional implementation, the spacing between any two adjacent positioning grooves is equal, so that the force applied to the material roll support assembly 30 can be more uniform, which is conducive to improving the overall stability of the material roll feeding device.

[0034] Based on the above embodiment, as an optional implementation mode, Figure 2 As shown, the second hanging shaft 22 also includes a shaft body 222 and a shaft sleeve 223. The shaft body 222 is arranged inside the shaft sleeve 223. The shaft body 222 can move relative to the shaft sleeve 223 along the first direction, and the shaft body 222 abuts against the tension block 221. When the shaft body 222 moves relative to the shaft sleeve 223 along the first direction, the shaft body 222 can drive the tension block 221 to move along the second direction (i.e., the radial direction of the first hanging shaft, Figure 2 The tension block 221 moves in the first avoidance groove 211 and abuts against the inner wall of the material roll 1 mounted on the first hanging shaft 21. Specifically, the tension block 221 has a first inclined surface, and the shaft body 222 is provided with a second inclined surface matching the first inclined surface, and the first inclined surface abuts against the second inclined surface. When the shaft body 222 moves in the first direction relative to the shaft sleeve 223, the second inclined surface on the shaft body 222 can push the tension block 221 to move in the second direction through the first inclined surface, so that the tension block 221 passes through the first avoidance groove 211 from the inside of the first hanging shaft 21, thereby abutting against the inner wall of the material roll 1.

[0035] Based on the above embodiment, as an optional implementation, the material storage assembly 20 further includes a first driving member 23 and a second driving member 24, wherein the first driving member 23 is connected to the shaft body 222, and the first driving member 23 is used to drive the shaft body 222 to move along the first direction. The second driving member 24 is connected to the shaft sleeve 223 through a connecting member, and the second driving member 24 drives the second hanging shaft 22 to move relative to the first hanging shaft 21 along the first direction through the shaft sleeve 223, so that the material roll 1 moves along the first direction. Thus, the first driving member 23 drives the shaft body 222 to move in the first direction, so that the shaft body 222 drives the tensioning block 221 to move in the second direction, so that the tensioning block 221 passes through the first avoidance groove 211 and abuts against the inner wall of the material roll 1 mounted on the first hanging shaft 21, and then the second driving member 24 drives the second hanging shaft 22 to move in the first direction. During the movement of the second hanging shaft 22 in the first direction, the tensioning block 221 arranged on the second hanging shaft 22 can drive the material roll 1 mounted on the first hanging shaft 21 to move in the first direction; in addition, the second driving member 24 can also control the distance that the second hanging shaft 22 moves in the first direction, so as to adjust the distance that the second hanging shaft 22 drives the material roll 1 to move in the first direction.

[0036] In this embodiment, the first driving member 23 may be a cylinder, the rod of the cylinder is connected to the shaft 222, the second driving member 24 may be a motor, the connecting member may be a screw, a screw nut and a connecting plate, the motor is connected to the screw, the screw nut is inserted on the screw, the screw nut is connected to the shaft sleeve 223 through the connecting plate, when the motor drives the screw to rotate, the screw nut moves along the first direction to drive the connecting plate and the shaft sleeve 223 connected thereto to move along the first direction, thereby pushing the second hanging shaft 22 to move along the first direction relative to the first hanging shaft 21. Therefore, the use of a cylinder as the first driving member 23 is convenient for controlling the movement of the shaft 222, and the use of a motor as the second driving member 24 is convenient for controlling the distance the second hanging shaft 22 moves along the first direction.

[0037] Based on the above embodiment, as an optional implementation mode, Figure 3 and Figure 4 As shown, the outer wall of the sleeve 223 is provided with a guide groove 2231, and a plurality of guide grooves 2231 are provided along the circumference of the sleeve 223, each guide groove 2231 extends along the first direction, and the second guide wheel 213 provided on the inner wall of the first hanging shaft 21 can move along the guide groove 2231. Therefore, by providing the guide groove 2231 matched with the second guide wheel 213 on the outer wall of the sleeve 223, the second hanging shaft 22 can only move along the first direction relative to the first hanging shaft 21, and the second hanging shaft 22 is prevented from rotating along the circumferential direction, so that the second hanging shaft 22 can more stably drive the material roll 1 to move along the first direction.

[0038] Based on the above embodiment, as an optional implementation mode, Figure 3As shown, a second hole avoidance groove 2232 is provided on the surface of the sleeve 223, and a plurality of second hole avoidance grooves 2232 are spaced apart along the first direction. The tensioning block 221 can pass through the second hole avoidance groove 2232, and after passing through the second hole avoidance groove 2232 and the first hole avoidance groove 211, the tensioning block 221 abuts against the material roll 1 mounted on the first hanging shaft 21.

[0039] Based on the above embodiment, as an optional implementation mode, Figure 5 As shown, the material roll support assembly 30 includes a first support frame 31, a second support frame 32, a third drive member 33 and a fourth drive member 34, the first support frame 31 and the second support frame 32 are respectively arranged on both sides of the first hanging shaft 21 along the second direction, and the first support frame 31 and the second support frame 32 are both provided with support rollers 35, and the support rollers 35 are in contact with the first hanging shaft 21, wherein the support rollers 35 are in contact with the positioning grooves on the first hanging shaft 21. The first support frame 31 and the second support frame 32 are both slidably connected to the frame 10, and the third driving member 33 is connected to the first support frame 31, and the third driving member 33 is used to drive the first support frame 31 to move along the first direction, so that the first support frame 31 moves close to or away from the first hanging shaft 21; the fourth driving member 34 is connected to the second support frame 32, and the fourth driving member 34 is used to drive the second support frame 32 to move along the first direction, so that the second support frame 32 moves close to or away from the first hanging shaft 21, so that when the first support frame 31 and the second support frame 32 are close to the first hanging shaft 21, they can support the first hanging shaft 21, and when the first support frame 31 and the second support frame 32 are away from the first hanging shaft 21, they can play a role of avoiding. Specifically, the frame 10 is provided with two first slide rails extending along the first direction, the first support frame 31 is connected to one of the first slide rails through a slider, the third driving member 33 is connected to the slider through a screw rod, and the third driving member 33 drives the slider to move along the first direction by driving the screw rod, thereby driving the first support frame 31 to move along the first direction. The second support frame 32 is connected to another first slide rail through a slider, and the fourth driving member 34 is connected to the slider through a screw rod. The fourth driving member 34 drives the slider to move along the first direction by driving the screw rod, thereby driving the second support frame 32 to move along the first direction. As an optional embodiment, the third driving member 33 and the fourth driving member 34 are both motors.

[0040] On the basis of the above embodiment, as an optional implementation, multiple groups of roll support assemblies 30 are arranged on the outside of the first hanging shaft 21 along the first direction, and as the number of rolls 1 mounted on the first hanging shaft 21 increases, the roll support assemblies 30 can be successively close to the first hanging shaft 21 to support the first hanging shaft 21, so as to enhance the support strength of the first hanging shaft 21 and improve the stability and reliability of the roll feeding device. It should be noted that only one group of roll support assemblies 30 is shown in the accompanying drawings of this embodiment, and those skilled in the art can adjust the number of roll support assemblies 30 according to the number of rolls 1 mounted on the first hanging shaft 21, for example: for every additional N rolls of rolls 1, one group of roll support assemblies 30 is added, and the added roll support assemblies 30 are arranged along the first direction. In this embodiment, the specific value of N is not further limited, and those skilled in the art can set it according to actual conditions.

[0041] Based on the above embodiment, as an optional implementation mode, Figure 6 As shown, the roll transfer assembly 40 includes a transfer shaft 41 and a fifth driving member 42. The fifth driving member 42 is used to drive the transfer shaft 41 to approach or move away from the first hanging shaft 21. The transfer shaft 41 is used to carry the roll 1 pushed out from the first hanging shaft 21 and transport the roll 1 to the next process. Specifically, the frame 10 is provided with a second slide rail 43 extending along the first direction. The transfer shaft support frame provided with the transfer shaft 41 is connected to the second slide rail 43 through a slider. The fifth driving member 42 is connected to the slider through a screw rod. The fifth driving member 42 drives the slider to move along the first direction by driving the screw rod, thereby driving the transfer shaft support frame and the transfer shaft 41 provided thereon to move along the first direction. As an optional embodiment, the fifth driving member 42 is a motor.

[0042] It should be noted that the specific structure of the transfer shaft 41 is not further limited in this embodiment, and technicians in this field can choose the structure of the transfer shaft 41 commonly used in this field, as long as the transfer shaft 41 can take the material roll 1 from the first hanging shaft 21 and transport the material roll 1 to the next process.

[0043] Combine the following Figure 1 and Figure 2 The working principle of the material coil feeding device of this embodiment is described as follows:

[0044] The materials are manually prepared in advance on the first hanging shaft 21 of the material storage assembly 20, and multiple rolls can be placed at one time;

[0045] The first driving member 23 drives the shaft body 222 to move in the first direction, so that the shaft body 222 drives the tensioning block 221 to move in the second direction, and the tensioning block 221 passes through the first avoiding groove 211 and abuts against the inner wall of the material roll 1 mounted on the first hanging shaft 21, and then the second driving member 24 drives the second hanging shaft 22 to move in the first direction, and the tensioning block 221 drives the material roll 1 mounted on the first hanging shaft 21 to move in the first direction until the material roll 1 is moved to the preset position. As the number of material rolls 1 mounted on the first hanging shaft 21 increases, the first support frame 31 and the second support frame 32 in the material roll support assembly 30 approach the first hanging shaft 21 and support the first hanging shaft 21.

[0046] The transfer shaft 41 approaches the first hanging shaft 21, and after the transfer shaft 41 and the first hanging shaft 21 are connected, the front end of the first hanging shaft 21 is supported, the first support frame 31 and the second support frame 32 are away from the first hanging shaft 21, and the material roll 1 on the first hanging shaft 21 is pushed onto the transfer shaft 41, and the transfer shaft 41 is away from the first hanging shaft 21, and the material roll 1 is transported to the next process;

[0047] The next material roll 1 on the first hanging shaft 21 is moved to a preset position by the tension block 221, and the material roll support assembly 30 supports the first hanging shaft 21 again. After the transfer shaft 41 and the first hanging shaft 21 are docked again, the material roll support assembly 30 avoids again to transport the next material roll 1 to the next process;

[0048] The above operations are repeated to achieve continuous conveying of the material roll 1 and continuous production of the battery winding machine.

[0049] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A material coil feeding device, characterized in that: include: A frame, on which a material storage assembly, a material roll support assembly and a material roll transfer assembly are arranged; The material storage assembly includes a first hanging shaft and a second hanging shaft which are coaxially arranged, the second hanging shaft being arranged inside the first hanging shaft, a surface of the first hanging shaft being provided with a plurality of first avoidance grooves distributed along an axial direction, the second hanging shaft being movable along an axial direction relative to the first hanging shaft, a tensioning block being arranged on the second hanging shaft, and the tensioning block being able to pass through the first avoidance groove and abut against a material roll mounted on the first hanging shaft, and driving the material roll to move along the axial direction of the first hanging shaft; At least one group of the material roll support components is arranged on the outer side of the first hanging shaft along the axial direction of the first hanging shaft, the material roll support components are used to support the first hanging shaft, and the material roll support components can move close to or away from the first hanging shaft; The material roll transfer assembly is arranged on one side of the material storage assembly, and is used for transferring the material roll mounted on the first hanging shaft.

2. The coil feeding device according to claim 1, characterized in that: The first hanging shaft is arranged on the frame, and a positioning groove is opened on the surface of the first hanging shaft. A plurality of the positioning grooves are distributed along the axial direction of the first hanging shaft, and the spacing between any two adjacent positioning grooves is equal. The material roll support assembly abuts against the first hanging shaft through the positioning groove.

3. The coil feeding device according to claim 1, characterized in that: The outer surface of the first hanging shaft is provided with at least one group of first guide wheels arranged in the circumferential direction, and each group of the first guide wheels includes a plurality of first guide wheels arranged at intervals in the axial direction of the first hanging shaft.

4. The material coil feeding device according to claim 1, characterized in that: The second hanging shaft also includes a shaft body and a sleeve, wherein the shaft body is arranged inside the sleeve, and the shaft body abuts against the tensioning block. The shaft body can move in the axial direction relative to the sleeve, and drive the tensioning block to move in the radial direction of the first hanging shaft, so that the tensioning block passes through the first avoidance groove and abuts against the material roll mounted on the first hanging shaft.

5. The material coil feeding device according to claim 4, characterized in that: The outer wall of the sleeve is provided with guide grooves, at least one of which is arranged along the circumference of the sleeve, each of which extends along the axial direction of the first hanging shaft, and the inner wall of the first hanging shaft is provided with at least one group of second guide wheels arranged along the circumference, each group of the second guide wheels includes a plurality of second guide wheels arranged at intervals along the axial direction of the first hanging shaft, and the second guide wheels can move along the guide grooves.

6. The coil feeding device according to claim 4, characterized in that: The material storage assembly also includes a first driving member and a second driving member, the first driving member is connected to the shaft body, the first driving member is used to drive the shaft body to move along the axial direction of the first hanging shaft, the second driving member is connected to the shaft sleeve through a connecting member, and the second driving member drives the second hanging shaft to move along the axial direction relative to the first hanging shaft through the shaft sleeve.

7. The coil feeding device according to claim 1, characterized in that: The material roll support assembly includes a first support frame and a second support frame, the first support frame and the second support frame are respectively arranged on both sides of the first hanging shaft along the radial direction, and the first support frame and the second support frame are both provided with support rollers, and the support rollers are in contact with the first hanging shaft.

8. The material coil feeding device according to claim 7, characterized in that: The material roll support assembly also includes a third driving member and a fourth driving member. The first support frame and the second support frame are both slidably connected to the frame. The third driving member is used to drive the first support frame to move closer to or away from the first hanging shaft, and the fourth driving member is used to drive the second support frame to move closer to or away from the first hanging shaft.

9. The coil feeding device according to claim 1, characterized in that: The material roll transfer assembly includes a central rotating shaft and a fifth driving member, wherein the fifth driving member is used to drive the central rotating shaft to approach or move away from the first hanging shaft, and the central rotating shaft is used to carry the material roll pushed out from the first hanging shaft.

10. A battery winding mechanism, characterized in that: It comprises a coil feeding device as claimed in any one of claims 1 to 9.

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