Winding needle mechanism

Abstract

The utility model discloses a winding needle mechanism which is used for winding a battery cell and relates to the technical field of batteries. Comprising an inner clamping needle and an outer winding needle, and the outer winding needle is movably arranged on the inner clamping needle; the inner clamping needle is provided with a first shaft and a second shaft, the first shaft and the second shaft are provided with adjusting structures which are meshed and connected with each other, the first shaft is rotationally installed on the inner clamping needle, the second shaft is movably arranged on the inner clamping needle, one end of the second shaft is further fixedly connected to the outer winding needle, and the first shaft drives the second shaft to move axially through the adjusting structures when rotating. And the second shaft moves axially to drive the outer winding needle to move away from or face the inner clamping needle, so that the size of the winding needle mechanism is adjusted to wind battery cells with different sizes. According to the winding needle mechanism disclosed by the utility model, the second shaft is driven to move axially by rotating the first shaft, so that the distance between the outer winding needle and the inner clamping needle is adjusted, and the size of the winding needle mechanism is adjusted, so that the winding needle mechanism can wind battery cells of different models.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a winding needle mechanism for winding electric cores. Background Art

[0002] Currently, about 30 different models of electric cores are experimentally produced on the PTO pilot line, and all are small-batch A-B sample trial productions or DOE verification trials of materials. When the number of turns of the electric core is fixed, the size is determined by the outer diameter of the winding needle. The winding needle sizes for different-sized coil cores are quite different. Therefore, there are about more than 10 kinds of winding needles with different outer diameters on the pilot line for replacement when winding and producing different models of electric cores.

[0003] The model on the pilot line is changed frequently. When producing different models, winding needles with different circumferences need to be replaced, and frequent replacement causes certain wear to the equipment mechanism. Moreover, for each newly developed size of electric core, resources need to be re-spent to customize the winding needle, wasting manpower, material resources and financial resources. In addition, when making coil cores of the same size, due to the difference in material thickness, the circumference of the winding needle needs to be finely adjusted. Usually, the method is to add or subtract gaskets in the middle of the winding needle, or directly paste Teflon on the surface. This method cannot accurately achieve the required circumference of the winding needle, resulting in defects in the production of electric cores. Summary of the Utility Model

[0004] The utility model provides a winding needle mechanism. By rotating the first shaft, the second shaft is driven to axially move, thereby adjusting the distance between the outer winding needle and the inner clamping needle, and then adjusting the size of the winding needle mechanism, so that the winding needle mechanism can wind different models of electric cores to solve the above technical problems.

[0005] The technical solution of the utility model to solve the above problems is: to provide a winding needle mechanism for winding electric cores, including an inner clamping needle and an outer winding needle. The outer winding needle is movably arranged on the inner clamping needle; a first shaft and a second shaft are arranged on the inner clamping needle. The first shaft and the second shaft are provided with an adjusting structure that meshes and connects with each other. The first shaft is rotatably installed on the inner clamping needle, and the second shaft is movably arranged on the inner clamping needle. One end of the second shaft is also fixedly connected to the outer winding needle. When the first shaft rotates, the second shaft is driven to axially move through the adjusting structure, and the second shaft axially moves to drive the outer winding needle to move away from or towards the inner clamping needle, thereby adjusting the size of the winding needle mechanism to wind different-sized electric cores.

[0006] Further, there are two inner clamping needles, and the two inner clamping needles are arranged oppositely, and both of the two inner clamping needles are fixedly connected to the output rotating shaft of the winding motor used to drive the entire winding needle mechanism to rotate; there are also two outer winding needles, and each of the two outer winding needles is installed on an inner clamping needle, and the two outer winding needles are also arranged oppositely. When the first shaft rotates to drive the second shaft to move through the adjusting structure, the second shaft drives the outer winding needle to move, so that the distance between the two outer winding needles changes, thereby adjusting the size of the winding needle mechanism to wind different-sized electric cores.

[0007] Furthermore, a limiting slot is provided on the outer winding needle, and the inner clamping needle is movably inserted into the limiting slot of the outer winding needle to be in limiting movable connection with the outer winding needle.

[0008] Furthermore, the adjusting structure includes a continuous tooth structure axially provided on the second shaft and a gear provided on the first shaft, and the gear is meshed and connected with the continuous tooth structure.

[0009] Furthermore, a cavity is formed between the inner clamping needle and the outer winding needle, and both the first shaft and the second shaft are arranged in the cavity.

[0010] Furthermore, a limiting post is also provided in the cavity. The second shaft is a sleeve structure and is movably sleeved on the limiting post. The second shaft is also fixedly connected with the outer winding needle, and the continuous tooth structure is arranged on the outer side of the second shaft.

[0011] Furthermore, the continuous tooth structure is a rack structure axially arranged on the outer side of the second shaft or a ring tooth structure continuously arranged on the outer side of the second shaft along the axial direction of the second shaft.

[0012] Furthermore, stoppers are provided on the inner side of the second shaft and the outer side of the limiting post. The second shaft and the limiting post are mutually blocked and limited by the stoppers to prevent the second shaft from moving away from the limiting post.

[0013] Furthermore, bearings are provided at both ends of the first shaft, and the first shaft is rotationally installed in the cavity through the bearings.

[0014] Furthermore, it further includes an adjusting motor provided on the outer side of the inner clamping needle. One end of the first shaft also extends to the outer side of the inner clamping needle to be in transmission connection with the output rotating shaft of the adjusting motor.

[0015] Advantages of the present utility model:

[0016] For a winding needle mechanism of the present utility model, by movably arranging the outer winding needle on the inner clamping needle and arranging the first shaft and the second shaft between the inner clamping needle and the outer winding needle, the first shaft drives the second shaft to axially move when rotating through the adjusting structure, and further drives the outer winding needle connected with the second shaft to correspondingly move away from or close to the inner clamping needle, thereby adjusting the overall size of the winding needle mechanism to adapt to different types of battery core winding operations, improving the battery core winding quality, and also reducing the manufacturing cost of the winding needle mechanism. Description of the Drawings

[0017] The accompanying drawings incorporated herein and constituting a part of this specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model. In these drawings, like reference numerals are used to represent like elements. The drawings in the following description are some embodiments of the present utility model, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is the overall structure diagram of the needle winding mechanism of this embodiment;

[0019] Figure 2 is the front view structure diagram of the needle winding mechanism of this embodiment;

[0020] Figure 3 is Figure 2 the sectional view taken along the A-A plane in

[0021] Figure 4 is the side view structure diagram of the needle winding mechanism of this embodiment;

[0022] Figure 5 is Figure 4 the sectional view taken along the B-B plane in

[0023] Figure 6 is Figure 5 the partial enlarged view C of

[0024] 1 - inner clamping needle, 2 - outer winding needle, 3 - first shaft, 4 - second shaft, 5 - limit slot, 6 - continuous tooth structure, 7 - gear, 8 - limit post, 9 - stop block, 10 - cavity, 11 - adjustment motor. Detailed implementation manners

[0025] In this specification, the orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc., which are mentioned or may be mentioned, are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may therefore change accordingly depending on their different positions and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0026] First of all, it should be noted that in order to relatively clearly show the connection and cooperation structure between the inner clamping needle 1 and the outer winding needle 2, the Figure 1 , Figure 2 , Figure 5 , Figure 6 in this embodiment all hide the winding motor and the bearing, Figure 3 , Figure 4 in this embodiment only hide the winding motor.

[0027] Please refer to Figure 1 and Figure 4 , a needle winding mechanism of a specific embodiment of the present utility model includes two inner clamping needles 1 and two outer winding needles 2. The two inner clamping needles 1 are arranged oppositely, and both of the two inner clamping needles 1 are in transmission connection with the output rotating shaft of the winding motor. The inner clamping needle 1 is a long strip-shaped plate body, and the outer winding needle 2 is a semi-cylindrical structure. The two outer winding needles 2 are respectively movably arranged on the two inner clamping needles 1, and the two outer winding needles 2 are symmetrical to each other. In this regard, the two outer winding needles 2 and the two inner clamping needles 1 can jointly form a needle winding approximately in the shape of a cylinder, and the winding motor drives the two inner clamping needles 1 to rotate synchronously, thereby driving the entire needle winding to rotate, so as to wind the bobbin around the outside of the two outer winding needles 2; moreover, technicians can also adjust the distance between the outer winding needle 2 and the inner clamping needle 1 movably arranged therewith to adjust the distance between the two outer winding needles 2, thereby changing the shape and size of the entire needle winding, so as to adapt to the winding requirements of different model sizes of battery cores.

[0028] Specifically, please refer to Figure 2 , Figure 3 , and Figure 5 , taking the orientation shown in Figure 2 as an example, the two inner clamping needles 1 are arranged vertically and oppositely. An outer winding needle 2 is provided at each of the upper end of the upper inner clamping needle 1 and the lower end of the lower inner clamping needle 1. And for the upper inner clamping needle 1 and the outer winding needle 2, the lower inner clamping needle 1 and the outer winding needle 2 are the same as them in terms of specific structure and installation method, etc. Therefore, only the upper inner clamping needle 1 and the outer winding needle 2 will be specifically described below.

[0029] Please refer to Figure 3 , taking the upper inner clamping needle 1 and the outer winding needle 2 as the object, a structure cavity is provided inside the outer winding needle 2, and a structure groove is provided in the upper region of the inner clamping needle 1. And when the outer winding needle 2 is installed on the inner clamping needle 1, the structure cavity and the structure groove jointly form a cavity 10. In addition, through holes are provided on the left and right groove walls of the structure groove, and bearings are installed in both of the two through holes. The left end of the first shaft 3 is installed to the bearing of the left through hole to the left, the right end of the first shaft 3 is installed to the bearing of the right through hole to the right, and the left end of the first shaft 3 also extends out to the outside of the left end of the inner clamping needle 1 and is coaxially and fixedly connected to the output rotating shaft of the adjusting motor 11.

[0030] Please refer to Figure 5, taking the inner clamping needle 1 and the outer winding needle 2 arranged at the top as the object, a limited slot 5 is provided at the lower center position of the outer winding needle 2, and the upper end of the inner clamping needle 1 is inserted into the limited slot 5; both through holes are also vertically provided with vertical holes connected to the limited slot 5 of the outer winding needle 2, and the second shaft 4 is inserted in the vertical hole, the diameter of the vertical hole is larger than the diameter of the second shaft 4, the upper end of the second shaft 4 is integrally fixedly connected with the outer winding needle 2, and a continuous tooth structure 6 is provided on the outer side of the second shaft 4, and a gear 7 is provided on the first shaft 3, and the gear 7 is meshed with the continuous tooth structure 6. In this regard, the technician can adjust the motor 11 to drive the first shaft 3 to rotate around its own axis, thereby rotating the gear 7, and push the second shaft 4 to move vertically up and down in the vertical hole through the gear 7 and the continuous tooth structure 6, thereby vertically moving the outer winding needle 2 up and down, thereby adjusting the spacing between the outer winding needle 2 and the inner clamping needle 1 to adjust the overall size of the winding needle mechanism.

[0031] For further information, see Figure 6 , taking the inner clamping needle 1 and the outer winding needle 2 arranged at the top as the object, in this embodiment, a limiting column 8 is also vertically fixed in the vertical hole, and the second shaft 4 is correspondingly set as a sleeve structure of the hollow channel, and the second shaft 4 is movably sleeved on the limiting column 8, and a stopper 9 is provided at the lower end opening of the hollow channel of the second shaft 4 and the upper end of the limiting column 8, and the gap between the side wall of the stopper 9 at the upper end of the limiting column 8 and the inner wall of the hollow channel of the second shaft 4 is less than 1 mm, so as to improve the stability of the lifting and lowering movement of the second shaft 4, thereby preventing the second shaft 4 from shaking during the lifting and lowering movement and causing the continuous tooth structure 6 to be out of meshing with the gear 7.

[0032] It should be noted that: in the present embodiment, the continuous tooth structure 6 is a plurality of annular teeth, and the plurality of annular teeth are vertically and continuously arranged outside the second shaft 4; however, in other embodiments, the continuous tooth structure 6 can also be configured as a rack structure that only exists on one side of the second shaft 4 that contacts the gear 7, and the rack structure extends vertically.

[0033] Moreover, in other embodiments, under the premise of ensuring that the inner clamping needle 1 is fixedly connected to the output rotating shaft of the winding motor, the outer winding needle 2 can be other shapes, such as a columnar structure with a cross-section that is not a 180° fan-shaped structure, a triangular prism structure, etc., and the inner clamping needle 1 and the outer winding needle 2 can be provided with only one each, or can be provided with three or more each.

[0034] In addition, in this embodiment, Figure 2 Taking the orientation shown in as an example, the two first shafts 3 arranged at the upper and lower positions are each coaxially fixedly connected to the output rotating shaft of an adjusting motor 11; however, in other embodiments, the two first shafts 3 can also be connected to the output rotating shaft of an adjusting motor 11 through a gear 7 transmission structure, and this gear 7 transmission structure can also be an existing gear structure in which several gears 7 are meshed and connected to each other.

[0035] Where not mentioned above, the prior art shall apply.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bobbin winding mechanism for winding an electric core, characterized in that, It includes an inner clamping needle (1) and an outer winding needle (2), and the outer winding needle (2) is movably arranged on the inner clamping needle (1); a first shaft (3) and a second shaft (4) are provided on the inner clamping needle (1), and the first shaft (3) and the second shaft (4) are provided with an adjusting structure that meshes and connects with each other. The first shaft (3) is rotatably installed on the inner clamping needle (1), the second shaft (4) is movably arranged on the inner clamping needle (1), and one end of the second shaft (4) is also fixedly connected to the outer winding needle (2). When the first shaft (3) rotates, the second shaft (4) is driven to axially move through the adjusting structure, and the second shaft (4) axially moves to drive the outer winding needle (2) to move away from or towards the inner clamping needle (1), so as to adjust the size of the winding needle mechanism to wind electric cores of different sizes.

2. The coiling needle mechanism according to claim 1, wherein There are two inner clamping needles (1), and the two inner clamping needles (1) are arranged oppositely, and both of the two inner clamping needles (1) are fixedly connected to the output rotating shaft of a winding motor used to drive the entire winding needle mechanism to rotate; there are also two outer winding needles (2), and each of the two outer winding needles (2) is installed on an inner clamping needle (1), and the two outer winding needles (2) are also arranged oppositely. When the first shaft (3) rotates to drive the second shaft (4) to move through the adjusting structure, the second shaft (4) drives the outer winding needle (2) to move, so that the distance between the two outer winding needles (2) changes, and further adjusts the size of the winding needle mechanism to wind electric cores of different sizes.

3. The coiling needle mechanism according to claim 1, characterized in that, A limit slot (5) is provided on the outer winding needle (2), and the inner clamping needle (1) is movably inserted into the limit slot (5) of the outer winding needle (2) to be in limit movable connection with the outer winding needle (2).

4. The coiling needle mechanism according to claim 1, characterized in that, The adjusting structure includes a continuous tooth structure (6) axially arranged on the second shaft (4) and a gear (7) arranged on the first shaft (3), and the gear (7) is meshed and connected with the continuous tooth structure (6).

5. The coiling needle mechanism according to claim 4, wherein, There is a cavity (10) between the inner clamping needle (1) and the outer winding needle (2), and both the first shaft (3) and the second shaft (4) are arranged in the cavity (10).

6. The coiling needle mechanism according to claim 5, characterized in that, A limit post (8) is also provided in the cavity (10), the second shaft (4) is a sleeve structure, the second shaft (4) is movably sleeved on the limit post (8), the second shaft (4) is also fixedly connected to the outer winding needle (2), and the continuous tooth structure (6) is arranged on the outer side of the second shaft (4).

7. The needle winding mechanism according to claim 6, characterized in that, The continuous tooth structure (6) is a rack structure axially arranged on the outer side of the second shaft (4) or a ring tooth structure continuously arranged on the outer side of the second shaft (4) along the axis direction of the second shaft (4).

8. The coiling needle mechanism according to claim 6, wherein Blocks (9) are provided on the inner side of the second shaft (4) and the outer side of the limit post (8), and the second shaft (4) and the limit post (8) are mutually blocked and limited by the blocks (9) to prevent the second shaft (4) from moving away from the limit post (8).

9. The coiling needle mechanism according to claim 5, wherein Bearings are provided at both ends of the first shaft (3), and the first shaft (3) is rotatably installed in the cavity (10) through the bearings.

10. The coiling needle mechanism according to claim 1, characterized in that, It further includes an adjusting motor (11) arranged on the outer side of the inner clamping needle (1), and one end of the first shaft (3) also extends to the outer side of the inner clamping needle (1) to be in transmission connection with the output rotating shaft of the adjusting motor (11).

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