Double Inserting Needle Winding Mechanism of Lithium Battery Winding Machine

Abstract

The present invention discloses a double-inserting needle mechanism for a lithium battery winding machine, which includes a reel main body. The reel main body is composed of an outer shaft, a middle shaft and a needle joint that are longitudinally connected in sequence. First inserts and second inserts are respectively arranged at the longitudinal two ends of the needle joint. A first insert slider and a second insert slider are arranged between the middle shaft and the needle joint. The inserts are drawn out from both sides. After the inserts are drawn out, in the thickness direction, with the thickness center line as the center line, physical space is reserved on both sides for the battery cell to release the deformation in subsequent processes.

Description

Technical Field

[0001] The present invention relates to some components of a lithium battery winding machine, and particularly to a double-inserting winding needle mechanism of a lithium battery winding machine. Background Art

[0002] A lithium battery winding machine is an important part of lithium battery production equipment, which has a great influence on the quality and life of the battery. The design of the lithium battery winding machine is an important factor affecting the production quality of the battery. In the winding machine, the winding needle mechanism for a square lithium battery automatic winding machine is a relatively key component. However, when making a relatively thick lithium battery core (such as more than 10MM thick), the traditional winding needle mechanism can only extract the insert piece unilaterally and needs to insert it twice, which will result in a large, uneven, and asymmetric single-sided space in the thickness direction of the lithium battery, and there are defects in improving the deformation of the battery core.

[0003] Therefore, we need to provide a winding needle mechanism for a lithium battery winding machine to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-inserting winding needle mechanism for a lithium battery winding machine to effectively solve the above technical problems.

[0005] To effectively solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] A double-inserting winding needle mechanism of a lithium battery winding machine includes a reel main body, which is composed of an outer shaft, a middle shaft, and a winding needle joint longitudinally connected in sequence. First and second insert pieces are respectively arranged at the longitudinal two ends of the winding needle joint, and first and second insert piece sliders are arranged between the middle shaft and the winding needle joint.

[0007] Particularly, the first insert piece is drivingly connected to the first insert piece slider to achieve insertion.

[0008] Particularly, the second insert piece is drivingly connected to the second insert piece slider to achieve insertion.

[0009] Particularly, a winding needle is arranged on the winding needle joint.

[0010] Particularly, the middle shaft is slidably connected to the outer shaft.

[0011] The beneficial effects of the present invention are as follows: A double-inserting needle mechanism for a lithium battery winding machine provided by the present invention. When working, the central shaft slides in and out to push the needle joint and drive the needle to the working position. The outer shaft rotates and drives the needle to rotate and wind through the central shaft and the needle joint. When the needle rotates and winds a certain number of turns, the first insert is driven by the first insert slider to insert out. When the needle rotates and winds a certain number of turns again, the second insert is driven by the second insert slider to insert out again. When the needle rotates and winds until the winding is completed, the inserts are pulled out from both sides. After the inserts are pulled out, in the thickness direction, with the thickness center line as the center line, physical spaces are reserved on both sides for the battery cell to release the deformation in subsequent processes.

[0012] The present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the structural composition of the present invention. Specific Embodiments

[0014] Embodiment 1:

[0015] As Figure 1 shown, this embodiment provides the overall structural setting of the double-inserting needle mechanism for a lithium battery winding machine:

[0016] It includes a reel main body, which is composed of an outer shaft 1, a central shaft 2 and a needle joint 3 connected longitudinally in sequence. First inserts 4 and second inserts 5 are respectively arranged at both longitudinal ends of the needle joint 3. A first insert slider 6 and a second insert slider 7 are arranged between the central shaft 2 and the needle joint 3.

[0017] The first insert 4 is drivingly connected to the first insert slider 6 to achieve insertion. The second insert 5 is drivingly connected to the second insert slider 7 to achieve insertion. A needle 8 is arranged on the needle joint 3. The central shaft 2 is slidably connected to the outer shaft 1.

[0018] The applicant declares that those skilled in the art in the technical field, on the basis of the above embodiments, combine a certain step of the above embodiments with the technical solutions in the content of the invention, thereby generating a new method, which is also within the scope of the present invention. For the sake of simplicity of the specification of this application, other implementation manners of these steps will not be listed.

[0019] Specifically as follows:

[0020] In this embodiment, a sliding groove is formed on the central shaft 2, and the insert sliders (the first insert slider 6 and the second insert slider 7) are installed in the sliding groove, which facilitates the sliding of the insert sliders during operation and realizes the one-time winding of the thick battery. When working, the central shaft 2 slides in and out to push the winding needle joint 3 and drive the winding needle 8 to the working position. The outer shaft 1 rotates to drive the winding needle 8 to rotate and wind through the central shaft 2 and the winding needle joint 3. When the winding needle 8 rotates and winds a certain number of turns, the first insert 4 is driven by the first insert slider 6 to insert the insert out. When the winding needle 8 rotates and winds a certain number of turns again, the second insert 5 is driven by the second insert slider 7 to insert the insert out again. The winding needle 8 rotates and winds until the winding is completed, and the inserts are pulled out from both sides. After the inserts are pulled out, in the thickness direction, with the thickness center line as the center line, physical space is reserved on both sides for the battery cell to release the deformation in the subsequent process.

[0021] The applicant further declares that the present invention uses the above embodiments to illustrate the implementation method and device structure of the present invention, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above methods and structures to be implemented. Those skilled in the art should understand that any improvement to the present invention, the equivalent replacement of the implementation method selected by the present invention, the addition of steps, and the selection of specific methods all fall within the protection scope and disclosure scope of the present invention.

[0022] The above description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention. Therefore, without departing from the design spirit of the present invention, any equivalent changes or decorations made by those ordinary engineering and technical personnel in the art to the structure, features, and principles described in the present invention should fall within the protection scope of the patent application of the present invention.

Claims

1. A double-inserting needle mechanism for a lithium battery winding machine, characterized in that, It includes a reel body which is composed of an outer shaft, a middle shaft and a bobbin joint that are longitudinally connected in sequence. First inserts and second inserts are respectively provided at both longitudinal ends of the bobbin joint. A first insert slider and a second insert slider are provided between the middle shaft and the bobbin joint. The first insert is drivingly connected to the first insert slider to achieve insertion, and the second insert is drivingly connected to the second insert slider to achieve insertion. A bobbin is provided on the bobbin joint. The middle shaft is slidably connected to the outer shaft. When working, the middle shaft slides in and out to push the bobbin joint and drive the bobbin to the working position. The outer shaft rotates to drive the bobbin to rotate and wind through the middle shaft and the bobbin joint. When the bobbin rotates and winds a certain number of turns, the first insert is driven by the first insert slider to insert out. When the bobbin rotates and winds a certain number of turns again, the second insert is driven by the second insert slider to insert out again. When the bobbin rotates and winds until the winding is completed, the inserts are pulled out from both sides.

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