Lock mouth mechanism of lithium battery winding machine

Abstract

The utility model provides a lithium battery winding machine lock mouth mechanism, which comprises a servo motor, a lock mouth, a guide post and a follower capable of moving along the axis direction of the servo motor, the outer surface of the guide post is provided with a spiral cam groove, the guide post is connected with the output end of the servo motor, and the servo motor is connected with the lock mouth. One end of the follower is arranged in the cam groove, and the lock mouth is connected with the follower. The action of the lock mouth is driven by the servo motor, the response speed is improved, the cam groove drives the follower to stretch out and retract, noise is reduced, the decibel value is reduced, in addition, the stretching acceleration or speed of the lock mouth can be controlled, no obvious impact exists, and the mechanism stability is good.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery winding machines, in particular to a locking mechanism for a lithium battery winding machine. Background Art

[0002] The winding needle opening and closing mechanism of the lithium battery bare cell winding machine in the prior art is that the outer needle of the winding needle is retracted and the inner needle is in an open state under normal conditions. When the winding needle extends through the diaphragm, the opening and closing cylinder installed behind the winding needle seat pushes the ejector pin, pushing open the two cam followers of the winding needle seat, driving the outer needle of the winding needle to open and the inner needle to close, clamping the diaphragm. Subsequently, the locking mouth (outer needle mouth) extends out, and after the winding needle mouth is guided in by a tapered sleeve, the closing action is performed based on the principle that the outer needle of the winding needle changes from small to large and the inner needle changes from large to small because of the change in the inner diameter.

[0003] The locking mouth can rotate along with the winding needle. The linear motion of the locking mouth is generally driven directly by a cylinder. The locking mouth mechanism driven by a cylinder has the following disadvantages: (1) The action of the cylinder is triggered by an induction switch, which causes a delay and affects the timing of the winding action; (2) The cylinder does not accelerate or decelerate, and is an impact contact. The opening and closing of the winding needle causes a large noise, and a popping sound is heard. Utility Model Content

[0004] The utility model provides a locking mechanism for a lithium battery winding machine to solve at least one of the above technical problems.

[0005] To solve the above problems, as one aspect of the utility model, a locking mouth mechanism of a lithium battery winding machine is provided, comprising: a servo motor, a locking mouth, a guide column, and a follower movable along the axial direction of the servo motor, wherein a spiral cam groove is provided on the outer surface of the guide column, the guide column is connected to the output end of the servo motor, one end of the follower is arranged in the cam groove, and the locking mouth is connected to the follower.

[0006] Preferably, the follower is connected to the lock mouth via a fixing seat.

[0007] Preferably, the follower comprises a roller.

[0008] The action of the lock mouth in the utility model is driven by a servo motor, which improves the response speed. The cam groove drives the follower to extend and retract, which reduces noise and decibel value. In addition, the acceleration or speed of the lock mouth extension and retraction can be controlled without obvious impact, and the mechanism has good stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The three-dimensional diagram of the utility model is schematically shown;

[0010] Figure 2 The front view of the utility model is schematically shown;

[0011] Figure 3 Schematically shows Figure 2 AA section view.

[0012] The reference numerals in the figure are: servo motor 1; lock mouth 2; guide column 3; follower 4; cam groove 5; fixed seat 6; roller 7; inner needle of winding needle 8; outer needle of winding needle 9; winding needle seat 10; follower 11; opening and closing ejector 12; opening and closing cylinder 13; needle threading servo motor 14; reducer 15. DETAILED DESCRIPTION

[0013] The following is a detailed description of the embodiments of the present invention, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0014] As one aspect of the utility model, a locking mouth mechanism of a lithium battery winding machine is provided, comprising: a servo motor 1, a locking mouth 2, a guide column 3, and a follower 4 movable along the axial direction of the servo motor 1, wherein a spiral cam groove 5 is provided on the outer surface of the guide column 3, the guide column 3 is connected to the output end of the servo motor 1, one end of the follower 4 is arranged in the cam groove 5, and the locking mouth 2 is connected to the follower 4.

[0015] Preferably, the follower 4 is connected to the lock mouth 2 via a fixing seat 6 .

[0016] Preferably, the follower 4 comprises a roller 7 , and the roller 7 is placed in the cam groove 5 .

[0017] In a preferred embodiment, the lithium battery winding machine also includes a needle winding mechanism that cooperates with the locking mechanism of the lithium battery winding machine in the utility model, wherein the needle winding mechanism can adopt a conventional structure in the prior art, which will not be described in detail here. For example, the needle winding mechanism can include an inner needle 8, an outer needle 9, a needle winding seat 10, a follower 11, an opening and closing ejector 12, an opening and closing cylinder 13, a needle threading servo motor 14, etc. These parts are arranged, assembled or assembled in a conventional manner in the prior art to achieve the function of a conventional needle winding.

[0018] During operation, after the servo motor 1 is started, the guide column 3 and the cam groove 5 thereon are driven to rotate. Since the cam groove 5 is spiral and the follower 4 can move along the axial direction of the servo motor 1, the follower 4 with one end arranged in the cam groove 5 drives the locking mouth 2 to move closer to or away from the winding needle mechanism, so that the bell mouth (with a tapered inner hole and outer circle) on the locking mouth 2 contacts with the outer needle and the inner needle of the winding needle. When the inner needle of the winding needle is closed and the outer needle is expanded and locked stably at the head and tail, the winding needle can clamp the diaphragm.

[0019] In the above technical solution, the telescopic action of the lock mouth 2 in the utility model is driven by the servo motor 1, and the follower 4 is driven to extend and retract through the cam groove 5. In this way, the telescopic acceleration or speed of the lock mouth 2 can be controlled by the rotation speed of the servo motor 1.

[0020] In the utility model, the action of the lock mouth 2 is driven by the servo motor 1, which improves the response speed. The cam groove 5 drives the follower 4 to extend and retract, which reduces noise and decibel value. In addition, the acceleration or speed of the extension and retraction of the lock mouth 2 can be controlled without obvious impact, and the mechanism has good stability.

[0021] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A locking mechanism for a lithium battery winding machine, characterized in that: include: A servo motor (1), a lock mouth (2), a guide column (3), and a follower (4) movable along the axis of the servo motor (1); a spiral cam groove (5) is provided on the outer surface of the guide column (3); the guide column (3) is connected to the output end of the servo motor (1); one end of the follower (4) is arranged in the cam groove (5); and the lock mouth (2) is connected to the follower (4).

2. The locking mechanism of the lithium battery winding machine according to claim 1, characterized in that: The follower (4) is connected to the lock mouth (2) via a fixing seat (6).

3. The locking mechanism of the lithium battery winding machine according to claim 1, characterized in that: The follower (4) comprises a roller (7).

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