CN212810376U

CN212810376U - Winding needle structure of power battery winding machine

Info

Publication number: CN212810376U
Application number: CN202021632409.2U
Authority: CN
Inventors: 李学军; 灿瑞
Original assignee: Dongguan Hongyu Intelligent Equipment Co ltd
Current assignee: Dongguan Hongyu Intelligent Equipment Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-03-26
Anticipated expiration: 2030-08-07

Abstract

The utility model relates to a winding needle structure of a power battery winding machine, which comprises a winding shaft, a push rod, a hoop connecting seat, a winding needle fixing seat, a first slider, a second slider, a guide rod, a spring, an upper cam bearing, a lower cam bearing, an outer movable needle mounting seat, an outer movable needle, an inner movable needle, an outer fixed needle mounting seat, an outer fixed needle and an inner fixed needle, wherein in a normal state, the upper spring elastically drives the first slider and the lower spring elastically drives the second slider to enable the upper cam bearing and the lower cam bearing to be in a close state, the inner movable needle and the inner fixed needle are in a good opening state to facilitate a diaphragm to penetrate into the winding core, when the winding shaft needs to rotate the winding core, the push rod is inserted between the upper cam bearing and the lower cam bearing, the inner movable needle moves inwards to press the inner fixed needle to clamp the diaphragm, the outer movable needle moves outwards to keep a reference inner size when the winding core, the winding needle structure is reasonable in design, has the advantages of convenient diaphragm threading, stable diaphragm clamping, convenient needle drawing and the like.

Description

Winding needle structure of power battery winding machine

Technical Field

The utility model relates to a power lithium cell production facility field, concretely relates to power battery coiler roll up needle structure.

Background

A power battery winder is called as a power lithium ion battery winder, and is mechanical equipment for manufacturing a power lithium ion battery, wherein the power lithium ion battery consists of a positive plate, a negative plate, a diaphragm, a pole lug and the like, the power lithium ion battery is much larger than the general lithium ion battery in size, a winding needle is one of the most important parts in a plurality of parts of the power battery winder, the quality of the structure of the winding needle directly influences the winding and forming of an electric core, and the winding needle has two functions, wherein firstly, the winding needle is used for penetrating the diaphragm in the winding station, the diaphragm is stably clamped and then wound to drive a left pole piece and a right pole piece to be wound together to form a naked electric core, secondly, the winding needle is required to be opened in time to draw the needle in the needle drawing unloading station, the existing winding needle has simple structural design, and the risks of scratching the diaphragm when the winding needle is drawn out due to unstable closing of the winding needle or poor needle, the unstable closing of the winding needle and the difficulty in drawing the needle are always the pain points in the industry and the directions of lifting and breaking through of manufacturers of winding machines and equipment.

SUMMERY OF THE UTILITY MODEL

There is the defect to prior art, the utility model provides a power battery winder's book needle structure, concrete technical scheme is as follows:

a winding needle structure of a power battery winding machine comprises a winding shaft, a push rod, a hoop connecting seat, a winding needle fixing seat, a first slide block, a second slide block, a guide rod, a spring, an upper cam bearing, a lower cam bearing, an outer movable needle mounting seat, an outer movable needle, an inner movable needle, an outer fixed needle mounting seat, an outer fixed needle and an inner fixed needle, wherein the winding needle fixing seat is connected with the winding shaft through the hoop connecting seat, the push rod is sleeved in the winding shaft, the front end of the push rod penetrates through the hoop connecting seat and extends into the winding needle fixing seat, the inner cavity of the winding needle fixing seat is provided with the first slide block and the second slide block, the guide rod is sleeved in the first slide block and the second slide block, the spring is arranged between the first slide block and the upper wall of the winding needle fixing seat, the upper cam bearing is arranged behind the first slide block, the spring is arranged between the second slide block and the lower wall of the winding needle fixing seat, the lower cam bearing is arranged, the outer movable needle is installed on the outer side of the outer movable needle installation seat, the inner movable needle is installed in the front of the second sliding block, the outer fixed needle installation seat is fixedly installed at the front end of the winding needle fixing seat, the inner fixed needle is installed in the outer fixed needle installation seat, and the outer fixed needle is installed on the outer side of the outer fixed needle installation seat.

As an optimized scheme of the utility model, roll up the needle fixing base and constitute by the integrative last fixing base of fixed connection and lower fixing base, go up the fixing base rear and be equipped with the cylinder and be convenient for embrace the ring connecting seat installation, the outer needle mount pad of fixing base front end installation down.

As an optimized scheme of the utility model, the outer fixed needle mount pad internally mounted shell fragment, the barrier film of fixed needle elasticity centre gripping electricity core in the shell fragment drive.

As a preferred proposal of the utility model, the external movable needle and the external fixed needle are round needles or elliptical needles.

As an optimized proposal of the utility model, the front supporting seat of the needle is rolled up by the front end cartridge of the outer movable needle mounting seat, the outer fixed needle mounting seat and the inner movable needle.

The utility model has the advantages that: under the normal state, the upper spring elastically drives the first sliding block, the lower spring elastically drives the second sliding block to enable the upper cam bearing and the lower cam bearing to be in a close state, at the moment, the inner movable needle and the inner fixed needle are in a good opening state to facilitate the diaphragm to penetrate into the inner movable needle and the inner fixed needle, when a winding shaft needs to rotate to wind the battery cell, the push rod is inserted between the upper cam bearing and the lower cam bearing, the upper cam bearing and the lower cam bearing are in a far state, the inner movable needle moves inwards to press the inner fixed needle to clamp the diaphragm, the outer movable needle moves outwards to open and maintain the reference inner size when the battery cell is wound, after winding is finished, the first sliding block and the second sliding block reset, the inner movable needle and the inner fixed needle open and the outer movable needle retracts to facilitate needle extraction, the winding needle is reasonable in structural design, and has the advantages of convenience in diaphragm penetrating.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the utility model with the winding shaft, the push rod, the hoop connecting seat and the winding needle fixing seat hidden;

fig. 3 is an exploded view of the present invention;

FIG. 4 is a structural sectional view of the present invention

FIG. 5 is a perspective view of the present invention after the needle holder is hidden;

FIG. 6 is an enlarged view at A in FIG. 5;

fig. 7 is a perspective view of the outer needle of the present invention in an oval shape.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

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 indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

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 as appropriate by those of ordinary skill in the art.

As shown in fig. 1 to 6, a winding needle structure of a power battery winding machine includes a winding shaft 1, a push rod 2, a hoop connecting seat 3, a winding needle fixing seat 4, a first slide block 5, a second slide block 6, a guide rod 7, a spring 8, an upper cam bearing 9, a lower cam bearing 10, an outer movable needle mounting seat 11, an outer movable needle 12, an inner movable needle 13, an outer fixed needle mounting seat 14, an outer fixed needle 15, and an inner fixed needle 16, wherein the winding needle fixing seat 4 is connected to the winding shaft 1 through the hoop connecting seat 3, the winding shaft 1 is driven by a winding mechanism of the winding machine to perform a winding cell operation, the push rod 2 is sleeved in the winding shaft 1, the front end of the push rod 2 passes through the hoop connecting seat 3 and extends into the winding needle fixing seat 4, the first slide block 5 and the second slide block 6 are installed in an inner cavity of the winding needle fixing seat 4, the guide rod 7 is installed in the first slide block 5 and the second slide block 6, the spring 8 is installed between the first slide block 5, an upper cam bearing 9 is installed behind the first slider 5, a spring 8 is installed between the second slider 6 and the lower wall of the winding needle fixing seat 4, a lower cam bearing 10 is installed behind the second slider 6, an outer movable needle mounting seat 11 is installed in front of the first slider 5, an outer movable needle 12 is installed outside the outer movable needle mounting seat 11, an inner movable needle 13 is installed in front of the second slider 6, an outer fixed needle mounting seat 14 is fixedly installed at the front end of the winding needle fixing seat 4, an inner fixed needle 13 is installed inside the outer fixed needle mounting seat 14, and an outer fixed needle 15 is installed outside the outer fixed needle mounting seat 14.

Specifically, as shown in fig. 3, the winding needle fixing seat 4 is composed of an upper fixing seat 41 and a lower fixing seat 42 which are fixedly connected into a whole, a cylinder is arranged behind the upper fixing seat 41, so that the winding ring connecting seat 3 can be installed conveniently, the outer fixing needle mounting seat 14 is installed at the front end of the lower fixing seat 42, in addition, the elastic sheet 18 is installed inside the outer fixing needle mounting seat 14, the elastic sheet 18 drives the isolating membrane of the electric core to be elastically clamped by the inner fixing needle 16, and the membrane is prevented from being damaged due to too tight clamping.

As shown in fig. 1 and 7, the outer movable needle and the outer fixed needle are circular needles or elliptical needles suitable for different specifications of battery cells, the front end of the outer movable needle mounting seat 11, the front end of the outer fixed needle mounting seat 14 and the front end of the inner movable needle 13 are inserted into the front support seat 17 of the winding needle, the front support seat 17 of the winding needle plays an auxiliary support, the inner and outer movable needles can stably rotate to wind the battery cells, and the inner movable needle 13 can better keep in a fixed compression state to clamp the diaphragm.

Under a normal state, the upper spring 8 elastically drives the first slider 5, the lower spring 8 elastically drives the second slider 6 to enable the upper cam bearing 9 and the lower cam bearing 10 to be in a close state, at the moment, the inner movable needle 13 and the inner fixed needle 16 are in a good opening state to facilitate the diaphragm to penetrate into the upper cam bearing 9 and the lower cam bearing 10, when a winding shaft needs to rotate to wind the cell, the air cylinder is adopted to push the push rod 2, the push rod 2 is inserted between the upper cam bearing 9 and the lower cam bearing 10 to enable the upper cam bearing 9 and the lower cam bearing 10 to be opened and kept away, the upper cam bearing 9 and the lower cam bearing 10 are in a far state, the upper cam bearing 9 and the lower cam bearing 10 respectively drive the first slider 5 and the second slider 6 to move, the first slider 5 drives the outer movable needle 12 to move outwards, the second slider 6 drives the inner movable needle 13 to move inwards, the inner movable needle 13 moves inwards to press the inner fixed needle 16 to clamp the diaphragm, the outer movable needle 12 moves outwards, after winding, the first sliding block 5 and the second sliding block 6 are reset, the inner movable needle 13 and the inner fixed needle 16 are opened, the outer movable needle 12 retracts at the same time, and needle drawing is convenient.

The above description is provided for the purpose of describing the present invention in more detail with reference to the preferred embodiments, and it should not be construed that the present invention is limited to these descriptions, and it will be apparent to those skilled in the art that the present invention can be implemented in many ways without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a power battery winder's book needle structure which characterized in that: comprises a winding shaft, a push rod, a clasping ring connecting seat, a winding needle fixing seat, a first slide block, a second slide block, a guide rod, a spring, an upper cam bearing, a lower cam bearing, an outer moving needle mounting seat, an outer moving needle, an inner moving needle, an outer fixed needle mounting seat, an outer fixed needle and an inner fixed needle, wherein the winding needle fixing seat is connected with the winding shaft through the clasping ring connecting seat, the push rod is sleeved in the winding shaft, the front end of the push rod penetrates through the clasping ring connecting seat and extends into the winding needle fixing seat, a first slide block and a second slide block are arranged in an inner cavity of the winding needle fixing seat, the guide rod is sleeved in the first slide block and the second slide block, the spring is arranged between the first slide block and the upper wall of the winding needle fixing seat, the upper cam bearing is arranged behind the first slide block, the spring is arranged between the second slide block and the lower wall of the winding needle fixing seat, the lower cam bearing is arranged behind the second slide, an inner movable needle is installed in the front of the second sliding block, an outer fixed needle installation seat is fixedly installed at the front end of the winding needle fixing seat, an inner fixed needle is installed in the outer fixed needle installation seat, and an outer fixed needle is installed outside the outer fixed needle installation seat.

2. The winding needle structure of the power battery winding machine according to claim 1, characterized in that: the winding needle fixing seat is composed of an upper fixing seat and a lower fixing seat which are fixedly connected into a whole, a cylinder is arranged behind the upper fixing seat and is convenient for mounting the hoop connecting seat, and an outer fixed needle mounting seat is mounted at the front end of the lower fixing seat.

3. The winding needle structure of the power battery winding machine according to claim 1, characterized in that: the elastic sheet is arranged in the outer fixed needle mounting seat and drives the inner fixed needle to elastically clamp the isolating membrane of the battery core.

4. The winding needle structure of the power battery winding machine according to claim 1, characterized in that: the outer movable needle and the outer fixed needle are round needles or oval needles.

5. The winding needle structure of the power battery winding machine according to claim 1, characterized in that: the outer movable needle mounting seat, the outer fixed needle mounting seat and the front support seat of the inner movable needle for inserting the winding needle.