CN218975493U

CN218975493U - Needle mechanism is rolled up to variable diameter

Info

Publication number: CN218975493U
Application number: CN202222948122.6U
Authority: CN
Inventors: 张云磊; 严海宏; 曾令辉; 陈杰
Original assignee: Dongguan Yakang Precision Machinery Co Ltd
Current assignee: Dongguan Yakang Precision Machinery Co Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-05-05
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a variable-diameter needle rolling mechanism which comprises a needle rolling main body composed of a first half shaft and a second half shaft, wherein a variable-diameter movable block accommodating groove is formed in the outer side of the first half shaft, a variable-diameter movable block is movably arranged in the variable-diameter movable block accommodating groove up and down through a pin shaft, a variable-diameter movable block driving assembly is arranged in the first half shaft and comprises a transmission shaft and a deep groove ball bearing, a guide groove with one end communicated with the outside is formed in the first half shaft, the transmission shaft is movably arranged in the guide groove, a clearance groove is formed in the position, corresponding to the pin shaft, of the guide groove, an upward-inclined bearing rolling groove is formed in the side wall of the transmission shaft, the deep groove ball bearing is arranged on the bearing rolling groove in a rolling mode, and a sliding groove corresponding to the deep groove ball bearing is formed in the inner side of the variable-diameter movable block. According to the utility model, when the tabs are not aligned, the distance difference between the tabs can be eliminated by quickly changing the circumference of the winding needle, so that the tabs are aligned, the production quality of the battery core can be ensured, and the production efficiency is improved.

Description

Needle mechanism is rolled up to variable diameter

Technical Field

The utility model relates to the technical field of battery production, in particular to a variable-diameter winding needle mechanism.

Background

In the manufacturing process of the lithium battery cell, the pole piece and the diaphragm are rolled into the cell according to certain requirements through a series of actions of the winding head module. The alignment degree of the lugs on the pole pieces is an important parameter of the quality of the battery cell, sometimes the produced lithium battery cell is scrapped because the edges of the positive pole lugs and the negative pole lugs on the side edges of the battery cell are not aligned due to the difference of the thickness of the pole pieces, and the circumference of the winding needle is changed to be a method for aligning the lugs.

At present, in the lithium battery industry or other winding industries, the winding needle is fixed, so that the winding diameter is fixed; when the winding diameter needs to be adjusted, the winding diameter of the winding needle can be increased or reduced only by replacing the winding needle or attaching a glue film on the winding needle, but the method is very time-consuming and labor-consuming, and the adjustment precision is very low. Thereby influencing the production quality of the battery cell and the overall production efficiency.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a variable-diameter winding needle mechanism, which can eliminate the distance difference between the tabs by rapidly changing the circumference of a winding needle when the tabs are not aligned, so that the tabs are aligned, the production quality of an electric core can be ensured, and the production efficiency is improved.

The technical scheme of the utility model is as follows:

the utility model provides a needle mechanism is rolled up to variable diameter, includes the needle main part of rolling up the face in the outside formation by first semi-axis and second semi-axis, the inboard of first semi-axis is installed first interior folder through first interior needle file, the inboard of second semi-axis is installed the second and is gone up the folder through the interior needle file of second, the reducing movable block accommodation groove has been seted up in the outside of first semi-axis, the reducing movable block accommodation inslot is provided with the reducing movable block through the round pin axle activity from top to bottom, install the reducing movable block drive assembly who reciprocates with the drive reducing movable block in the first semi-axis, reducing movable block drive assembly includes transmission shaft, deep groove ball bearing, be equipped with the guide way of one end and outside intercommunication in the first semi-axis, the transmission shaft activity sets up in the guide way, the position that the guide way corresponds the round pin axle is equipped with keeps away the empty groove, the lateral wall of transmission shaft is equipped with the bearing rolling groove of upwards slope, the deep groove ball bearing rolling arrangement is on the bearing rolling groove, the inboard of reducing movable block is equipped with the sliding groove that corresponds with deep groove ball bearing.

Further, the variable-diameter movable block is movably arranged through a front pin shaft and a rear pin shaft.

Further, the variable-diameter movable block driving assembly further comprises a tension spring, and the tension spring is connected between the first half shaft and the variable-diameter movable block.

Further, two tension springs are arranged in front of and behind the tension spring.

Further, the reducing movable block driving assembly further comprises a spring and an end cover, wherein the spring is connected between the extending end of the transmission shaft and the end cover, and the end cover is fixed in the first half shaft.

Further, the variable-diameter movable block driving assembly further comprises two oil-free self-lubricating bushings arranged front and back, and the two oil-free self-lubricating bushings are in sliding fit with the transmission shaft.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a reducing movable block containing groove which is arranged on the outer side of a first half shaft, a reducing movable block is movably arranged in the reducing movable block containing groove up and down through a pin shaft, a reducing movable block driving component which is used for driving the reducing movable block to move up and down is arranged in the first half shaft, the reducing movable block driving component comprises a transmission shaft and a deep groove ball bearing, the side wall of the transmission shaft is provided with an upward inclined bearing rolling groove, the deep groove ball bearing is arranged on the bearing rolling groove in a rolling way, the inner side of the reducing movable block is provided with a sliding groove corresponding to the deep groove ball bearing, and the reducing movable block is lifted by the bearing rolling groove and the deep groove ball bearing when the transmission shaft moves so as to change the circumference of the whole winding needle, so that when the polar lugs are aligned, the distance difference between the polar lugs can be eliminated by quickly changing the circumference of the winding needle, the polar lug is aligned, the production quality of an electric core can be ensured, and the production efficiency can be improved. The mechanism has the advantages of simple structure, low cost, convenient installation, changeable stroke and high precision, and can reduce product scrapping and save machine adjustment time for a power winding machine in the lithium electricity industry.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the structure of the utility model before diameter changing;

FIG. 2 is a side view of the present utility model;

FIG. 3 is a cross-sectional view of the structure of FIG. 2C-C;

fig. 4 is a schematic view of the structure of the present utility model after diameter change.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In order to illustrate the technical scheme of the utility model, the following description is made by specific examples.

Examples

Referring to fig. 1-4, the present embodiment provides a variable diameter needle rolling mechanism, including a needle rolling main body 1 with a rolling surface formed by a first half shaft 11 and a second half shaft 12, the rolling of a diaphragm is achieved by the needle rolling main body 1, a first inner clamping piece 3 is installed on the inner side of the first half shaft 11 through a first inner needle seat 2, a second inner clamping piece 5 is installed on the inner side of the second half shaft 12 through a second inner needle seat 4, clamping of the diaphragm is achieved by the first inner clamping piece 3 and the second inner clamping piece 5, a variable diameter movable block accommodating groove is provided on the outer side of the first half shaft 11, a variable diameter movable block 7 is movably arranged in the variable diameter movable block accommodating groove up and down through front and rear pin shafts 6, a variable diameter movable block driving assembly 8 for driving the variable diameter movable block 7 to move up and down is installed in the first half shaft 11, and the variable diameter movable block 7 is driven to move up and down so as to achieve adjustment of the whole outer circumference of the needle rolling, namely, the variable diameter needle rolling is achieved.

Specifically, the reducing movable block driving assembly 8 comprises a transmission shaft 81, a deep groove ball bearing 82, a tension spring 83, a spring 84, an end cover 85 and an oil-free self-lubricating bushing 86, a guide groove with one end communicated with the outside is arranged in the first half shaft 11, the transmission shaft 81 is movably arranged in the guide groove, a clearance groove 87 is formed in the position, corresponding to the front pin shaft 6 and the rear pin shaft 6, of the guide groove, an upward-inclined bearing rolling groove 88 is formed in the side wall of the transmission shaft 81, the deep groove ball bearing 82 is arranged on the bearing rolling groove 88 in a rolling mode, sliding grooves 71 corresponding to the deep groove ball bearing 82 are formed in the inner side of the reducing movable block 7, two extension springs 83 are arranged in the front and the rear of the extension spring 83 and are connected between the first half shaft 11 and the reducing movable block 7, the spring 84 is connected between the extending end of the transmission shaft 81 and the end cover 85, the end cover 85 is fixed in the first half shaft 11, and the oil-free self-lubricating bushing 86 is provided with two oil-free self-lubricating bushings in the front and the rear of the transmission shaft 81 and is in sliding fit with the transmission shaft 81.

Structural principle: when the diameter of the transmission shaft 81 is required to be changed, the transmission shaft 81 is pushed to advance, as the bearing rolling groove 88 on the transmission shaft 81 is a slope, the deep groove ball bearing 82 lifts the diameter-changing movable block 7 through the slope when the transmission shaft 81 moves forwards, the lifting distance is controllable, in the lifting process, the front pin shaft 6 and the rear pin shaft 6 are responsible for keeping the diameter-changing movable block 7 to move in the vertical direction, the front oil-free self-lubricating bushing 86 and the rear oil-free self-lubricating bushing 86 can reduce friction, and the spring 84 and the front tension spring 83 can reset the transmission shaft 81 when the movement is finished.

The mechanism has the advantages of simple structure, low cost, convenient installation, high precision of changeable travel length, capability of eliminating the distance difference between the tabs by quickly changing the circumference of the winding needle when the tabs are not aligned, alignment of the tabs, capability of ensuring the production quality of the battery core, improvement of production efficiency, and reduction of product scrapping and saving of machine adjustment time for a power winding machine in the lithium battery industry.

The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a needle mechanism is rolled up to variable diameter, includes the needle main part of rolling up of the outside formation winding surface of constituteing by first semi-axis and second semi-axis, the inboard of first semi-axis is installed the first interior folder through first interior needle file, the inboard of second semi-axis is installed the second through the second interior needle file and is gone up folder, its characterized in that: the outside of the first half shaft is provided with a variable-diameter movable block accommodating groove, a variable-diameter movable block is movably arranged in the variable-diameter movable block accommodating groove up and down through a pin shaft, a variable-diameter movable block driving component for driving the variable-diameter movable block to move up and down is arranged in the first half shaft, the variable-diameter movable block driving component comprises a transmission shaft and a deep groove ball bearing, the novel variable-diameter ball bearing is characterized in that a guide groove with one end communicated with the outside is formed in the first half shaft, the transmission shaft is movably arranged in the guide groove, a clearance groove is formed in the position, corresponding to the pin shaft, of the guide groove, an upward-inclined bearing rolling groove is formed in the side wall of the transmission shaft, a deep groove ball bearing is arranged on the bearing rolling groove in a rolling mode, and a sliding groove corresponding to the deep groove ball bearing is formed in the inner side of the variable-diameter movable block.

2. The variable diameter needle winding mechanism of claim 1, wherein: the reducing movable block is movably arranged through a front pin shaft and a rear pin shaft.

3. The variable diameter needle winding mechanism of claim 1, wherein: the reducing movable block driving assembly further comprises a tension spring, and the tension spring is connected between the first half shaft and the reducing movable block.

4. A variable diameter needle roller mechanism according to claim 3, wherein: two tension springs are arranged at the front and the back of the tension spring.

5. The variable diameter needle winding mechanism of claim 1, wherein: the variable-diameter movable block driving assembly further comprises a spring and an end cover, wherein the spring is connected between the extending end of the transmission shaft and the end cover, and the end cover is fixed in the first half shaft.

6. The variable diameter needle winding mechanism of claim 1, wherein: the reducing movable block driving assembly further comprises two oil-free self-lubricating bushings which are arranged front and back, and the two oil-free self-lubricating bushings are in sliding fit with the transmission shaft.