CN218788397U

CN218788397U - Diameter-variable needle winding mechanism

Info

Publication number: CN218788397U
Application number: CN202222945009.2U
Authority: CN
Inventors: 陈杰; 严海宏; 曾令辉; 张云磊
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: 2023-04-04
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a needle mechanism is rolled up to variable diameter, include the book needle main part of constituteing by first semi-axis and second semi-axis, folder in first is installed to the inboard of first semi-axis, folder in the second is installed to the inboard of second semi-axis, reducing movable block storage tank has been seted up in the outside of first semi-axis, the activity is provided with the reducing movable block through the round pin axle from top to bottom in the reducing movable block storage tank, install reducing movable block drive assembly in the first semi-axis, reducing movable block drive assembly includes the transmission shaft, the bearing follower, 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 lateral wall at the transmission shaft is installed to the bearing follower, the inboard of reducing movable block is equipped with the decurrent bearing sliding tray of slope, bearing follower and bearing sliding tray sliding connection. The utility model discloses can eliminate the distance difference between the utmost point ear through the week length of quick change book needle when utmost point ear is to uneven to make utmost point ear align, can guarantee electric core production quality, improve production efficiency.

Description

Diameter-variable needle winding mechanism

Technical Field

The utility model relates to a battery production technical field, concretely relates to needle mechanism is rolled up to variable footpath.

Background

In the manufacturing process of the lithium battery cell, the pole piece and the diaphragm are coiled 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, the edges of the positive lugs and the negative lugs on the side edges of the battery cell are misaligned due to the difference of the thicknesses of the pole pieces, so that the produced lithium battery cell is rejected as unsatisfactory, and the lugs are aligned by changing the perimeter of the winding needle.

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

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides a but diameter-variable book needle mechanism, and this mechanism can eliminate the distance difference between the utmost point ear through the week that the needle was rolled up in the quick change when utmost point ear is misaligned to make utmost point ear align, can guarantee electric core production quality, improve production efficiency.

The technical scheme of the utility model as follows:

the utility model provides a needle mechanism is rolled up in variable diameter, includes and constitutes the book needle main part that the outside formed the coiling face by first semi-axis and second semi-axis, folder in first semi-axis's inboard is installed through first interior needle holder, folder in the second is installed through needle holder in the second to the inboard of second semi-axis, reducing movable block storage tank has been seted up in the outside of first semi-axis, the activity is provided with the reducing movable block through the round pin axle from top to bottom in the reducing movable block storage tank, install the reducing movable block drive assembly who reciprocates in order to drive the reducing movable block in the first semi-axis, reducing movable block drive assembly includes transmission shaft, bearing follower, 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 bearing follower is installed at the lateral wall of transmission shaft, the inboard of reducing movable block is equipped with the bearing sliding tray that inclines downwards, bearing follower and bearing sliding tray sliding connection.

Furthermore, the reducing movable block is movably arranged through a front pin shaft and a rear pin shaft.

Furthermore, install in the first semi-axis with round pin axle sliding fit's first oil-free self-lubricating bush.

Furthermore, reducing movable block drive assembly still includes the extension spring, the extension spring is connected between first semi-axis and reducing movable block.

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

Further, reducing movable block drive assembly is still including two second oil-free self-lubricating bushes that set up from beginning to end, two second oil-free self-lubricating bushes and transmission shaft sliding fit.

Furthermore, one end of the transmission shaft extends out of the guide groove, an end cover is installed at the extending end of the transmission shaft, and a spring is connected between the end cover and the first half shaft.

Furthermore, an auxiliary shaft is connected between the end cover and the first half shaft.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses the reducing movable block storage tank has been seted up in the outside of first semi-axis, it is provided with the reducing movable block to move about from top to bottom through the round pin axle in the reducing movable block storage tank, 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 the transmission shaft, the bearing follower, the inboard of reducing movable block is equipped with the decurrent bearing sliding tray of slope, the bearing follower with bearing sliding tray sliding connection is installed to the lateral wall of transmission shaft, pass through the bearing follower during the transmission shaft motion, thereby the bearing sliding tray drives the reducing movable block and reciprocates and change the girth of whole book needle, thereby can eliminate the distance difference between the utmost point ear through the girth of quick change book needle when utmost point ear is to uneven, make utmost point ear align, can guarantee electric core production quality, improve production efficiency. The mechanism is simple in structure, low in cost, convenient to install, long in changeable stroke and high in precision, and can reduce product scrap and save machine adjusting time for the power winding machine in the lithium battery industry.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view before diameter changing of the present invention;

fig. 2 is a side view of the present invention;

FIG. 3 is a structural cross-sectional view taken along line K-K in FIG. 2;

FIG. 4 is a structural cross-sectional view taken along line L-L in FIG. 2;

fig. 5 is a schematic structural view of the variable diameter movable block driving assembly of the present invention;

fig. 6 is a schematic structural diagram after diameter change of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In order to explain the technical solution of the present invention, the following description is made by using specific examples.

Examples

Referring to fig. 1 to 6, the present embodiment provides a diameter-variable needle winding mechanism, which includes a needle winding main body 1 formed by a first half shaft 11 and a second half shaft 12, and having an outer side forming a winding surface, wherein a membrane is wound by the needle winding 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 base 2, a second inner clamping piece 5 is installed on the inner side of the second half shaft 12 through a second inner needle base 4, the membrane is clamped by the first inner clamping piece 3 and the second inner clamping piece 5, a diameter-variable movable block accommodating groove is formed on the outer side of the first half shaft 11, a diameter-variable movable block 7 is movably installed in the diameter-variable movable block accommodating groove up and down through a front pin and a rear pin 6, a first oil-free self-lubricating bushing 8 slidably fitted with the pin 6 is installed in the first half shaft 11, a diameter-variable movable block driving assembly 9 for driving the diameter-variable movable block 7 to move up and down is installed in the first half shaft 11, and the diameter-variable movable block driving assembly 9 to move up and down to adjust the overall peripheral length of the needle winding, that is the needle winding diameter-variable.

Concretely, reducing movable block drive assembly 9 includes transmission shaft 91, bearing follower 92, extension spring 93 and second do not have oil self-lubricating bush 94, be equipped with the guide way of one end and outside intercommunication in the 11 first halfshafts, transmission shaft 91 activity sets up in the guide way, the lateral wall at transmission shaft 91 is installed to bearing follower 92, reducing movable block 7's inboard is equipped with the decurrent bearing sliding tray 71 of slope, bearing follower 92 and bearing sliding tray 71 sliding connection, extension spring 93 is provided with two around and connects between 11 first halfshafts and reducing movable block 7, second do not have oil self-lubricating bush 94 around be provided with two and with transmission shaft 91 sliding fit. Further, one end of the transmission shaft 91 extends out of the guide groove, an end cover 95 is installed on the extending end of the transmission shaft 91, and a spring 96 and an auxiliary shaft 97 are connected between the end cover 95 and the first half shaft 11.

The structure principle is as follows: when the diameter needs to be changed, the transmission shaft 91 is pushed to advance, because the bearing sliding groove 71 on the inner side of the diameter-changing movable block 7 is a slope, when the transmission shaft 91 moves forwards, the bearing follower 92 drives the diameter-changing movable block 7 to move up and down through the slope so as to change the circumference of the whole coiling needle, the distance of the up-and-down movement is controllable, in the moving 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 friction of the up-and-down movement of the pin shaft can be reduced by the first oil-free self-lubricating bushing 8, the back-and-forth movement friction of the transmission shaft 91 can be reduced by the second oil-free self-lubricating bushing 94, the transmission shaft 91 can be reset by the spring 96 and the front tension spring 93 and the rear tension spring 93 when the movement is finished, and the auxiliary shaft 97 can ensure that the transmission shaft 91 does not turn over in the moving process.

The mechanism is simple in structure, low in cost, convenient to install, and high in variable stroke precision, can eliminate the distance difference between the lugs by quickly changing the circumference of the winding needle when the lugs are misaligned, enables the lugs to be aligned, can ensure the production quality of the electric core, improves the production efficiency, and can reduce product scrapping and save the machine adjusting time for a power winding machine in the lithium battery industry.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a needle mechanism is rolled up to variable footpath, includes to constitute the outside by first semi-axis and second semi-axis and forms the book needle main part of face of convoluteing, folder in first is installed through first interior needle holder to the inboard of first semi-axis, folder in the second is installed through needle holder in the second to the inboard of second semi-axis, its characterized in that: the reducing movable block driving assembly is characterized in that a reducing movable block accommodating groove is formed in the outer side of the first half shaft, a reducing movable block is movably arranged in the reducing movable block accommodating groove from top to bottom through a pin shaft, a reducing movable block driving assembly used for driving the reducing movable block to move up and down is installed in the first half shaft, the reducing movable block driving assembly comprises a transmission shaft and a bearing follower, 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, the bearing follower is installed on the side wall of the transmission shaft, a bearing sliding groove inclining downwards is formed in the inner side of the reducing movable block, and the bearing follower is in sliding connection with the bearing sliding groove.

2. The variable diameter winding needle mechanism according to claim 1, characterized in that: the reducing movable block is movably arranged through a front pin shaft and a rear pin shaft.

3. The variable-diameter needle winding mechanism according to claim 1 or 2, characterized in that: a first oil-free self-lubricating bushing in sliding fit with the pin shaft is installed in the first half shaft.

4. The variable diameter winding needle mechanism according to claim 1, characterized in that: 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.

5. The variable diameter winding needle mechanism according to claim 4, wherein: two tension springs are arranged in front of and behind the tension spring.

6. The variable-diameter winding needle mechanism according to claim 1, wherein: reducing movable block drive assembly is still including two second oil-free self-lubricating bushes that set up around, two second oil-free self-lubricating bushes and transmission shaft sliding fit.

7. The variable diameter winding needle mechanism according to claim 1, characterized in that: one end of the transmission shaft extends out of the guide groove, an end cover is installed at the extending end of the transmission shaft, and a spring is connected between the end cover and the first half shaft.

8. The variable diameter winding needle mechanism according to claim 7, wherein: an auxiliary shaft is further connected between the end cover and the first half shaft.