CN221064148U

CN221064148U - Lug riveting device

Info

Publication number: CN221064148U
Application number: CN202322793463.5U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2023-10-18
Filing date: 2023-10-18
Publication date: 2024-06-04
Anticipated expiration: 2033-10-18

Abstract

The utility model relates to a tab riveting device. The tab riveting device comprises a motion seat, a pole piece punching mechanism, a tab punching mechanism and a riveting mechanism, wherein the pole piece punching mechanism, the tab punching mechanism and the riveting mechanism are all arranged on the motion seat; the motion seat can controllably move along a first preset direction so as to drive the pole piece punching mechanism, the pole lug punching mechanism and the riveting mechanism to sequentially pass through the riveting station; the pole piece punching mechanism is used for punching the pole piece at the riveting station, the pole lug punching mechanism is used for punching the flanging hole of the pole lug at the riveting station, and the riveting mechanism is used for riveting the pole piece and the pole lug at the riveting station.

Description

Lug riveting device

Technical Field

The utility model relates to the technical field of battery manufacturing equipment, in particular to a tab riveting device.

Background

In the battery manufacturing process, the tab needs to be riveted to the pole piece to realize the connection between the tab and the pole piece. The riveting process at least comprises a plurality of working procedures such as pole piece punching, pole lug punching flanging holes, riveting and the like. Because the procedures of riveting the tab and the pole piece are more, the tab and the pole piece need to be circulated among the stations, and each procedure needs to be realized by a corresponding device, so that the equipment has a complex structure and large occupied space.

Disclosure of utility model

Based on this, it is necessary to provide a tab riveting device for improving the above-mentioned defects, which aims at the problems that in the prior art, the tab and the pole piece need to circulate between each station due to a plurality of procedures of riveting the tab and the pole piece, and each procedure needs to be realized by a corresponding device, resulting in complex equipment structure and large occupied space.

The tab riveting device is used for riveting a tab to a pole piece at a riveting station and comprises a motion seat, and a pole piece punching mechanism, a tab punching mechanism and a riveting mechanism which are all arranged on the motion seat;

The motion seat can controllably move along a first preset direction so as to drive the pole piece punching mechanism, the pole lug punching mechanism and the riveting mechanism to sequentially pass through the riveting station; the pole piece punching mechanism is used for punching the pole piece at the riveting station, the pole lug punching mechanism is used for punching the flanging hole of the pole lug at the riveting station, and the riveting mechanism is used for riveting the pole piece and the pole lug at the riveting station.

In one embodiment, the pole piece punching mechanism comprises a first transferring seat and a first upper cutter part arranged on the first transferring seat, and the first transferring seat is movably connected to the motion seat along a second preset direction; the tab riveting device further comprises a matching platform arranged on the motion seat, wherein the matching platform is provided with a first lower cutter part which is oppositely arranged with the first upper cutter part in the second preset direction;

When the first upper cutter part and the first lower cutter part move to the riveting station along with the moving seat, the first transfer seat can controllably drive the first upper cutter part to be close to or far away from the first lower cutter part along the second preset direction so as to punch a pole piece between the first upper cutter part and the first lower cutter part.

In one embodiment, the tab riveting device further comprises a driving mechanism, the driving mechanism comprises a first cam rotatably connected to the motion seat, the pole piece punching mechanism further comprises a first follower wheel rotatably connected to the first transfer seat, the first cam is in rolling fit with the first follower wheel, and when the first cam rotates, the first transfer seat can be driven to reciprocate along the second preset direction through the first follower wheel.

In one embodiment, the pole piece punching mechanism further comprises a first pre-tightening elastic piece, one end of the first pre-tightening elastic piece is connected to the first transfer seat, and the other end of the first pre-tightening elastic piece is connected to the moving seat; the first pre-tightening elastic piece is used for providing a pre-tightening force which enables the first transfer base to have a movement trend along the second preset direction and close to the first cam.

In one embodiment, the tab punching mechanism includes a second transferring seat and a second upper knife part disposed on the second transferring seat, and the second transferring seat is movably connected to the moving seat along a second preset direction; the tab riveting device further comprises a matching platform arranged on the motion seat, wherein the matching platform is provided with a second lower cutter part which is arranged opposite to the second upper cutter part in the second preset direction;

When the second upper cutter part and the second lower cutter part move to the riveting station along with the moving seat, the second transfer seat can controllably drive the second upper cutter part to be close to or far away from the second lower cutter part along the second preset direction so as to punch a flanging hole on a pole piece between the second upper cutter part and the second lower cutter part.

In one embodiment, the second lower blade portion has a punching matching hole for the second upper blade portion to enter, the tab punching mechanism further comprises a support and a material ejection rod, the support is mounted on the second transfer seat, one end of the material ejection rod is connected to the support, and the other end of the material ejection rod penetrates into the punching matching hole from one side of the second lower blade portion, which is away from the second upper blade portion.

In one embodiment, the tab riveting device further comprises a driving mechanism, the driving mechanism comprises a second cam rotatably connected to the motion seat, the tab punching mechanism further comprises a second follower rotatably connected to the second transfer seat, and the second cam is in rolling fit with the second follower, so that the second cam can drive the second transfer seat to reciprocate along the second preset direction through the second follower when rotating.

In one embodiment, the tab punching mechanism further includes a second pre-tightening elastic member, one end of the second pre-tightening elastic member is connected to the second transfer seat, the other end of the second pre-tightening elastic member is connected to the moving seat, and the second pre-tightening elastic member is used for providing a pre-tightening force that makes the second transfer seat have a movement trend along the second preset direction close to the second cam.

In one embodiment, the riveting mechanism comprises a third transferring seat and an upper riveting part arranged on the third transferring seat, and the third transferring seat is movably connected to the motion seat along a second preset direction; the tab riveting device further comprises a matching platform arranged on the motion seat, wherein the matching platform is provided with a lower riveting part which is oppositely arranged with the upper riveting part in the second preset direction;

When the upper riveting part and the lower riveting part move to the riveting station along with the moving seat, the third transferring seat can controllably drive the upper riveting part to be close to or far away from the lower riveting part along the second preset direction so as to rivet the tab and the pole piece between the upper riveting part and the lower riveting part.

In one embodiment, the tab riveting device further comprises a driving mechanism, the driving mechanism comprises a third cam rotatably connected to the moving seat, the riveting mechanism further comprises a third follower rotatably connected to the third transfer seat, and the third cam is in rolling fit with the third follower, so that the third cam can drive the third transfer seat to reciprocate along the second preset direction through the third follower when rotating.

In one embodiment, the riveting mechanism further includes a third pre-tightening elastic member, one end of the third pre-tightening elastic member is connected to the third transfer seat, the other end of the third pre-tightening elastic member is connected to the moving seat, and the third pre-tightening elastic member is used for providing a pre-tightening force that makes the third transfer seat have a movement trend along the second preset direction close to the third cam.

In one embodiment, the tab riveting device further includes a fixed seat and a fourth follower wheel rotatably connected to the fixed seat, and the moving seat is movably connected to the fixed seat along the first preset direction;

The lug riveting device further comprises a driving mechanism, the driving mechanism comprises a fourth cam rotatably connected to the motion seat, the fourth cam is in rolling fit with the fourth follower, and the motion seat can be driven to reciprocate along the first preset direction through the fourth follower when the fourth cam rotates.

In one embodiment, the drive mechanism further comprises a first cam, a second cam, a third cam, a rotation shaft, and a rotation drive; the rotary shaft is rotatably connected to the motion seat around the axis of the rotary shaft, and the rotary driving piece is connected with the rotary shaft and used for driving the rotary shaft to rotate around the axis of the rotary shaft relative to the motion seat; the first cam, the second cam, the third cam and the fourth cam are all mounted on the rotating shaft to synchronously rotate following the rotating shaft;

The pole piece punching mechanism is provided with a first follower wheel in rolling fit with the first cam, and the first cam can drive the pole piece punching mechanism to punch a pole piece through the first follower wheel when rotating; the tab punching mechanism is provided with a second follower wheel in rolling fit with the second cam, and the tab punching mechanism can be driven to punch the flanging hole through the second follower wheel when the second cam rotates; the riveting mechanism is provided with a third follower wheel in rolling fit with the third cam, and the third cam can drive the riveting mechanism to rivet the pole piece and the pole lug through the third follower wheel when rotating.

In one embodiment, the pole piece punching mechanism simultaneously punches a plurality of riveting holes on the pole piece, and the pole lug punching mechanism simultaneously punches a plurality of flanging holes on the pole lug; the plurality of riveting holes are in one-to-one correspondence with the plurality of flanging holes, and the flanging forming each flanging hole penetrates through the corresponding riveting hole.

According to the tab riveting device, in the actual use process, firstly, the pole piece is conveyed downstream until the position, which needs to be riveted with the tab, of the pole piece reaches the riveting station. Then, the motion seat moves along a first preset direction until the pole piece punching mechanism is driven to reach the riveting station, so that the pole piece is punched by the pole piece punching mechanism. And then, feeding the tab to the pole piece and covering the riveting hole on the pole piece. And then, the motion seat continuously moves along the first preset direction until the lug punching mechanism is driven to reach the riveting station, so that the lug punching mechanism is utilized to punch the flanging hole of the lug. And then, the motion seat continuously moves along the first preset direction until the riveting mechanism is driven to reach the riveting station, so that the lug and the pole piece are riveted by the riveting mechanism, and the riveting fixation of the lug and the pole piece is completed.

Therefore, the pole piece punching mechanism, the pole lug punching mechanism and the riveting mechanism are integrally arranged on the moving seat, and the pole piece punching mechanism, the pole lug punching mechanism and the riveting mechanism are driven by the moving seat to sequentially reach the riveting station so as to respectively complete corresponding actions to realize riveting fixation of the pole lug and the pole piece, so that the structure of the pole lug riveting device is greatly simplified, and the occupied space is reduced.

Drawings

FIGS. 1 to 4 are schematic views illustrating a step of riveting a tab and a pole piece according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a tab riveting device according to an embodiment of the present utility model;

FIG. 6 is a schematic structural view of a pole piece punching mechanism of the tab riveting device shown in FIG. 5;

FIG. 7 is a schematic view of the relationship between the first upper blade and the mating platform in the pole piece punching mechanism shown in FIG. 6;

FIG. 8 is a schematic structural view of a pole piece punching mechanism, a pole piece punching mechanism and a mating platform in the pole piece riveting device shown in FIG. 5;

FIG. 9 is a schematic view of a tab punching mechanism of the tab riveting device shown in FIG. 1;

FIG. 10 is a schematic view of the tab punching mechanism of FIG. 9 in another view;

FIG. 11 is a schematic structural view of a riveting mechanism in the tab riveting device shown in FIG. 5;

FIG. 12 is a cross-sectional view of the riveting mechanism shown in FIG. 11;

FIG. 13 is a schematic view of a driving mechanism of the tab riveting device shown in FIG. 5;

Fig. 14 is a schematic diagram of an assembly structure of the first pre-tightening elastic member, the moving seat and the first transferring seat of the pole piece punching mechanism shown in fig. 6.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 4, for easy understanding, before describing the tab riveting device of the present application in detail, a process of riveting the tab A2 and the pole piece A1 will be described: first, referring to fig. 1, a rivet hole a11 is formed in the pole piece A1 by punching, that is, punching, on the pole piece A1. Then, referring to fig. 2, tab A2 is placed on pole piece A1 and covers rivet hole a11 on pole piece A1. Then, referring to fig. 3, the tab A2 is punched with a flanging hole a21 at the riveting hole a11, that is, the flanging hole a21 is formed on the tab A2 by punching, and the flanging at the flanging hole a21 is located in the through riveting hole a11. Finally, referring to fig. 4, the tab A2 and the pole piece A1 are pressed on both sides of the pole piece A1, so that the flange on one side of the pole piece A1 facing away from the tab A2 is continuously turned outwards to form a riveting structure, that is, the tab A2 and the pole piece A1 are riveted and fixed.

Referring to fig. 5, an embodiment of the present utility model provides a tab riveting device for riveting a tab A2 to a pole piece A1 at a riveting station (not shown). The tab riveting device comprises a motion seat 10, a pole piece punching mechanism 20, a tab punching mechanism 30 and a riveting mechanism 40 which are all arranged on the motion seat 10. The moving seat 10 can controllably move along a first preset direction X to drive the pole piece punching mechanism 20, the pole lug punching mechanism 30 and the riveting mechanism 40 to sequentially pass through the riveting stations. The pole piece punching mechanism 20 is used for punching the pole piece A1 at a riveting station, namely punching a riveting hole a11 on the pole piece A1. The tab punching mechanism 30 is used for punching the flanging hole a21 on the tab A2 at the riveting station, that is, punching the flanging hole a21 on the tab. The riveting mechanism 40 is used for riveting the pole piece A1 and the pole tab A2 at a riveting station, so that the pole tab A2 is riveted and fixed on the pole piece A1.

In the practical use process of the tab riveting device, firstly, the pole piece A1 is conveyed downstream until the position of the pole piece A1, which needs to be riveted with the tab A2, reaches the riveting station. Then, the motion seat 10 moves along the first preset direction X until the pole piece punching mechanism 20 is driven to reach the riveting station, so that the pole piece A1 is punched by the pole piece punching mechanism 20 (see fig. 1). Then, the tab A2 is fed onto the tab A1 (see fig. 2), and covers the riveting hole a11 on the tab A1 (the tab A2 may be fed manually or automatically by a feeding mechanism, which is not limited herein). Then, the motion seat 10 continues to move along the first preset direction X until the tab punching mechanism 30 is driven to reach the riveting station, so that the tab A2 is punched with the tab punching mechanism 30 to form a flanging hole a21 (see fig. 4). Then, the moving seat 10 continues to move along the first preset direction X until the riveting mechanism 40 is driven to reach the riveting station, so that the tab A2 and the pole piece A1 are riveted by the riveting mechanism 40 to complete riveting and fixing of the tab A2 and the pole piece A1 (see fig. 4).

In this way, the pole piece punching mechanism 20, the pole lug punching mechanism 30 and the riveting mechanism 40 are integrally arranged on the moving seat 10, and the pole piece punching mechanism 20, the pole lug punching mechanism 30 and the riveting mechanism 40 are driven by the moving seat 10 to sequentially reach the riveting station so as to respectively complete corresponding actions to realize riveting fixation of the pole lug A2 and the pole piece A1, thereby greatly simplifying the structure of the pole lug riveting device and reducing the occupied space.

Referring to fig. 6 to 8, in the embodiment of the application, the pole piece punching mechanism 20 includes a first transfer base 22 and a first upper cutter 23. The first transfer base 22 is movably connected to the motion base 10 along a second predetermined direction Y. The first upper blade portion 23 is provided on the first transfer base 22 so as to move together with the first transfer base 22. The tab riveting device further comprises a matching platform 50 mounted on the motion seat 10, the matching platform 50 is provided with a first lower knife part 51 which is oppositely arranged with the first upper knife part 23 in the second preset direction Y, and the pole piece A1 passes through between the first upper knife part 23 and the first lower knife part 51.

When the first upper blade portion 23 and the first lower blade portion 51 move to the riveting station along the first preset direction X along the movement seat 10, the first transfer seat 22 can controllably drive the first upper blade portion 23 to approach or depart from the first lower blade portion 51 along the second preset direction Y so as to punch the pole piece A1 located between the first upper blade portion 23 and the first lower blade portion 51.

Thus, when the pole piece A1 needs to be punched, firstly, the moving seat 10 moves along the first preset direction X until the first upper cutter portion 23 and the first lower cutter portion 51 are driven to reach the riveting station. At this time, the portion of the pole piece A1 to be punched is located between the first upper blade portion 23 and the first lower blade portion 51. Then, the first transfer seat 22 drives the first upper cutter 23 to approach the first lower cutter 51 until the first upper cutter 23 and the first lower cutter 51 cooperate to realize punching on the pole piece A1. Then, the first transfer base 22 drives the first upper blade 23 to be reset away from the first lower blade 51. It should be noted that the second preset direction Y intersects with the first preset direction X. Preferably, the second preset direction Y is perpendicular to the first preset direction X.

Further, the first upper cutter portion 23 is a needle punch, and the first lower cutter portion 51 is provided with a blanking hole 510 into which the first upper cutter portion 23 enters, so that the pole piece A1 is punched by matching the first upper cutter portion 23 with the blanking hole 510 on the first lower cutter portion 51. The gap between the first upper blade portion 23 and the blanking hole 510 may be designed according to the thickness of the pole piece A1, so long as the pole piece A1 can be punched, and is not limited herein.

Further, the pole piece punching mechanism 20 also includes a first presser plate 27 (see fig. 8) and a first elastic member 28 (see fig. 8). The first pressing plate 27 is disposed on a side of the first transferring base 22 facing the matching platform 50, and can be close to or far from the first transferring base 22, for pressing the pole piece A1 on the matching platform 50. The first elastic member 28 is abutted between the first pressing plate 27 and the first transferring base 22, and is used for providing a pre-tightening force for enabling the first pressing plate 27 to have a movement trend away from the first transferring base 22 (i.e. moving close to the matching platform 50). Alternatively, the first elastic member 28 may employ a spring.

Thus, when the pole piece A1 needs to be punched, firstly, the moving seat 10 moves along the first preset direction X until the first upper cutter portion 23 and the first lower cutter portion 51 are driven to reach the riveting station. Then, the first transfer seat 22 drives the first upper blade portion 23 to gradually approach the first lower blade portion 51. At the same time, the first pressing plate 27 also follows the first transfer base 22 to gradually approach the matching platform 50 until the pole piece A1 is pressed against the matching platform 50. As the first transfer seat 22 continues to drive the first upper blade portion 23 to approach the first lower blade portion 51, the first elastic member 28 is further compressed until the first upper blade portion 23 and the first lower blade portion 51 cooperate to punch the pole piece A1. Then, the first transferring base 22 drives the first upper blade portion 23 to reset away from the first lower blade portion 51, and at the same time, the first pressing plate 27 also resets along with the first transferring base 22 away from the matching platform 50.

Alternatively, the first pressing plate 27 is movably connected to the first transfer base 22 by a guide rod, i.e. the movement of the first pressing plate 27 relative to the first transfer base 22 in the second preset direction Y is guided by the guide rod.

Optionally, pole piece punching mechanism 20 further includes a first mount 25 fixedly attached to motion housing 10. The first transfer seat 22 is movably connected with the first mounting seat 25 through the first guide pillar 24, that is, the first guide pillar 24 is utilized to guide the movement of the first transfer seat 22 relative to the first mounting seat 25 and the movement seat 10 along the second preset direction Y. In other embodiments, other guiding mechanisms, such as a guide rail, may be used to guide the movement of the first transfer base 22 along the second preset direction Y relative to the motion base 10, which is not limited herein.

Referring to fig. 9 and 10, in the embodiment of the application, the tab punching mechanism 30 includes a second transfer base 32 and a second upper blade 33. The second transfer base 32 is movably connected to the motion base 10 along a second predetermined direction Y. The second upper blade 33 is provided on the second transfer base 32 so as to move together with the second transfer base 32. The engaging platform 50 has a second lower blade portion 52 disposed opposite to the second upper blade portion 33 in the second preset direction Y, and the pole piece A1 passes between the second upper blade portion 33 and the second lower blade portion 52.

When the second upper blade portion 33 and the second lower blade portion 52 move to the riveting station along the first preset direction X along the moving seat 10, the second transfer seat 32 can controllably drive the second upper blade portion 33 to approach or depart from the second lower blade portion 52 along the second preset direction Y, so as to punch the flanging hole a21 on the tab A2 on the pole piece A1 located between the second upper blade portion 33 and the second lower blade portion 52.

In this way, when the tab A2 on the pole piece A1 needs to be punched with the flanging hole a21, first, the moving seat 10 moves along the first preset direction X until the second upper blade portion 33 and the second lower blade portion 52 are driven to reach the riveting station. At this time, the tab A2 on the pole piece A1 is located between the second upper blade 33 and the second lower blade 52. Then, the second transfer seat 32 drives the second upper blade 33 to approach the second lower blade 52 along the second preset direction Y until the second upper blade 33 and the second lower blade 52 cooperate to punch the flanging hole a21 on the tab A2. Then, the second transfer base 32 drives the second upper blade 33 to reset away from the second lower blade 52 along the second preset direction Y.

Further, the second upper blade portion 33 is a needle punch, and the second lower blade portion 52 is provided with a press fit hole 520 (see fig. 7) into which the second upper blade portion 33 enters, so that the tab A2 is punched with the flange hole a21 by the second upper blade portion 33 being matched with the press fit hole 520 on the second lower blade portion 52. The gap between the second upper blade 33 and the press-fit hole 520 may be designed according to factors such as the thickness of the tab A2, so long as the tab A2 can be punched into the flanging hole a21, and is not limited herein.

Further, the tab punching mechanism 30 further includes a second pressing plate (not shown) and a second elastic member (not shown). The second pressing plate is disposed at a side of the second transferring base 32 facing the second lower knife 52, and can move close to or away from the second transferring base 32, so as to press the pole piece A1 onto the matching platform 50. The second elastic piece is abutted between the second pressing plate and the second transferring base 32, and is used for providing a pretightening force for enabling the second pressing plate to have a movement trend of moving towards the matching platform 50. Alternatively, the second elastic member may employ a spring.

In this way, when the tab A2 needs to be punched with the flanging hole a21, first, the moving seat 10 moves along the first preset direction X until the second upper blade portion 33 and the second lower blade portion 52 are driven to reach the riveting station. Then, the second transfer base 32 drives the second upper blade 33 to gradually approach the second lower blade 52. Meanwhile, the second pressing plate also follows the second transferring base 32 to gradually approach the matching platform 50 until the pole piece A1 is pressed on the matching platform 50. Along with the second transfer seat 32 continuing to drive the second upper blade 33 to approach the second lower blade 52, the second elastic member is further compressed until the second upper blade 33 and the second lower blade 52 cooperate to punch the flanging hole a21 on the tab A2. Then, the second transferring base 32 drives the second upper blade 33 to be reset away from the second lower blade 52, and at the same time, the second pressing plate also resets along with the second transferring base 32 away from the matching platform 50.

Alternatively, the second pressing plate is movably connected with the second transferring base 32 through a guide rod, that is, the guide rod is used to guide the movement of the second pressing plate relative to the second transferring base 32 along the second preset direction Y.

Optionally, the tab punching mechanism 30 further includes a second mount 37 fixedly connected to the motion base 10. The second transfer base 32 is movably connected to the second mounting base 37 by a second guide post 36, that is, the second guide post 36 is used to guide the movement of the second transfer base 32 relative to the second mounting base 37 and the movement base 10 along the second preset direction Y. In other embodiments, other guiding mechanisms, such as a guide rail, may be used to guide the movement of the second transfer base 32 along the second preset direction Y relative to the motion base 10, which is not limited herein.

Further, the tab punching mechanism 30 further includes a bracket 34 and a ejector rod 35. The rack 34 is mounted on the second transfer base 32. One end of the ejector rod 35 is fixedly connected to the bracket 34, and the other end of the ejector rod 35 penetrates into the punching fit hole 520 from one end of the second lower cutter portion 52, which is away from the second upper cutter portion 33. In this way, while the second transfer seat 32 drives the second upper blade portion 33 to move towards the second lower blade portion 52 to punch the flanging hole a21 on the tab A2, the ejector rod 35 follows the second transfer seat 32 to move towards the second lower blade portion 52 away from the second upper blade portion 33, so as to avoid interference caused by the movement of the ejector rod 35 to the second upper blade portion 33 entering the punching mating hole 520. While the second transfer seat 32 drives the second upper blade portion 33 to move away from the second lower blade portion 52, the ejector rod 35 moves towards the second upper blade portion 33 along the punching fit hole 520 along the second transfer seat 32 until the lug A2 flanging entering the punching fit hole 520 is ejected out of the punching fit hole 520, so that the lug A2 flanging is prevented from being blocked in the punching fit hole 520 and the fit platform 50 is prevented from moving along the second preset direction Y along the moving seat 10.

Alternatively, the pole piece punching mechanism 20 simultaneously punches a plurality of rivet holes a11 into the pole piece A1. The tab punching mechanism 30 simultaneously punches a plurality of flanging holes a21 in the tab A2. The riveting holes A11 are in one-to-one correspondence with the flanging holes A21, and the flanging forming each flanging hole A21 penetrates through the corresponding riveting hole A11, so that after riveting by the riveting mechanism 40, each riveting hole A11 is provided with a riveting structure, and the connection between the tab A2 and the pole piece A1 is firmer.

Further, the number of the first upper blade portions 23 is plural, and the first transfer base 22 drives each of the first upper blade portions 23 thereon to simultaneously punch the pole piece A1, that is, to simultaneously punch a plurality of riveting holes a11 on the pole piece A1. The second upper blade 33 is also provided in plural, and the second transfer base 32 drives each second upper blade 33 thereon to simultaneously punch the flanging hole a21 on the tab A2, that is, simultaneously form plural flanging holes a21 on the tab A2. In order to make the flange forming each flange hole a21 pass through the corresponding caulking hole a11, the first upper blade portion 23 and the second upper blade portion 33 are equal in number and arranged in the same manner.

Referring to fig. 11 to 12, in the embodiment of the application, the riveting mechanism 40 includes a third transferring base 42 and an upper riveting portion 43. The third transfer base 42 is movably connected to the motion base 10 along a second predetermined direction Y. The upper riveting part 43 is disposed on the third transferring base 42 to move together with the third transferring base 42. The above-mentioned mating platform 50 further has a lower rivet portion 53 (see fig. 7) disposed opposite to the upper rivet portion 43 in the second preset direction Y, and the pole piece A1 passes between the upper rivet portion 43 and the lower rivet portion 53.

When the upper riveting portion 43 and the lower riveting portion 53 move to the riveting station along the first preset direction X along the moving seat 10, the third transferring seat 42 can controllably drive the upper riveting portion 43 to approach or depart from the lower riveting portion 53 along the second preset direction Y, so as to rivet the pole piece A1 and the pole tab A2 between the upper riveting portion 43 and the lower riveting portion 53, so that the pole tab A2 and the pole piece A1 are riveted and fixed.

In this way, when the pole piece A1 and the pole tab A2 need to be riveted, firstly, the moving seat 10 moves along the first preset direction X until the upper riveting portion 43 and the lower riveting portion 53 are driven to reach the riveting station. At this time, the tab A2 on the pole piece A1 is located between the upper caulking portion 43 and the lower caulking portion 53. Then, the third transferring base 42 drives the upper riveting portion 43 to approach the lower riveting portion 53 along the second preset direction Y until the upper riveting portion 43 cooperates with the lower riveting portion 53 to realize the riveting of the tab A2 and the pole piece A1. Then, the third transferring base 42 drives the upper riveting portion 43 to reset away from the lower riveting portion 53 along the second preset direction Y.

Optionally, the riveting mechanism 40 further includes a third mounting seat 48 fixedly connected to the motion seat 10. The third transfer seat 42 is movably connected to the third mounting seat 48 by a third guide post 47, that is, the third guide post 47 guides the movement of the third transfer seat 42 relative to the third mounting seat 48 and the movement seat 10 along the second preset direction Y. In other embodiments, other guiding mechanisms, such as a guide rail, may be used to guide the movement of the third transfer base 42 along the second preset direction Y relative to the movement base 10, which is not limited herein.

Referring to fig. 5, 13 and 14, in the embodiment of the present application, the tab riveting device further includes a driving mechanism 60, and the driving mechanism 60 includes a first cam 61 rotatably connected to the motion base 10. The pole piece punching mechanism 20 further includes a first follower wheel 21 rotatably coupled to a first transfer base 22. The first cam 61 is in rolling fit with the first follower wheel 21, so that the first transfer seat 22 can be driven by the first follower wheel 21 to reciprocate along the second preset direction Y when the first cam 61 rotates, and the first transfer seat 22 can further drive the first upper knife part 23 to approach or separate from the first lower knife part 51. In this way, the cam transmission structure formed by the first cam 61 and the first follower wheel 21 converts the rotation motion into the reciprocating motion of the first transfer seat 22 along the second preset direction Y, so that the transmission is smooth and reliable, and the motion precision is high.

Further, the pole piece punching mechanism 20 further comprises a first pre-tightening elastic piece 29, one end of the first pre-tightening elastic piece 29 is connected to the first transfer seat 22, and the other end of the first pre-tightening elastic piece 29 is connected to the moving seat 10. The first pre-tightening elastic member 29 is configured to provide a pre-tightening force that causes the first transfer seat 22 to have a movement tendency to move closer to the first cam 61 along the second preset direction Y, so as to ensure that the first follower wheel 21 always maintains a rolling engagement with the first cam 61. Alternatively, the first pre-tightening elastic member 29 may employ a spring.

In particular embodiments, the drive mechanism 60 further includes a second cam 62 rotatably coupled to the motion base 10. The tab punching mechanism 30 further includes a second follower wheel 31 rotatably connected to the second transfer base 32. The second cam 62 is in rolling fit with the second follower wheel 31, so that the second moving and carrying seat 32 can be driven by the second follower wheel 31 to reciprocate along the second preset direction Y when the second cam 62 rotates, and the second moving and carrying seat 32 can further drive the second upper knife part 33 to approach or separate from the second lower knife part 52. In this way, the cam transmission structure formed by the second cam 62 and the second follower wheel 31 converts the rotation motion into the reciprocating motion of the second transfer seat 32 along the second preset direction Y, and the transmission process is smooth and reliable, and the motion precision is higher.

Further, the tab punching mechanism 30 further includes a second pre-tightening elastic member (not shown). One end of the second pre-tightening elastic member is connected to the second transfer seat 32, and the other end of the second pre-tightening elastic member is connected to the movement seat 10. The second pre-tightening elastic member is used for providing a pre-tightening force for enabling the second transfer base 32 to have a movement trend of approaching the second cam 62 along the second preset direction Y, so as to ensure that the second follower wheel 31 always keeps rolling fit with the second cam 62. Alternatively, the second pre-tensioned elastic member may employ a spring.

In particular embodiments, the drive mechanism 60 further includes a third cam 63 rotatably coupled to the kinematic mount 10. The riveting mechanism 40 further includes a third follower wheel 41 rotatably coupled to a third transfer base 42. The third cam 63 is in rolling fit with the third follower 41, so that the third cam 63 can drive the third transferring base 42 to reciprocate along the second preset direction Y through the third follower 41 when rotating, and further the third transferring base 42 drives the upper riveting portion 43 to approach or separate from the lower riveting portion 53. In this way, the cam transmission structure formed by the third cam 63 and the third follower wheel 41 converts the rotation motion into the linear motion of the third transfer seat 42 along the second preset direction Y, and the transmission process is smooth and reliable, and the motion precision is higher.

Further, the riveting mechanism 40 further includes a third pre-tightening elastic member (not shown). One end of the third pre-tightening elastic member is connected to the third transfer seat 42, and the other end of the third pre-tightening elastic member is connected to the movement seat 10. The third pre-tightening elastic member is used for providing a pre-tightening force for enabling the third transfer base 42 to have a movement trend of moving along the second preset direction Y close to the third cam 63, so as to ensure that the third follower wheel 41 is always kept in rolling fit with the third cam 63. Alternatively, the third pre-tensioned elastic member may employ a spring.

Referring to fig. 11 and 12, the riveting mechanism 40 further includes a floating seat 46 and a buffering elastic member 45. The floating base 46 is movably connected to the third transfer base 42 along the second predetermined direction Y. The buffer elastic member 45 is abutted between the floating seat 46 and the third transferring seat 42, and is used for providing a pre-tightening force for enabling the third transferring seat 42 to have a movement trend away from the floating seat 46 along the second preset direction Y. The third follower wheel 41 is rotatably connected to the floating mount 46. In this way, when the rotation shaft 66 rotates, the rotation shaft 66 drives the third cam 63 to rotate, so that the third cam 63 drives the upper riveting portion 43 to move along the second preset direction Y near the lower riveting portion 53 through the third follower wheel 41, the buffer elastic member 45 and the third transfer seat 42 until the upper riveting portion 43 and the lower riveting portion 53 jointly complete the riveting of the tab A2 and the pole piece A1. The buffer elastic member 45 is further compressed when the upper and lower caulking portions 43 and 53 are caulking, so that the impact applied to the tab A2 and the pole piece A1 by the upper caulking portion 43 is buffered, and the hard impact of the upper caulking portion 43 to the tab A2 and the pole piece A1 to crush the tab A2 and the pole piece A1 is avoided. Alternatively, the buffer elastic member 45 may employ a spring.

Further, the riveting mechanism 40 further includes a limiting screw 44 and a pressure sensor 49, where the limiting screw 44 includes a threaded shaft portion and a head portion fixedly connected to one end of the threaded shaft portion. The floating seat 46 is provided with a limiting hole (not shown), the threaded rod part of the limiting screw 44 is penetrated through the limiting hole and can move along the axial direction of the limiting hole, and the radial size of the head part of the limiting screw 44 is larger than that of the limiting hole. The pressure sensor 49 is fixedly mounted on the third transfer seat 42, the threaded rod portion of the limit screw 44 is in threaded connection with the pressure sensor 49, the buffer elastic member 45 is sleeved outside the limit screw 44, one end of the buffer elastic member 45 is abutted with the floating seat 46, and the other end of the buffer elastic member 45 is abutted with the third transfer seat 42 or the pressure sensor 49. Under the action of the pre-tightening force provided by the buffering elastic piece 45, the head of the limiting screw 44 abuts against the floating seat 46 to limit the floating seat 46 and the third transferring seat 42 to be away from each other. Thus, the limit screw 44 is used to limit the maximum distance between the floating seat 46 and the third transferring seat 42, so as to prevent the floating seat 46 and the third transferring seat 42 from being separated from each other. The pressure sensor 49 is used for detecting the pretightening force provided by the buffer elastic piece 45, namely, the riveting pressure is monitored when the upper riveting part 43 and the lower riveting part 53 are riveted, so that the excessive or insufficient riveting pressure applied to the tab A2 and the pole piece A1 is avoided.

In an embodiment, the tab riveting device further includes a fixing base 70 and a fourth follower wheel (not shown) rotatably connected to the fixing base 70. The motion base 10 is movably connected to the fixed base 70 along a first preset direction X. The drive mechanism 60 includes a fourth cam 64 rotatably coupled to the motion base 10. The fourth cam 64 is in rolling fit with the fourth follower, so that the fourth cam 64 can drive the moving seat 10 to reciprocate along the first preset direction X relative to the fixed seat 70 through the fourth follower when rotating, and further the moving seat 10 drives the pole piece punching mechanism 20, the tab punching mechanism 30 and the riveting mechanism 40 to sequentially pass through the riveting station. In this way, the rotation motion is converted into the reciprocating motion of the motion seat 10 along the first preset direction X through the cam transmission structure formed by the fourth cam 64 and the fourth follower wheel, the transmission process is smooth and reliable, and the motion precision is high.

In particular embodiments, the drive mechanism 60 further includes a rotation shaft 66 and a rotation drive 65. The rotary shaft 66 is rotatably connected to the motion base 10 about its own axis. The rotation driving member 65 is mounted on the motion base 10 and connected to the rotation shaft 66 for driving the rotation shaft 66 to rotate about its own axis relative to the motion base 10. The first cam 61, the second cam 62, the third cam 63, and the fourth cam 64 are mounted on the rotation shaft 66 to synchronously rotate along with the rotation shaft 66. In this way, the rotation driving member 65 drives the rotation shaft 66 to rotate, so that the rotation shaft 66 drives the first cam 61, the second cam 62, the third cam 63 and the fourth cam 64 to rotate, thereby realizing that the first transfer base 22 moves along the second preset direction Y relative to the moving base 10, the second transfer base 32 moves along the second preset direction Y relative to the moving base 10, the third transfer base 42 moves along the second preset direction Y relative to the moving base 10, and the moving base 10 moves along the first preset direction X relative to the fixing base 70.

It should be noted that, the first cam 61, the second cam 62, the third cam 63 and the fourth cam 64 are integrally disposed on the same rotation shaft 66, so that the first transfer seat 22, the second transfer seat 32, the third transfer seat 42 and the movement seat 10 can be moved only by one rotation driving member 65, which greatly simplifies the structure of the driving mechanism 60 and is beneficial to reducing the space occupied by the tab riveting device.

Of course, in other embodiments, four linear driving modules may be provided, and the four linear driving modules respectively drive the first transferring base 22 to move along the second preset direction Y, the second transferring base 32 to move along the second preset direction Y, the third transferring base 42 to move along the second preset direction Y, and the motion base 10 to move along the first preset direction X. The linear driving module may be a cylinder, a screw module, or the like, and is not limited herein.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The tab riveting device is characterized by being used for riveting a tab to a pole piece at a riveting station and comprises a moving seat, and a pole piece punching mechanism, a tab punching mechanism and a riveting mechanism which are all arranged on the moving seat;

2. The tab riveting device according to claim 1, wherein the pole piece punching mechanism comprises a first transfer seat and a first upper knife part arranged on the first transfer seat, and the first transfer seat is movably connected to the motion seat along a second preset direction; the tab riveting device further comprises a matching platform arranged on the motion seat, wherein the matching platform is provided with a first lower cutter part which is oppositely arranged with the first upper cutter part in the second preset direction;

The first transfer seat can controllably drive the first upper cutter part to approach or depart from the first lower cutter part along the second preset direction so as to punch a pole piece between the first upper cutter part and the first lower cutter part.

3. The tab riveting device of claim 2, further comprising a drive mechanism comprising a first cam rotatably coupled to the motion base, the pole piece punching mechanism further comprising a first follower rotatably coupled to the first transfer base, the first cam in rolling engagement with the first follower such that the first cam can drive the first transfer base to reciprocate in the second predetermined direction via the first follower when rotated.

4. The tab riveting device according to claim 3, wherein the pole piece punching mechanism further comprises a first pre-tightening elastic member, one end of the first pre-tightening elastic member is connected to the first transfer seat, and the other end of the first pre-tightening elastic member is connected to the moving seat; the first pre-tightening elastic piece is used for providing a pre-tightening force which enables the first transfer base to have a movement trend along the second preset direction and close to the first cam.

5. The tab riveting device according to claim 1, wherein the tab punching mechanism comprises a second transfer seat and a second upper blade portion provided on the second transfer seat, the second transfer seat being movably connected to the motion seat along a second preset direction; the tab riveting device further comprises a matching platform arranged on the motion seat, wherein the matching platform is provided with a second lower cutter part which is arranged opposite to the second upper cutter part in the second preset direction;

The second transfer seat can controllably drive the second upper cutter part to approach or depart from the second lower cutter part along the second preset direction so as to punch the flanging hole on the pole piece between the second upper cutter part and the second lower cutter part.

6. The tab riveting device according to claim 5 wherein the second lower blade portion has a press-fit hole into which the second upper blade portion enters, the tab punching mechanism further comprising a bracket and a ejector rod, the bracket being mounted on the second transfer base, one end of the ejector rod being connected to the bracket, the other end of the ejector rod being penetrated into the press-fit hole by a side of the second lower blade portion facing away from the second upper blade portion.

7. The tab riveting device of claim 5 further comprising a drive mechanism comprising a second cam rotatably coupled to the motion base, the tab punching mechanism further comprising a second follower rotatably coupled to the second transfer base, the second cam in rolling engagement with the second follower such that the second cam can reciprocate in the second predetermined direction by the second follower as it rotates.

8. The tab riveting device according to claim 7 wherein the tab punching mechanism further comprises a second pre-tensioning elastic member, one end of the second pre-tensioning elastic member is connected to the second transfer seat, the other end of the second pre-tensioning elastic member is connected to the movement seat, and the second pre-tensioning elastic member is configured to provide a pre-tensioning force that causes the second transfer seat to have a movement tendency that approaches the second cam along the second predetermined direction.

9. The tab riveting device according to claim 1, wherein the riveting mechanism comprises a third transfer seat and an upper riveting portion mounted on the third transfer seat, the third transfer seat being movably connected to the motion seat along a second preset direction; the tab riveting device further comprises a matching platform arranged on the motion seat, wherein the matching platform is provided with a lower riveting part which is oppositely arranged with the upper riveting part in the second preset direction;

The third transferring base can controllably drive the upper riveting part to approach or depart from the lower riveting part along the second preset direction so as to rivet the tab and the pole piece between the upper riveting part and the lower riveting part.

10. The tab riveting device according to claim 9, further comprising a driving mechanism comprising a third cam rotatably connected to the motion base, the riveting mechanism further comprising a third follower rotatably connected to the third transfer base, the third cam being in rolling engagement with the third follower such that the third cam can drive the third transfer base to reciprocate in the second preset direction by the third follower when rotating.

11. The tab riveting device according to claim 10, wherein the riveting mechanism further comprises a third pre-tightening elastic member, one end of the third pre-tightening elastic member is connected to the third transfer seat, the other end of the third pre-tightening elastic member is connected to the moving seat, and the third pre-tightening elastic member is configured to provide a pre-tightening force that makes the third transfer seat have a movement tendency along the second preset direction close to the third cam.

12. The tab riveting device of claim 1, further comprising a fixed base and a fourth follower rotatably coupled to the fixed base, the motion base being movably coupled to the fixed base along the first predetermined direction;

13. The tab staking device of claim 12, wherein said drive mechanism further comprises a first cam, a second cam, a third cam, a rotational shaft and a rotational drive; the rotary shaft is rotatably connected to the motion seat around the axis of the rotary shaft, and the rotary driving piece is connected with the rotary shaft and used for driving the rotary shaft to rotate around the axis of the rotary shaft relative to the motion seat; the first cam, the second cam, the third cam and the fourth cam are all mounted on the rotating shaft to synchronously rotate following the rotating shaft;

14. The tab riveting device of claim 1, wherein the pole piece punching mechanism simultaneously punches a plurality of riveting holes in the pole piece, and wherein the tab punching mechanism simultaneously punches a plurality of flanging holes in the tab; the plurality of riveting holes are in one-to-one correspondence with the plurality of flanging holes, and the flanging forming each flanging hole penetrates through the corresponding riveting hole.