CN109967948B

CN109967948B - Battery welding fixture

Info

Publication number: CN109967948B
Application number: CN201910259188.4A
Authority: CN
Inventors: 马庆元; 李志强; 韦雅凤; 郭金伟; 董建伟; 高云松; 徐作斌; 高云峰
Original assignee: Han s Laser Technology Industry Group Co Ltd
Current assignee: Shenzhen Han's Lithium Battery Intelligent Equipment Co ltd
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2021-05-04
Anticipated expiration: 2039-04-02
Also published as: CN109967948A

Abstract

The invention provides a battery welding clamping mechanism which comprises a bottom plate and a positioning assembly arranged on the bottom plate, wherein the positioning assembly comprises an installation part, a positioning part used for positioning a battery and a thrust part arranged on the side part of the positioning part; thrust portion including connect in the briquetting of installation department to and the elastic component, the support is installed to the stiff end of elastic component, the expansion end of elastic component is connected the briquetting, the briquetting is in under the elastic force of elastic component press from both sides the battery tightly in location portion. The pressing block is pushed by the compression amount of the elastic piece, so that the contact force between the pressing block and the battery is controlled, the battery product, particularly a thin-wall product, is prevented from deforming, meanwhile, the product is tightly attached to the positioning part, the repeated positioning precision of the product is improved, and the problem of welding deviation is avoided.

Description

Battery welding fixture

Technical Field

The invention belongs to the field of positioning fixtures, and particularly relates to a battery side welding positioning and clamping mechanism.

Background

At the present stage, the market of consumer electronic products steadily increases, and particularly, with the rise of the intelligent watch industry, the demand of medium and micro thin-wall steel shell batteries is more and more. The steel shell of the battery is thin and is generally below 0.1mm, and in the battery assembly production process, the welding requirement is too high because the battery shell is thin, and the conventional positioning welding clamp is often improper in pressing force, so that the excessive pressure deformation or insufficient pressure positioning deviation in the product production process is caused, and various defects such as partial welding, welding penetration, insufficient welding and the like are generated.

Disclosure of Invention

The invention aims to provide a battery welding and clamping mechanism to solve the technical problem of positioning deviation caused by over-pressure deformation or insufficient pressure in the production process of a product in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: provided is a battery welding clamping mechanism, comprising:

the battery welding clamping mechanism comprises a bottom plate and a positioning assembly arranged on the bottom plate, wherein the positioning assembly comprises an installation part, a positioning part used for positioning a battery and a thrust part arranged on the side part of the positioning part; thrust portion including connect in the briquetting of installation department to and the elastic component, the support is installed to the stiff end of elastic component, the expansion end of elastic component is connected the briquetting, the briquetting is in under the elastic force of elastic component press from both sides the battery tightly in location portion.

As a further optimization of the invention, the pressing block is slidably connected to the mounting portion, the support is provided with a guide rod, and the guide rod is sleeved on the elastic member.

As a further optimization of the invention, the battery positioning device further comprises an unlocking assembly arranged at the bottom of the positioning assembly, wherein the unlocking assembly comprises a power piece for providing power, a base arranged at the output end of the power piece, a follower arranged on the base, and an unlocking piece abutted against the follower, wherein the unlocking piece is abutted against the pressing block, the power piece drives the follower on the base to move, and the follower drives the pressing block to be far away from or close to the battery through the unlocking piece.

As a further optimization of the present invention, a first buffer is disposed between the output end of the power member and the base.

As a further optimization of the invention, the two pressing blocks are correspondingly arranged at the long side and the short side of the battery, and the two unlocking pieces and the two followers are respectively arranged corresponding to the two pressing blocks.

As a further optimization of the invention, the device also comprises a pressing component; the pressing component comprises an installation bottom plate, a moving part and a pressing part; the moving part comprises a first linear rail and a second linear rail, wherein the first linear rail is installed on the installation bottom plate, the first linear rail extends along the front-back direction of the installation bottom plate, and the second linear rail extends up and down along the direction perpendicular to the installation bottom plate.

As a further optimization of the present invention, the pressing assembly further includes a mounting base mounted on the mounting base plate, a first sliding member disposed on the mounting base corresponding to the first track, and a second sliding member disposed corresponding to the second track, the first sliding member is connected to a first driving member for driving the first sliding member to reciprocate along the first track, and the second sliding member is connected to a second driving member for driving the second sliding member to reciprocate along the second track.

As a further optimization of the present invention, a limiting member for blocking a moving position of the mounting base is disposed at a front end of the mounting base, and a second buffer is disposed on the limiting member.

As a further optimization of the invention, the pressing block is fixedly connected with a pressing block fixing plate, the bottom of the pressing block fixing plate extends to the bottom of the bottom plate and is connected with an air blowing protection assembly, the air blowing protection assembly comprises a third linear rail, an air inlet joint arranged on one side of the bottom plate and an air exhaust joint arranged on the other side of the bottom plate, a protective air channel is communicated between the air inlet joint and the positioning part, and a protective air outlet is arranged on the positioning part; and a vacuum channel is communicated between the air exhaust joint and the bottom of the battery.

Compared with the prior art, the battery welding and clamping mechanism has the following advantages:

(1) according to the battery welding clamping mechanism, the pressing block is pushed by the compression amount of the elastic piece, so that the contact force between the pressing block and the battery is controlled, the battery product, particularly a thin-wall product, is prevented from deforming, the product is tightly attached to the positioning part, the repeated positioning precision of the product is improved, and the problem of welding deviation is avoided.

(2) According to the battery welding clamping mechanism, the pressing assembly is arranged, and the pressing assembly moves to the position above the battery of the positioning assembly through the driving of the first driving piece and the second driving piece and forms gantry type pressing, so that the condition that a steel shell is not well attached to a sealing cover is improved, and the welding through and insufficient welding risks are reduced;

(3) according to the battery welding and clamping mechanism, the blowing protection assembly is arranged, the interior of the battery is connected with the vacuum source through the battery liquid injection hole in the welding process, and bulges of the battery caused by thermal deformation in the welding process are eliminated by adjusting the vacuum value; meanwhile, in the welding process, the protective gas in the clamping mechanism flows circularly to discharge the air in the clamp cavity and take away the welding accumulated heat, so that the welding deformation is improved, the surface blowing effect is improved, and the surface oxidation of the welding back surface of the product is reduced;

(4) according to the battery welding clamping mechanism, the self-locking assembly is arranged, the power piece is used for jacking and unlocking the pressing block in the X/Y axis direction, and the pressing block positions a product under the action of the elastic piece in the inward contraction process of the power piece; meanwhile, the power part is separated from the unlocking part, so that the clamping mechanism is conveniently installed on a motion mechanism such as a turntable and a linear motion platform, a plurality of sets of pressing blocks can be unlocked by one set of power part, and the cost is saved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic view of an open state of a battery welding fixture according to the present invention;

FIG. 2 shows the battery welding fixture of FIG. 1 in a closed position;

FIG. 3 is a schematic structural view of the positioning assembly shown in FIG. 1;

FIG. 4 is a schematic view of the unlocking assembly of FIG. 3 in connection with the positioning assembly;

FIG. 5 is a schematic view of the hold-down assembly shown in FIG. 1;

FIG. 6 is a schematic view of the hold-down assembly shown in FIG. 1 from another perspective;

FIG. 7 is a schematic view of the insufflation protection assembly of FIG. 1;

wherein, in the figures, the respective reference numerals:

1-a bottom plate; 2-a positioning assembly; 21-a mounting portion; 22-a positioning section; 23-a thrust section; 231-briquetting; 232-an elastic member; 233-support; 234-a guide bar; 235-a briquetting fixing plate; 24-a suction connection; 241-vacuum channel; 3-an unlocking assembly; 31-a power member; 32-a base; 33-a follower; 34-unlocking member; 4-pressing the assembly; 41-mounting a bottom plate; 411-a limiter; 412-a second buffer; 42-a moving part; 421-a first wire track; 422-a second wire track; 43-a press-down part; 431-a hold down; 44-a mounting seat; 441-a first slide; 442-a second slide; 443-a first drive member; 444-a second driver; 5-a blowing protection component; 51-an air inlet connector; 52-shielding gas channel; 53-shielding gas circulation channel; 54-shielding gas outlet channel; 55-a third wire track; 6-battery.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below 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.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

As shown in fig. 1-3, the present invention provides a battery welding clamping mechanism, which includes a bottom plate 1, and a positioning assembly 2 mounted on the bottom plate 1, where the positioning assembly 2 includes a mounting portion 21, a positioning portion 22 for positioning a battery 6, and a thrust portion 23 disposed at a side of the positioning portion 22; the thrust portion 23 includes a pressing block 231 connected to the mounting portion 21, and an elastic member 232, preferably, the pressing block 231 is slidably connected to the mounting portion 21, a support 233 is installed at a fixed end of the elastic member 232, a movable end of the elastic member 232 is connected to the pressing block 231, and the pressing block 231 clamps the battery 6 to the positioning portion 231 under the elastic force of the elastic member 232.

In this embodiment, the elastic member 232 is preferably a spring. The pressing block 231 is pushed by the compression amount of the elastic piece 232, so that the contact force between the pressing block 231 and the battery 6 is controlled, the battery 6 product, particularly a thin-wall product, is prevented from deforming, the product is tightly attached to the positioning part, the repeated positioning precision of the product is improved, and the problem of welding deviation is avoided.

As shown in fig. 3, a guide rod 234 is mounted on the support 233, and the guide rod 234 is sleeved on the elastic member 232.

As shown in fig. 4, the battery welding clamping mechanism of the present invention further includes an unlocking assembly 3 disposed at the bottom of the positioning assembly 2, wherein the unlocking assembly 3 includes a power member 31 for providing power, a base 32 disposed at an output end of the power member 31, a follower 33 disposed on the base 32, and an unlocking member 34 abutting against the follower 33, wherein another end of the unlocking member 34 abuts against the pressing block 231, the power member 31 drives the follower 33 on the base 32 to move, and the follower 33 drives the pressing block 231 to move away from or close to the battery 6 through the unlocking member 34. A first buffer is arranged between the output end of the power member 31 and the base 32. In the above, the power member 31 is preferably a pneumatic cylinder, the follower 33 is preferably a cam follower, and the unlocking member 34 is preferably a wedge-shaped block. Through setting up the subassembly of unblanking, power piece 31 pushes up and provides power and drive follower 33 for base 32 and rise, extrudes unlocking piece 34 and makes its back move to drive briquetting 231 and retreat, open locating component, thereby go on and go up unloading action.

Further, the two pressing blocks 231 are correspondingly arranged on the long side and the short side of the battery 6, and the two unlocking pieces 34 and the two followers 33 are arranged corresponding to the two pressing blocks 231. Meanwhile, since the unlocking member 34 and the follower 33 are both disposed on the base 32, the two pressing pieces 231 can move synchronously. The pressing block in the X/Y axis direction can be unlocked by using one power piece to push up, and the pressing block positions a product under the action of the elastic piece in the inward contraction process of the power piece; meanwhile, the power part is separated from the unlocking part, so that the clamping mechanism is conveniently installed on a motion mechanism such as a turntable and a linear motion platform, a plurality of sets of pressing blocks can be unlocked by one set of power part, and the cost is saved.

As shown in fig. 5 and 6, the battery welding fixture of the present invention further includes a pressing assembly 4; the pressing assembly 4 comprises a mounting base plate 41, a moving part 42 and a pressing part 43; the moving portion 42 includes a first wire rail 421 mounted on the mounting base plate 41, and a second wire rail 422 perpendicular to the first wire rail 421, wherein the first wire rail 421 extends along the front-back direction of the mounting base plate 41, and the second wire rail 422 extends along the direction perpendicular to the mounting base plate 41. The push-down assembly 4 further includes a mounting base 44 mounted on the mounting base plate 41, a first sliding member 441 disposed on the mounting base 44 corresponding to the first track 421, a second sliding member 442 disposed corresponding to the second track 422, a first driving member 443 connected to the first sliding member 441 for driving the first sliding member 441 to reciprocate along the first track 421, and a second driving member 444 connected to the second sliding member 442 for driving the second sliding member 442 to reciprocate along the second track 422. The lower pressing part 43 on the lower pressing component 4 is provided with a lower pressing part 431, and the lower pressing part 431 and the positioning part 22 of the positioning component 2 form a gantry type pressing sealing cavity, so that the condition that the steel shell and the sealing cover are not well attached is improved, and the risk of welding through and false welding is reduced.

As shown in fig. 5, a limiting member 411 for blocking a moving position of the mounting base 44 is disposed at a front end of the mounting base plate 41, and a second buffer 412 is disposed on the limiting member 411.

As shown in fig. 7, the pressing block 231 is fixedly connected with a pressing block fixing plate 235, the bottom of the pressing block fixing plate 235 extends to the bottom of the bottom plate 1 and is connected with an air blowing protection assembly 5, the air blowing protection assembly 5 includes a third linear rail 55, an air inlet joint 51 mounted on one side of the bottom plate 1 and an air exhaust joint 24 mounted on the other side of the bottom plate 1, a shielding air channel 52 is communicated between the air inlet joint 51 and the positioning portion 22, a shielding air outlet is arranged on the positioning portion 22, and a shielding air outlet channel 54 and a shielding air circulation channel 53 are formed on the positioning assembly; a vacuum channel 241 is communicated between the air extraction joint 24 and the bottom of the battery 6. By arranging the blowing protection component 5, the interior of the battery is connected with a vacuum source through a battery liquid injection hole in the welding process, and bulges caused by thermal deformation of the battery in the welding process are eliminated by adjusting the vacuum value; meanwhile, in the welding process, the protective gas in the clamping mechanism flows circularly to discharge the air in the clamp cavity, and takes away welding accumulated heat, so that the welding deformation is improved, the surface blowing effect is improved, and the surface oxidation of the welding back of the product is reduced.

To further illustrate the present invention, the following description is made in terms of its specific operating modes:

the power part pushes up to provide power for the base to drive the cam follower to ascend, the unlocking part is extruded to move backwards, the pressing block is driven to move backwards, the positioning part is opened, and the loading and unloading actions are carried out. After the feeding and discharging actions are completed, the power part descends to separate from the base, the elastic part provides power, the cam follower descends to separate from the locking part, and the pressing block moves forwards under the action of the elastic part to complete battery positioning.

After the battery location is accomplished, first driving piece provides power, pushes down the subassembly through first line rail direction, and is got back to positioning fixture directly over through second buffer buffering and locating part are spacing, and the second driving piece is withdrawed, provides power, and the briquetting fixed plate, the briquetting pushes down through second line rail direction, makes cap and casing laminating.

After the shell cover is attached to the shell, the protective gas enters the clamp cavity through the protective gas inlet joint and the protective gas inlet, passes through the protective gas circulation channel and flows out of the protective gas outlet. And meanwhile, the vacuum source is opened, the interior of the battery is pumped through the vacuum channel and the sealing ring, and when the pumped air reaches a set negative pressure value, welding is started.

After the welding is finished, the second driving piece extends out to drive the pressing block to ascend and separate from the clamp positioning mechanism, the first driving piece extends out, the pressing assembly returns to the initial position through the guide of the first linear rail, and the whole process is finished.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. Battery welding fixture, its characterized in that: the positioning assembly comprises an installation part, a positioning part for positioning a battery and a thrust part arranged on the side part of the positioning part; the thrust part comprises a pressing block connected with the mounting part and an elastic piece, a support is mounted at the fixed end of the elastic piece, the movable end of the elastic piece is connected with the pressing block, and the pressing block clamps the battery to the positioning part under the elastic force of the elastic piece;

the pressing block is fixedly connected with a pressing block fixing plate, the bottom of the pressing block fixing plate extends out of the bottom plate, and the pressing block fixing plate is connected with a blowing protection assembly; the blowing protection assembly comprises a third linear rail, an air inlet joint arranged on one side of the bottom plate and an air exhaust joint arranged on the other side of the bottom plate; a protective gas channel is communicated between the gas inlet joint and the positioning part, and a protective gas outlet is formed in the positioning part; a vacuum channel is communicated between the air suction connector and the bottom of the battery, the interior of the battery is connected with a vacuum source through a battery liquid injection hole in the welding process, and bulges of the battery caused by thermal deformation in the welding process are eliminated by adjusting the vacuum value.

2. The battery welding fixture of claim 1, wherein: the briquetting sliding connection in on the installation department, install the guide bar on the support, the guide bar cover is located on the elastic component.

3. The battery welding fixture of claim 1, wherein: the unlocking assembly is arranged at the bottom of the positioning assembly; the unlocking assembly comprises a power piece for providing power, a base arranged at the output end of the power piece, a follower arranged on the base and an unlocking piece abutted against the follower; the unlocking piece is abutted to the pressing block, the power piece drives the follower on the base to move, and the follower drives the pressing block to be far away from or close to the battery through the unlocking piece.

4. The battery welding fixture of claim 3, wherein: a first buffer is arranged between the output end of the power part and the base.

5. The battery welding fixture of claim 3 or 4, wherein: the briquetting is two, corresponds to set up in the long limit of battery and minor face department, the latch release spare with the follower all corresponds the briquetting is provided with two.

6. The battery welding fixture of claim 1, wherein: the pressing component is also included; the pressing component comprises an installation bottom plate, a moving part and a pressing part; the moving part comprises a first linear rail and a second linear rail, wherein the first linear rail is installed on the installation bottom plate, the first linear rail extends along the front-back direction of the installation bottom plate, and the second linear rail extends up and down along the direction perpendicular to the installation bottom plate.

7. The battery welding fixture of claim 6, wherein: the lower pressing assembly further comprises a mounting seat mounted on the mounting base plate, a first sliding piece is arranged on the mounting seat corresponding to the first linear rail, a second sliding piece is arranged on the mounting seat corresponding to the second linear rail, the first sliding piece is connected with a first driving piece used for driving the first sliding piece to move in a reciprocating mode along the first linear rail, and the second sliding piece is connected with a second driving piece used for driving the second sliding piece to move in a reciprocating mode along the second linear rail.

8. The battery welding fixture of claim 7, wherein: the front end of the mounting base plate is provided with a limiting part for blocking the moving position of the mounting base, and the limiting part is provided with a second buffer.