CN214265019U

CN214265019U - Polishing mechanism and testing device

Info

Publication number: CN214265019U
Application number: CN202022806308.9U
Authority: CN
Inventors: 时亚广; 方荣主; 代强; 王鹏; 刘金成
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-09-24
Anticipated expiration: 2030-11-26

Abstract

The utility model belongs to the technical field of lithium cell manufacturing, a grinding machanism and testing arrangement is disclosed. The polishing mechanism comprises a bracket and a polishing component, wherein the polishing component is positioned below the bracket; the guide assembly is sleeved on the support and can slide along the vertical direction relative to the support; the clamp is used for clamping the piece to be detected, a polishing boundary line is arranged at the bottom of the piece to be detected along the direction tangent to the welding mark, the clamp is configured to be sleeved on the guide assembly and can slide along the horizontal direction relative to the guide assembly, and the polishing assembly can abut against the piece to be detected and polish the edge of the piece to be detected to the polishing boundary line. The polishing mechanism ensures the smoothness of the cross section of the to-be-detected piece at the polishing boundary. Through mutually supporting of support, direction subassembly and anchor clamps, avoid operating personnel's both hands direct contact to detect the detection piece, factor of safety is higher, and simple structure, convenient operation, the efficiency of polishing is higher.

Description

Polishing mechanism and testing device

Technical Field

The utility model relates to a lithium cell manufacturing technology field especially relates to a grinding machanism and testing arrangement.

Background

When the lithium battery is manufactured, the lug and the shell need to be welded to form a complete battery core structure, the welding quality between the lug and the shell is an important link for ensuring the quality of the lithium battery and is an important factor influencing the internal resistance and the rate discharge performance of the lithium battery, wherein the main factor influencing the welding quality between the lug and the shell is the welding nugget size and the fusion depth.

Because the welding position of utmost point ear and shell is the central point of the shell bottom of shell and puts, current in order to detect utmost point ear and shell welding quality, need disassemble the electric core that the welding was accomplished earlier, remains the shell bottom part of shell, then operating personnel manually polishes the shell to put the crosscut with the shell at central point, thereby accomplish the detection of welding nugget size and penetration. Adopt artifical manual mode of polishing, receive operating personnel subjective factor's influence easily, lead to the cross section unevenness of shell, influence the measurement of welding effect, and directly handheld shell, the finger is injured easily, and the security performance is lower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a grinding machanism and testing arrangement guarantees the effect of polishing to improve measurement accuracy and security.

To achieve the purpose, the utility model adopts the following technical proposal:

a grinding mechanism comprising:

the polishing assembly is positioned below the bracket;

the guide assembly is sleeved on the bracket and can slide along the vertical direction relative to the bracket;

the clamp is configured to be sleeved on the guide assembly and can slide in the horizontal direction relative to the guide assembly, so that the polishing assembly can abut against the piece to be detected and polish the edge of the piece to be detected to the polishing boundary.

Preferably, the bracket is of a U-shaped configuration, the opening of the bracket being disposed towards the sanding assembly.

Preferably, the guide assembly comprises a guide rod and a guide sleeve, the guide sleeve is arranged on the outer side of the guide rod, the guide sleeve is sleeved on the support and is in sliding fit with the support, and the clamp is sleeved on the guide rod and is in sliding fit with the guide rod.

Preferably, the clamp comprises a body and a pressing block, the pressing block is detachably connected to the body, and two sides of the piece to be detected can abut against the body and the pressing block respectively.

Preferably, the fixture further comprises a locking piece, wherein a first connecting hole is formed in the body, a second connecting hole is formed in the pressing block corresponding to the first connecting hole, and the locking piece is arranged in the first connecting hole and the second connecting hole in a penetrating mode respectively.

Preferably, a holding groove is arranged on one side of the body close to the pressing block, and the holding groove is used for holding the pressing block.

Preferably, the device further comprises a base, and the bracket is arranged on the base.

Preferably, the base is provided with a through hole through which the grinding assembly partially passes.

Preferably, the grinding assembly comprises a grinding driving source and a grinding rotary table, and the grinding driving source can drive the grinding rotary table to rotate.

In order to achieve the above object, the utility model also provides a testing device, including accredited testing organization and foretell grinding machanism, grinding machanism is used for polishing wait to detect the piece, accretion and penetration are welded in the finished product work piece that accredited testing organization is used for detecting and accomplishes polishing.

The utility model has the advantages that:

the utility model provides a grinding machanism utilizes anchor clamps to treat the detection piece centre gripping, treats fixed effectual of detection piece. The guide assembly can drive the anchor clamps and slide along vertical direction, makes and waits to detect a direction removal that moves to being close to or keeping away from the subassembly of polishing, through the sliding fit between guide assembly and the support, and the support has played the guide effect to the guide assembly, guarantees to detect the stationarity that detects the piece and move down the in-process polishing to the edge that will detect the piece is polished to the line of demarcation department of polishing. Meanwhile, the clamp can drive the to-be-detected piece to slide along the horizontal direction relative to the guide assembly so as to complete the rubbing and flattening process of the to-be-detected piece on the cross section of the grinding boundary, and therefore the flatness of the cross section of the to-be-detected piece at the grinding boundary is guaranteed. Through mutually supporting of support, direction subassembly and anchor clamps, avoid operating personnel's both hands direct contact to detect the detection piece, factor of safety is higher, and simple structure, convenient operation, the efficiency of polishing is higher.

The utility model provides a testing arrangement utilizes grinding mechanism will wait to detect a piece and polish for the welding seal of waiting to detect a piece can expose, and the testing mechanism of being convenient for welds the detection of nugget size and penetration isoparametric, has solved that lithium cell welding quality analysis is not comprehensive, and the problem that the welding result is difficult to guarantee makes the nugget measuring result have directly perceived, accurate advantage.

Drawings

Fig. 1 is a schematic structural diagram of the polishing mechanism of the present invention.

In the figure:

1. a support; 2. polishing the assembly; 3. a guide assembly; 4. a clamp; 5. a base;

21. polishing the turntable; 22. polishing a driving source;

31. a guide bar; 32. a guide sleeve;

41. a body; 411. accommodating grooves; 42. briquetting; 43. a locking member;

51. and a through hole.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In order to detect the welding quality of the tab and the shell, the welded battery core needs to be disassembled, a bottom shell part of the shell is reserved, a welding mark is arranged on the end face of the part, and the part to be detected specifically refers to the bottom shell of the part of the shell. Because the seal is generally not set up in the outer fringe of waiting to detect the piece just, the seal probably sets up in the middle part region of waiting to detect the piece, in order to detect each item performance parameter of seal, this embodiment provides a testing arrangement, and this testing arrangement includes accredited testing organization and grinding machanism, and grinding machanism is used for polishing and waits to detect the piece, waits to detect and forms the finished product work piece after the piece is polished through grinding machanism, and accretion and weld the depth of fusion in the finished product work piece that the accredited testing organization is used for detecting and accomplishes polishing.

The testing arrangement that this embodiment provided utilizes grinding machanism will wait to detect a piece and polish for the welding seal of waiting to detect a piece can expose, and the testing mechanism of being convenient for welds the detection of nugget size and weld depth isoparametric, has solved that lithium cell welding quality analysis is not comprehensive, and the problem that the welding result is difficult to guarantee makes the nugget measuring result have directly perceived, accurate advantage.

Optionally, after polishing the finished workpiece, soaking the finished workpiece in a prepared special solution with a certain concentration, wherein the special solution is a 3% -5% nitric acid ethanol solution and is used for corroding the polished cross section. After the finished workpiece is soaked for a certain time (for example, 3 s-6 s), the testing mechanism is specifically a three-dimensional microscope, and the size of the nugget and the fusion depth size are measured by using the three-dimensional microscope.

Because the prior art adopts manual polishing, the polishing quality is easy to be unstable, and in order to solve the problem, the embodiment further provides a polishing mechanism for polishing the to-be-detected piece, wherein the to-be-detected piece is of a cylindrical cover body structure, a polishing boundary line is arranged at the bottom of the to-be-detected piece along the direction tangent to the welding seal, specifically, if the welding seal is approximately arranged at the central position of the to-be-detected piece, and the center of the to-be-detected piece is transversely cut along the axial direction, the polishing boundary line is one diameter of the to-be-detected piece.

As shown in fig. 1, the polishing mechanism comprises a support 1, a polishing assembly 2, a guiding assembly 3 and a clamp 4, wherein the support 1 plays a supporting role, the polishing assembly 2 is arranged below the support 1, the polishing assembly 2 is used for polishing a to-be-detected part, the guiding assembly 3 is arranged on the support 1, and the guiding assembly 3 is configured to be sleeved on the support 1 and can slide along a vertical direction relative to the support 1. The clamp 4 is used for clamping the piece to be detected, and the clamp 4 is configured to be sleeved on the guide component 3 and can slide along the horizontal direction relative to the guide component 3, so that the polishing component 2 can abut against the piece to be detected and polish the edge of the piece to be detected to the polishing boundary.

The grinding machanism that this embodiment provided utilizes anchor clamps 4 to treat the test piece centre gripping, treats that the fixed effectual of test piece. Guide assembly 3 can drive anchor clamps 4 and slide along vertical direction, makes to detect a direction removal that detects to being close to or keeping away from grinding assembly 2, through the sliding fit between guide assembly 3 and the support 1, support 1 has played the guide effect to guide assembly 3, guarantees to detect a stationarity that detects the piece and move down the in-process polishing to the edge that will detect the piece is polished to the line of demarcation department of polishing. Meanwhile, the clamp 4 can drive the to-be-detected piece to slide along the horizontal direction relative to the guide assembly 3 so as to complete the rubbing and flattening process of the to-be-detected piece on the cross section of the grinding boundary, and therefore the flatness of the cross section of the to-be-detected piece on the grinding boundary is guaranteed. Through mutually supporting of support 1, guide assembly 3 and anchor clamps 4, avoid operating personnel's both hands direct contact to detect the detection piece, factor of safety is higher, and simple structure, convenient operation, the efficiency of polishing is higher.

Further, the grinding mechanism also comprises a base 5, and the shape of the base 5 is similar to a cuboid structure. The height direction of the base 5 is the vertical direction, and the length direction of the base 5 is the horizontal direction.

Wherein, seted up through-hole 51 on base 5, through-hole 51 has been passed to grinding subassembly 2 part, and through-hole 51 has played the effect of dodging grinding subassembly 2 for grinding subassembly 2 can be exposed outside the top surface of base 5, is convenient for grinding subassembly 2 and wait to detect a contact and polish. In addition, the bracket 1 is arranged on the base 5, and the base 5 plays a role of integral support. Specifically, be provided with the mount pad on base 5, the mount pad is cylindrical structure, and the mount pad is used for installing support 1, has played the effect fixed to support 1.

Specifically, the bracket 1 is of a U-shaped structure, and the opening of the bracket 1 is arranged towards the grinding assembly 2. Support 1 adopts the longmen structure, and support 1 includes horizontal part and vertical portion, and the both ends of horizontal part are provided with two vertical portions respectively perpendicularly, and the horizontal part has played two vertical portion intermediate junction's effect, and two vertical portions of support 1 can bear and lead to the both ends of guide assembly 3 to guarantee the stationarity that guide assembly 3 removed along vertical direction.

Further, the guide assembly 3 includes a guide rod 31 and two guide sleeves 32, the guide sleeves 32 are disposed on the outer side of the guide rod 31, and the two guide sleeves 32 are symmetrically disposed at two ends of the guide rod 31. The guide sleeve 32 is sleeved on the support 1 and is in sliding fit with the support 1, and under the guide effect of the guide sleeve 32 and the support 1, the smoothness and the stationarity of the guide rod 31 and the piece to be detected moving along the vertical direction are ensured. The clamp 4 is sleeved on the guide rod 31 and is in sliding fit with the guide rod, and under the guiding action of the clamp 4 and the guide rod 31, the smoothness and the stability of the movement of the guide rod 31 and the clamp 4 along the horizontal direction are ensured.

Further, as shown in fig. 1, the fixture 4 includes a body 41 and a pressing block 42, a receiving groove 411 is provided on one side of the body 41 close to the pressing block 42, the receiving groove 411 is of a rectangular structure, the receiving groove 411 is used for receiving the pressing block 42, and the receiving groove 411 plays a role in receiving and avoiding the pressing block 42. Under the cooperation of the body 41 and the pressing block 42, two sides of the piece to be detected can be respectively abutted to the body 41 and the pressing block 42, so that the effect of compressing the piece to be detected is achieved, and the fixing effect of the piece to be detected is good.

Briquetting 42 can be dismantled and be connected in body 41, is convenient for wait to detect the installation and the dismantlement of a piece, provides convenience for waiting to detect the material loading and the unloading of a piece, reduces the maintenance cost. Specifically, anchor clamps 4 still include retaining member 43, are provided with first connecting hole on body 41, correspond first connecting hole on briquetting 42 and are provided with the second connecting hole, and retaining member 43 specifically is the bolt, and first connecting hole and second connecting hole are worn to locate respectively by retaining member 43, and preferred one of them is the unthreaded hole structure in first connecting hole and the second connecting hole, and another adopts screw hole structure, adopts bolted connection's mode, and is simple and convenient, and manufacturing cost is lower.

Further, the grinding assembly 2 comprises a grinding driving source 22 and a grinding rotary table 21, the grinding driving source 22 is specifically a grinding motor, the grinding driving source 22 can drive the grinding rotary table 21 to rotate, and after the workpiece to be detected is contacted with the grinding rotary table 21, the grinding rotary table 21 finishes the grinding process of the workpiece to be detected along with the rotation of the grinding rotary table 21.

The working process of the grinding mechanism provided by the embodiment is as follows:

disassembling the welded battery core, reserving the shell bottom part of the shell, namely reserving the part of the piece to be detected, and arranging a polishing boundary line at the bottom of the piece to be detected along the direction tangent to the welding print;

fixing the disassembled piece to be detected between the body 41 and the pressing block 42 of the clamp 4 along the grinding boundary line by screwing the locking piece 43;

starting grinding assembly 2, grinding drive source 22 can drive grinding turntable 21 and rotate, carries out vertical removal along support 1 with guide assembly 3's guide sleeve 32, makes to wait to detect a piece and grinding turntable 21 contact, and handheld anchor clamps 4 carry out horizontal migration along guide bar 31, makes grinding turntable 21 polish and waits to detect a piece, stops polishing until polishing to the boundary line of waiting to detect a piece.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A grinding mechanism, comprising:

the grinding device comprises a support (1) and a grinding assembly (2), wherein the grinding assembly (2) is positioned below the support (1);

the guide assembly (3) is sleeved on the bracket (1) and can slide along the vertical direction relative to the bracket (1);

the clamp (4) is used for clamping a piece to be detected, a polishing dividing line is arranged at the bottom of the piece to be detected along the direction tangent to the welding mark, the clamp (4) is configured to be sleeved on the guide component (3) and can slide along the horizontal direction relative to the guide component (3), so that the polishing component (2) can abut against the piece to be detected and polish the edge of the piece to be detected to the polishing dividing line.

2. The sharpening mechanism as defined in claim 1, characterized in that the bracket (1) is of a U-shaped configuration, the opening of the bracket (1) being arranged towards the sharpening assembly (2).

3. The sharpening mechanism as claimed in claim 1, characterized in that the guide assembly (3) comprises a guide rod (31) and a guide sleeve (32), the guide sleeve (32) being arranged outside the guide rod (31), the guide sleeve (32) being fitted over the support (1) and in sliding engagement therewith, the clamp (4) being fitted over the guide rod (31) and in sliding engagement therewith.

4. The sharpening mechanism according to claim 3, characterized in that said clamp (4) comprises a body (41), a pressing block (42), said pressing block (42) being removably connected to said body (41), the two sides of said piece to be detected being able to abut against said body (41) and said pressing block (42), respectively.

5. The sharpening mechanism according to claim 4, characterized in that said clamp (4) further comprises a locking member (43), on said body (41) there being provided a first connection hole, on said pressing block (42) there being provided a second connection hole corresponding to said first connection hole, said locking member (43) being respectively pierced in said first connection hole and said second connection hole.

6. Sharpening mechanism as claimed in claim 4, characterized in that a receiving slot (411) is provided on the side of the body (41) close to the pressure piece (42), said receiving slot (411) being intended to receive the pressure piece (42).

7. The sharpening mechanism as defined in any one of claims 1-6, further comprising a base (5), said stand (1) being provided on said base (5).

8. Sharpening mechanism as claimed in claim 7, characterized in that a through hole (51) is made in said base (5), said sharpening assembly (2) passing partially through said through hole (51).

9. The sharpening mechanism as defined in any one of claims 1-6, characterized in that the sharpening assembly (2) comprises a sharpening drive source (22) and a sharpening turntable (21), the sharpening drive source (22) being capable of driving the sharpening turntable (21) in rotation.

10. A testing device, characterized by comprising a testing mechanism and the polishing mechanism of any one of claims 1-9, wherein the polishing mechanism is used for polishing the workpiece to be tested, and the testing mechanism is used for detecting weld nuggets and weld penetration in finished workpieces after polishing.