阅读说明：本技术 电池顶盖激光点焊治具 (Battery top cap laser spot welding tool ) 是由 白根群 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种电池顶盖激光点焊治具,其包括治具底板和至少一个压紧组件；其中,治具底板上设有用于放置待焊接电池顶盖的载具台；压紧组件包括旋转汽缸、连接板、压紧汽缸和压紧块,旋转汽缸装设于载具台一侧,其输出端与连接板一端固定连接,压紧汽缸装设于连接板另一端,压紧块装设于压紧汽缸输出端上；本发明通过旋转汽缸驱动连接板带动压紧汽缸转动,压紧汽缸驱动压紧块压紧待焊接电池顶盖,带动压紧块在待焊接电池顶盖上旋转,以供外部电焊头围绕待焊接电池顶盖的焊接口焊接至少一整圈,实现了压紧块在压紧产品时能旋转,避免在焊接过程中产品产生松动或位移,不需要人工进行实时压紧或旋转,保证焊接质量的同时也保证焊接效率。(The invention discloses a laser spot welding jig for a battery top cover, which comprises a jig bottom plate and at least one pressing assembly; the jig base plate is provided with a carrier table for placing a top cover of a battery to be welded; the pressing assembly comprises a rotary cylinder, a connecting plate, a pressing cylinder and a pressing block, the rotary cylinder is arranged on one side of the carrier platform, the output end of the rotary cylinder is fixedly connected with one end of the connecting plate, the pressing cylinder is arranged on the other end of the connecting plate, and the pressing block is arranged on the output end of the pressing cylinder; according to the invention, the rotary cylinder drives the connecting plate to drive the pressing cylinder to rotate, the pressing cylinder drives the pressing block to press the top cover of the battery to be welded, and the pressing block is driven to rotate on the top cover of the battery to be welded so as to enable an external electric welding head to weld at least one whole circle around the welding port of the top cover of the battery to be welded, so that the pressing block can rotate when pressing a product, the product is prevented from loosening or displacing in the welding process, manual real-time pressing or rotating is not needed, and the welding quality is ensured while the welding efficiency is ensured.)

1. The utility model provides a battery top cap laser spot welding tool which characterized in that, it includes:

the jig base plate is provided with a carrier table for placing a top cover of the battery to be welded;

the pressing assembly comprises a rotating cylinder, a connecting plate, a pressing cylinder and a pressing block, the rotating cylinder is arranged on one side of the carrier table, the output end of the rotating cylinder is fixedly connected with one end of the connecting plate, the pressing cylinder is arranged on the other end of the connecting plate, and the pressing block is arranged on the output end of the pressing cylinder; the rotating cylinder is used for driving the connecting plate to drive the pressing cylinder to rotate, the pressing cylinder drives the pressing block to press the top cover of the battery to be welded and drives the pressing block to rotate on the top cover of the battery to be welded so that an external electric welding head can weld at least one whole circle around a welding port of the top cover of the battery to be welded.

2. The tool for laser spot welding of the battery top cover according to claim 1, wherein the compressing block comprises a connecting piece, a compressing portion and a rotating cylinder, one end of the connecting piece is arranged on the output end of the compressing cylinder, the rotating cylinder penetrates through the other end of the connecting piece, the rotating axis of the rotating cylinder is coincident with the rotating axis of the rotating cylinder, and the compressing portion is arranged on one end of the rotating cylinder adjacent to the carrier table; the rotating cylinder drives the connecting plate to rotate, and the pressing cylinder drives the connecting piece to be close to and press the battery top cover to be welded while rotating.

3. The tool for laser spot welding of the battery top cover according to claim 2, wherein the compressing block further comprises a plunger for fixing the compressing portion, and the plunger is mounted on the connecting member and adjacent to the rotating cylinder.

4. The laser spot welding jig for the battery top cover according to claim 2, wherein the deep groove ball bearing for reducing the rotation resistance and the thrust bearing for maintaining the pressing force are sequentially sleeved on the rotating cylinder.

5. The laser spot welding jig for the battery top cover according to claim 1, wherein a supporting column is arranged on the connecting plate, one end of the supporting column is fixedly connected with the connecting plate, the other end of the supporting column is abutted against the jig bottom plate, and the supporting column is located right below the pressing cylinder.

6. The laser spot welding jig for the top cover of the battery as claimed in claim 5, wherein the end of the supporting column adjacent to the bottom plate of the jig is provided with a steel ball roller for reducing friction.

7. The laser spot welding jig for the top cover of the battery as claimed in claim 6, wherein a hexagonal bearing is installed on one end of the supporting column adjacent to the bottom plate of the jig, and the steel ball roller is accommodated in the hexagonal bearing and freely rotates in the hexagonal bearing.

8. The battery top cover laser spot welding jig according to claim 1, wherein the carrier table comprises a carrier base plate and a carrier support, one end of the carrier support is arranged on the jig bottom plate, the carrier base plate is arranged on the other end of the carrier support, and a groove matched with the shape of the battery top cover to be welded is arranged on one surface of the carrier base plate adjacent to the pressing block.

9. The tool of claim 8, wherein a block is disposed between the carrier plate and the carrier bracket.

10. The jig for laser spot welding of battery top caps according to claim 1, wherein one end of the connecting plate is provided with a mounting hole for mounting the pressing cylinder, and the other end of the connecting plate is provided with a connecting hole for connecting the output end of the rotating cylinder.

Technical Field

The invention relates to the technical field of jigs, in particular to a battery top cover laser spot welding jig.

Background

In the production process of the lithium battery, generally, a battery core of the lithium battery is required to be inserted into a tube shell, then a negative electrode tab of the battery core is welded to the bottom of the tube shell to enable the tube shell to become a lithium battery negative electrode, meanwhile, a positive electrode tab of the battery core is required to be welded to a cap, and then the lithium battery is manufactured after the positive electrode tab is folded and sealed by the cap. Wherein, on the process of welding the positive pole utmost point ear of electric core to the block, owing to need carry out location matching to tube and block respectively, then carry out laser welding, the process is comparatively complicated.

At present, a manual welding method is generally adopted, namely, a tube shell and a cap are fixed on the same jig so as to enable the tube shell and the cap to be positioned and matched, then the jig is moved to a clamping table below a laser welding machine for alignment, and after the alignment is completed, the laser welding machine is driven to perform welding action, so that a lug on the tube shell is welded on a positive plate on the cap. Therefore, the existing welding method has the defects of more manual operation procedures, low production efficiency, high labor cost and poor welding effect due to the fact that a product is easy to loosen or displace in the welding process because multiple persons are required to cooperate in the production process.

Disclosure of Invention

The invention aims to provide a laser spot welding jig for a battery top cover, which solves the problems that in the prior art, the number of manual operation procedures is large, multiple persons are required to cooperate in the production process, the production efficiency is low, the labor cost is high, and the welding effect is poor due to the fact that products are easy to loosen or displace in the welding process.

In order to solve the above problems, the present invention provides a battery top cover laser spot welding jig, which comprises:

the jig base plate is provided with a carrier table for placing a top cover of the battery to be welded;

the pressing assembly comprises a rotating cylinder, a connecting plate, a pressing cylinder and a pressing block, the rotating cylinder is arranged on one side of the carrier table, the output end of the rotating cylinder is fixedly connected with one end of the connecting plate, the pressing cylinder is arranged on the other end of the connecting plate, and the pressing block is arranged on the output end of the pressing cylinder; the rotating cylinder is used for driving the connecting plate to drive the pressing cylinder to rotate, the pressing cylinder drives the pressing block to press the top cover of the battery to be welded, and the pressing block is driven to rotate on the top cover of the battery to be welded so that the external electric welding head can weld at least one whole circle around a welding opening of the top cover of the battery to be welded.

As a further improvement of the invention, the compressing block comprises a connecting piece, a compressing part and a rotating cylinder, one end of the connecting piece is arranged on the output end of the compressing cylinder, the rotating cylinder penetrates through the other end of the connecting piece, the rotating axis of the rotating cylinder is superposed with the rotating axis of the rotating cylinder, and the compressing part is arranged on one end of the rotating cylinder, which is adjacent to the carrier table; the rotating cylinder drives the connecting plate to rotate, and the pressing cylinder drives the connecting piece to be close to and press the battery top cover to be welded while rotating.

As a further improvement of the invention, the pressing block further comprises a plunger for fixing the pressing part, and the plunger is arranged on the connecting piece and is adjacent to the rotating cylinder.

As a further improvement of the invention, a deep groove ball bearing for reducing the rotation resistance and a thrust bearing for keeping the pressing force are sequentially sleeved on the rotating cylinder.

As a further improvement of the invention, a support column is arranged on the connecting plate, one end of the support column is fixedly connected with the connecting plate, the other end of the support column is abutted against the jig bottom plate, and the support column is positioned right below the pressing cylinder.

As a further improvement of the invention, one end of the supporting column adjacent to the jig bottom plate is provided with a steel ball roller for reducing friction.

As a further improvement of the invention, a hexagonal bearing is arranged at one end of the supporting column adjacent to the jig bottom plate, and the steel ball roller is accommodated in the hexagonal bearing and freely rotates in the hexagonal bearing.

As a further improvement of the invention, the carrier table comprises a carrier base plate and a carrier support, one end of the carrier support is arranged on the jig base plate, the carrier base plate is arranged on the other end of the carrier support, and a groove matched with the shape of the top cover of the battery to be welded is arranged on one surface of the carrier base plate, which is adjacent to the pressing block.

As a further improvement of the invention, a heightening block is arranged between the carrier cushion plate and the carrier bracket.

As a further improvement of the invention, one end of the connecting plate is provided with a mounting hole for mounting the pressing cylinder, and the other end of the connecting plate is provided with a connecting hole for connecting the output end of the rotating cylinder.

According to the invention, the rotary cylinder drives the connecting plate to drive the pressing cylinder to rotate, the pressing cylinder drives the pressing block to press the top cover of the battery to be welded and drives the pressing block to rotate on the top cover of the battery to be welded so as to enable the external electric welding head to weld at least one whole circle around the welding port of the top cover of the battery to be welded, so that the pressing block can rotate when pressing the product, the product can be fixed at the same position after rotating, the product is prevented from loosening or displacing in the welding process, meanwhile, manual real-time pressing or rotating is not needed, the welding quality is ensured, and meanwhile, the welding efficiency is also ensured.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of a laser spot welding jig for a battery top cover according to the present invention;

FIG. 2 is a schematic structural diagram of a battery top cover of the laser spot welding jig for a battery top cover according to the present invention;

FIG. 3 is a schematic structural view of a second embodiment of a laser spot welding jig for a battery top cover according to the present invention;

FIG. 4 is a schematic structural view of a third embodiment of a laser spot welding jig for a battery top cover according to the present invention;

FIG. 5 is a schematic structural view of a laser spot welding jig block for battery top caps according to the present invention;

FIG. 6 is a schematic structural view of a support pillar of the battery top cover laser spot welding jig of the invention;

FIG. 7 is a schematic structural view of a mounting hole of the laser spot welding jig for the top cover of the battery of the present invention;

FIG. 8 is a schematic structural view of a steel ball roller of the laser spot welding jig for the top cover of the battery of the invention;

FIG. 9 is a schematic structural view of a pressing head of the laser spot welding jig for the top cover of the battery of the invention;

FIG. 10 is a schematic structural view of a plunger of the laser spot welding jig for the top cover of the battery of the present invention;

FIG. 11 is a schematic structural view of a bearing of the battery top cover laser spot welding jig of the present invention;

fig. 12 is a schematic structural view of a carrier table of the battery top cover laser spot welding jig of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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.

Fig. 1, 2, 3 and 4 show an embodiment of a laser spot welding jig for a battery top cover 3 of the present invention, and referring to fig. 1, in the embodiment, the laser spot welding jig for a battery top cover 3 comprises a jig base plate 1 and at least one pressing assembly 2.

Specifically, referring to fig. 2, fig. 2 shows the battery top cover 3 to be positioned by the battery top cover 3 laser spot welding jig of the present embodiment, and two caps 31 to be positioned are disposed at two ends of the battery top cover 3.

Preferably, referring to fig. 3, the present embodiment employs two embodiments of the pressing assembly 2 to simultaneously position the caps 31 at both ends of one battery top cover 3; the two pressing components 2 are divided into a first pressing component 21 and a second pressing component 22, the first pressing component 21 is installed on the left side of the top surface of the jig bottom plate 1 and located on the left side of the jig bottom plate 1, and the second pressing component 22 is installed on the right side of the top surface of the jig bottom plate 1 and located on the right side of the jig bottom plate 1.

Referring to fig. 4, a carrier table 11 for placing the top cover 3 of the battery to be welded is arranged on the jig base plate 1; the first pressing assembly 21 includes a first rotating cylinder 211, a first connecting plate 212, a first pressing cylinder 213 and a first pressing block 214, the first rotating cylinder 211 is installed at the left side of the carrier table 11, the output end of the first rotating cylinder 211 is fixedly connected with one end of the first connecting plate 212, the first pressing cylinder 213 is installed at the other end of the first connecting plate 212, and the first pressing block 214 is installed at the output end of the first pressing cylinder 213; the first rotating cylinder 211 is used for driving the first connecting plate 212 to drive the first pressing cylinder 213 to rotate, the first pressing cylinder 213 drives the first pressing block 214 to press one cap 31 on the left side of the to-be-welded battery top cover 3, and drives the first pressing block 214 to rotate on the to-be-welded battery top cover 3, so that an external electric welding head can weld at least one full circle around a welding port between the to-be-welded battery top cover 3 and the cap 31; the second pressing assembly 22 includes a second rotating cylinder 221, a second connecting plate 222, a second pressing cylinder 223 and a second pressing block 224, the second rotating cylinder 221 is installed on the right side of the carrier table 11, an output end of the second rotating cylinder 221 is fixedly connected with one end of the second connecting plate 222, the second pressing cylinder 223 is installed on the other end of the second connecting plate 222, and the second pressing block 224 is installed on an output end of the second pressing cylinder 223; the second rotating cylinder 221 is configured to drive the second connecting plate 222 to drive the second pressing cylinder 223 to rotate, the second pressing cylinder 223 drives the second pressing block 224 to press one cap 31 on the right side of the to-be-welded battery top cover 3, and drives the second pressing block 224 to rotate on the to-be-welded battery top cover 3, so that an external electric welding head can weld at least one full circle around a welding opening between the to-be-welded battery top cover 3 and the cap 31.

Specifically, referring to fig. 5, the top surface of the carrier table 11 is provided with a block 111, two ends of the block 111 are respectively provided with a "U" shaped slot 112, notches of the two "U" shaped slots 112 are opposite, and the "U" shaped slots 112 are used for accommodating and clamping two long ends of the battery top cover 3 to be welded.

Further, referring to fig. 6, the first connecting plate 212 is provided with a first supporting column 2121, one end of the first supporting column 2121 is fixedly connected to the bottom surface of the first connecting plate 212, the other end of the first supporting column 2121 abuts against the jig base plate 1, and the first supporting column 2121 is located right below the first pressing cylinder 213; the second connecting plate 222 is provided with a second supporting column 2221, one end of the second supporting column 2221 is fixedly connected with the bottom surface of the second connecting plate 222, the other end of the second supporting column 2221 is abutted against the jig base plate 1, and the second supporting column 2221 is located right below the second pressing cylinder 223.

Further, referring to fig. 7, four first mounting holes 2122 for mounting the first pressing cylinder 213 are formed at one end of the first connecting plate 212, and a plurality of first connecting holes 2123 for connecting the output ends of the first rotating cylinder 211 are formed at the other end of the first connecting plate 212; one end of the second connection plate 222 is provided with four second mounting holes 2222 for mounting the second compressing cylinder 223, and the other end of the second connection plate 222 is provided with a plurality of second connection holes 2223 for connecting the output ends of the second rotating cylinders 221.

Further, the center of the cap 31 to be welded to the left side of the battery top cover 3, the rotation center of the first connecting plate 212, and the rotation center of the first pressing block 214 are all located on the same rotation axis; the center of the cap 31 to be welded to the right side of the battery top cover 3, the rotation center of the second connecting plate 222, and the rotation center of the second pressing block 224 are all located on the same rotation axis.

Further, referring to fig. 8, a first steel ball roller 2124 for reducing friction is mounted on one end of the first support column 2121 adjacent to the tool base plate 1, the first steel ball roller 2124 is accommodated in a first hexagonal bearing 2125, the first steel ball roller 2124 can freely rotate in the first hexagonal bearing 2125, and the first hexagonal bearing 2125 is mounted on one end of the first support column 2121 adjacent to the tool base plate 1; a second ball roller 2224 for reducing friction is mounted on one end of the second supporting post 2221 adjacent to the tool base plate 1, the second ball roller 2224 is received in a second hexagonal bearing 2225, the second ball roller 2224 can freely rotate in the second hexagonal bearing 2225, and the second hexagonal bearing 2225 is mounted on one end of the second supporting post 2221 adjacent to the tool base plate 1.

Further, the pressing blocks on the first pressing assembly 21 are opposite to the pressing blocks on the second pressing assembly 22.

Preferably, the number of the supporting columns can be set according to the number of the pressing assemblies, in this embodiment, two first supporting columns 2121 are installed below the connecting plate of the first pressing assembly 21, and two second supporting columns 2221 are installed below the connecting plate of the second pressing assembly 22.

This embodiment drives through rotatory cylinder drive connecting plate and compresses tightly the cylinder rotation, it compresses tightly to compress tightly cylinder drive compact heap and treats welding battery top cap 3, and it is rotatory on treating welding battery top cap 3 to drive the compact heap, for the outside electric welding head to weld at least a whole circle around the welding mouth that treats welding battery top cap 3, thereby realized that the compact heap can be rotatory when compressing tightly the product, make and fix in same position after rotatory, avoided producing at welding in-process product not hard up or displacement, do not need the manual work to compress tightly in real time or rotatory simultaneously, welding efficiency has also been guaranteed when having guaranteed welding quality.

In order to ensure the fixing effect of the pressing block, in the embodiment, referring to fig. 9, on the basis of the above-mentioned embodiment, in the embodiment, the first pressing block 214 includes a first connecting member 2141, a first pressing portion 2142 and a first rotating cylinder 2143, one end of the first connecting member 2141 is installed on the output end of the first pressing cylinder 213, the first rotating cylinder 2143 penetrates through the other end of the first connecting member 2141, the rotation axis of the first rotating cylinder 2143 coincides with the rotation axis of the first rotating cylinder 211, and the first pressing portion 2142 is disposed on one end of the first rotating cylinder 2143 adjacent to the carrier table 11; the first rotating cylinder 211 drives the first connection plate 212 to rotate, and the first pressing cylinder 213 drives the first connection member 2141 to approach the to-be-welded battery top cover 3 while rotating, so that the first pressing portion 2142 presses the cap 31 to the left side of the to-be-welded battery top cover 3; the second pressing block 224 includes a second connecting member 2241, a second pressing portion 2242, and a second rotating cylinder 2243, one end of the second connecting member 2241 is mounted on the output end of the second pressing cylinder 223, the second rotating cylinder 2243 penetrates the other end of the second connecting member 2241, the rotation axis of the second rotating cylinder 2243 coincides with the rotation axis of the second rotating cylinder 221, and the second pressing portion 2242 is disposed on one end of the second rotating cylinder 2243 adjacent to the carrier table 11; the second rotating cylinder 221 drives the second connecting plate 222 to rotate, and the second pressing cylinder 223 drives the second connecting member 2241 to approach the cell top cover 3 to be welded while rotating, so that the second pressing portion 2242 presses the cap 31 on the right side of the cell top cover 3 to be welded.

Referring to fig. 10, further, the first pressing block 214 further includes a first plunger 2144 for fixing the first pressing portion 2142, the first plunger 2144 is mounted on the first connecting member 2141 and adjacent to the first rotating cylinder 2143, the first plunger 2144 penetrates through the first connecting member 2141 and abuts against the first pressing portion 2142, and the first plunger 2144 is configured to drive the first pressing portion 2142 to rotate simultaneously when the first connecting member 2141 rotates; the second pressing block 224 further comprises a second plunger 2244 used for fixing the second pressing part 2242, the second plunger 2244 is installed on the second connecting piece 2241 and adjacent to the second rotating cylinder 2243, the second plunger 2244 runs through the second connecting piece 2241 and abuts against the second pressing part 2242, and the second plunger 2244 is used for driving the second pressing part 2242 to rotate simultaneously when the second connecting piece 2241 rotates.

Further, referring to fig. 11, the first rotating cylinder 2143 is sequentially sleeved with a first deep groove ball bearing 2145 for reducing the rotation resistance and a first thrust bearing 2146 for maintaining the pressing force; and a second deep groove ball bearing 2245 for reducing the rotation resistance and a second thrust bearing 2246 for keeping the pressing force are sequentially sleeved on the second rotating cylinder 2243.

This implementation drives the compact heap through rotatory cylinder and is waiting to weld battery top cap 3 rotatory to give up the space and supply the soldered connection spin welding should wait to weld battery top cap 3, need not change fixed mode in welding process, further guaranteed welding quality.

In order to ensure that the top cover 3 of the battery to be welded does not become loose during the welding process, in the embodiment, referring to fig. 12, on the basis of the above-mentioned embodiment, the carrier table 11 includes a carrier base plate 113 and a carrier bracket 114, one end of the carrier bracket 114 is mounted on the jig base plate 1, and the carrier base plate 113 is mounted on the other end of the carrier bracket 114.

Specifically, the carrier base plate 113 is provided with the elevation block 111 in the above embodiment on the top surface, two ends of the elevation block 111 are respectively provided with a "U" shaped slot 112, the notches of the two "U" shaped slots 112 are opposite, and the "U" shaped slot 112 is used for accommodating and clamping two long ends of the battery top cover 3 to be welded.

The embodiment fixes the groove with the shape matched with that of the battery top cover 3 to be welded on the carrier base plate 113 and stabilizes the carrier base plate 113 through the carrier bracket 114, so that the battery top cover 3 to be welded cannot generate the problems of looseness, displacement and the like in the welding process, and the welding quality is further ensured.

The embodiments of the present invention have been described in detail, but the present invention is only exemplary and is not limited to the embodiments described above. It will be apparent to those skilled in the art that any equivalent modifications or substitutions can be made within the scope of the present invention, and thus, equivalent changes and modifications, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.