CN221735221U - Pole welding tooling - Google Patents

Abstract

The utility model discloses a pole welding tool, which comprises: the supporting device comprises a vertical lifting mechanism with an upward output shaft and a supporting part which is connected with the output shaft of the vertical lifting mechanism and is used for supporting the cover plate; the compressing device is fixedly arranged above the supporting device to be matched with the supporting device to compress the pole, and comprises a fixed plate arranged above the supporting part, a main body part arranged on the fixed plate and corresponding to the position of the pole, a mounting hole arranged on the main body part and corresponding to the position of a pole mounting groove, and a pole pressing part rotatably arranged in the mounting hole; the pole pressing part is coaxially arranged with the output shaft of the vertical lifting mechanism and is provided with a clearance part which vertically penetrates through for the welding head to pass through downwards; and the rotating device is used for driving the pole pressing part to rotate so as to change the position of the clearance part.

Description

Pole welding tooling

Technical Field

The utility model relates to the technical field of tooling fixtures, in particular to a pole welding tooling.

Background Art

Lithium batteries have been successfully used in consumer electronics such as mobile phones and laptops due to their high energy density and portability. With the development of emerging industries such as new energy vehicles, renewable energy and smart grids, the research and development of power lithium batteries with high safety, long life, high capacity and low cost has become a research frontier.

The top cover of the power battery is an important component of the lithium-ion battery, which mainly includes a cover plate, a pole assembled on the cover plate, a sealing ring and an insulating part, etc. The pole can be connected to the cover plate as a whole through a welding process. When welding the pole, a pole welding tool is usually used to limit the cover plate and the pole. The existing pole welding tool mainly includes a support part for supporting and limiting the cover plate and a clamping device for clamping the pole placed in the pole mounting groove on the cover plate. The clamping device includes a pole holding part. The pole holding part rotates around the rotation axis with the center of the cover plate as the rotation axis. The pole holding part has a clearance part that passes through in the vertical direction. By rotating the pole holding part to make the clearance part rotate around the periphery of the pole, the laser welding machine can pass through the clearance part to weld around the edge of the pole to form a closed welding line.

In the above pole welding fixture, the clamping device is arranged in a vertically liftable manner directly above the support part. The lifting stroke is determined by the distance between the pole pressing part and the pole. The lifting stroke is usually small, which is extremely inconvenient when taking and placing the cover plate or the battery top cover after welding. The main structure and driving method of the clamping device of the above battery top cover pole fixture are as follows: it has a vertically arranged driving mechanism with the output end facing upward, a pressing arm connected to the output end, and a pole pressure head connected to the pressing arm away from the output end. When the pole needs to be pressed, the output end is retracted downward, driving the pole pressure head to move downward and press on the upper surface of the pole. This structure and its driving method have the following defects: the axis of the output shaft and the axis of the pole pressure head are not on the same axis, and the clamping force and stability cannot be guaranteed, resulting in a large degree of oblique pressure of the pole pressure head on the pole, affecting the welding quality between the pole and the battery top cover.

Utility Model Content

In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a pole welding tool which can prevent the oblique pressure problem and facilitate loading and unloading.

In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a pole welding tool, including:

The supporting device comprises a vertical lifting mechanism with an output shaft facing upward and a supporting part connected to the output shaft of the vertical lifting mechanism and used to support the cover plate;

A clamping device is fixedly mounted above the supporting device to cooperate with the supporting device to clamp the pole, the clamping device comprises a fixed plate mounted above the supporting portion, a main body arranged on the fixed plate at a position corresponding to the pole, a mounting hole arranged on the main body at a position corresponding to the pole mounting groove, and a pole holding portion rotatably arranged in the mounting hole; the pole holding portion is coaxially arranged with the output shaft of the vertical lifting mechanism, and the pole holding portion has a vertically penetrating avoidance portion for the welding head to pass downward; and

The rotating device is used to drive the pole pressing portion to rotate so as to change the position of the air-avoiding portion.

Furthermore, it also includes a linear moving module, which includes a track arranged in a horizontal direction below the clamping device and a linear driving mechanism, a part of the track is located directly below the clamping device to form a welding position, and another part of the track outside the welding position forms an upper/lower material position; the supporting device is slidably arranged on the track, and the linear driving mechanism is used to drive the supporting device to reciprocate between the upper/lower material position and the welding position.

Furthermore, the supporting device includes a base, and two of the vertical lifting mechanisms are arranged one by one at the positions of the base opposite to the two poles, and the output shafts of the two vertical lifting mechanisms are coaxially arranged with the corresponding poles; a guide rod group sliding in a vertical direction is arranged on the base, and the upper end of the guide rod group is connected to the supporting part; a horizontal detection module for detecting whether the supporting part is in a horizontal state is arranged on the base, and the horizontal detection module is electrically connected to a control module, and the control module is electrically connected to the two vertical lifting mechanisms.

Furthermore, the supporting portion includes a second base plate connected to the output shaft of the vertical lifting mechanism and a supporting plate arranged on the second base plate and having a shape adapted to the cover plate, positioning portions which are positioned and matched with the stationary plate are arranged on two opposite sides of the second base plate, and a positioning matching portion is arranged on the stationary plate at a position corresponding to the positioning portion.

Furthermore, a first through hole penetrating in the vertical direction and adapted to the shape of the cover plate is provided at a position on the fixed plate corresponding to the cover plate; assembly holes for assembling the main body are provided on both lateral sides of the first through hole on the fixed plate, and the main body is assembled on the assembly hole through an assembly part and is located on the lower surface of the fixed plate.

Further, the assembly hole is defined as a strip hole provided on the fixed plate along the length direction of the cover plate, and the assembly part can slide along the length direction of the strip hole before the main body is fastened;

The strip-shaped hole is defined as a stepped hole that is arranged to penetrate in the vertical direction, and the large hole section of the stepped hole is located above the small hole section; the assembly part includes a cap part that slides in the large hole section and a rod part that slides in the small hole section, and a locking bolt is threaded on the assembly part, and the locking end of the locking bolt passes downward through the rod part to be locked with the main body part.

Furthermore, a convex rib protruding into the small hole section is formed on the main body at a position directly opposite to the rod portion, and a locking hole locked with the locking bolt is provided on the convex rib.

Furthermore, the pole pressing portion includes a rotating ring rotatably arranged in the mounting hole and a pole pressing head, the inner wall of the rotating ring extends radially inward to form a clamping arm, the inner empty space in the rotating ring except the clamping arm forms the air avoidance portion, the pole pressing head is formed at the inner end of the clamping arm at a position corresponding to the pole, and the pole pressing head, the pole and the vertical lifting mechanism are coaxially arranged.

Furthermore, a first assembly ring groove is provided on the upper surface of the main body around the outer edge of the mounting hole, and a second assembly ring groove is provided on the lower surface of the main body around the outer edge of the mounting hole, and a needle bearing is fixedly arranged in the second assembly ring groove; the rotating ring includes an upper rotating section, a lower rotating section and rotating teeth, the upper end of the upper rotating section extends radially outward to form an upper edge placed in the first assembly ring groove, the lower rotating section has a small outer diameter section arranged in the mounting hole and a large outer diameter section passing downward through the mounting hole and connected to the needle bearing, and the rotating teeth are evenly distributed on the outer circumference of the large outer diameter section; the rotating device includes an engaging portion meshing with the rotating teeth and a driving mechanism for driving the engaging portion to move so as to rotate the rotating ring meshed with the engaging portion.

Furthermore, the meshing portion is defined as a rack, and an assembly block is provided on the lower surface of the main body, the assembly block has a bearing portion for bearing the rack, and the rack is slidably disposed on the bearing portion and meshes with the rotating tooth.

The utility model pole welding tool drives the up and down movement of the support part to cooperate with the main body to press the pole and the cover plate by designing a vertical lifting mechanism. The output shaft of the vertical lifting mechanism is coaxially arranged with the pole and the pole pressure head, and the pressing center of gravity is stable, avoiding the problem of oblique pressing of the pole, and increasing the product yield. By setting a linear moving module, the support device can move back and forth in the horizontal direction, and the position misaligned with the pressing device on the horizontal projection plane is set as the upper/lower material position, and the position aligned with the pressing device is set as the pressing welding position, which is convenient for taking and placing the loading pallet. By opening a mounting hole at a corresponding position on the main body and embedding a rotating body, the pressing arm and the rotating body are integrally formed, so that the pole pressure head maintains a stable pressing state, and then the rotating body is rotated by a rotating device designed on the main body. The rotating device is not associated with the pressing device, which reduces disturbance and increases rotation stability. The main body is designed as a stationary structure, so that the pole holding part arranged on the stationary main body is also a stationary structure, which solves the problem of poor stability of the holding force when the pole holding part is driven up and down by the vertical driving mechanism in the traditional technology. In summary, the pole welding tooling of the utility model effectively solves the problem of oblique pressure, is convenient and fast to load and unload, and has a simple structure and ingenious ideas, which can save more manufacturing costs.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

FIG1 is a schematic structural diagram of a battery top cover of the present utility model.

FIG. 2 is a schematic structural diagram of an embodiment of a pole welding tool of the present invention.

FIG. 3 is a schematic diagram of the assembly of the supporting device, the linear motion module and the first base plate.

FIG. 4 is a schematic diagram of the assembly of the loading support plate and the support plate.

FIG. 5 is a top view schematic diagram of the assembly of the clamping device and the loading support plate.

FIG6 is a cross-sectional view taken along line A-A in FIG5.

FIG7 is a cross-sectional view taken along line B-B in FIG5.

FIG. 8 is an enlarged view of a portion B1 in FIG. 6 .

FIG. 9 is an enlarged view of a portion B3 in FIG. 8 .

FIG. 10 is an enlarged view of a portion B2 in FIG. 6 .

FIG. 11 is a schematic upward view of the assembly of the pressing device and the rotating device.

The accompanying drawings in the specification are numeraled as follows:

Battery top cover A; cover plate A1; pole mounting groove A11; through hole A12; first convex ring A13; sealing ring A2; annular inner wall A21; annular outer wall A22; annular connecting portion A23; annular groove A24; pole A3;

First base plate 100; linear moving module 110; track 111; linear driving mechanism 112;

Support device 200; base 210; side plate 211; vertical lifting mechanism 220; support part 230; support plate 231; coarse positioning block 231a; fine positioning pin 231b; second bottom plate 232; positioning part 233; guide rod group 240; sliding sleeve 241; guide rod 242; distance detection unit 250;

The clamping device 300; the fixed plate 310; the positioning matching portion 311; the first through hole 312; the assembly hole 313; the main body 320; the assembly part 321; the cap portion 321a; the rod portion 321b; the convex rib 322; the mounting hole 330; the pole pressing portion 340; the air-avoiding portion 341; the rotating body 342; the upper rotating section 3421; the upper edge 3421a; the lower rotating section 3422; the rotating tooth 3423; the pole pressing head 343; the clamping arm 344; the needle roller bearing 345;

Rotating device 400; driving mechanism 410; rack 420; assembly block 430; bearing portion 431;

The loading support plate 500; the holding handle 510; the rough positioning hole 520; the fine positioning hole 530; the limiting groove 540; the second through hole 550; the large hole section 551; the small hole section 552; the assembly surface 553; the installation positioning column 560; the column body 561; the column cap 562; and the bottom block 570.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

Please refer to Figure 1. The pole welding tool of the utility model is used to fix the battery top cover A when the pole of the battery top cover A is welded to the cover plate. The battery top cover A includes a cover plate A1 having a pole mounting groove A11, a sealing ring A2 assembled at the pole mounting groove A11, and a pole A3, and a through hole A12 is formed in the pole mounting groove A11. Usually, the battery top cover A is provided with two pole mounting grooves A11, and two poles A3 are respectively welded to the two pole mounting grooves A11, and a sealing ring A2 is provided between each pole A3 and the pole mounting groove A11.

Please refer to FIG. 2 , the pole welding tool comprises a first base plate 100, a linear moving module 110 disposed on the first base plate 100, a supporting device 200 disposed on the linear moving module 110, a clamping device 300 fixedly mounted above the supporting device 200, and a rotating device 400. The first base plate 100 is used to provide a mounting platform, so that the linear moving module 110, the supporting device 200, the clamping device 300 and the rotating device 400 are directly or indirectly mounted on the first base plate 100. It can be seen that the first base plate 100 is a non-essential component of the pole welding tool of the present application. In actual use, the pole welding tool can be installed on different components or platforms according to actual needs.

The linear moving module 110 can adopt any existing device capable of driving an object to move linearly back and forth. In the illustrated embodiment, the linear moving module 110 includes a track 111 and a linear drive mechanism 112 arranged below the clamping device 300 along a horizontal direction (the front-to-back direction shown in the figure, the width direction of the cover plate A1). The linear drive mechanism 112 can be defined as a mechanism that can drive an object to move back and forth, such as a cylinder, a hydraulic cylinder, an electric push rod, etc. The track 111 can be composed of one or more monorails, for example, it can be composed of three monorails shown in the figure, and the three monorails are evenly spaced on the first bottom plate 100 along a horizontal direction perpendicular to the moving direction of the linear moving module 110 (the left-right direction shown in the figure, the length direction of the cover plate A1), and each track 111 extends along the front-to-back direction. A portion of the track 111 (for example, the rear end) is located directly below the clamping device 300 to form a welding position, and another portion of the track 111 (for example, the front end) outside the welding position forms an upper/lower material position. The supporting device 200 is slidably disposed on the track 111 , and the linear driving mechanism 112 is used to drive the supporting device 200 to reciprocate between the upper/lower material position and the welding position.

Please refer to Fig. 3, the support device 200 includes a base 210, a vertical lifting mechanism 220 disposed on the base 210 with an output shaft facing upward, and a support portion 230 connected to the output shaft of the vertical lifting mechanism 220 and used to support the cover plate A1. The base 210 is defined as a sliding base slidably disposed on the track 111 and connected to the output shaft of the linear drive mechanism 112. The base 210 can be moved and fixed to the welding position under the action of the linear moving module 110, and can also be moved and fixed to the upper/lower material position under the action of the linear moving module 110.

Two vertical lifting mechanisms 220 are arranged one by one at the positions of the base 210 facing the two poles A3, and the output shafts of the two vertical lifting mechanisms 220 are arranged coaxially with the corresponding poles A3; the base 210 is also provided with a guide rod group 240 sliding in the vertical direction, and the upper end of the guide rod group 240 is connected to the support part 230; the base 210 is also provided with a horizontal detection module for detecting whether the support part 230 is in a horizontal state, and the horizontal detection module is electrically connected to a control module (not shown in the figure), and the control module is electrically connected to the vertical lifting mechanism 220. In the embodiment shown, the base 210 includes a flat plate and two side vertical plates 211, the length direction of the flat plate is consistent with the length direction of the cover plate A1, and the two side vertical plates 211 are respectively arranged on the lateral sides of the flat plate, and the above-mentioned two vertical lifting mechanisms 220 are arranged on the flat plate and located between the two side vertical plates 211. Each side vertical plate 211 is provided with two guide holes opening toward the support portion 230, and a sleeve 241 is fixed in each guide hole. The guide rod group 240 includes guide rods 242 of the same number as the sleeves 241, and the upper end of each guide rod 242 is connected to the support portion 230, and the lower end is slidably inserted into the sleeve 241. The horizontal detection module may include at least three distance detection units 250 arranged at the same horizontal position, at least one of the at least three distance detection units 250 is arranged on one side vertical plate 211 with the detection end facing the support portion 230, and the remaining distance detection units 250 are arranged on the other side vertical plate 211 with the detection end facing the support portion 230.

The support portion 230 may be defined as a support plate 231 directly or indirectly connected to the output shaft of the vertical lifting mechanism 220, and the shape of the support plate 231 is adapted to the shape of the cover plate A1 for supporting and limiting the cover plate A1. In the illustrated embodiment, the support plate 231 is connected to the output shafts of the two vertical lifting mechanisms 220 through a second bottom plate 232, the second bottom plate 232 is coaxially arranged with the support plate 231, the length of the second bottom plate 232 is greater than the length of the support plate 231, and the width is greater than or equal to the width of the support plate 231. The second bottom plate 232 is provided with a positioning portion 233 for positioning and cooperating with the clamping device 300 on two opposite sides in the length direction (i.e., the two ends of the second bottom plate 232) or two opposite sides in the width direction, and the positioning portion 233 may be defined as a positioning convex portion convexly arranged on the two ends of the second bottom plate 232 facing one side of the clamping device 300. The positioning portion 233 is used to cooperate with the pressing device 300 to improve positioning accuracy after the supporting portion 230 rises to a predetermined position.

The cover plate A1 can be directly placed on the support plate 231 of the support part 230, or placed on the support plate 231 through the loading pallet 500. Placing the cover plate A1 on the support plate 231 through the loading pallet 500 means first installing the cover plate A1 on the loading pallet 500, then sequentially installing the sealing ring A2, the pole A3, the pressure cap and the pressure plate on the cover plate A1, and finally installing the loading pallet 500 together with the battery top cover A, the pressure cap and the pressure plate on the support part 230. The advantage of placing the loading pallet 500 on the support part 230 is that it is easy to interchange, saves time and improves efficiency. During the welding process of the current battery top cover A, the loading pallet 500, the battery top cover A and the pressure cap required for the next welding can be prepared. When the solution of placing the battery top cover A directly on the support portion 230 is adopted, the top surface of the support portion 230 can be directly designed as a structure capable of limiting the battery top cover A, such as a limiting structure similar to the structure of the loading pallet 500.

Please refer to FIG. 4 . In this embodiment, the battery top cover A is placed on the support plate 231 through the loading support plate 500. The support plate 231 is provided with a plurality of rough positioning blocks 231a and a plurality of fine positioning pins 231b. Specifically, at least one rough positioning block 231a can be provided on one side edge of the support plate 231, and at least one rough positioning block 231a can be provided on the other side edge (e.g., the opposite side edge) of the support plate 231, so that the loading support plate 500 is roughly limited when it is placed. The fine positioning pins 231b are provided in the area of the support plate 231 located within the rough positioning block 231a. At least two fine positioning pins 231b are provided to prevent the loading support plate 500 from horizontal displacement.

The loading support plate 500 is provided with a gripping handle 510. A coarse positioning hole 520 is formed on the loading support plate 500 corresponding to the outer side surface of the coarse positioning block 231a. The coarse positioning hole 520 penetrates the loading support plate 500 along the height direction and the outer side direction of the loading support plate 500. On the horizontal projection plane, the coarse positioning hole 520 is in an arc shape. A fine positioning hole 530 is formed on the loading support plate 500 at the position corresponding to the fine positioning pin 231b. The fine positioning hole 530 vertically penetrates the loading support plate 500. When placing the loading support plate 500 on the support plate 231, align the coarse positioning hole 520 with the coarse positioning block 231a, and align the fine positioning hole 530 with the fine positioning pin 231b, and place the loading support plate 500 on the support plate 231 from top to bottom. The use of coarse positioning and fine positioning can speed up the time of installing the loading pallet 500 on the support part 230 and improve efficiency.

The upper surface of the loading support plate 500 has a limiting groove 540 for accommodating the cover plate A1 and limiting it. The limiting groove 540 can be realized by the following structure: a limiting block 541 is set on each side of the loading support plate 500, and the upper surface of the limiting block 541 is higher than the upper surface of the loading support plate 500. Each limiting block 541 forms a groove wall of the limiting groove 540, and the upper surface of the area on the loading support plate 500 located within each limiting block 541 forms the groove bottom surface. The limiting groove 540 can also be a common groove structure, for example, a closed frame-shaped groove wall is erected on each side of the loading support plate 500, so that the upper surface of the area of the loading support plate 500 located within the closed frame-shaped groove wall forms the groove bottom surface. For another example, the loading support plate 500 is recessed downward to form the limiting groove 540. A second through hole 550 is formed in the limiting groove 540 at the position of the sealing ring A2 of the cover plate A1, which vertically passes through the loading support plate 500. An installation positioning column 560 for installing and positioning the sealing ring A2 is passed through the second through hole 550. The upper surface of the installation positioning column 560 is higher than the bottom surface of the loading limiting groove 540. When the battery top cover A is placed in the limiting groove 540 of the loading support plate 500, the sealing ring A2 is arranged around the outer periphery of the installation positioning column 560. Please refer to FIG9 , the sealing ring A2 has an annular inner wall A21, an annular outer wall A22 formed outside the annular inner wall A21, and an annular connecting portion A23 connected between the annular inner wall A21 and the annular outer wall A22, the lower surface of the annular connecting portion A23, the annular inner wall A21 and the annular outer wall A22 enclose an annular groove A24 with a notch downward, and a first convex ring A13 protrudes upward from the periphery of the through hole A12 of the pole mounting groove A11 to match the annular groove A24. When the loading support plate 500 is installed on the support plate 231 together with the cover plate A1, the annular inner wall A21 of the sealing ring A2 is arranged around the periphery of the mounting positioning column 560.

Please refer to Figures 6 and 8. The second through hole 550 is a multi-step hole, for example, a two-step hole. The large hole section 551 of the two-step hole is located below the small hole section 552 and penetrates downwardly through the lower surface of the loading support plate 500. The small hole section 552 of the two-step hole penetrates upward through the upper surface of the loading support plate 500. An assembly surface 553 is formed on one end face of the large hole section 551 close to the small hole section 552. A bottom block 570 is detachably connected to the assembly surface 553. A receiving groove 571 is provided on the bottom block 570 at a position (upper surface) corresponding to the installation positioning column 560, and the inner diameter of the receiving groove 571 is larger than the outer diameter of the small hole section 552. The cross section of the installation and positioning column 560 is T-shaped. The T-shaped installation and positioning column 560 has a column 561 that is movably inserted into the small hole section 552 of the two-step hole and a column cap 562 formed at the lower end of the column 561 and having a diameter that matches the inner diameter of the receiving groove 571. The height of the column 561 is greater than the height of the small hole section 552, and the height of the column cap 562 is matched with the depth of the receiving groove 571 (for example, less than the depth of the receiving groove 571). When the upper surface of the column cap 562 of the installation and positioning column 560 abuts against the assembly surface 553, the upper end of the column 561 protrudes from the bottom surface of the limiting groove 540. Preferably, an elastic member (not shown) is provided between the bottom block 570 and the column cap 562. The elastic member may be a coil spring. The upper and lower ends of the coil spring may be fixedly connected to the column cap 562 and the bottom block 570, respectively, or may be independent of the installation and positioning column 560 and the bottom block 570. During assembly, the installation and positioning column 560 is first assembled from bottom to top in the large hole section 551 and the small hole section 552, and then the elastic member and the bottom block 570 are assembled in sequence. The bottom block 570 may be screwed to the assembly surface 553 by bolts. With such a design, when the pole pressing portion of the pressing device 300 presses down the pole A3, the coil spring allows the pole A3 to have a certain elastic avoidance distance. When welding the pole A3, the pole A3 is subjected to downward pressure, causing the installation positioning column 560 to move slightly downward, thereby being able to better press the pole A3 and the sealing ring A2. When the welding is completed and the pole pressing portion rises, the installation positioning column 560 is reset upward under the action of the elastic member.

Please refer to Figures 5, 6 and 7. The clamping device 300 is a passive clamping device 300, that is, the clamping device 300 is fixed, so that the support part 230 is actively lifted and lowered to cooperate with the clamping device 300 to clamp the pole A3. The clamping device 300 is fixedly mounted above the support device 200 to cooperate with the support device 200 to clamp the pole A3. The clamping device 300 includes a fixed plate 310 (i.e., a fixed plate-like structure, also referred to as a fixed plate) mounted above the support part 230, a main body 320 disposed at a position corresponding to the pole A3 on the fixed plate 310, a mounting hole 330 disposed at a position corresponding to the pole mounting groove A11 on the main body 320, and a pole holding part 340 rotatably disposed in the mounting hole 330, wherein the pole holding part 340 has a vertically penetrating spacer 341 for the welding head to pass downward.

The immovable plate 310 is mounted on the first bottom plate 100 through the side frames provided at both ends thereof, so as to be fixedly located above the supporting device 200. A positioning matching portion 311 is provided on the lower surface of the immovable plate 310 at a position directly opposite to the positioning portion 233, and the positioning matching portion 311 can be defined as a matching concave portion that matches the above-mentioned positioning convex portion. A first through hole 312 that penetrates in the vertical direction and matches the shape of the cover plate A1 is provided on the immovable plate 310 at a position corresponding to the cover plate A1. The first through hole 312 is an operation hole, which is convenient for the laser welding head to weld the pole A3. The immovable plate 310 is provided with assembly holes 313 for assembling the main body 320 on both sides of the first through hole 312 in the horizontal direction. The assembly holes 313 can be defined as strip holes provided on the immovable plate 310 along the length direction of the cover plate A1. The strip holes are defined as stepped holes provided through in the vertical direction, and the large hole section of the stepped hole is located above the small hole section. The strip holes are used to adjust the position of the main body 320 according to actual needs when assembling the main body 320.

The number of the main body 320 can be configured as two corresponding to the two poles A3 (the solution adopted in this embodiment), or it can be configured as an integral plate-like structure whose length is adapted to the cover plate A1. The main body 320 is assembled in the corresponding strip hole through the assembly part 321 and is located on the lower surface of the fixed plate 310. The assembly part 321 can slide along the length direction of the strip hole before the main body 320 is tightened. The shape of the assembly part 321 is adapted to the step hole, including a cap part 321a that is slidably fitted in the large hole section and a rod part 321b that is slidably fitted in the small hole section. A locking bolt is screwed on the assembly part 321, and the locking end of the locking bolt passes downward through the rod part 321b to lock with the main body 320. A convex rib 322 that protrudes into the small hole section is formed on the upper surface of the main body 320 at a position opposite to the rod portion 321 b , and a locking hole that is locked with the locking bolt is provided on the convex rib 322 .

The pole pressing part 340 includes a rotating body 342 rotatably arranged in the mounting hole 330 and a pole pressing head 343 arranged on the rotating body 342 at a position corresponding to the pole A3, and the pole pressing head 343 is coaxially arranged with the pole A3 and the output shaft of the vertical lifting mechanism 220. The rotating body 342 can be a solid flat cylindrical structure. The rotating body 342 can be rotatably connected to the mounting hole 330 by any rotatable structure or method, for example, a bearing is embedded in the mounting hole 330, and the rotating body 342 is rotatably connected to the mounting hole 330 through the bearing, for example, an annular groove is provided in the hole wall of the mounting hole 330, and a second convex ring rotatably matched with the annular groove is provided at the position of the rotating body 342 corresponding to the annular groove, and another example is provided in the hole wall of the mounting hole 330, and a ball structure is provided at the position of the rotating body 342 corresponding to the annular ball groove, and the like. The avoidance portion 341 passes through the rotating body 342 in the vertical direction. On the horizontal projection plane, the portion of the rotating body 342 located between the pole pressure head 343 and the hole wall of the mounting hole 330 forms a shielding portion (clamping arm), and the shielding portion rotates to change its position under the drive of the rotating device 400.

Please refer to FIG. 10 and FIG. 11 , the rotating body 342 can also be a rotating ring with a hollow structure, the inner wall of the rotating ring extends radially inward to form a clamping arm 344, the inner hollow space in the rotating ring except the clamping arm 344 forms the avoiding portion 341, and on the horizontal projection plane, the clamping arm 344 forms a shielding portion that shields the battery top cover A. In the illustrated embodiment, the rotating ring is rotatably connected to the mounting hole 330 via a needle bearing 345. The rotating ring includes an upper rotating section 3421, a lower rotating section 3422 and a rotating tooth 3423, and the upper rotating section 3421 is provided with a plurality of first connecting holes distributed along its circumference, the first connecting holes penetrate the upper and lower end surfaces of the upper rotating section 3421 along the axial direction, and the upper end of the upper rotating section 3421 also extends radially outward to form an upper edge 3421a. A second connection hole is also provided on the lower rotating section 3422 at a position corresponding to the first connection hole. The second connection hole axially penetrates the upper end surface of the lower rotating section 3422. The lower rotating section 3422 and the upper rotating section 3421 are detachably connected through the first connection hole and the second connection hole. The lower rotating section 3422 has a small outer diameter section provided in the mounting hole 330 and a large outer diameter section passing through the mounting hole 330 downward and connected to the needle bearing 345. The rotating teeth 3423 are evenly distributed on the outer circumference of the large outer diameter section. Corresponding to the rotating ring structure, a first assembly ring groove 331 is provided on the upper surface of the main body 320 around the outer edge of the mounting hole 330, and the upper edge 3421a of the upper rotating section 3421 is placed in the first assembly ring groove 331. A second assembly ring groove 332 is disposed on the lower surface of the main body 320 around the outer edge of the mounting hole 330 , and the needle bearing 345 is fixedly disposed in the second assembly ring groove 332 . The large outer diameter section is connected to the rotating part of the needle bearing 345 .

The clamping arm 344 is formed by extending radially inward from the inner wall of the lower rotating section 3422. In order to ensure the firmness of the connection between the clamping arm 344 and the rotating ring while reducing the inner space of the rotating ring as much as possible, the clamping arm 344 is a fan-shaped structure, and the two side surfaces of the clamping arm 344 are concave arc surfaces. On the horizontal projection plane, the clamping arm 344 partially blocks the cover plate A1 along the radial direction. The clamping arm 344 rotates under the drive of the rotating device 400 to change the position of the clamping arm 344, so that the air-avoiding portion 341 follows the changed position, thereby ensuring that the welding head completes the welding at one time and forms a weld seam that is closed from beginning to end. The pole pressing head 343 is formed at the inner end of the clamping arm 344 at a position corresponding to the pole A3 (the lower surface of the inner end of the clamping arm 344) and is rotatably connected to the clamping arm 344, so that when the rotating ring drives the clamping arm 344 to rotate and make way, the pole pressing head 343 does not rotate, which can prevent the position of the pole A3 from being disturbed due to the rotation of the pressure cap, further avoid the oblique pressure problem, and improve the welding accuracy of the pole A3.

The rotating device 400 includes a meshing portion meshing with the rotating gear 3423 and a driving mechanism 410 for driving the meshing portion to rotate the rotating ring meshed with the meshing portion. The meshing portion is a rack 420, which is slidably disposed on the lower surface of the main body 320 through an assembly block 430 and meshed with the rotating gear 3423. The assembly block 430 has a bearing portion 431 for bearing the rack 420, and the rack 420 is slidably disposed on the bearing portion 431. The driving mechanism 410 is a reciprocating driving mechanism for driving the rack 420 to reciprocate so as to rotate the rotating ring. The reciprocating driving mechanism is disposed on the main body 320 through a mounting frame, and its driving shaft is connected to the rack 420. The reciprocating driving mechanism can be a linear motion push rod motor, a cylinder, a hydraulic cylinder, etc. In some embodiments, the meshing portion may also be a gear meshing with the rotating tooth 3423. Correspondingly, the driving mechanism 410 is a rotating driving mechanism coaxially connected to the gear to drive the gear to rotate, such as a rotating cylinder, a rotating motor, etc.

The working principle of the pole welding tool of the utility model is as follows: first, the cover plate A1 is placed in the limiting groove 540 of the loading support plate 500 in sequence, the sealing ring A2 is installed at the position of the through hole A12 of the pole mounting groove A11, the pole A3 is installed in the pole mounting groove A11, and the pressure cap is covered on the pole A3; secondly, the linear drive mechanism 112 drives the support device 200 to move to the upper/lower material position, the loading support plate 500 is placed on the support part 230, and the linear drive mechanism 112 drives the support device 200 to move to the welding position; then, the vertical lifting mechanism 220 pushes the support part 230, so that the battery top cover A and The cap moves upward until the cap is tightly pressed against the pole pressure head 343 and the cover plate A1 is tightly pressed against the lower surface of the main body 320; then, the pole A3 is welded, and when the welding head welds the edge of the pole A3 with the pole mounting groove A11, the rotating device 400 causes the rotating ring to rotate to drive the clamping arm 344 to rotate and make way (rotate along the circular welding trajectory to avoid the welding head), thereby completing a circle of welds connected end to end; finally, when the welding of the pole A3 is completed, the vertical lifting mechanism 220 drives the support part 230 to descend to the predetermined position, and the linear drive mechanism 112 drives the support device 200 back to the upper/lower material position, and takes out the loading pallet 500 for the next round of pole A3 welding.

The utility model pole welding tool drives the up and down movement of the support part to cooperate with the main body to press the pole and the cover plate by designing a vertical lifting mechanism. The output shaft of the vertical lifting mechanism is coaxially arranged with the pole and the pole pressure head, and the pressing center of gravity is stable, avoiding the problem of oblique pressing of the pole, and increasing the product yield. By setting a linear moving module, the support device can move back and forth in the horizontal direction, and the position misaligned with the pressing device on the horizontal projection plane is set as the upper/lower material position, and the position aligned with the pressing device is set as the pressing welding position, which is convenient for taking and placing the loading pallet. By opening a mounting hole at a corresponding position on the main body and embedding a rotating body, the pressing arm and the rotating body are integrally formed, so that the pole pressure head maintains a stable pressing state, and then the rotating body is rotated by a rotating device designed on the main body. The rotating device is not associated with the pressing device, which reduces disturbance and increases rotation stability. The main body is designed as a stationary structure, so that the pole holding part arranged on the stationary main body is also a stationary structure, which solves the problem of poor stability of the holding force when the pole holding part is driven up and down by the vertical driving mechanism in the traditional technology. In summary, the pole welding tooling of the utility model effectively solves the problem of oblique pressure, is convenient and fast to load and unload, and has a simple structure and ingenious ideas, which can save more manufacturing costs.

The above embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims (10)

1. A utmost point post welding frock, its characterized in that includes:

The supporting device comprises a vertical lifting mechanism with an upward output shaft and a supporting part which is connected with the output shaft of the vertical lifting mechanism and is used for supporting the cover plate;

The compressing device is fixedly arranged above the supporting device to be matched with the supporting device to compress the pole, and comprises a fixed plate arranged above the supporting part, a main body part arranged on the fixed plate and corresponding to the position of the pole, a mounting hole arranged on the main body part and corresponding to the position of a pole mounting groove, and a pole pressing part rotatably arranged in the mounting hole; the pole pressing part is coaxially arranged with the output shaft of the vertical lifting mechanism and is provided with a clearance part which vertically penetrates through for the welding head to pass through downwards; and

And the rotating device is used for driving the pole pressing part to rotate so as to change the position of the clearance part.

2. The pole welding fixture of claim 1, wherein: the linear movement module comprises a track and a linear driving mechanism, wherein the track is arranged below the pressing device along a horizontal direction, one part of the track is positioned right below the pressing device to form a welding position, and the other part of the track is positioned outside the welding position to form an upper/lower material level; the support device is arranged on the track in a sliding way, and the linear driving mechanism is used for driving the support device to reciprocate between an up/down material level and the welding position.

3. The pole welding fixture of claim 1, wherein: the supporting device comprises a base, two vertical lifting mechanisms are arranged on the base, opposite to the positions of the two polar posts, in one-to-one correspondence, and output shafts of the two vertical lifting mechanisms are coaxially arranged with the corresponding polar posts; the base is provided with a guide rod group sliding along the vertical direction, and the upper end of the guide rod group is connected with the supporting part; the base is provided with a horizontal detection module used for detecting whether the supporting part is in a horizontal state or not, the horizontal detection module is electrically connected with a control module, and the control module is electrically connected with two vertical lifting mechanisms.

4. The pole welding fixture of claim 1, wherein: the supporting part comprises a second bottom plate connected with an output shaft of the vertical lifting mechanism and a supporting plate which is arranged on the second bottom plate and is matched with the cover plate in shape, positioning parts matched with the fixed plates are arranged on two opposite sides of the second bottom plate, and positioning matching parts are arranged on the fixed plates at positions corresponding to the positioning parts.

5. The pole welding fixture of claim 1, wherein: the fixed plate is provided with a first through hole which is communicated in the vertical direction and is matched with the shape of the cover plate at the position corresponding to the cover plate; the fixed plate is provided with assembly holes for assembling the main body part on two lateral sides of the first through hole, the main body part is assembled on the assembly hole through an assembly part and is positioned on the lower surface of the stationary plate.

6. The pole welding fixture of claim 5, wherein: the fitting hole is defined as a bar-shaped hole provided on the stationary plate in a longitudinal direction of the cover plate, and the fitting is slidable in the longitudinal direction of the bar-shaped hole before the main body portion is not fastened;

The strip-shaped hole is defined as a step hole which is arranged in a penetrating manner along the vertical direction, and the large hole section of the step hole is positioned at the small hole Duan Zhishang; the assembly part comprises a cap part and a rod part, wherein the cap part is in sliding fit with the large hole section, the rod part is in sliding fit with the small hole section, a locking bolt is screwed on the assembly part, and the locking end of the locking bolt penetrates out of the rod part downwards to be locked with the main body part.

7. The pole welding fixture of claim 6, wherein: the main body part is provided with a convex rib protruding into the small Kong Duanzhong at the position opposite to the rod part, and the convex rib is provided with a lock hole locked with the locking bolt.

8. The pole welding tool according to any one of claims 1 to 7, wherein: the pole pressing part comprises a rotating ring and a pole pressing head, wherein the rotating ring and the pole pressing head are rotatably arranged in the mounting hole, a pressing arm is formed by extending the inner wall of the rotating ring inwards in the radial direction, an empty space except for the pressing arm in the rotating ring is formed into the empty avoiding part, the pole pressing head is formed at the position, corresponding to the pole, of the inner end of the pressing arm, and the pole pressing head, the pole and the vertical lifting mechanism are coaxially arranged.

9. The pole welding fixture of claim 8, wherein: the upper surface of the main body part is provided with a first assembly ring groove around the outer edge of the mounting hole, the lower surface of the main body part is provided with a second assembly ring groove around the outer edge of the mounting hole, and a needle bearing is fixedly arranged in the second assembly ring groove; the rotating ring comprises an upper rotating section, a lower rotating section and rotating teeth, the upper end of the upper rotating section extends radially outwards to form an upper edge arranged in the first assembly ring groove, the lower rotating section is provided with a small outer diameter section arranged in the mounting hole and a large outer diameter section penetrating out of the mounting hole downwards and connected with the needle bearing, and the rotating teeth are uniformly distributed on the periphery of the large outer diameter section; the rotating device comprises an engagement part engaged with the rotating teeth and a driving mechanism for driving the engagement part to act so as to rotate the rotating ring engaged with the engagement part.

10. The pole welding fixture of claim 9, wherein: the engagement portion is defined as a rack, and a fitting block having a bearing portion bearing the rack is provided on a lower surface of the main body portion, and the rack is slidably provided on the bearing portion and engaged with the turning gear.