Butt joint device for lithium battery tab welding

Abstract

The utility model discloses a butt joint device for lithium battery tab welding, and particularly relates to the technical field of welding butt joint, the butt joint device mainly comprises a supporting frame, a screw rod is rotatably connected to the inner wall of the supporting frame, one end of the screw rod extends to the outside of the supporting frame and is coaxially connected with a gear motor in a transmission mode, and a linkage adjusting mechanism is arranged on the outer wall of the screw rod; the linkage adjusting mechanism comprises two threaded sleeve blocks which are arranged on the outer wall of the threaded rod in a threaded mode, and one side of each threaded sleeve block is fixedly connected with a supporting strip. The linkage adjusting mechanism is adopted, the distance between the two rows of lithium battery tabs, rotation of the screw in the supporting frame and the distance between the two rows of butt joint rings can be synchronously adjusted to be close, the lithium battery tabs with different widths can be adjusted and butt-jointed in batches, and the butt joint welding efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding butt joint, and more specifically, to a butt joint device for welding a lithium battery tab. Background Art

[0002] The docking device for lithium battery tab welding is of great use in the production and manufacturing process of lithium batteries. Its main use is to improve welding efficiency. The docking device can accurately locate the welding position of the tab and the battery cell, so that welding equipment such as laser or ultrasonic wave can complete the welding operation efficiently and accurately. This precise positioning and fast operation can greatly improve welding efficiency and shorten the production cycle.

[0003] After searching the existing public documents, the patent publication number CN220259911U discloses a battery tab welding device. The welding docking tool can clamp and fix the battery and tab placed on two base blocks by installing a clamping mechanism on the base block, and then drive the two base blocks to approach each other through the driving mechanism, so as to facilitate the docking of the welding seam between the battery electrode and the tab to the bottom of the welding head of the welding machine, thereby realizing the automatic docking between the battery electrode and the tab, avoiding the phenomenon of uneven force in manual docking, thereby avoiding subsequent welding dislocation or cold welding, and facilitating actual welding operations; however, the docking device has the following defects;

[0004] When the docking device performs butt welding on the lithium battery tabs, the lithium battery tabs need to be docked one by one and placed on the lithium battery, which makes it difficult to adjust and dock lithium battery tabs of different widths in batches. Adjusting the docking position of the tabs one by one is inefficient. Therefore, a docking device for lithium battery tab welding is provided. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a docking device for welding lithium battery tabs.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a docking device for lithium battery tab welding, comprising a support frame, the inner wall of the support frame is rotatably connected to a screw, one end of the screw extends to the outside of the support frame and is coaxially connected to a reduction motor, and the outer wall of the screw is provided with a linkage adjustment mechanism; the linkage adjustment mechanism comprises two threaded sleeves arranged on the outer wall of the screw, one side of each of the threaded sleeves is fixedly connected to a support bar, a plurality of sleeve blocks are installed at the bottom end of the support bar, and the sleeve blocks are fixedly connected to the support bar;

[0007] The inner wall of the sleeve block is installed with a connecting pillar, and the multiple sleeve blocks are fixedly connected to the connecting pillars. A docking ring is welded on one side of each sleeve block, and a welding groove is embedded in the bottom end of the docking ring. The two threaded sleeves are slidably connected to the support frame. The outer walls of the two threaded sleeves are set as smooth surfaces. The two threads on the outer wall of the screw are opposite and symmetrical. The two threaded sleeves are symmetrically arranged about the middle of the support frame. A support column is fixedly connected between the reduction motor and the support frame, and a gap is opened between the screw and the support column. The top of each docking ring is fixedly connected to a support ring, and the cross-sectional shape of the support ring is circular.

[0008] When using the technical solution, according to the spacing between the two rows of lithium battery tabs, the reduction motor drives the screw to rotate, and the screw carries two threaded sleeves to move closer to each other under the action of the thread transmission force, and the two support bars carry sleeve blocks to move closer to each other. The sleeve blocks drive the docking ring to move the support ring, and the spacing between the two rows of docking rings can be adjusted to move closer synchronously. When adjusted to the specified spacing, the tab is inserted into the support ring, and the tab moves down along the docking ring through the support ring, and the tab and the lithium battery are docked, and then the welding tool moves in an arc from the welding groove position for welding.

[0009] Preferably, two reinforcement support plates are fixedly installed in front of the support frame, and a guide lifting mechanism is provided between the two reinforcement support plates; the guide lifting mechanism includes a connecting support plate fixedly arranged between the two reinforcement support plates, and the top of the support frame is provided with a connecting rod and a push block in sequence from bottom to top, and the push block and the support frame are fixedly connected to the connecting rod; an electric cylinder is fixedly installed at the bottom end of the push block and located on one side of the connecting rod, and a sliding column fixedly connected to the push block is provided between the electric cylinder and the connecting rod; the outer wall of the sliding column is slidably connected to the connecting support plate, and a switch fixedly installed to the connecting support plate is provided on one side of the electric cylinder; two mounting holes are penetrated at the bottom ends of the two reinforcement support plates, and the two reinforcement support plates are symmetrically arranged about the connecting support plate, and the vertical cross-section of the reinforcement support plate is rectangular.

[0010] According to the technical solution, when in use, two reinforcement support plates support the connecting support plate, the electric cylinder pushes the push block upward, and the push block drives the slide column upward. The connecting rod drives the support frame upward, the two threaded sleeve blocks move upward synchronously, the two support bars carry the two sleeve blocks upward respectively, the connecting pillar can synchronously drive multiple sleeve blocks upward, and the docking ring and the welded pole ear are moved upward and separated.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model adopts a linkage adjustment mechanism. According to the spacing between the two rows of lithium battery tabs, the reduction motor drives the screw to rotate, and the screw rotates inside the support frame. The two threaded sleeves can respectively carry two support bars close to each other, and the spacing between the two rows of docking rings can be adjusted and close synchronously. The lithium battery tabs of different widths can be adjusted and docked in batches, and the efficiency of docking welding is greatly improved;

[0013] 2. The utility model adopts a guide lifting mechanism, two reinforced support plates support the connecting support plate, the electric cylinder pushes the push block to move upward, the push block carries the connecting rod to move upward, the support frame carries the screw to make the two threaded sleeves move upward synchronously, and the two threaded sleeves respectively carry two support bars to move upward synchronously, which can realize the upward separation operation of multiple docking rings and welded pole ears. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of the butt joint device for lithium battery tab welding.

[0015] Figure 2 It is a schematic diagram of the partial structure of the connection between the support bar and the threaded sleeve block of the utility model.

[0016] Figure 3 The utility model is a bottom view of the structure of the butt joint device for welding lithium battery tabs.

[0017] Figure 4 The utility model is a schematic diagram of the partial structure of the connection between the threaded sleeve block and the screw rod when viewed from above.

[0018] Figure 5 It is a schematic diagram of the partial structure of the connection between the support bar and the socket block of the utility model.

[0019] Figure 6 It is a schematic diagram of the local structure of the connection between the connecting rod and the push block of the utility model.

[0020] The accompanying drawings are marked as follows: 1. support frame; 2. screw rod; 3. reduction motor; 4. threaded sleeve block; 5. support bar; 6. sleeve block; 7. connecting pillar; 8. docking ring; 9. welding groove; 10. support column; 11. support ring; 12. reinforcement support plate; 13. connecting support plate; 14. connecting rod; 15. push block; 16. electric cylinder; 17. sliding column; 18. switch; 19. mounting hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] As attached Figure 1-6 A docking device for lithium battery tab welding is shown, and a linkage adjustment mechanism is provided on the docking device for lithium battery tab welding. The setting of the linkage adjustment mechanism can make the distance between the two rows of docking rings 8 be adjusted and close synchronously, and lithium battery tabs of different widths can be adjusted and docked in batches, and the efficiency of docking welding is greatly improved. The specific structural setting of the linkage adjustment mechanism is as follows.

[0023] In this embodiment, as shown in the attached Figure 1-5 As shown, the outer wall of the screw rod 2 is provided with a linkage adjustment mechanism; the linkage adjustment mechanism includes two threaded sleeves 4 threadedly arranged on the outer wall of the screw rod 2, one side of each threaded sleeve 4 is fixedly connected with a support bar 5, and the bottom end of the support bar 5 is installed with a plurality of sleeve blocks 6, and the sleeve blocks 6 are fixedly connected to the support bar 5; the inner wall of the sleeve block 6 is installed with a connecting pillar 7, and the plurality of sleeve blocks 6 are fixedly connected to the connecting pillar 7, one side of each sleeve block 6 is welded with a docking ring 8, and a welding groove 9 is embedded in the bottom end of the docking ring 8.

[0024] When the docking device for lithium battery tab welding of the present technical solution is used, the two mounting holes 19 on the two reinforcement support plates 12 are inserted with bolts to fix the reinforcement support plates 12. The two reinforcement support plates 12 support the support frame 1. According to the spacing between the two rows of lithium battery tabs, the reduction motor 3 is supported by the support column 10. The switch 18 is pressed, and the switch 18 starts the reduction motor 3. The reduction motor 3 drives the screw 2 to rotate, and the screw 2 rotates inside the support frame 1. The screw 2 carries two threaded sleeves 4 to approach each other under the action of the thread transmission force. The two threaded sleeves 4 can respectively carry two support bars 5 to approach each other, and the two support bars 5 respectively carry the socket blocks 6 to approach each other. The socket block 6 drives the connecting pillar 7 to move other socket blocks 6, and the socket block 6 drives the docking ring 8 to move the support ring 11. The spacing between the two rows of docking rings 8 can be adjusted synchronously to be close. When adjusted to the specified spacing, the lithium battery is placed under the docking ring 8, and the pole ear is inserted into the support ring 11. The support ring 11 moves down along the docking ring 8, and the pole ear and the lithium battery are docked. Then the welding tool moves in an arc from the welding groove 9 to weld the pole ear and the lithium battery. The welding positions of the two rows of pole ears can be adjusted synchronously for docking. After the docking is adjusted, the lithium battery pole ear welding efficiency is greatly improved.

[0025] In this embodiment, as shown in the attached Figure 2-5 As shown, a support column 10 is fixedly connected between the reduction motor 3 and the support frame 1, and a gap is provided between the screw rod 2 and the support column 10. The reduction motor 3 is supported by the support column 10, and the stability of the reduction motor 3 when in use is increased. A support ring 11 is fixedly connected to the top of each docking ring 8, and the cross-sectional shape of the support ring 11 is a circular ring. The support ring 11 is guided to dock with the lithium battery pole ear, and the efficiency of docking welding is greatly improved.

[0026] In this embodiment, as shown in the attached Figure 2-6 As shown, two reinforcing support plates 12 are fixedly installed in front of the support frame 1, and a guide lifting mechanism is provided between the two reinforcing support plates 12; the guide lifting mechanism includes a connecting support plate 13 fixedly arranged between the two reinforcing support plates 12, and a connecting rod 14 and a push block 15 are provided at the top of the support frame 1 from bottom to top, and the push block 15 and the support frame 1 are fixedly connected to the connecting rod 14; an electric cylinder 16 is fixedly installed at the bottom end of the push block 15 and located on one side of the connecting rod 14, and a sliding column 17 fixedly connected to the push block 15 is provided between the electric cylinder 16 and the connecting rod 14; the outer wall of the sliding column 17 is slidably connected to the connecting support plate 13, and a switch 18 fixedly installed to the connecting support plate 13 is provided on one side of the electric cylinder 16; two mounting holes 19 are penetrated at the bottom ends of the two reinforcing support plates 12, and the two reinforcing support plates 12 are symmetrically arranged about the connecting support plate 13, and the vertical cross-section of the reinforcing support plate 12 is rectangular.

[0027] According to the upper structure, when in use, bolts are inserted through the two mounting holes 19 on the two reinforcing support plates 12, the two reinforcing support plates 12 are fixed, the two reinforcing support plates 12 support the connecting support plate 13, the switch 18 starts the electric cylinder 16, the electric cylinder 16 pushes the push block 15 to move upward, the push block 15 carries the connecting rod 14 to move upward, and the push block 15 drives the sliding column 17 to move upward. The sliding column 17 slides on the inner wall of the connecting support plate 13, the connecting rod 14 drives the support frame 1 to move upward, the support frame 1 carries the screw rod 2 to make the two threaded sleeves 4 move upward synchronously, the two threaded sleeves 4 respectively carry two support bars 5 to move upward synchronously, the two support bars 5 respectively carry two socket blocks 6 to move upward, the socket block 6 drives the connecting pillar 7 to move upward, the connecting pillar 7 can synchronously drive multiple socket blocks 6 to move upward, the socket block 6 drives the docking ring 8 to move upward, and the docking ring 8 is separated from the welded pole ear.

[0028] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A docking device for lithium battery tab welding, comprising a support frame (1), wherein the inner wall of the support frame (1) is rotatably connected to a screw rod (2), one end of the screw rod (2) extends to the outside of the support frame (1) and is coaxially connected to a reduction motor (3), characterized in that: The outer wall of the screw rod (2) is provided with a linkage adjustment mechanism; The linkage adjustment mechanism comprises two threaded sleeves (4) threadedly arranged on the outer wall of the screw rod (2), one side of each threaded sleeve (4) is fixedly connected to a support bar (5), a plurality of sleeve blocks (6) are installed at the bottom end of the support bar (5), and the sleeve blocks (6) are fixedly connected to the support bar (5); The inner wall of the socket block (6) is provided with a connecting pillar (7), and a plurality of the socket blocks (6) are fixedly connected to the connecting pillar (7). A docking ring (8) is welded on one side of each socket block (6), and a welding groove (9) is embedded in the bottom end of the docking ring (8).

2. A lithium battery tab welding docking device according to claim 1, characterized in that: The two threaded sleeves (4) are both slidably connected to the support frame (1), and the outer walls of the two threaded sleeves (4) are both configured as smooth surfaces.

3. A lithium battery tab welding docking device according to claim 1, characterized in that: The two threads on the outer wall of the screw rod (2) are opposite and symmetrical, and the two threaded sleeve blocks (4) are symmetrically arranged with respect to the middle of the support frame (1).

4. A lithium battery tab welding docking device according to claim 1, characterized in that: A support column (10) is fixedly connected between the reduction motor (3) and the support frame (1), and a gap is provided between the screw rod (2) and the support column (10).

5. A lithium battery tab welding docking device according to claim 1, characterized in that: The top end of each docking ring (8) is fixedly connected to a support ring (11), and the cross-sectional shape of the support ring (11) is annular.

6. A lithium battery tab welding docking device according to claim 1, characterized in that: Two reinforcement support plates (12) are fixedly installed in front of the support frame (1), and a guide lifting mechanism is provided between the two reinforcement support plates (12); The guide lifting mechanism comprises a connecting support plate (13) fixedly arranged between two reinforcing support plates (12); a connecting rod (14) and a push block (15) are arranged at the top of the support frame (1) in sequence from bottom to top; the push block (15) and the support frame (1) are both fixedly connected to the connecting rod (14); An electric cylinder (16) is fixedly installed at the bottom end of the push block (15) and located on one side of the connecting rod (14), and a sliding column (17) fixedly connected to the push block (15) is provided between the electric cylinder (16) and the connecting rod (14); The outer wall of the sliding column (17) is slidably connected to the connecting support plate (13), and a switch (18) fixedly mounted on the connecting support plate (13) is provided on one side of the electric cylinder (16); Two mounting holes (19) are provided through the bottom ends of the two reinforcement support plates (12).

7. A lithium battery tab welding docking device according to claim 6, characterized in that: The two reinforcement support plates (12) are symmetrically arranged with respect to the connecting support plate (13), and the vertical cross-section of the reinforcement support plate (12) is rectangular.

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