Tab bending mechanism

Abstract

The utility model relates to a tab bending mechanism in the bending field, which comprises a bottom plate, the bottom plate is connected with a lifting top plate through a jacking assembly, the top plate is connected with a support plate through a sliding assembly, the support plate can move along the extension direction of the sliding assembly, two vertical plates are vertically arranged on the support plate, and the two vertical plates are arranged on the support plate. Rotatable bending clamping jaws are connected to the inner sides of every two adjacent vertical plates through rotating shafts, the bending clamping jaws can drive the clamping ends of the bending clamping jaws to conduct opening and closing clamping through clamping driving pieces, and one tail end of each rotating shaft penetrates through the corresponding vertical plate to be connected with a bending driving piece used for driving the corresponding rotating shaft to rotate. According to the electrode lug bending device, the bending driving piece can drive the bending clamping jaw on the rotating shaft to rotate stably and flexibly, and meanwhile, the bending clamping jaw can be driven by the clamping driving piece to open and close for clamping, so that the bending driving piece can rotate to conveniently adjust the bending shape and position requirements of the electrode lug, and the production efficiency and effect of electrode lug bending are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bending, especially to the field of tab, specifically relates to tab bending mechanism. BACKGROUND

[0002] Battery tab as an important part of battery is a metal conductor drawn from the positive and negative current collector of the battery, which is used to connect with the battery shell or external module structure to ensure the smooth conduction of current to the outside of the battery. The application of tab is widespread, including but not limited to electronic devices such as mobile phones, notebook computers to large power equipment such as electric vehicles, energy storage systems and many other technical fields. According to the difference of tab number and area, tab design can be divided into single tab, double tab, multi-tab and full tab, etc. to meet the needs of different batteries.

[0003] Tab bending mechanism is mainly applied to the field of battery manufacturing, especially in the process of battery cell production, which is used to bend the tab installed on the battery cell and subjected to the work of pasting rubber. This technology not only relates to the production efficiency and quality of the battery, but also directly affects the capacity and service life of the battery. The existing tab bending mechanism usually includes positioning mechanism, bending mechanism, driving mechanism and other key parts. The positioning mechanism is used to fix the battery cell at a predetermined position to ensure the accuracy during the bending process; the bending mechanism bends the tab to the required angle through mechanical or hydraulic way; the driving mechanism provides power to control the movement of the bending mechanism.

[0004] However, although the existing tab bending mechanism plays an important role in the process of battery manufacturing, there are still some defects. First, the positioning accuracy and bending angle control of some existing mechanisms are not accurate enough, which leads to the shape and position of the bent tab not meeting the requirements, affecting the performance and life of the battery tab, second, the structure of some mechanisms is relatively complex, and the control effect of the tab bending is poor, which affects the bending effect of the tab bending mechanism, and is not conducive to the production efficiency and effect of tab bending. SUMMARY

[0005] The utility model aims at solving the above defects, providing tab bending mechanism to solve the technical problem that the existing tab bending mechanism has poor control effect on tab bending, which affects the performance and life of the battery tab and the production efficiency and effect of tab bending in the background technology.

[0006] The utility model aims at solving the above defects, providing tab bending mechanism to solve the technical problem that the existing tab bending mechanism has poor control effect on tab bending, which affects the performance and life of the battery tab and the production efficiency and effect of tab bending in the background technology.

[0007] The lug bending mechanism comprises a bottom plate, a liftable top plate connected to the bottom plate through a jacking assembly, a support plate connected to the top plate through a sliding assembly, two vertical stand plates arranged on the support plate, two rotatable bending clamps connected to the inner sides of the two adjacent stand plates through a rotating shaft, and a bending drive connected to one end of the rotating shaft and used for driving the rotating shaft to rotate.

[0008] Further in the above description, the jacking assembly comprises a jacking cylinder, a jacking shaft and a connecting shaft sleeve, the jacking cylinder is installed on the bottom plate, the telescopic end of the jacking cylinder penetrates through the bottom plate and is connected to the top plate, the connecting shaft sleeve is installed on the bottom plate, the jacking shaft is coaxially and oppositely installed with the connecting shaft sleeve, and one end of the jacking shaft penetrates through the connecting shaft sleeve and is connected to the top plate.

[0009] The jacking cylinder is arranged to drive the top plate to move up and down, so that the bending clamps connected to the stand plates on the top plate can be matched with the positions of the lugs of the battery cell, thereby facilitating the subsequent bending control of the lugs.

[0010] Further in the above description, the sliding assembly comprises a sliding rail installed on the top plate, a sliding block oppositely installed on the sliding rail and a moving cylinder, the support plate is installed on the sliding block and can slide along the sliding rail through the sliding block, and the moving cylinder is installed on the top plate and connected to the support plate through the telescopic end.

[0011] The sliding cylinder is arranged to drive the support plate to slide along the extension direction of the sliding rail, thereby adjusting the relative positions of the bending clamps and the lugs of the battery cell, and improving the convenient control.

[0012] Further in the above description, the bending drive comprises a driving motor, a driving pulley, a driven pulley and a belt, the driving motor is connected to the stand plate through a motor plate, the telescopic end of the driving motor is coaxially connected to the driving pulley, one end of the rotating shaft penetrates through the stand plate and is coaxially connected to the driven pulley, and one end of the belt penetrates through the driving pulley and the driven pulley in sequence and is connected to the other end of the belt to form a closed loop.

[0013] The driving motor is arranged to drive the driving pulley to rotate, the driven pulley is driven to rotate synchronously through the belt, the driven pulley drives the rotating shaft to rotate, and the bending clamps connected to the end of the rotating shaft can be rotated and bent.

[0014] Specifically, the bending clamps are arranged in two, and the two bending clamps are symmetrically installed on the inner sides of the two stand plates through the rotating shaft.

[0015] The rotation of the driving motor drives the bending clamping jaw to clamp the tab to bend at multiple angles. The two bending clamping jaws are respectively matched with the positive and negative tabs of the battery tab, so that the two tabs of the battery can be bent and controlled respectively, which can improve the convenient control of the tab bending and enhance the effect of the tab bending.

[0016] Further in the above description, the bending clamping jaw is composed of an upper clamping jaw and a lower clamping jaw. The lower clamping jaw is connected with the end of the rotating shaft through a connecting part. The upper clamping jaw and the lower clamping jaw are arranged in an upper / lower opposite manner. The extension end of the clamping driving part is connected with the upper clamping jaw and can drive the upper clamping jaw to open and close relative to the lower clamping jaw.

[0017] The clamping driving part can drive the upper clamping jaw to open and close relative to the lower clamping jaw, so that the upper clamping jaw and the lower clamping jaw can clamp the tab.

[0018] Optionally, the clamping driving part is a clamping cylinder. The upper clamping jaw and the lower clamping jaw are installed on the clamping end of the clamping cylinder.

[0019] Further in the above description, the clamping driving part is installed on the lower clamping jaw. The extension end of the clamping driving part passes through the lower clamping jaw and is connected with the upper clamping jaw. A guide column is connected with the lower clamping jaw through a guide shaft sleeve. One end of the guide column passes through the guide shaft sleeve and is connected with the upper clamping jaw.

[0020] The clamping driving part is a driving cylinder. The driving cylinder can drive the upper clamping jaw to ascend and descend relative to the lower clamping jaw, so that the upper clamping jaw and the lower clamping jaw can clamp the tab.

[0021] Further in the above description, the vertical plate is installed with a pressing cylinder through a connecting plate. The extension end of the pressing cylinder extends to the clamping end of the bending clamping jaw and is connected with a pressing block.

[0022] The pressing cylinder can drive the pressing block to press against the upper surface of the battery cell, so as to prevent the displacement and loosening of the battery cell and improve the stability and reliability of the bending.

[0023] Further in the above description, the support plate is provided with a support cylinder. The extension end of the support cylinder extends to the clamping end of the bending clamping jaw and is connected with a support block.

[0024] The support cylinder can drive the support block to press against the lower surface of the battery cell, so as to further prevent the displacement and loosening of the battery cell due to the downward bending, and improve the stability and reliability of the tab bending.

[0025] The utility model discloses an advantageous effect: through the setting of jacking subassembly and sliding subassembly can drive support plate and move adjustment, can be flexibly adjusted to the height and movement of the folding mechanism, enhanced the positioning accuracy in the ear folding process, improve the adaptability of ear folding, and can according to the different specifications and size of electric core, quick adjustment folding position, improve the stability and reliability of folding, set up two vertical installation's vertical plate on the support plate, through the pivot connection rotatable folding jaw, the last end of pivot passes through vertical plate and connects folding drive part, makes it through folding drive part can drive the folding jaw on the pivot rotatable stably and flexibly, provides reliable mechanical support for the folding of the ear, simultaneously, through clamping drive part can drive the opening and closing clamping of folding jaw, makes the folding jaw can firmly hold the ear, prevents the ear from sliding or falling off in the folding process, ensures the stability and consistency of the ear in the folding process, thereby the rotation of folding drive part can conveniently adjust the shape and position requirement of ear folding, improves the production efficiency and effect of ear folding. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is whole structural schematic diagram of front view angle of this embodiment;

[0027] Figure 2 It is whole structural schematic diagram of rear view angle of this embodiment;

[0028] Figure 3 It is connecting structure schematic diagram of folding drive part in this embodiment;

[0029] Figure 4 It is front view in this embodiment;

[0030] Figure 5 It is Figure 4 Sectional view of A-A in it;

[0031] Figure 6 It is folding connection use schematic diagram of this embodiment;

[0032] The reference signs in the drawing are respectively: 1 - bottom plate, 2 - top plate, 3 - support plate, 4 - vertical plate, 5 - pivot, 6 - clamping drive part, 7 - guide shaft sleeve, 8 - guide column, 9 - pressure cylinder, 10 - pressure block, 11 - support cylinder, 12 - support block, 13 - connecting plate, 14 - connecting part;

[0033] 100 - jacking subassembly, 101 - jacking cylinder, 102 - jacking shaft, 103 - connecting shaft sleeve, 200 - sliding subassembly, 201 - slide rail, 202 - sliding block, 203 - moving cylinder, 300 - folding jaw, 301 - upper jaw, 302 - lower jaw, 400 - folding drive part, 401 - drive motor, 402 - driving wheel, 403 - driven wheel, 404 - belt, 405 - motor plate. DETAILED DESCRIPTION

[0034] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0035] In this embodiment, reference is made to Figures 1-6 The specific implementation of the tab bending mechanism includes a bottom plate 1, a liftable top plate 2 connected to the bottom plate 1 through a jacking assembly 100, the jacking assembly 100 including a jacking cylinder 101, a jacking shaft 102, and a connecting shaft sleeve 103, the jacking cylinder 101 being installed on the bottom plate 1, the telescopic end of the jacking cylinder 101 penetrating through the bottom plate 1 and being connected to the top plate 2, the connecting shaft sleeve 103 being installed on the bottom plate 1, the jacking shaft 102 being coaxially and oppositely installed with the connecting shaft sleeve 103, and one end of the jacking shaft 102 penetrating through the connecting shaft sleeve 103 and being connected to the top plate 2.

[0036] The jacking cylinder 101 can drive the top plate 2 to move up and down, so that the bending clamp jaw 300 connected to the upright plate 4 on the top plate 2 can be matched with the position of the tab of the battery cell, thereby facilitating the subsequent bending control of the tab. The jacking shaft 102 and the connecting shaft sleeve 103 can further improve the stability and reliability of the lifting movement of the top plate 2 and improve the accuracy of the lifting movement of the top plate 2.

[0037] Optionally, in some embodiments, the jacking assembly 100 can be a lead screw lifting module or a belt 404 lifting module.

[0038] The top plate 2 is connected to a support plate 3 through a sliding assembly 200, the sliding assembly 200 including a sliding rail 201 installed on the top plate 2, a sliding block 202 oppositely installed on the sliding rail 201, and a moving cylinder 203, the support plate 3 being installed on the sliding block 202 and being slidable along the sliding rail 201 through the sliding block 202, the moving cylinder 203 being installed on the top plate 2 and the telescopic end of the moving cylinder 203 being connected to the support plate 3. The sliding cylinder can drive the support plate 3 to slide along the extension direction of the sliding rail 201, thereby adjusting the relative position of the bending clamp jaw 300 and the tab of the bending battery cell, and improving the convenient control.

[0039] Optionally, in some embodiments, the sliding assembly 200 can be a lead screw moving module or a belt 404 moving module.

[0040] The support plate 3 can move along the extension direction of the sliding assembly 200, and two vertically symmetrical stand plates 4 are arranged on the support plate 3. The inner sides of the two adjacent stand plates 4 are connected with rotatable bending clamping jaws 300 through rotating shafts 5. The bending clamping jaw 300 is composed of an upper clamping jaw 301 and a lower clamping jaw 302. The lower clamping jaw 302 is connected with the end of the rotating shaft 5 through a connecting part 14. The upper clamping jaw 301 and the lower clamping jaw 302 are arranged in an upper / lower opposite manner. The telescopic end of a clamping driving part 6 is connected with the upper clamping jaw 301 and can drive the upper clamping jaw 301 to open and close relative to the lower clamping jaw 302. The clamping driving part 6 can drive the upper clamping jaw 301 to open and close relative to the lower clamping jaw 302, so that the upper clamping jaw 301 and the lower clamping jaw 302 can clamp the pole ear.

[0041] Optionally, the clamping driving part 6 is a clamping jaw air cylinder, and the upper clamping jaw 301 and the lower clamping jaw 302 are installed on the clamping end of the clamping jaw air cylinder.

[0042] The clamping end of the bending clamping jaw 300 can be driven to open and close by the clamping driving part 6. The clamping driving part 6 is installed on the lower clamping jaw 302, and the telescopic end of the clamping driving part 6 penetrates through the lower clamping jaw 302 and is connected with the upper clamping jaw 301. A guide column 8 is connected with the lower clamping jaw 302 through a guide shaft sleeve 7, and one end of the guide column 8 penetrates through the guide shaft sleeve 7 and is connected with the upper clamping jaw 301.

[0043] The pressing block 10 can be driven by the pressing air cylinder 9 to press against the upper surface of the battery cell, so as to prevent the displacement and loosening of the battery cell and improve the stability and reliability of the bending.

[0044] One end of the rotating shaft 5 penetrates through the stand plate 4 and is connected with a bending driving part 400 for driving the rotating shaft 5 to rotate, so that the rotating shaft 5 can drive the bending clamping jaw 300 to rotate and bend. The bending driving part 400 includes a driving motor 401, a driving wheel 402, a driven wheel 403 and a belt 404. The driving motor 401 is connected with the stand plate 4 through a motor plate 405. The telescopic end of the driving motor 401 is coaxially connected with the driving wheel 402. One end of the rotating shaft 5 penetrates through the stand plate 4 and is coaxially connected with the driven wheel 403. One end of the belt 404 penetrates through the driving wheel 402 and the driven wheel 403 in sequence and is connected with the other end of the belt 404 to form a closed loop.

[0045] The rotation of the driving motor 401 drives the rotation of the driving wheel 402, which drives the driven wheel 403 to rotate synchronously through the belt 404, so that the driven wheel 403 can drive the rotating shaft 5 to rotate, and the bending clamp jaw 300 connected to the end of the rotating shaft 5 can rotate and bend. The rotation of the driving motor 401 drives the bending clamp jaw 300 to clamp the tab and bend it at multiple angles through the rotating shaft 5. The two bending clamp jaws 300 are arranged to clamp the positive and negative tabs of the battery cell respectively, so that the two tabs of the battery can be bent and controlled separately, which can improve the convenient control of the tab bending and enhance the effect of the tab bending.

[0046] The clamping driving member 6 is a clamping cylinder, which can drive the upper clamp jaw 301 to move up and down relative to the lower clamp jaw 302, so that the upper clamp jaw 301 and the lower clamp jaw 302 can clamp the tab. The standing plate 4 is provided with a pressing cylinder 9 through a connecting plate 13, and the extension end of the pressing cylinder 9 extends to the clamping end of the bending clamp jaw 300 and is connected with a pressing block 10.

[0047] The support plate 3 is provided with a supporting cylinder 11, and the extension end of the supporting cylinder 11 extends to the clamping end of the bending clamp jaw 300 and is connected with a supporting block 12. The supporting cylinder 11 can drive the supporting block 12 to support the lower surface of the battery cell, further prevent the displacement and loosening phenomenon of the battery cell under pressure, and improve the stability and reliability of the tab bending.

[0048] Specifically, in the present embodiment, the bending driving member 400 is provided with two groups, and each group is connected with a bending clamp jaw 300. The two bending clamp jaws 300 are symmetrically installed on the inner side of the two standing plates 4 through the rotating shaft 5.

[0049] The specific action principle of the present embodiment is as follows:

[0050] The tab bending mechanism is installed on the corresponding tab bending station, the clamping end of the bending clamp 300 extends to the battery cell clamp, the support plate 3 can be adjusted in lifting and transverse movement through the driving of the lifting cylinder 101 and the moving cylinder 203, the bending clamp 300 is moved to be matched with the tab of the battery cell clamp, the lower surface of the battery cell is pressed and supported by the support block 12 driven by the support cylinder 11, and the upper surface of the battery cell is pressed by the pressing block 10 driven by the pressing cylinder 9, so that the battery cell is stably clamped, thereby facilitating the subsequent bending of the tab of the battery cell, improving the stability and reliability of the tab bending of the battery cell, enhancing the effect of the tab bending, and through the setting of the clamping cylinder, the upper clamp 301 can be driven to open and close relative to the lower clamp 302, so that the tab of the battery cell after the glue is clamped, the driving shaft of the driving motor 401 drives the driving wheel 402, the transmission shaft 5 connected with the driven wheel 403 is driven by the belt 404 to rotate, so that the transmission shaft 5 can drive the tab clamped by the bending clamp 300 to rotate and bend, the tab bending forms the required shape and position requirement, and the production efficiency and effect of the tab bending are improved.

[0051] The clamping cylinder can drive the bending clamp 300 to open and close clamping, so that the bending clamp 300 can firmly clamp the tab, prevent the tab from sliding or falling off during the bending process, and at the same time, the driving motor 401 is driven to drive the bending clamp 300 on the transmission shaft 5 to stably and flexibly rotate, ensure the stability and consistency of the tab during the bending process, and enhance the convenient control of the tab clamping and bending.

[0052] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application is disclosed as above, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications within the scope of the technical scheme of the present application without departing from the technical scheme of the present application, and any simple modification, equivalent change and modification of the above embodiment within the scope of the technical scheme of the present application are all within the scope of the technical scheme of the present application.

Claims

1. A tab folding mechanism comprising a base plate, characterized by: The bottom plate is connected with a liftable top plate through a jacking assembly, the top plate is connected with a support plate through a sliding assembly, the support plate can move along the extension direction of the sliding assembly, two vertical installed vertical plates are arranged on the support plate, the inner sides of the two adjacent vertical plates are connected with rotatable bending clamps through rotating shafts, the bending clamps are driven by clamping driving elements to open and close the clamping ends of the bending clamps, and one end of the rotating shafts penetrates through the vertical plates and is connected with bending driving elements for driving the rotating shafts to rotate.

2. The tab folding mechanism according to claim 1, wherein: The jacking assembly comprises a jacking cylinder, a jacking shaft and a connecting shaft sleeve, the jacking cylinder is installed on the bottom plate, the telescopic end of the jacking cylinder penetrates through the bottom plate and is connected with the top plate, the connecting shaft sleeve is installed on the bottom plate, the jacking shaft is coaxially and oppositely installed with the connecting shaft sleeve, and one end of the jacking shaft penetrates through the connecting shaft sleeve and is connected with the top plate.

3. The tab folding mechanism of claim 1, wherein: The sliding assembly comprises a sliding rail installed on the top plate, a sliding block oppositely installed on the sliding rail and a moving cylinder, the support plate is installed on the sliding block and can slide along the sliding rail through the sliding block, and the moving cylinder is installed on the top plate and the telescopic end of the moving cylinder is connected with the support plate.

4. The tab folding mechanism of claim 1, wherein: The bending driving element comprises a driving motor, a driving wheel, a driven wheel and a belt, the driving motor is connected with the vertical plate through a motor plate, the telescopic end of the driving motor is coaxially connected with the driving wheel, one end of the rotating shaft penetrates through the vertical plate and is coaxially connected with the driven wheel, and one end of the belt penetrates through the driving wheel and the driven wheel in sequence and is connected with the other end of the belt to form a closed loop.

5. The tab folding mechanism according to any one of claims 1 to 4, characterized in that: The bending clamp is composed of an upper clamp and a lower clamp, the lower clamp is connected with the end of the rotating shaft through a connecting part, the upper clamp and the lower clamp are arranged in an upper / lower opposite mode, the telescopic end of the clamping driving element is connected with the upper clamp and can drive the upper clamp to open and close relative to the lower clamp.

6. The tab folding mechanism of claim 5, wherein: The clamping driving element is installed on the lower clamp, and the telescopic end of the clamping driving element penetrates through the lower clamp and is connected with the upper clamp, a guide column is connected with the lower clamp through a guide shaft sleeve, and one end of the guide column penetrates through the guide shaft sleeve and is connected with the upper clamp.

7. The tab folding mechanism of claim 6, wherein: A pressing cylinder is installed on the vertical plate through a connecting plate, the telescopic end of the pressing cylinder extends to the clamping end of the bending clamp and is connected with a pressing block.

8. The tab folding mechanism of claim 7, wherein: A support cylinder is arranged on the support plate, the telescopic end of the support cylinder extends to the clamping end of the bending clamp and is connected with a support block.

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