Embossing roller

Abstract

The utility model provides an embossing roller. The embossing roller comprises a fixed end, an embossing roller cylinder, circular reinforcing ribs, strip-shaped reinforcing ribs, mounting holes and an internal air bag, the two ends of the knurling roller extend to be provided with fixing ends, a set number of strip-shaped reinforcing ribs and round reinforcing ribs are distributed on the periphery of the knurling roller, and the internal air bag is located in the knurling roller. The mounting holes are uniformly formed in the periphery of the fixed end, the fixed end is annular, the knurling roller is annular, and the circular reinforcing ribs and the strip-shaped reinforcing ribs are distributed on the periphery of the knurling roller at set intervals; the internal air bag is externally connected with an air source, the size of the internal air bag is adjusted by adjusting the air pressure, the extending height of the strip-shaped reinforcing ribs is adjusted, and then the embossing shape is selected when the roller rotates. According to the utility model, the strip-shaped reinforcing ribs are combined on the basis of the traditional circular reinforcing ribs, so that the remodeling of the knurling rollers in two shapes is avoided, the cost of spare parts is reduced, the remodeling time is shortened, and the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of lithium battery production, and in particular relates to an embossing roller. Background Art

[0002] With the development of lithium batteries, batteries are being used in more and more occasions, which puts higher and higher requirements on battery production technology. The tabs are essential components of batteries. The tabs are cut on the side of the pole piece by laser cutting and are wound into a core along with the pole piece. Due to the characteristics of the geometry and material of the tabs, non-uniform shear force will be generated on the surface of the tabs during the winding process. Under slight disturbances, wrinkles and bends may occur, thus affecting the charging and discharging of the core and even the overall performance. Therefore, improving the bending stiffness of the tabs is of great significance to the production efficiency and yield rate of wound batteries.

[0003] The embossing roller is one of the important structures to improve the bending stiffness of the tab. However, the current embossing roller is a conventional equidistant strip embossing or dot embossing. One embossing roller has only one embossing shape, and the embossing spacing is fixed. If you want the tab to have two embossing shapes at the same time, you must install two embossing rollers for secondary embossing. If you want to get embossing with different spacing, you must replace the roller with another specification, which is costly and time-consuming. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to provide an embossing roller, which combines the structure of strip reinforcement ribs on the basis of traditional circular reinforcement ribs, adjusts the size of the internal air bag by adjusting the air pressure and then adjusts the protruding height of the strip reinforcement ribs, so as to obtain the embossing shape when the roller rotates, avoids the change of embossing rollers of two shapes, reduces the spare parts cost, shortens the changeover time, and improves efficiency.

[0005] The utility model adopts the following technical solutions to solve the above technical problems:

[0006] The utility model provides an embossing roller, comprising:

[0007] Fixed end, embossing roller, circular reinforcement ribs, strip reinforcement ribs, mounting holes and internal airbag.

[0008] Fixed ends are extended from both ends of the embossing roller, and a set number of strip reinforcement ribs and a set number of circular reinforcement ribs are distributed on the periphery of the embossing roller; the internal air bag is located inside the embossing roller.

[0009] The fixed end and the mounting hole are used to fix the lithium battery tab embossing roller to the equipment shaft.

[0010] Furthermore, the fixed end is annular, and a plurality of mounting holes are evenly arranged along the outer circumference of the fixed end.

[0011] Furthermore, the embossing roller is ring-shaped.

[0012] Furthermore, the circular reinforcement ribs and the strip reinforcement ribs are distributed on the outer circumference of the embossing roller at a set interval.

[0013] Furthermore, the internal airbag is connected to an external air source, which can adjust the air pressure to expand or contract the airbag, thereby adjusting the extension height of the strip reinforcement rib.

[0014] Furthermore, when the air pressure of the internal airbag is low, the height of the circular reinforcement rib is higher than the height of the strip reinforcement rib, and the embossing shape of the tab is circular embossing.

[0015] When the air pressure in the internal airbag is moderate, the height of the circular embossed reinforcement ribs is kept consistent with the height of the strip embossed reinforcement ribs. At this time, the tab has both circular embossing and strip embossing.

[0016] When the air pressure of the internal airbag is relatively high, the height of the circular embossed reinforcement rib is lower than the height of the strip embossed reinforcement rib, and the embossed shape of the tab is strip embossing with small spacing.

[0017] The air pressure in the internal airbag continues to increase, which increases the height of the strip embossing reinforcement ribs and increases the stripe spacing of the tab strip embossing.

[0018] The utility model adopts the above technical solution, and compared with the prior art, its significant technical effects are as follows:

[0019] 1. The utility model has a reasonable structure and ingenious design. It combines strip reinforcement ribs on the basis of traditional circular reinforcement ribs, so that one roller has two embossing shapes. When switching the embossing shape, there is no need to replace the embossing roller, which reduces the changeover time and improves efficiency.

[0020] 2. The embossing roller of the utility model is provided with an internal air bag, and the internal air bag is expanded or contracted by adjusting the air pressure, thereby adjusting the extension height of the strip reinforcement ribs, thereby realizing the adjustment of four embossing forms. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a left view of the lithium battery tab embossing roller of the utility model.

[0022] Figure 2 It is a front view of the lithium battery tab embossing roller of the utility model.

[0023] Figure 3 It is a cross-sectional view of the lithium battery tab embossing roller of the utility model.

[0024] Figure 4 It is an axial view of the lithium battery tab embossing roller of the utility model.

[0025] Figure 5It is a rendering of the effect of the tab embossing in Example 1 of the utility model.

[0026] Figure 6 This is a rendering of the effect of the tab embossing in Example 2 of the utility model.

[0027] Figure 7 This is a rendering of the effect of the tab embossing in Example 3 of the utility model.

[0028] Figure 8 It is a rendering of the effect of the tab embossing in Example 4 of the utility model. DETAILED DESCRIPTION

[0029] In order to enable technicians to better understand the method of the utility model, the technical solution in the embodiment of the utility model will be described in detail below in conjunction with the drawings in the example of the utility model.

[0030] To achieve the above object, the utility model provides an embossing roller, such as Figure 1 , 2 , 3 and 4, including:

[0031] Fixed end 1, embossing roller 2, circular reinforcement rib 3, strip reinforcement rib 4, mounting hole 5 and internal air bag 6.

[0032] Fixed ends 1 are extended from both ends of the embossing roller 2, and 35 rows of strip reinforcement ribs 4 and 35 rows of evenly arranged circular reinforcement ribs 3 are distributed on the periphery of the embossing roller 2, and the height of the circular reinforcement ribs 3 is 1.5 mm; the internal airbag 6 is located inside the embossing roller 2, and the internal airbag 6 is connected to an external air source, which can adjust the air pressure to expand or contract the airbag, thereby adjusting the protruding height of the strip reinforcement ribs 4.

[0033] The fixed end 1 is annular, and a plurality of mounting holes 5 are evenly arranged along the outer periphery of the fixed end 1. The fixed end 1 and the mounting holes 5 are used to fix the lithium battery tab embossing roller to the equipment shaft. The embossing roller 2 is annular, with a diameter of 50 mm. The circular reinforcement ribs 3 and the strip reinforcement ribs 4 are arranged in sequence and evenly distributed on the outer periphery of the embossing roller 2.

[0034] Embodiment 1:

[0035] like Figure 5 As shown, during the operation of the pole tab embossing roller, the embossing roller 2 is installed on the embossing mechanism of the laser cutting machine through the fixed end 1, and the internal airbag 6 is connected to an external air source. When the air pressure is within the range of 0-5Kpa, the internal airbag 6 expands slightly, and the strip reinforcement rib 4 does not extend. At this time, the height of the circular reinforcement rib 3 is higher than the height of the strip reinforcement rib 4, and the embossing roller 2 rotates with the operation of the pole piece. The circular reinforcement rib 3 on the periphery of the embossing roller 2 is in direct contact with the pole tab, and the circular reinforcement rib 3 applies evenly distributed circular indentations to the pole tab, so that a circular embossing with a spacing of 3mm is formed on the surface of the pole tab.

[0036] Embodiment 2:

[0037] like Figure 6 As shown, during the operation of the pole lug embossing roller, the air pressure increases to 5Kpa, the internal airbag 6 expands, and the strip reinforcement rib 4 extends out with a height of 1.5mm. At this time, the height of the circular reinforcement rib 3 is equal to the height of the strip reinforcement rib 4, and the embossing roller 2 rotates with the operation of the pole piece; the circular reinforcement ribs 3 and the strip reinforcement ribs 4 on the periphery of the embossing roller 2 are in contact with the pole lug at the same time, and the circular reinforcement ribs 3 and the strip reinforcement ribs 4 apply evenly distributed circular and strip indentations to the pole lug, so that circular embossing and strip embossing with a spacing of 1.5mm are formed on the surface of the pole lug.

[0038] Embodiment 3:

[0039] like Figure 7 As shown, during the operation of the tab embossing roller, when the air pressure is within the range of 5-10Kpa, the internal airbag 6 expands greatly, the strip reinforcement ribs 4 extend out, and the height is 1.5-3mm. At this time, the height of the circular reinforcement ribs 3 is lower than the height of the strip reinforcement ribs 4, and the embossing roller 2 rotates with the operation of the pole piece. The strip reinforcement ribs 4 on the periphery of the embossing roller 2 are in direct contact with the tab, and the strip reinforcement ribs 4 apply uniformly distributed strip indentations to the tab, so that the surface of the tab forms strip embossing with a spacing of 3-4.5mm.

[0040] Embodiment 4:

[0041] like Figure 8 As shown, during the operation of the tab embossing roller, when the air pressure is within the range of 10-20Kpa, the internal airbag 6 expands continuously, the strip reinforcement ribs 4 continue to extend and their height continues to increase, ranging from 3-5mm, the top spacing of the strip reinforcement ribs 4 continues to increase, and the embossing roller 2 rotates with the operation of the pole piece. The strip reinforcement ribs 4 on the periphery of the embossing roller 2 are in direct contact with the tab, and the strip reinforcement ribs 4 apply uniformly distributed strip indentations to the tab, so that strip embossing with a spacing of 4.5-6mm is formed on the surface of the tab.

[0042] Therefore, when the air pressure is in the range of 5-20 kPa, as the air pressure increases, the height of the strip reinforcement ribs 4 increases, ranging from 1.5 to 5 mm, and the higher the extension, the larger the strip spacing. The utility model controls the air pressure to obtain embossing with different strip spacings, and increases the internal stress of the tab, thereby increasing the overall bending stiffness of the tab.

[0043] The above embodiments are only for illustrating the technical idea of ​​the present utility model, and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An embossing roller, characterized in that: include: An embossing roller (2), a circular reinforcing rib (3) and a strip reinforcing rib (4); A set number of strip-shaped reinforcement ribs (4) and circular reinforcement ribs (3) are distributed on the outer periphery of the embossing roller (2).

2. The embossing roller according to claim 1, characterized in that: It also includes mounting holes (5); fixed ends (1) are extended from both ends of the embossing roller (2); the fixed ends (1) and the mounting holes (5) are used to fix the lithium battery tab embossing roller to the equipment shaft; the mounting holes (5) are evenly arranged on the outer periphery of the fixed end (1); and the fixed end (1) is annular.

3. The embossing roller according to claim 1, characterized in that: It also comprises an internal air bag (6), which is located inside the embossing roller (2).

4. The embossing roller according to claim 1, characterized in that: The embossing roller (2) is ring-shaped.

5. The embossing roller according to claim 1, characterized in that: The circular reinforcing ribs (3) and the strip reinforcing ribs (4) are distributed on the outer circumference of the embossing roller (2) at a set interval.

6. The embossing roller according to claim 1, characterized in that: The internal air bag (6) is connected to an external air source.

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