Winding mechanism for slitting offcut

Abstract

The utility model relates to a winding mechanism for rim charge slitting, and belongs to the technical field of diaphragm slitting, the winding mechanism comprises a frame body and a compression roller rotationally connected to the frame body, a rim charge winding drum is arranged on one side of the compression roller, a cross rod is arranged on the frame body, a connecting arm is arranged on the cross rod, a transition pressing wheel is rotationally connected to the connecting arm, and the transition pressing wheel is arranged on the frame body. The axial directions of the transition pressing wheel, the pressing roller and the rim charge winding drum are the same, and the transition pressing wheel is arranged between the pressing roller and the rim charge winding drum. The possibility of indentation or deformation of the compression roller can be reduced, and the service life of the compression roller can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of diaphragm slitting, and in particular to a winding mechanism for slitting edge materials. Background Art

[0002] With the continuous development of science and technology, human beings have a higher demand for energy. As a highly efficient energy storage device that can be repeatedly charged and discharged, lithium batteries have been widely used in new energy vehicles, 3C products, Bluetooth headsets and other fields.

[0003] As an important component of the battery, the diaphragm plays the role of electrolyte isolation and battery protection. At the same time, the quality of the diaphragm has a crucial impact on the processing and performance of lithium batteries. Once the diaphragm has problems such as poor appearance, it will affect the processing accuracy and battery performance of the battery.

[0004] Usually, the production scale of base membrane is very large, and it is difficult to ensure that the membrane surface is free of deformation, edge collapse, etc. Therefore, coating one or more layers of micron-thick powder on the outer layer of the base membrane can not only effectively cover the original base membrane edge collapse and deformation problems; but also improve the diaphragm's liquid retention, thermal stability, and puncture performance, and ultimately reduce battery short circuits, enhance battery cycle life, and prevent battery swelling.

[0005] As one of the most common equipment in the diaphragm industry, the independent arm slitting machine has a unique winding structure that ensures that each workstation will not affect each other, reducing the occurrence of problems such as warping and jagged edges. The pressure roller at the winding position plays a vital role. The pressure roller is divided into various materials such as steel rollers and rubber rollers. The steel roller has low roughness and high hardness. It can achieve a good winding effect under the action of tension. However, the high hardness causes the winding core to continuously hit the steel roller, causing the diaphragm to stretch and produce ribs. In order to improve the disadvantages of steel rollers, the most widely used winding pressure roller in the industry is now a rubber roller. However, when the independent arm slitting machine is winding, the width of the edge material is usually between 0.7mm-2mm, which is much narrower than the normal winding width. Under the same slitting parameters, the actual winding tension and pressure of the edge material are relatively large, which will cause irreversible indentations and deformation on the surface of the contact rubber roller. Utility Model Content

[0006] In order to reduce the possibility of indentation or deformation of the pressure roller and extend the service life of the pressure roller, the present application provides a winding mechanism for cut edge materials.

[0007] The present application provides a winding mechanism for cutting edge materials, which adopts the following technical solution:

[0008] A winding mechanism for slitting edge materials comprises a frame and a pressure roller rotatably connected to the frame, a side of the pressure roller is provided with an edge material winding drum, a cross bar is provided on the frame, a connecting arm is provided on the cross bar, a transition pressure wheel is rotatably connected to the connecting arm, the axial directions of the transition pressure wheel, the pressure roller and the edge material winding drum are the same and the transition pressure wheel is arranged between the pressure roller and the edge material winding drum.

[0009] By adopting the above technical solution, when the edge material is rolled up, the edge material transfers the pressure to the transition pressure wheel under the action of the pressure parameters of the equipment, and does not directly act on the pressure roller. The axial length of the transition pressure wheel can be set to a longer length to ensure that the transition pressure wheel and the pressure roller have a larger pressure contact area, thereby effectively protecting the pressure roller from being crushed, which is beneficial to extending the service life of the pressure roller.

[0010] Optionally, the cross-section of the cross-bar is circular and the length direction of the cross-bar is consistent with the axial direction of the pressure roller, and the connecting arm is provided with a through hole for the cross-bar to pass through.

[0011] By adopting the above technical solution, the cross bar provides a fulcrum for the connecting arm and the transition pressure wheel, reducing the possibility of shaking of the connecting arm and the transition pressure wheel during the slitting process. The connecting arm can swing on the cross bar to adapt to rollers of different diameters, ensuring that the transition pressure wheel can always lightly rest on one side of the pressure roller under the action of its own weight; in addition, when the position of the edge material changes, the connecting arm can also slide along the length direction of the cross bar to adjust the position of the transition pressure wheel, so as to facilitate compatibility with slitting membranes of different widths.

[0012] Optionally, two of the edge material winding drum and transition pressing wheel are provided correspondingly.

[0013] By adopting the above technical solution, on the one hand, the edge materials on both sides can be rolled up at the same time, and on the other hand, it is ensured that the edge materials on both sides are taken over by the transition pressing wheels, further reducing the possibility of indentation or deformation of the pressing roller.

[0014] Optionally, a pressure-resistant protective layer is provided on the outer peripheral surface of the pressure roller.

[0015] By adopting the above technical solution, the surface of the pressure roller can be further protected, the service life of the pressure roller can be significantly improved, and costs can be saved more effectively.

[0016] Optionally, a limiting mechanism for limiting the two sides of the connecting arm is provided on the cross bar.

[0017] By adopting the above technical solution, after the position of the transition pressure wheel is adjusted, the connecting arm is limited by the limiting mechanism to ensure that the position of the transition pressure wheel does not change arbitrarily during the slitting process, causing the transition pressure wheel to lose contact with the edge material, thereby effectively protecting the pressure roller from being crushed by the edge material.

[0018] Optionally, the limiting mechanism includes limiting sleeves arranged on both sides of the connecting arm, the limiting sleeves are sleeved on the cross bar, a locking bolt is threadedly connected to the limiting sleeve, and the tail of the locking bolt abuts against the cross bar.

[0019] By adopting the above technical solution, when the locking bolt is loosened, the tail of the locking bolt is separated from the cross bar, and the limiting sleeve can slide freely on the cross bar, which is convenient for adjusting the position of the connecting arm and the transition pressure wheel; when the position of the transition pressure wheel is adjusted, the locking bolt is tightened so that the tail of the locking bolt is pressed against the outer side of the cross bar, so that the limiting sleeve can be locked, and then the connecting arm can be limited. The structure is simple and the operation is convenient.

[0020] Optionally, the locking bolt is a butterfly bolt.

[0021] By adopting the above technical solution, the tightness of the locking bolt can be adjusted directly by hand-twisting, thereby improving the convenience of operation.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Through the setting of the transition pressing wheel, when the edge material is rolled up, the edge material transfers the pressure to the transition pressing wheel under the action of the equipment pressure parameters, and does not directly act on the pressure roller. The axial length of the transition pressing wheel can be set to a longer length to ensure that the transition pressing wheel and the pressure roller have a larger pressure contact area, thereby effectively protecting the pressure roller from being crushed, which is beneficial to extending the service life of the pressure roller.

[0024] 2. Through the setting of the crossbar and perforations, the crossbar provides a fulcrum for the connecting arm and the transition roller, reducing the possibility of shaking of the connecting arm and the transition roller during the slitting process. The connecting arm can swing on the crossbar to adapt to rollers of different diameters, ensuring that the transition roller can always rest lightly on one side of the roller under the action of its own weight; in addition, when the position of the edge material changes, the connecting arm can also slide along the length direction of the crossbar to adjust the position of the transition roller, so as to facilitate compatibility with slitting membranes of different widths.

[0025] 3. By setting up a pressure-resistant protective layer, the surface of the pressure roller can be further protected, which can significantly increase the service life of the pressure roller and save costs more effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0027] Figure 2 It is a structural schematic diagram that embodies the connection relationship between the connecting arm and the cross bar in the first embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the pressure-resistant protective layer in Example 1 of the present application.

[0029] Figure 4 It is a structural schematic diagram of the limiting mechanism in the second embodiment of the present application.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. frame; 2. pressure roller; 21. pressure-resistant protective layer; 3. edge material winding drum; 4. cross bar; 5. connecting arm; 51. perforation; 6. transition pressure wheel; 7. limiting mechanism; 71. limiting sleeve; 72. locking bolt. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 , further details of this application are given.

[0032] Embodiment 1:

[0033] The first embodiment of the present application discloses a winding mechanism for cutting edge materials. Figure 1 A winding mechanism for slitting edge materials includes a frame 1 and a pressure roller 2 rotatably connected to the frame 1, and a side of the pressure roller 2 is provided with an edge material winding drum 3. When the diaphragm is wound, the pressure roller 2 is a rubber roller to reduce the possibility of stretching of the diaphragm.

[0034] Reference Figure 1 A cross bar 4 is fixed on the frame 1, a connecting arm 5 is installed on the cross bar 4, a transition pressing wheel 6 is rotatably connected to the connecting arm 5, the axial directions of the transition pressing wheel 6, the pressing roller 2 and the edge material winding drum 3 are the same, and the transition pressing wheel 6 is arranged between the pressing roller 2 and the edge material winding drum 3. When the edge material is wound up, the edge material transmits the pressure to the transition pressing wheel 6 under the action of the pressure parameters of the equipment, and does not directly act on the pressing roller 2. The axial length of the transition pressing wheel 6 can be set to a longer length to ensure that the transition pressing wheel 6 and the pressing roller 2 have a larger pressure contact area, thereby effectively protecting the pressing roller 2 from being crushed, which is conducive to extending the service life of the pressing roller 2.

[0035] Reference Figure 1 and Figure 2 The cross-section of the crossbar 4 is circular and the length direction of the crossbar 4 is the same as the axial direction of the pressure roller 2. The upper end of the side wall of the connecting arm 5 is provided with a through hole 51 for the crossbar 4 to pass through. In this way, the crossbar 4 provides a fulcrum for the connecting arm 5 and the transition pressure roller 6, reducing the possibility of shaking of the connecting arm 5 and the transition pressure roller 6 during the slitting process. The connecting arm 5 can swing on the crossbar 4 to adapt to pressure rollers 2 of different diameters, ensuring that the transition pressure roller 6 can always lightly rest on one side of the pressure roller 2 under the action of its own weight; in addition, when the position of the edge material changes, the connecting arm 5 can also slide along the length direction of the crossbar 4 to adjust the position of the transition pressure roller 6, so as to facilitate compatibility with slitting membranes of different widths.

[0036] Reference Figure 1 and Figure 3In order to simultaneously reel up the edge materials on both sides and ensure that the edge materials on both sides are received by the transition roller 6, two edge material reeling drums 3 and transition rollers 6 are provided correspondingly. In order to further protect the surface of the pressure roller 2, a pressure-resistant protective layer 21 is provided on the outer peripheral surface of the pressure roller 2, which can significantly increase the service life of the pressure roller 2 and more effectively save costs. In the first embodiment, the material of the pressure-resistant protective layer 21 is Teflon.

[0037] The implementation principle of the first embodiment of the present application is: when the edge material is rolled up, the edge material transfers the pressure to the transition pressure wheel 6 under the action of the equipment pressure parameters, and does not directly act on the pressure roller 2. The axial length of the transition pressure wheel 6 can be set to a longer length to ensure that the transition pressure wheel 6 and the pressure roller 2 have a larger pressure contact area, thereby effectively protecting the pressure roller 2 from being crushed, which is beneficial to extending the service life of the pressure roller 2.

[0038] The cross bar 4 is provided to provide a fulcrum for the connecting arm 5 and the transition roller 6, thereby reducing the possibility of shaking of the connecting arm 5 and the transition roller 6 during the slitting process. The connecting arm 5 can swing on the cross bar 4 to adapt to rollers 2 of different diameters, ensuring that the transition roller 6 can always rest lightly on one side of the roller 2 under the action of its own weight; in addition, when the position of the edge material changes, the connecting arm 5 can also slide along the length direction of the cross bar 4 to adjust the position of the transition roller 6, thereby facilitating compatibility with slitting membranes of different widths.

[0039] Embodiment 2:

[0040] Embodiment 2 of the present application discloses a winding mechanism for cutting edge materials. Figure 4 The difference between the second embodiment and the first embodiment is that: a limiting mechanism 7 for limiting the two sides of the connecting arm 5 is provided on the cross bar 4. After the position of the transition pressing wheel 6 is adjusted, the connecting arm 5 is limited by the limiting mechanism 7 to ensure that the position of the transition pressing wheel 6 does not change arbitrarily during the slitting process, causing the transition pressing wheel 6 to lose contact with the edge material, thereby effectively protecting the pressing roller 2 from being crushed by the edge material.

[0041] Reference Figure 1 The limiting mechanism 7 includes limiting sleeves 71 arranged on both sides of the connecting arm 5, the limiting sleeves 71 are sleeved on the cross bar 4, and a locking bolt 72 is passed through and threadedly connected on the side wall of the limiting sleeve 71, and the tail of the locking bolt 72 abuts against the outer peripheral surface of the cross bar 4. In this way, when the locking bolt 72 is loosened, the tail of the locking bolt 72 is separated from the cross bar 4, and the limiting sleeve 71 can slide freely on the cross bar 4, which is convenient for adjusting the position of the connecting arm 5 and the transition pressure wheel 6; when the position of the transition pressure wheel 6 is adjusted, the locking bolt 72 is tightened so that the tail of the locking bolt 72 abuts against the outer side of the cross bar 4, so that the limiting sleeve 71 can be locked, thereby realizing the limiting of the connecting arm 5.

[0042] Reference Figure 1 The locking bolt 72 is a butterfly bolt, and the tightness of the locking bolt 72 can be adjusted directly by hand-tightening, thereby improving the convenience of operation.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A winding mechanism for slitting edge material, comprising a frame (1) and a pressure roller (2) rotatably connected to the frame (1), a side of the pressure roller (2) being provided with an edge material winding drum (3), characterized in that: The frame (1) is provided with a cross bar (4), the cross bar (4) is provided with a connecting arm (5), the connecting arm (5) is rotatably connected to a transition pressure wheel (6), the transition pressure wheel (6), the pressure roller (2) and the edge material winding drum (3) have the same axial direction and the transition pressure wheel (6) is arranged between the pressure roller (2) and the edge material winding drum (3).

2. A winding mechanism for cut edge material according to claim 1, characterized in that: The cross-section of the cross-bar (4) is circular and the length direction of the cross-bar (4) is the same as the axial direction of the pressure roller (2). The connecting arm (5) is provided with a through hole (51) for the cross-bar (4) to pass through.

3. The winding mechanism for cutting edge material according to claim 1, characterized in that: The edge material winding drum (3) and the transition pressing wheel (6) are provided in two pieces correspondingly.

4. The winding mechanism for cutting edge material according to claim 1 is characterized in that: A pressure-resistant protective layer (21) is provided on the outer peripheral surface of the pressure roller (2).

5. The winding mechanism for cutting edge material according to claim 1, characterized in that: The crossbar (4) is provided with a limiting mechanism (7) for limiting the two sides of the connecting arm (5).

6. A winding mechanism for cut edge material according to claim 5, characterized in that: The limiting mechanism (7) comprises limiting sleeves (71) arranged on both sides of the connecting arm (5), the limiting sleeves (71) being sleeved on the cross bar (4), a locking bolt (72) being threadedly connected to the limiting sleeve (71), and the tail of the locking bolt (72) abutting against the cross bar (4).

7. A winding mechanism for cut edge material according to claim 6, characterized in that: The locking bolt (72) is a butterfly bolt.

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