A trimming mechanism and film production line

Abstract

The utility model discloses a trimming mechanism and a film production line, comprising: a pressing roller assembly, the pressing roller assembly is used to press a film; a trimming assembly, the trimming assembly comprises a first roller, a second roller and a cutting line, one end of the cutting line is connected to the first roller, the other end is connected to the second roller, and the cutting line is tangent to the outer surface of the pressing roller assembly. The technical solution provided by the application can meet the requirement of cutting off the film without damaging the pressing roller assembly, thereby improving the production quality of the film.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a trimming mechanism and a film production line. Background Art

[0002] During the production process of the diaphragm, the powder is quantitatively fed through the silo and falls into the drop zone between the two rollers. The pressing rollers rotate to squeeze the powder into a film. The edge of the diaphragm is irregular, so it is necessary to cut off the edge of the diaphragm.

[0003] In the prior art, a circular knife or a fixed knife is usually used to cut off the edge of the diaphragm. When the cutter cuts the diaphragm on the roller surface, the cutter usually contacts the pressure roller. The contact between the cutter and the pressure roller will damage both the surface of the pressure roller and the cutter. A damaged pressure roller is not conducive to the pressure roller pressing the diaphragm. A damaged cutter needs to be replaced frequently, which will reduce the production quality of the diaphragm as well as the production efficiency of the diaphragm. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a trimming mechanism and a film production line.

[0005] According to a first aspect of an embodiment of the present application, there is provided a trimming mechanism, comprising:

[0006] A pressing roller assembly, wherein the pressing roller assembly is used for pressing the membrane;

[0007] The trimming assembly comprises a first roller, a second roller and a cutting line, one end of the cutting line is connected to the first roller, and the other end is connected to the second roller, and the cutting line is tangent to the outer surface of the pressure roller assembly.

[0008] Optionally, the cutting wire is respectively wound and connected with the first roller and the second roller;

[0009] The first roller can rotate around its own axis and release the cutting line, and the second roller can rotate around its own axis and tighten the cutting line; or

[0010] The second roller can rotate around its own axis and release the cutting wire, and the first roller can rotate around its own axis and tighten the cutting wire.

[0011] Optionally, the pressing roller assembly comprises a first pressing roller; in a first direction, the first roller and the second roller are respectively arranged on both sides of the first pressing roller;

[0012] The trimming assembly also includes a support roller group;

[0013] In the first direction, the supporting roller assembly is arranged between the first roller and the second roller;

[0014] In the second direction, the upper surface of the support roller subgroup is flush with the lower surface of the pressing roller assembly, and the cutting line bypasses the support roller subgroup and is tangent to the lower surface of the first pressing roller;

[0015] The first direction and the second direction intersect.

[0016] Optionally, the supporting roller subgroup includes a first supporting roller, and the cutting line bypasses the first supporting roller and is tangent to a lower surface of the first roller.

[0017] Optionally, the support roller subgroup includes a first support roller and a second support roller, the first support roller and the second support roller are spaced apart, the spacing between the first support roller and the second support roller is greater than the diameter of the first pressure roller, and the cutting line bypasses the first support roller and the first support roller is tangent to the lower surface of the first pressure roller.

[0018] Optionally, the diameter of the first supporting roller is smaller than the diameter of the first pressing roller, and the diameter of the second supporting roller is smaller than the diameter of the first pressing roller;

[0019] The diameter of the first roller is equal to the diameter of the second roller;

[0020] The diameter of the first supporting roller is smaller than the diameter of the first roller, and the diameter of the second supporting roller is smaller than the diameter of the first roller.

[0021] Optionally, the pressing roller assembly comprises a first pressing roller and a second pressing roller, wherein the first pressing roller and the second pressing roller are spaced apart along a first direction and form a gap;

[0022] The first roller and the second roller are respectively arranged on both sides of the first pressing roller and the second pressing roller along the second direction, and the cutting line passes through the gap between the first pressing roller and the second pressing roller;

[0023] The first direction intersects the second direction.

[0024] Optionally, the cutting line is made of flexible material.

[0025] Optionally, the trimming mechanism comprises two trimming components, and the two trimming components are arranged at intervals along the third direction;

[0026] The first direction, the second direction and the third direction intersect each other.

[0027] According to a second aspect of an embodiment of the present application, a film production line is provided, comprising the above-mentioned trimming mechanism.

[0028] One technical effect of the embodiment of the present application is that the use of a cutting line method can cut off the membrane without damaging the pressure roller assembly, thereby improving the production quality of the membrane.

[0029] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0031] Figure 1 It is a structural schematic diagram of the trimming mechanism in the embodiment of the present application;

[0032] Figure 2 It is a structural schematic diagram of the trimming mechanism in the embodiment of the present application;

[0033] Figure 3 It is a structural schematic diagram of the trimming mechanism in the embodiment of the present application.

[0034] Explanation of the reference numerals: pressure roller assembly 1; first pressure roller 11; second pressure roller 12; trimming assembly 2; first roller 21; second roller 22; cutting line 23; support roller group 24; first support roller 241; second support roller 242; support seat 243. DETAILED DESCRIPTION

[0035] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0037] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0038] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0039] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0040] According to the first aspect of an embodiment of the present application, a trimming mechanism is provided, comprising a pressure roller assembly 1 and a trimming assembly 2, wherein the pressure roller assembly 1 is used to press a membrane; the trimming assembly 2 comprises a first roller 21, a second roller 22 and a cutting line 23, wherein one end of the cutting line 23 is connected to the first roller 21, and the other end is connected to the second roller 22, and the cutting line 23 is tangent to the outer surface of the pressure roller assembly 1.

[0041] The present application provides a cutting mechanism for cutting the edge of a membrane.

[0042] like Figure 1-Figure 3 As shown, the trimming mechanism includes a pressure roller assembly 1 and a trimming assembly 2.

[0043] The pressing roller assembly 1 is used to press the membrane, and the powder falls on the pressing roller assembly 1. The pressing roller assembly 1 rotates to squeeze the powder into a membrane, thereby forming a membrane.

[0044] The trimming assembly 2 includes a first roller 21, a second roller 22 and a cutting line 23. One end of the cutting line 23 is connected to the first roller 21, the other end of the cutting line 23 is connected to the second roller 22, and the cutting line 23 is tangent to the outer surface of the pressing roller assembly 1. When the pressing roller assembly 1 rotates, the film will contact the cutting line 23, and the cutting line 23 will cut off the edge of the film.

[0045] The trimming mechanism provided in the present application adopts the cutting line 23 to cut the membrane without damaging the pressure roller assembly 1, thereby improving the production quality of the membrane.

[0046] Among them, the first roller 21 is arranged on one side of the pressure roller assembly 1, and the second roller 22 is arranged on the other side of the pressure roller assembly 1; in one embodiment, the first roller 21 and the second roller 22 are respectively arranged on both sides of the pressure roller assembly 1 in the first direction; in another embodiment, the first roller 21 and the second roller 22 are respectively arranged on both sides of the pressure roller assembly 1 in the second direction.

[0047] In an optional embodiment, the cutting line 23 is respectively wound and connected with the first roller 21 and the second roller 22; the first roller 21 can rotate around its own axis and release the cutting line 23, and the second roller 22 can rotate around its own axis and tighten the cutting line 23; or the second roller 22 can rotate around its own axis and release the cutting line 23, and the first roller 21 can rotate around its own axis and tighten the cutting line 23.

[0048] like Figure 1As shown, one end of the cutting line 23 is wound and connected to the first roller 21, and the other end of the cutting line 23 is wound and connected to the second roller 22. Since the cutting line 23 is long, the cutting line 23 will be wound on the first roller 21 and / or the second roller 22.

[0049] The first roller 21 can rotate around its own axis, and the second roller 22 can rotate around its own axis. The first roller 21 and the second roller 22 rotate in the same direction.

[0050] In a specific embodiment, the cutting line 23 is wound on the first roller 21, and the other end of the cutting line 23 is connected to the second roller 22. The first roller 21 rotates around its own axis to release the cutting line 23 wound on the first roller 21, and the second roller 22 rotates around its own axis to tighten the cutting line 23 released by the first roller 21, so that the cutting line 23 can cut the membrane at different positions; if the same position of the cutting line 23 cuts the membrane multiple times, the cutting line 23 may break. If the cutting line 23 cuts the membrane at different positions, the risk of the cutting line 23 breaking can be reduced, thereby improving the production efficiency of the membrane.

[0051] It is further explained that the cutting line 23 moves along a preset direction, and the preset direction may be the same as the direction of movement of the diaphragm, thereby reducing the friction between the cutting line 23 and the outer surface of the pressure roller assembly 1 to reduce the risk of the cutting line 23 breaking.

[0052] In another specific embodiment, after the cutting line 23 on the first roller 21 is released, the second roller 22 will rotate around its own axis to release the cutting line 23 wound on the second roller 22, and the first roller 21 will rotate around its own axis to tighten the cutting line 23 released by the second roller 22; on the one hand, it can ensure the production rhythm, and on the other hand, it can also improve the utilization rate of the cutting line 23 and reduce costs.

[0053] In an optional embodiment, the pressure roller assembly 1 includes a first pressure roller 11; in a first direction, the first roller 21 and the second roller 22 are respectively arranged on both sides of the first pressure roller 11; the trimming assembly 2 also includes a supporting roller group 24; in the first direction, the supporting roller group 24 is arranged between the first roller 21 and the second roller 22; in the second direction, the upper surface of the supporting roller group 24 is flush with the lower surface of the pressure roller assembly 1, and the cutting line 23 bypasses the supporting roller group 24 and is tangent to the lower surface of the first pressure roller 11; the first direction and the second direction intersect.

[0054] For the first and second directions, please refer to Figure 1 , Figure 2 and Figure 3 The direction marked.

[0055] like Figure 1 As shown, the roller assembly 1 includes a first roller 11. In a first direction, a first roller 21 and a second roller 22 are respectively arranged on both sides of the first roller 11. In other words, the first roller 21 and the second roller 22 are arranged on both sides of the first roller 11 along the first direction. When the cutting line 23 is connected to the first roller 21 and the second roller 22, the cutting line 23 can cut off the edge portion of the film on the first roller 11.

[0056] Further explanation, since the first pressure roller 11 is rotating, the film will continuously pass through the first pressure roller 11, so it is only necessary to set the first roller 21 and the second roller 22 on both sides of the first pressure roller 11 to cut off the edge of the film. Therefore, setting the first roller 21 and the second roller 22 on both sides of the first pressure roller 11 can save the space occupied by the trimming assembly 2.

[0057] like Figure 1 As shown, in the first direction, the support roller group 24 is arranged between the first roller 21 and the second roller 22; in the second direction, the support roller group 24 is located between the first pressing roller 11 and the first roller 21. One end of the cutting line 23 is connected to the first roller 21, and the other end of the cutting line 23 is connected to the second roller 22. The support roller group 24 is located between the first roller 21 and the second roller 22. The support roller group 24 can play a role in supporting the cutting line 23, so as to support the cutting line 23 to approach the first pressing roller 11 in the second direction and be tangent to the outer surface of the first pressing roller 11, thereby improving the cutting quality of the film.

[0058] In an optional implementation, the support roller group 24 includes a first support roller 241 , and the cutting line 23 bypasses the first support roller 241 and abuts against the first pressing roller 11 .

[0059] In such Figure 1 In the illustrated embodiment, the support roller group 24 includes a first support roller 241 and a support seat 243. The first support roller 241 is rotatably connected to the support seat 243, and the first support roller 241 can rotate around its own axis.

[0060] In the first direction, the first support roller 241 is arranged between the first roller 21 and the second roller 22; in the second direction, the first roller 21 and the second roller 22 are located on the same horizontal line, and the first support roller 241 is located between the first pressure roller 11 and the first roller 21. The cutting line 23 will bypass the first support roller 241, and the first support roller 241 will play a role in supporting the cutting line 23, so that the cutting line 23 is tangent to the outer surface of the first pressure roller 11.

[0061] In another optional embodiment, the support roller subgroup 24 includes a first support roller 241 and a second support roller 242, the first support roller 241 and the second support roller 242 are arranged at an interval, the interval between the first support roller 241 and the second support roller 242 is greater than the diameter of the first pressure roller 11, and the cutting line 23 bypasses the first support roller 241 and the second support roller 242 and is tangent to the lower surface of the first pressure roller 11.

[0062] In such Figure 2 In the illustrated embodiment, the support roller subgroup 24 includes a first support roller 241, a second support roller 242 and a support seat 243, the support seat 243 includes a first support rod and a second support rod, the first support roller 241 is rotatably connected to the first support rod, the second support roller 242 can rotate around its own axis, the second support roller 242 is rotatably connected to the second support rod, and the second support roller 242 can move around its own axis; the rotation direction of the first support roller 241 and the second support roller 242 can be the same. In the first direction, the first support roller 241 and the second support roller 242 are spaced apart, and the spacing between the first support roller 241 and the second support roller 242 is greater than the diameter of the first pressure roller 11. In other words, in the first direction, the first support roller 241 and the second support roller 242 are located on both sides of the first pressure roller 11.

[0063] To further explain, the cutting line 23 is wound around the first support roller 241 and the second support roller 242 , and the first support roller 241 and the second support roller 242 play a role in supporting the cutting line 23 , so that the cutting line 23 abuts against the first pressing roller 11 .

[0064] In an optional embodiment, the diameter of the first support roller 241 is smaller than the diameter of the first pressure roller 11, and the diameter of the second support roller 242 is smaller than the diameter of the first pressure roller 11; the diameter of the first roller 21 is equal to the diameter of the second roller 22; the diameter of the first support roller 241 is smaller than the diameter of the first roller 21, and the diameter of the second support roller 242 is smaller than the diameter of the first roller 21.

[0065] The diameter of the first roller 21 is equal to the diameter of the second roller 22 , so that the first roller 21 and the second roller 22 can easily retract and unwind the cutting wire 23 .

[0066] like Figure 2 As shown, the diameter of the first support roller 241 is smaller than the diameter of the first pressure roller 11, and the diameter of the second support roller 242 is smaller than the diameter of the first pressure roller 11; the diameter of the first support roller 241 is smaller than the diameter of the first roller 21, and the diameter of the second support roller 242 is smaller than the diameter of the first roller 21.

[0067] Further explanation, the first roller 21 and the second roller 22 have the function of reeling in and unreeling the cutting line 23. The diameter of the first roller 21 is larger than the diameter of the first support roller 241, and the diameter of the second roller 22 is larger than the diameter of the second support roller 242, so that the cutting line 23 can be reeled in and unreeled quickly. The diameter of the first support roller 241 is smaller than the diameter of the first pressing roller 11, and the diameter of the second support roller 242 is smaller than the diameter of the first pressing roller 11, so that the first support roller 241 and the second support roller 242 are conveniently arranged between the first roller 21 and the second roller 22 in the first direction, and between the first pressing roller 11 and the first roller 21 and the second roller 22 in the second direction. This can save the installation space of the trimming assembly 2, and facilitate the first support roller 241 and the second support roller 242 to support the cutting line 23 to be tangent to the lower surface of the first pressing roller 11.

[0068] In an optional embodiment, the pressure roller assembly 1 includes a first pressure roller 11 and a second pressure roller 12, and the first pressure roller 11 and the second pressure roller 12 are spaced apart along a first direction to form a gap; the first roller 21 and the second roller 22 are respectively arranged on both sides of the first pressure roller 11 and the second pressure roller 12 along the second direction, and the cutting line 23 passes through the gap between the first pressure roller 11 and the second pressure roller 12; the first direction intersects with the second direction.

[0069] like Figure 3 In the illustrated embodiment, the pressing roller assembly 1 includes a first pressing roller 11 and a second pressing roller 12, which are spaced apart along a first direction to form a gap, and the gap is the same as or similar to the thickness of the pre-pressed film.

[0070] The first roller 21 and the second roller 22 are respectively arranged on both sides of the first pressing roller 11 and the second pressing roller 12 along the second direction. In the second direction, the first roller 21 is located at the upper side of the gap between the first pressing roller 11 and the second pressing roller 12, and the second roller 22 is located at the lower side of the gap between the first pressing roller 11 and the second pressing roller 12. The cutting line 23 passes through the gap between the first pressing roller 11 and the second pressing roller 12 and is connected to the first roller 21 and the second roller 22 respectively.

[0071] When the first pressing roller 11 and the second pressing roller 12 are pressing the film, the film moves from the first pressing roller 11 to the second pressing roller 12 and passes through the gap between the first pressing roller 11 and the second pressing roller 12. The cutting line 23 is located in the gap between the first pressing roller 11 and the second pressing roller 12, and the cutting line 23 can cut off the edge of the film.

[0072] In this embodiment, the trimming assembly 2 has a simple structure and low cost.

[0073] In a preferred embodiment, the cutting line 23 is located in the gap between the first pressing roller 11 and the second pressing roller 12, and the cutting line 23 does not contact the outer surface of the first pressing roller 11 and the outer surface of the second pressing roller 12, thereby reducing the risk of the cutting line 23 breaking.

[0074] In an optional embodiment, the cutting line 23 is made of a flexible material. When the cutting line 23 abuts against the pressing roller assembly 1, the cutting line 23 will not scratch the outer surface of the pressing roller assembly 1, thereby not affecting the production quality of the membrane.

[0075] In an optional embodiment, the trimming mechanism comprises two trimming components 2, and the two trimming components 2 are arranged at intervals along the third direction;

[0076] The first direction, the second direction and the third direction intersect each other.

[0077] For the first, second and third directions, please refer to Figure 1 , Figure 2 and Figure 3 The third direction is the same as the length direction of the pressing roller assembly 1 .

[0078] To further explain, the trimming mechanism includes two trimming components 2. The two trimming components 2 are spaced apart along the third direction. The distance between the two trimming components 2 is the required width of the diaphragm.

[0079] According to a second aspect of an embodiment of the present application, a film production line is provided, comprising the above-mentioned trimming mechanism.

[0080] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A trimming mechanism, characterized in that: include: A pressing roller assembly, wherein the pressing roller assembly is used for pressing the membrane; A trimming assembly, the trimming assembly comprising a first roller, a second roller and a cutting line, one end of the cutting line is connected to the first roller, the other end is connected to the second roller, and the cutting line is tangent to the outer surface of the pressing roller assembly; The cutting wire is respectively wound and connected with the first roller and the second roller; The first roller can rotate around its own axis and release the cutting line, and the second roller can rotate around its own axis and tighten the cutting line; or The second roller can rotate around its own axis and release the cutting line, and the first roller can rotate around its own axis and tighten the cutting line.

2. The trimming mechanism according to claim 1, characterized in that: The pressing roller assembly comprises a first pressing roller; in a first direction, the first roller and the second roller are respectively arranged on both sides of the first pressing roller; The trimming assembly also includes a support roller group; In the first direction, the supporting roller assembly is arranged between the first roller and the second roller; In the second direction, the upper surface of the support roller subgroup is flush with the lower surface of the pressing roller assembly, and the cutting line bypasses the support roller subgroup and is tangent to the lower surface of the first pressing roller; The first direction and the second direction intersect.

3. The trimming mechanism according to claim 2, characterized in that: The supporting roller subgroup includes a first supporting roller, and the cutting line bypasses the first supporting roller and is tangent to a lower surface of the first roller.

4. The trimming mechanism according to claim 2, characterized in that: The support roller subgroup includes a first support roller and a second support roller, the first support roller and the second support roller are arranged at an interval, the interval between the first support roller and the second support roller is greater than the diameter of the first pressure roller, and the cutting line bypasses the first support roller and the first support roller is tangent to the lower surface of the first pressure roller.

5. The trimming mechanism according to claim 4, characterized in that: The diameter of the first supporting roller is smaller than the diameter of the first pressing roller, and the diameter of the second supporting roller is smaller than the diameter of the first pressing roller; The diameter of the first roller is equal to the diameter of the second roller; The diameter of the first supporting roller is smaller than the diameter of the first roller, and the diameter of the second supporting roller is smaller than the diameter of the first roller.

6. The trimming mechanism according to claim 1, characterized in that: The pressing roller assembly comprises a first pressing roller and a second pressing roller, wherein the first pressing roller and the second pressing roller are spaced apart along a first direction and form a gap; The first roller and the second roller are respectively arranged on both sides of the first pressing roller and the second pressing roller along the second direction, and the cutting line passes through the gap between the first pressing roller and the second pressing roller; The first direction intersects the second direction.

7. The trimming mechanism according to claim 1, characterized in that: The cutting line is made of flexible material.

8. The trimming mechanism according to any one of claims 1 to 7, characterized in that: The trimming mechanism comprises two trimming components, and the two trimming components are arranged at intervals along the third direction; The first direction, the second direction and the third direction intersect each other.

9. A film production line, characterized in that: It comprises a trimming mechanism as described in any one of claims 1 to 8.

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