A kind of unwinding and rubber pulling device based on isolation film separation

Abstract

The utility model discloses a kind of unwinding and pulling rubber device based on isolation film separation, including peeling mechanism, including unwinding assembly, winding assembly, the peeling guide roller being set between unwinding assembly and winding assembly, peeling guide roller can reciprocate translation to make isolation film material belt form and eliminate flat section;Material receiving mechanism, including the load-bearing seat that can be attached with flat section.This application provides unwinding and pulling rubber device based on isolation film separation by precise mechanical design and multi-mechanism cooperative control, realizes the automation, high-precision peeling of isolation film, can effectively improve the quality of isolation film film layer peeling, improve the production quality of battery.

Description

Technical Field

[0001] This utility model relates to the field of separator membrane separation technology, and in particular to an unwinding and stretching device based on separator membrane separation. Background Technology

[0002] Battery separator rolls typically consist of a separator and a release liner. Therefore, the release liner needs to be peeled off before cutting the separator. However, current peeling methods involve manually separating a portion of the roll, with one end of the release liner being wound up by a winding mechanism. The separator roll is then placed on an unwinding mechanism, which simultaneously outputs the separator and release liner, separating them. However, due to the adhesive force between the separator and release liner, and the separator being subjected to both unwinding and winding forces, wrinkles easily form, affecting battery quality. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an unwinding and stretching device based on separator film separation, which can effectively solve the problem of wrinkles easily appearing in the separator film during the peeling and separation of the separator film and release film, effectively ensuring battery quality and improving product quality.

[0004] An unwinding and stretching device based on separator membrane separation according to an embodiment of the present invention includes:

[0005] The peeling mechanism includes an unwinding assembly, a winding assembly, and a peeling guide roller disposed between the unwinding assembly and the winding assembly. The peeling guide roller is capable of reciprocating translation to form and eliminate flat sections of the release film strip.

[0006] The receiving mechanism includes a support that can fit into the flat section.

[0007] According to an embodiment of the present invention, an unwinding and tape-drawing device based on separator film separation has at least the following beneficial effects: The unwinding and tape-drawing device provided in this application mainly includes a peeling mechanism and a receiving mechanism. Specifically, the peeling mechanism includes an unwinding assembly, a winding assembly, and a peeling guide roller, while the receiving mechanism includes a support seat, wherein the support seat is used to support the flat-laid section (i.e., the separator film strip section waiting to be peeled). For ease of understanding, as... Figure 3 As shown, the direction of movement of the peeling guide roller when it drives the release film strip to the carrier to form a flat section is the first direction F1, while the direction of movement of the peeling guide roller when it cooperates with the winding assembly to peel the release film strip is the second direction F2.

[0008] The working principle of the unwinding and stretching device provided in this application is as follows: First, the user guides the release film of the release film strip to the winding assembly in advance. Then, the unwinding assembly, the winding assembly, and the peeling guide roller are started at the same time. Specifically, the unwinding assembly feeds out a release film strip of a preset length, the winding assembly feeds out a release film of a preset length, and the peeling guide roller moves along the first direction F1 and drives the release film strip to the carrier seat, so that a flat section (i.e., the release film strip section waiting to be peeled) is formed on the carrier seat.

[0009] Meanwhile, it is important to note that when guiding the partially peeled release film to the winding assembly, the user also needs to pre-guide and fix the partially peeled release film of the release film strip segment to the support. The release film on the flat section can also be fixed to the support, with the partially peeled release film of the release film strip segment located at the end furthest from the unwinding assembly. Subsequently, the winding assembly and the peeling guide roller start simultaneously. The peeling guide roller moves along the second direction F2, eliminating the flat section. At the same time, the winding assembly also starts to wind up the peeled release film, and the peeled release film is fixed to the support. After the peeling guide roller has peeled the release film from the flat section, the unwinding assembly, winding assembly, and peeling guide roller repeat the previous operation to peel the release film strip for the next flat section. In other words, it can be understood that the unwinding and peeling device of this application fixes a pre-set section of the separator film strip to be peeled onto a support base. The peeling guide roller peels the separator film from the release film onto the pre-set section of the separator film strip on the support base, and this operation is repeated to complete the separator film strip peeling process, thereby achieving automated peeling and splicing of the separator film and reducing manual intervention. Furthermore, by pre-setting a flat section, the tension fluctuation during the peeling process is reduced, so that when the film layers are peeled apart, the pushing force of the unwinding assembly and the pulling force of the winding assembly will not act on the peeled separator film simultaneously, avoiding wrinkles or breaks in the separator film, effectively improving the flatness of the film layer, and ensuring the quality of the battery.

[0010] According to an embodiment of the present invention, an unwinding and stretching device based on the separation of the release film includes a moving mechanism, which includes a moving drive component. The output end of the moving drive component is connected to a peeling guide roller. The moving drive component can drive the peeling guide roller to reciprocate and move horizontally to form and eliminate flat sections of the release film strip. When the peeling guide roller eliminates the flat sections, the moving speed of the peeling guide roller is the same as the winding speed of the winding assembly.

[0011] According to an embodiment of the present invention, an unwinding and stretching device based on separator film separation includes a moving mechanism that further includes a moving base and a moving frame. A moving drive is fixed on the moving base, and the moving frame is slidably connected to the moving base. A peeling guide roller is mounted on the moving frame, and the output end of the moving drive is connected to the moving frame. The moving drive can drive the moving frame to slide on the moving base to realize the reciprocating translation of the peeling guide roller.

[0012] According to an embodiment of the present invention, an unwinding and stretching device based on the separation of release film includes a moving mechanism that further includes a second clamping component. The second clamping component is mounted on a moving frame and is disposed on the same side as the peeling guide roller. The second clamping component is capable of clamping the release film that has been peeled off from the flat section.

[0013] According to an embodiment of the present invention, a roll-up and tape-pulling device based on the separation of the release film includes a second clamping assembly comprising a second upper clamping plate, a second lower clamping plate, and a third lifting drive member. One of the second upper clamping plate and the second lower clamping plate is connected to the output end of the third lifting drive member, and the other of the second upper clamping plate and the second lower clamping plate is fixed on a movable frame. The third lifting drive member can drive one of the second upper clamping plate and the second lower clamping plate to move closer to or further away from the other in order to clamp the separated release film of the flat bonding section.

[0014] or,

[0015] The second clamping assembly includes a second upper clamping plate, a second lower clamping plate, and two third lifting drive components. The second upper clamping plate and the second lower clamping plate are respectively connected to the output ends of the two third lifting drive components. The two third lifting drive components can respectively drive the second upper clamping plate and the second lower clamping plate to move closer or further away from each other, so as to clamp the separated isolation film of the flat-attached section.

[0016] According to an embodiment of the present utility model, an unwinding and stretching device based on the separation of the release liner is provided on the support seat. The release liner is provided with a negative pressure suction channel, which is connected to an external negative pressure mechanism. The release liner is used to adsorb and fix the release liner of the flat section.

[0017] And / or, the separator is a PI membrane.

[0018] According to an embodiment of the present invention, an unwinding and stretching device based on separation of a separating membrane further includes a fixed frame, a support seat slidably connected to the fixed frame, and the support seat being able to adjust its position along the radial direction of the fixed frame.

[0019] According to an embodiment of the present invention, an unwinding and stretching device based on separation of the separator film is provided with a fixed frame having a first lifting drive component. The output end of the first lifting drive component is connected to the bearing seat, and the first lifting drive component can drive the bearing seat to slide on the fixed frame to achieve position adjustment.

[0020] According to an embodiment of the present invention, an unwinding and stretching device based on the separation of the release liner further includes a roll clamping mechanism. The roll clamping mechanism includes a first clamping component and a second lifting drive component. The second lifting drive component is disposed on a support base. One end of the first clamping component is connected to the output end of the second lifting drive component. The second lifting drive component can drive the first clamping component away from or near the release liner of the flat-attached section, so as to fix or release the release liner of the flat-attached section by the first clamping component.

[0021] According to an embodiment of the present invention, an unwinding and stretching device based on the separation of the release film is provided. The roll clamping mechanism further includes a first pressing member and a fourth lifting drive member. The fourth lifting drive member is disposed on one side of the unwinding guide roller of the unwinding assembly. One end of the first pressing member is connected to the output end of the fourth lifting drive member. The fourth lifting drive member can drive the first pressing member to approach or move away from the release film strip on the unwinding guide roller, so as to realize that the first pressing member fixes or releases the release film strip on the unwinding guide roller.

[0022] And / or,

[0023] The roll clamping mechanism also includes a second pressing member and a fifth lifting drive member. The fifth lifting drive member is located on one side of the winding guide roller of the winding assembly. One end of the second pressing member is connected to the output end of the fifth lifting drive member. The fifth lifting drive member can drive the second pressing member to approach or move away from the release film on the winding guide roller, so as to fix or release the release film on the winding guide roller.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a first-view structural diagram of an unwinding and stretching device based on separator separation according to an embodiment of the present invention;

[0027] Figure 2 This is a structural diagram from a second perspective of an unwinding and stretching device based on separator separation according to an embodiment of the present invention;

[0028] Figure 3 This is a side view of an unwinding and stretching device based on separator separation according to an embodiment of the present invention;

[0029] Figure 4 This is a structural diagram of the receiving mechanism according to an embodiment of the present utility model;

[0030] Figure 5 This is a structural view of the second clamping assembly from a first perspective according to an embodiment of the present utility model;

[0031] Figure 6 This is a structural view of the second clamping assembly from a second perspective according to an embodiment of the present utility model;

[0032] Figure 7 This is a structural diagram of the second lower clamping plate in an embodiment of the present utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Separating membrane material strip;

[0035] Flat section 2;

[0036] Separating membrane 3;

[0037] Release film 4;

[0038] Unwinding assembly 100; Unwinder 110; Unwinding guide roller 120;

[0039] 200 winding assembly; 210 winding machine; 220 winding guide roller;

[0040] 300 stripping guide roller;

[0041] Material receiving mechanism 400; bearing seat 410; adsorption plate 420; fixing frame 430; first lifting drive component 440; first guide rail 450; first slider 460; first clamping assembly 470; first upper clamping plate 471; first lower clamping plate 472; second lifting drive component 480; first pressing belt component 490;

[0042] Moving mechanism 500; moving drive component 510; moving seat 520; moving frame 530; second clamping assembly 540; second upper clamping plate 541; second lower clamping plate 542; third lifting drive component 543;

[0043] Second pressure belt component 600;

[0044] 700 machines. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0046] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] In the description of a utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first" and "second" are used, they are merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or the order of the indicated technical features.

[0048] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0049] Reference Figures 1 to 7 This utility model embodiment provides an unwinding and stretching device based on the separation of the release film, including a peeling mechanism, a receiving mechanism 400, a moving mechanism 500 and a roll clamping mechanism disposed on the machine base 700, wherein the peeling mechanism, the receiving mechanism 400, the moving mechanism 500 and the roll clamping mechanism are all electrically connected to the controller (not shown in the figure) of the machine base 700.

[0050] The separator in this application is a PI film, which has excellent high-temperature resistance and excellent electrical insulation properties.

[0051] like Figures 1 to 3 As shown, the peeling mechanism includes an unwinding assembly 100, a winding assembly 200, and a peeling guide roller 300, wherein the unwinding assembly 100 and the winding assembly 200 are arranged on the same side. Specifically, the unwinding assembly 100 includes an unwinder 110 and multiple unwinding guide rollers 120 arranged along the unwinding direction, while the winding assembly 200 includes a winding machine 210 and multiple winding guide rollers 220 arranged along the winding direction. One end of the separator film strip 1 is output from the unwinder 110 and, after passing around the unwinding guide roller 120, is conveyed to the peeling mechanism for peeling the separator film 3 from the release film 4. The peeled separator film 3 can be received by the receiving mechanism 400, while the release film 4, after passing around the peeling guide roller 300, is conveyed to the winding assembly 200. The release film 4, after passing around the winding guide roller 220, is fixed on the winding machine 210. The winding machine 210 winds up the release film 4, and the separated separator film 3 can be conveyed to the cutting machine for cutting according to the design requirements of the corresponding battery.

[0052] Specifically, the receiving mechanism 400 includes a support base 410, which supports the flat-lay section 2 (i.e., the release film strip section awaiting peeling). For ease of understanding, as... Figure 3 As shown, the direction of movement of the peeling guide roller 300 when it drives the release film strip 1 to the carrier seat 410 to form the flat section 2 is the first direction F1, while the direction of movement of the peeling guide roller 300 when it cooperates with the winding assembly 200 to peel the release film strip 1 is the second direction F2.

[0053] The working principle of the unwinding and stretching device provided in this application is as follows: First, the user guides the release film 4 of the release film strip 1 to the winding assembly 200 in advance. Then, the unwinding assembly 100, the winding assembly 200 and the peeling guide roller 300 are started at the same time. Specifically, the unwinding assembly 100 feeds out the release film strip 1 of a preset length, the winding assembly 200 feeds out the release film 4 of a preset length, and the peeling guide roller 300 moves along the first direction F1 and drives the release film strip 1 to the carrier seat 410, so that a flat section 2 (i.e. the release film strip section waiting to be peeled) is formed on the carrier seat 410.

[0054] At the same time, it should be noted that when the user guides the partially peeled release film 4 to the winding assembly 200, the user also needs to guide and fix the partially peeled release film 3 of the release film strip segment to the carrier 410 in advance. In addition, the release film 3 on the flat section 2 can also be fixed by the carrier 410, and the partially peeled release film 3 of the release film strip segment is located at the end away from the unwinding assembly 100. Subsequently, the winding assembly 200 and the peeling guide roller 300 are started simultaneously. The peeling guide roller 300 moves along the second direction F2, thus eliminating the flat-attached section 2. At the same time, the winding assembly 200 also starts to wind up the peeled release film 4, while the peeled release film 3 is fixed on the support seat 410. After the peeling guide roller 300 completes the peeling of the release film strip 1 from the flat-attached section 2, the unwinding assembly 100, the winding assembly 200, and the peeling guide roller 300 repeat the previous operation to peel the release film strip 1 from the next flat-attached section 2. That is, it can be understood that the unwinding and adhesive-pulling device of this application completes the peeling process of the release film strip 1 by fixing a preset section of release film strip 1 to be peeled on the support seat 410, using the peeling guide roller 300 to complete the peeling of the release film strip 3 from the release film 4 on the support seat 410, and repeating this operation. This achieves automated peeling and splicing of the release film 3, reducing manual intervention. Furthermore, by pre-setting the flat section 2, the tension fluctuation during the peeling process is reduced, so that when the film layers are peeled apart, the pushing force of the unwinding assembly 100 and the pulling force of the winding assembly 200 will not act on the peeled separator 3 at the same time, thus avoiding wrinkles or breakage of the separator 3, effectively improving the flatness of the film layer, and ensuring the quality of the battery.

[0055] According to some embodiments of this application, the reciprocating movement of the stripping guide roller 300 is achieved by a moving mechanism 500. For example... Figure 1 and Figure 2 As shown, the moving mechanism 500 includes a moving drive 510, a moving base 520, and a moving frame 530.

[0056] Specifically, the movable drive component 510 is fixed on the movable base 520, the movable frame 530 is slidably connected to the movable base 520, the peeling guide roller 300 is installed on the movable frame 530, the output end of the movable drive component 510 is connected to the movable frame 530, and the movable drive component 510 can drive the movable frame 530 to slide on the movable base 520 so as to realize the peeling guide roller 300 to reciprocate between the first direction F1 and the second direction F2, so as to form the flat bonding section 2 and realize the peeling process of the release film 3.

[0057] It is important to note that when the peeling guide roller 300 moves toward the second direction F2, the roller's moving speed is the same as the winding speed. This avoids film stretching or accumulation caused by a mismatch between the peeling guide roller 300's moving speed and the winding speed. It can effectively eliminate film tension fluctuations caused by speed differences, prevent deformation or breakage of the release film 3, improve the stability of the peeling process, and adapt to the needs of high-speed production.

[0058] As a further improvement to the solution, the moving mechanism 500 is also provided with a second clamping assembly 540. Specifically, the second clamping assembly 540 is mounted on the moving frame 530 and is arranged on the same side as the peeling guide roller 300. The second clamping assembly 540 is capable of clamping the release film 3 that has been peeled off from the flat bonding section 2.

[0059] That is, it can be understood that after the peeling guide roller 300 completes the peeling of the film layer of the first flat bonding section 2, the second clamping assembly 540 starts and clamps the part of the release film 3 peeled out of the first flat bonding section 2. When the unwinding assembly 100 and the peeling guide roller 300 repeat the previous operation to form the second flat bonding section 2 to be peeled out, when the peeling guide roller 300 moves toward the first direction F1, the second clamping assembly 540 simultaneously follows the peeling guide roller 300 and moves toward the first direction F1 to drive the release film 3 peeled out in the previous section to move. This avoids the release film 3 peeled out in the previous section from accumulating and forming wrinkles when forming the second flat bonding section 2, which would cause the release film 3 to be scrapped and reduce the scrap rate.

[0060] like Figures 5 to 7 As shown, this application provides a first embodiment of the second clamping assembly. Specifically, the second clamping assembly 540 consists of a second upper clamping plate 541, a second lower clamping plate 542, and two third lifting drive members 543. The second upper clamping plate 541 and the second lower clamping plate 542 are respectively connected to the output ends of the two third lifting drive members 543. The two third lifting drive members 543 can respectively drive the second upper clamping plate 541 and the second lower clamping plate 542 to move closer or further apart, so as to clamp the separated release film 3 of the flat-attached section 2. That is, it can be understood that the second upper clamping plate 541 and the second lower clamping plate 542 are moved by the third lifting drive members 543 to form an openable clamping structure, so as to clamp or release the release film 3.

[0061] Alternatively, this application provides a second embodiment (not shown) of the second clamping assembly 540. The second clamping assembly 540 consists of a second upper clamping plate 541, a second lower clamping plate 542, and a third lifting drive member 543. One end of the second upper clamping plate 541 is fixedly connected to the movable frame 530, and one end of the second lower clamping plate 542 is connected to the output end of the third lifting drive member 543. The third lifting drive member 543 drives the second lower clamping plate 542 away from or towards the second upper clamping plate 541 to clamp or release the isolation membrane 3.

[0062] As a further improvement to the plan, such as Figure 7 As shown, the second lower clamping plate 542 is provided with a negative pressure suction channel connected to an external negative pressure mechanism (not shown in the figure). The isolation membrane 3 is fixed flat on the second lower clamping plate 542 by vacuum negative pressure adsorption to avoid wrinkles in the isolation membrane 33 when it is clamped or released, which would affect the product quality.

[0063] Optionally, the second clamping assembly 540 may be a pneumatic gripper. When the second clamping assembly 540 is a pneumatic gripper, the third lifting drive 543 is used to adjust the position of the second clamping assembly 540 in the vertical direction.

[0064] Optionally, the movable seat 520 and the movable frame 530 can achieve reciprocating motion through a linear motion module mechanism.

[0065] Optionally, the third lifting drive 543 may be a telescopic cylinder.

[0066] According to some embodiments of this application, an adsorption plate 420 is provided on the support 410. The adsorption plate 420 can be attached to the flat section 2, and the adsorption plate 420 is used to adsorb and fix the release film 3 of the flat section 2. Specifically, as Figure 4 As shown, the adsorption plate 420 is provided with a negative pressure suction channel, which is connected to an external negative pressure mechanism (not shown in the figure).

[0067] That is, it can be understood that when the peeling guide roller 300 guides the flat-coated section 2 onto the adsorption plate 420, the external negative pressure mechanism (not shown in the figure) is activated, and the flat-coated section 2 is fixed onto the adsorption plate 420 by the vacuum negative pressure adsorption, in order to wait for the film separation. When the flat-coated section 2 completes the film separation, the external negative pressure mechanism (not shown in the figure) is paused. At this time, the peeled-off release membrane 3 can be removed from the adsorption plate 420, and the film separation of the next flat-coated section 2 can be prepared to begin.

[0068] Specifically, the negative pressure suction channels are evenly distributed on the adsorption plate 420 to ensure adsorption uniformity, ensure that the isolation membrane 3 can be flat and fixed, and avoid the accumulation of wrinkles in the isolation membrane 3.

[0069] Furthermore, the fixed frame 430 is provided with a first lifting drive component 440, which is fixed to the fixed frame 430. The first lifting drive component 440 can drive the carrier 410 to slide on the fixed frame 430 to achieve position adjustment. The first lifting drive component 440 realizes the vertical lifting of the carrier 410 to ensure that the height of the carrier 410 can match the height of the peeling guide roller 300, so as to meet the requirements of forming flat bonding sections 2 of release films 3 with different thicknesses while ensuring the quality of film peeling.

[0070] As a further improvement to the design, a first guide assembly is provided between the support 410 and the fixing frame 430, such as... Figure 4 As shown, the first guide assembly includes a first guide rail 450 and a first slider 460. The first guide rail 450 and the first slider 460 are slidably connected. The first guide rail 450 is fixed to one of the support base 410 and the fixing frame 430, and the first slider 460 is fixed to the other of the support base 410 and the fixing frame 430.

[0071] Furthermore, to improve the stability of the release membrane 3 during membrane peeling, the unwinding and stretching device of this application is also equipped with a roll clamping mechanism.

[0072] Specifically, such as Figures 1 to 4 As shown, the roll clamping mechanism includes a first clamping assembly 470, a first pressing belt member 490, and a fourth lifting drive member (not shown in the figure).

[0073] The first clamping assembly 470 includes a first upper clamping plate 471 and a second lifting drive 480. One end of the first upper clamping plate 471 is connected to the output end of the second lifting drive 480. The second lifting drive 480 can drive the first upper clamping plate 471 to rise and fall, so that the first upper clamping plate 471 presses the portion of the release film 3 that has been peeled off from the flat section 2 onto the adsorption plate 420.

[0074] Understandably, when the peeling guide roller 300 moves in the second direction F2 to separate the film layers of the flat-lay section 2, the first upper clamping plate presses the peeled portion of the release liner 3 onto the adsorption plate 420. This prevents insufficient adsorption force on the adsorption plate 420, allowing the flat-lay section 2 to be lifted away from the adsorption plate 420 during film separation due to the adhesive force between the film layers. Simultaneously, it also prevents the peeled release liner 3 from easily retracting due to tension changes. After the flat-lay section 2 completes film separation, the second lifting drive 480 can drive the first upper clamping plate upwards, allowing it to release the release liner 3, which can then be output to the next processing mechanism.

[0075] Alternatively, in another embodiment of the first clamping assembly, the first clamping assembly 470 may include a first upper clamping plate 471, a second lower clamping plate 542, and a second lifting drive member 480. The first lower clamping plate 472 is fixed to the support base 410. One end of the first upper clamping plate 471 is connected to the output end of the second lifting drive member 480. The second lifting drive member 480 moves the first upper clamping plate 471 away from or towards the first lower clamping plate 472 to clamp or release the separator 3. Further, the first lower clamping plate 472 may be provided with a negative pressure suction channel connected to an external negative pressure mechanism (not shown). Vacuum negative pressure adsorption is used to flatly fix the separator 3 onto the first lower clamping plate 472 to prevent wrinkles from appearing on the separator 3 during clamping or release, thus affecting product quality. Preferably, the thickness of the first lower clamping plate 472 is equal to the thickness of the adsorption plate 420 to prevent wrinkles or creases from appearing on the separator 33, thus affecting product quality.

[0076] Alternatively, in another embodiment of the first clamping assembly, the first clamping assembly 470 includes a pneumatic gripper and a second lifting drive 480. The pneumatic gripper clamps or releases the isolation membrane 3, while the second lifting drive 480 can drive the pneumatic gripper to adjust its position in the vertical direction according to the position of the adsorption plate 420 to ensure the flatness of the isolation membrane 3.

[0077] Furthermore, to further improve the quality of membrane separation, the first pressing member 490 is positioned at one end near the unwinding assembly 100, such as... Figure 3 As shown, one end of the first pressing member 490 is connected to the output end of the fourth lifting drive member (not shown). The fourth lifting drive member (not shown) can drive the first pressing member 490 to move and abut against the end of the isolation film strip 1 on any one of the unwinding guide rollers 120 of the unwinding assembly 100.

[0078] In addition, as a further improvement to the plan, such as Figure 3 As shown, the roll clamping mechanism also includes a second pressing member 600 and a fifth lifting drive member (not shown). One end of the second pressing member 600 is connected to the output end of the fifth lifting drive member (not shown). The fifth lifting drive member (not shown) can drive the second pressing member 600 to move and abut against the release film 4 on any one of the take-up guide rollers 220 of the take-up assembly 200.

[0079] That is, it can be understood that when the unwinding assembly 100 and the winding assembly 200 start unwinding at the same time, so that the flat section 2 is completely attached to the adsorption plate 420, the first pressing member 490 presses the release film material 1 onto the unwinding guide roller 120, while the second pressing member 600 presses the release film 4 onto the winding guide roller 220, so that when the flat section 2 is formed, the tension between the winding assembly 200, the unwinding assembly 100 and the peeling guide roller 300 can be maintained to avoid wrinkles in the flat section 2.

[0080] It should be noted that the reason why the take-up assembly 200 needs to start unwinding along with the unwinding assembly 100 when forming the flat-applied section 2 is to avoid the release film 4 on the take-up assembly 200 exerting tension on the release film strip when the peeling guide roller 300 pulls the release film strip to the adsorption plate 420 to form the flat-applied section 2. This would cause film separation during the formation of the flat-applied section 2, which would not only prevent the flat-applied section 2 from forming properly, but also cause wrinkles in the separated release film 3. When the peeling mechanism starts to separate the film layers of the flat-applied section 2, the fifth lifting drive (not shown in the figure) drives the second pressing strip 600 away from the take-up guide roller 220 to release the release film 4. At this time, the take-up assembly 200 and the peeling guide roller 300 start simultaneously, completing the film separation of the flat-applied section 2 and the winding of the release film 4. After the first flat-coated section 2 film layer separation is completed, the fourth lifting drive (not shown in the figure) drives the first pressing belt 490 away from the unwinding guide roller 120 to release the isolation film belt 1. At this time, the operation can be repeated to form the second flat-coated section 2 to be peeled off.

[0081] Optionally, both the fourth lifting drive (not shown) and the fifth lifting drive (not shown) can be telescopic cylinders.

[0082] The unwinding and stretching device based on separator separation provided in this application achieves automated and high-precision peeling of the separator through precise mechanical design and multi-mechanism coordinated control, which can effectively improve the quality of separator layer peeling and improve the production quality of batteries.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rewinding and stretching device based on separator membrane separation, characterized in that, include: The peeling mechanism includes an unwinding assembly (100), a winding assembly (200), and a peeling guide roller (300) disposed between the unwinding assembly (100) and the winding assembly (200), the peeling guide roller (300) being capable of reciprocating translation to form and eliminate flat sections (2) of the release film strip (1). The receiving mechanism (400) includes a support (410) capable of engaging with the flat section (2).

2. The unwinding and stretching device based on separator membrane separation according to claim 1, characterized in that, The device includes a moving mechanism (500), which includes a moving drive (510). The output end of the moving drive (510) is connected to the peeling guide roller (300). The moving drive (510) can drive the peeling guide roller (300) to reciprocate and translate so that the release film strip (1) forms and eliminates the flat section (2). When the peeling guide roller (300) eliminates the flat section (2), the moving speed of the peeling guide roller (300) is the same as the winding speed of the winding assembly (200).

3. The unwinding and stretching device based on separator membrane separation according to claim 2, characterized in that, The moving mechanism (500) further includes a moving base (520) and a moving frame (530). The moving drive (510) is fixed on the moving base (520), and the moving frame (530) is slidably connected to the moving base (520). The peeling guide roller (300) is mounted on the moving frame (530). The output end of the moving drive (510) is connected to the moving frame (530). The moving drive (510) can drive the moving frame (530) to slide on the moving base (520) to realize the reciprocating translation of the peeling guide roller (300).

4. The unwinding and stretching device based on separator membrane separation according to claim 3, characterized in that, The moving mechanism (500) further includes a second clamping assembly (540), which is mounted on the moving frame (530). The second clamping assembly (540) is disposed on the same side as the peeling guide roller (300), and the second clamping assembly (540) is capable of clamping the separated release film (3) of the flat bonding section.

5. The unwinding and stretching device based on separator membrane separation according to claim 4, characterized in that, The second clamping assembly (540) includes a second upper clamping plate (541), a second lower clamping plate (542), and a third lifting drive (543). One of the second upper clamping plate (541) and the second lower clamping plate (542) is connected to the output end of the third lifting drive (543). The other of the second upper clamping plate (541) and the second lower clamping plate (542) is fixed to the movable frame. The third lifting drive (543) can drive one of the second upper clamping plate (541) and the second lower clamping plate (542) to move closer to or further away from the other, so as to clamp the separated release film (3) of the flat section. or, The second clamping assembly (540) includes a second upper clamping plate (541), a second lower clamping plate (542), and two third lifting drive members (543). The second upper clamping plate (541) and the second lower clamping plate (542) are respectively connected to the output ends of the two third lifting drive members (543). The two third lifting drive members (543) can respectively drive the second upper clamping plate (541) and the second lower clamping plate (542) to move closer or further away from each other, so as to clamp the separated isolation film (3) of the flat section.

6. The unwinding and stretching device based on separator membrane separation according to claim 1, characterized in that, The support base (410) is provided with an adsorption plate (420), the adsorption plate (420) is provided with a negative pressure suction channel, the negative pressure suction channel is connected to an external negative pressure mechanism, and the adsorption plate (420) is used to adsorb and fix the isolation film (3) of the flat section. And / or, the separator is a PI membrane.

7. The unwinding and stretching device based on separator membrane separation according to claim 1, characterized in that, It also includes a fixing frame (430), the support seat (410) is slidably connected to the fixing frame (430), and the position of the support seat (410) can be adjusted along the radial direction of the fixing frame (430).

8. The unwinding and stretching device based on separator membrane separation according to claim 7, characterized in that, The fixed frame (430) is provided with a first lifting drive (440), the output end of the first lifting drive (440) is connected to the support seat (410), and the first lifting drive (440) can drive the support seat (410) to slide on the fixed frame (430) to achieve position adjustment.

9. The unwinding and stretching device based on separator membrane separation according to claim 7, characterized in that, It also includes a roll clamping mechanism, which includes a first clamping component (470) and a second lifting drive component (480). The second lifting drive component (480) is disposed on the fixed frame. One end of the first clamping component (470) is connected to the output end of the second lifting drive component (480). The second lifting drive component (480) can drive the first clamping component (470) away from or near the peeled release film (3) of the flat bonding section (2) so as to fix or release the peeled release film (3) of the flat bonding section (2) by the first clamping component (470).

10. The unwinding and stretching device based on separator membrane separation according to claim 9, characterized in that, The roll clamping mechanism further includes a first pressing member (490) and a fourth lifting drive member. The fourth lifting drive member is disposed on one side of the unwinding guide roller (120) of the unwinding assembly (100). One end of the first pressing member (490) is connected to the output end of the fourth lifting drive member. The fourth lifting drive member can drive the first pressing member (490) to move closer to or away from the release film strip (1) on the unwinding guide roller (120) so that the first pressing member (490) can fix or release the release film strip (1) on the unwinding guide roller (120). And / or, The roll clamping mechanism further includes a second pressing member (600) and a fifth lifting drive member. The fifth lifting drive member is disposed on one side of the winding guide roller (220) of the winding assembly (200). One end of the second pressing member (600) is connected to the output end of the fifth lifting drive member. The fifth lifting drive member can drive the second pressing member (600) to move closer to or away from the release film (4) on the winding guide roller (220) so that the second pressing member (600) can fix or release the release film (4) on the winding guide roller (220).

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