Diaphragm stacking assembly and battery cell stacking equipment

Abstract

The invention discloses a diaphragm stacking assembly and battery core lamination equipment, and relates to the technical field of lithium battery production and manufacturing, the diaphragm stacking assembly is used for stacking diaphragms in the battery core lamination equipment, the diaphragm stacking assembly comprises a lamination table and two translation mechanisms, and the lamination table is used for being arranged on a machine tool of the battery core lamination equipment; the two translation mechanisms are arranged on the two opposite sides of the lamination table in a spaced mode, each translation mechanism can horizontally move relative to the lamination table, and the diaphragm is arranged between the two translation mechanisms in a penetrating mode; the surfaces of the translation mechanisms are used for picking up the pole pieces, and the two translation mechanisms alternately and horizontally move and are used for pushing the diaphragms to be bent and folding the diaphragms and the pole pieces on the lamination table. The diaphragm stacking assembly provided by the invention aims to realize diaphragm stacking and pole piece placement through one set of module, so that the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production and manufacturing equipment, and in particular to a diaphragm stacking assembly and battery core stacking equipment. Background Art

[0002] The lithium battery lamination process is an important step in the lithium battery manufacturing process. The lithium battery lamination process is a production process in which the positive and negative electrodes and separators are alternately stacked together to form a multi-layer laminated electrode core.

[0003] The existing battery cell stacking equipment uses a robot to place the electrodes between the diaphragms. The diaphragm stacking movement and the electrode movement are independent of each other, which makes the overall size of the battery cell stacking equipment larger and the cost higher. Summary of the Invention

[0004] The main purpose of the present invention is to propose a diaphragm stacking assembly and battery cell stacking equipment, aiming to achieve diaphragm stacking and electrode placement through a set of modules to reduce costs.

[0005] To achieve the above-mentioned purpose, the diaphragm stacking assembly proposed in the present invention is used for stacking diaphragms in battery cell stacking equipment. The diaphragm stacking assembly includes a stacking table and two translation mechanisms. The stacking table is used to be arranged on a machine tool of the battery cell stacking equipment; the two translation mechanisms are arranged at intervals on opposite sides of the stacking table, and each translation mechanism can move horizontally relative to the stacking table, and the diaphragm is used to be passed through the two translation mechanisms; the surface of the translation mechanism is used to pick up the pole piece, and the two translation mechanisms move horizontally alternately to push the diaphragm to bend and fold the diaphragm and the pole piece on the stacking table.

[0006] In one embodiment, the diaphragm stacking assembly further comprises a horizontal driving member, which is located above the stacking platform. The driving portion of the horizontal driving member is connected to the two translation mechanisms so that the two translation mechanisms can synchronously move horizontally relative to the stacking platform.

[0007] In one embodiment, the diaphragm stacking assembly further comprises a vertical driving member, wherein the vertical driving member is connected to the driving portion of the horizontal driving member, and the driving portion of the vertical driving member is connected to the two translation mechanisms so that the two translation mechanisms can synchronously move in the horizontal and vertical directions relative to the stacking table.

[0008] In one embodiment, each of the translation mechanisms includes a feeding portion and a roller, the roller is rotatably connected to one side of the feeding portion, and the two rollers are arranged opposite to each other.

[0009] In one embodiment, the diaphragm stacking assembly further includes two guide rollers, which are provided on the machine tool and located above the stacking table. The diaphragm is used to pass between the two guide rollers and be transmitted to between the two translation mechanisms through the rotation of the two guide rollers.

[0010] In one embodiment, the diaphragm stacking assembly further includes a knife pressing mechanism, which is movably disposed on one side of the stacking platform and is used to press the diaphragm against the stacking platform.

[0011] In one embodiment, the number of the knife pressing mechanisms is four, and the four knife pressing mechanisms are arranged around the outer circumference of the lamination platform, and are respectively used to press one side of the diaphragm against the lamination platform.

[0012] The present invention also proposes a battery cell stacking device, comprising a machine tool, a diaphragm stacking assembly as described above, and a diaphragm conveying assembly, wherein the diaphragm conveying assembly is arranged on the machine tool and located above the diaphragm stacking assembly, and the diaphragm conveying assembly is used to convey the diaphragm to the diaphragm stacking assembly.

[0013] In one embodiment, the diaphragm conveying assembly includes an unwinding assembly and a tensioning assembly, wherein the unwinding assembly is used to unwind the diaphragm and transfer the diaphragm to the tensioning assembly, and the tensioning assembly is used to tension the diaphragm.

[0014] In one embodiment, the diaphragm conveying assembly further includes a rotary adsorption assembly, which is disposed between the unwinding assembly and the tensioning assembly and is configured to adsorb and transport the diaphragm.

[0015] The technical solution of the present invention adopts two translation mechanisms spaced apart on opposite sides of the stacking table. The two translation mechanisms are used to pick up the positive electrode sheet and the negative electrode sheet respectively. The diaphragm is arranged between the two translation mechanisms. Through the alternating horizontal movement of the two translation mechanisms, the diaphragm can be bent and covered on the stacking table. The positive electrode sheet or the negative electrode sheet is then placed by the translation mechanism, and finally the diaphragm and electrode sheet stacking process is realized, completing the battery cell processing process. The two translation mechanisms realize the picking and placement of the electrode sheet and the stacking of the diaphragm, and finally complete the battery cell stacking process, reducing the volume of the processing equipment and reducing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of an embodiment of a battery cell stacking device provided by the present invention;

[0018] Figure 2 A schematic structural diagram of an embodiment of a diaphragm stacking assembly provided by the present invention;

[0019] Figure 3 This is a schematic structural diagram of another embodiment of the diaphragm stacking assembly provided by the present invention.

[0020] Description of Figure Numbers:

[0021] 100. Battery cell stacking equipment; 1. Diaphragm stacking assembly; 11. Stacking table; 12. Translation mechanism; 121. Loading unit; 122. Roller; 13. Horizontal drive member; 14. Vertical drive member; 15. Guide roller; 16. Pressing mechanism; 2. Diaphragm conveying assembly; 21. Unwinding assembly; 22. Tensioning assembly; 23. Rotary adsorption assembly.

[0022] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] The lithium battery lamination process is an important step in the lithium battery manufacturing process. The lithium battery lamination process is a production process in which the positive and negative electrodes and separators are alternately stacked together to form a multi-layer laminated electrode core.

[0027] The existing battery cell stacking equipment uses a robot to place the electrodes between the diaphragms. The diaphragm stacking movement and the electrode movement are independent of each other, which makes the overall size of the battery cell stacking equipment larger and the cost higher.

[0028] The present invention proposes a diaphragm stacking assembly and a battery cell stacking device, aiming to realize diaphragm stacking and electrode placement through a set of modules to reduce costs.

[0029] See also Figures 1 to 3 In one embodiment of the present invention, the diaphragm stacking assembly 1 is used for stacking diaphragms in a battery cell stacking device 100. The diaphragm stacking assembly 1 includes a stacking table 11 and two translation mechanisms 12. The stacking table 11 is used to be arranged on a machine tool of the battery cell stacking device 100; the two translation mechanisms 12 are spaced apart on opposite sides of the stacking table 11, and each translation mechanism 12 can move horizontally relative to the stacking table 11. The diaphragm is used to pass through the two translation mechanisms 12; the surface of the translation mechanism 12 is used to pick up the electrode, and the two translation mechanisms 12 move horizontally alternately to push the diaphragm to bend and fold the diaphragm and the electrode on the stacking table 11.

[0030] In this embodiment, the stacking table 11 is a frame structure. One surface of the stacking table 11 is used to stack the diaphragms and place the electrodes. The battery cell stacking process is performed on the surface of the stacking table 11. The stacking table 11 can be made of a durable metal material, such as stainless steel or aluminum alloy. Two translation mechanisms 12 are spaced apart above one surface of the stacking table 11 and located on opposite sides of the stacking table 11. The diaphragm is inserted between the two translation mechanisms 12. The two translation mechanisms 12 are moved horizontally and alternately to bend the diaphragm, achieving the effect of diaphragm stacking. When one translation mechanism 12 moves toward the diaphragm, pushing it to fold, the surface of the translation mechanism 12 can release the electrode and place it on the folded diaphragm on the stacking table 11. Then, the other translation mechanism 12 moves toward the diaphragm, pushing it to fold to cover the electrode of the previous layer. The surface of the other translation mechanism 12 releases the electrode and places it on the diaphragm of the next layer. This reciprocating process completes the battery cell stacking process.

[0031] The surface of the translation mechanism 12 can pick up the pole piece. The specific picking method can be to set an electrically controlled electromagnet structure on the surface of the translation mechanism 12, and realize the magnetism or non-magnetism of the electromagnet structure by turning on and off the power, thereby realizing the picking up and releasing of the pole piece by the translation mechanism 12, and completing the picking up and placement of the pole piece. The specific picking method can also be to set a vacuum chamber inside the translation mechanism 12, and to open an adsorption hole connected to the vacuum chamber on the surface of the translation mechanism 12, and to realize the picking up and releasing of the pole piece by the translation mechanism 12 by applying negative pressure to the vacuum chamber and the adsorption hole, thereby completing the picking up and placement operation of the pole piece.

[0032] In a preferred embodiment, a rounded corner is formed on the side of the translation mechanism 12 facing the diaphragm, so that the diaphragm will not be cut during the movement of the translation mechanism 12, thereby avoiding affecting the processing of the battery cell stacking.

[0033] The technical solution of the present invention adopts two translation mechanisms 12 spaced apart on opposite sides of a stacking table 11. The two translation mechanisms 12 are used to pick up the positive electrode sheet and the negative electrode sheet respectively. The diaphragm is passed through the two translation mechanisms 12. Through the alternating horizontal movement of the two translation mechanisms 12, the diaphragm can be bent and covered on the stacking table 11. The positive electrode sheet or the negative electrode sheet is then placed through the translation mechanism 12, and finally the diaphragm and electrode sheet stacking process is realized, completing the processing of the battery cell. The two translation mechanisms 12 are used to pick up and place the electrode sheet and to stack the diaphragm, and finally the battery cell stacking process is completed, reducing the volume of the processing equipment and reducing the equipment cost.

[0034] In an embodiment of the present invention, the diaphragm stacking assembly 1 also includes a horizontal driving member 13, which is located above the stacking table 11. The driving part of the horizontal driving member 13 is connected to the two translation mechanisms 12 so that the two translation mechanisms 12 can move horizontally relative to the stacking table 11 synchronously.

[0035] In this embodiment, the horizontal driving member 13 may adopt a stepping motor or a linear screw motor to achieve the horizontal movement effect relative to the lamination table 11. The specific implementation of the horizontal driving member 13 is not further limited here. The driving part of the horizontal driving member 13 is connected to the two translation mechanisms 12 at the same time. The two translation mechanisms 12 are arranged at intervals on the driving part of the horizontal driving member 13, and the two translation mechanisms 12 are arranged on the same horizontal plane. The driving part of the horizontal driving member 13 drives the two translation mechanisms 12 to move horizontally synchronously. When the first translation mechanism 12 moves toward the diaphragm, the second translation mechanism 12 moves away from the diaphragm and can pick up the pole piece from the loading platform. After the first translation mechanism 12 pushes the diaphragm to fold, the surface of the translation mechanism 12 can release the pole piece and place it on the folded diaphragm on the stacking platform 11. Then the second translation mechanism 12 moves toward the diaphragm, and the first translation mechanism 12 moves in the direction away from the diaphragm and picks up the pole piece of the other pole from the loading platform. The second translation mechanism 12 pushes the diaphragm to fold to cover the pole piece of the previous layer. The surface of the second translation mechanism 12 releases the pole piece and places it on the diaphragm of this layer. This process is repeated to complete the stacking process of the battery cell. By using a horizontal driving member 13 to achieve synchronous movement of the two translation mechanisms 12, the picking up of the pole pieces and the stacking of the diaphragms can be completed, thereby completing the stacking process of the battery cell, which can reduce the volume of the processing equipment and reduce the equipment cost.

[0036] In an embodiment of the present invention, the diaphragm stacking assembly 1 also includes a vertical driving member 14, which is connected to the driving part of the horizontal driving member 13, and the driving part of the vertical driving member 14 is connected to the two translation mechanisms 12 so that the two translation mechanisms 12 can move synchronously in the horizontal and vertical directions relative to the stacking table 11.

[0037] In this embodiment, the diaphragm stacking assembly 1 also includes a vertical drive member 14, which is connected to the drive portion of the horizontal drive member 13, and the two translation mechanisms 12 are connected to the drive portion of the vertical drive member 14. Through the joint drive of the vertical drive member 14 and the horizontal drive member 13, the two translation mechanisms 12 can perform two-dimensional motion on the vertical plane relative to the gasket table, which can realize the horizontal reciprocating movement of the two translation mechanisms 12. When the number of gaskets and diaphragm layers is relatively large, the vertical distance between the two translation mechanisms 12 and the stacking table 11 can be adjusted by the vertical drive member 14, so that the battery cell stacking can become thicker and thicker, and finally the entire battery cell stacking process is completed. The vertical drive member 14 can use the combination of a cylinder and a guide rail to drive the two translation mechanisms 12 to move in the vertical direction, or it can use a linear motor or a stepper motor, etc., which is not further limited here. In a preferred embodiment, there are two vertical driving members 14, and the two vertical driving members 14 are arranged at intervals on the driving part of the horizontal driving member 13. The driving parts of the two vertical driving members 14 are simultaneously connected to the two translation mechanisms 12, so that the two translation mechanisms 12 can move synchronously in the vertical direction, thereby improving the stability of the vertical movement.

[0038] In the embodiment of the present invention, each translation mechanism 12 includes a feeding portion 121 and a roller 122 . The roller 122 is rotatably connected to one side of the feeding portion 121 , and the two rollers 122 are disposed opposite to each other.

[0039] In this embodiment, each translation mechanism 12 includes a loading part 121 and a roller. The loading part 121 is used to pick up and place the electrode, and the roller 122 is used to abut and push the diaphragm to fold. The roller 122 is used to push the diaphragm. On the one hand, the roller 122 is connected to the loading part 121 through rotation to guide the diaphragm. On the other hand, the roller 122 can better fit the diaphragm to prevent it from being scratched or deformed.

[0040] The loading part 121 can pick up the pole piece. The specific picking method can be to set an electrically controlled electromagnet structure in the loading part 121, and realize the magnetism or non-magnetism of the electromagnet structure by turning the power on and off, thereby realizing the picking up and releasing of the pole piece by the loading part 121, and completing the picking up and placement of the pole piece; the loading part 121 can also pick up the pole piece in a way that a vacuum chamber is set inside the loading part 121, and an adsorption hole connected to the vacuum chamber is opened on the surface of the loading part 121, and negative pressure is applied to the vacuum chamber and the adsorption hole, thereby realizing the picking up and releasing of the pole piece by the loading part 121, and completing the picking up and placement operation of the pole piece.

[0041] In an embodiment of the present invention, the diaphragm stacking assembly 1 also includes two guide rollers 15, which are arranged on the machine tool and located above the stacking table 11. The diaphragm is used to pass between the two guide rollers 15 and is transmitted to between the two translation mechanisms 12 through the rotation of the two guide rollers 15.

[0042] In this embodiment, two guide rollers 15 clamp and rotate to transfer the separator between the two guide rollers 15 to the space between the two translation mechanisms 12 for subsequent cell stacking. The two guide rollers 15 maintain tension on the separator, reducing wrinkles during subsequent stacking and improving the quality of the cell products.

[0043] In an embodiment of the present invention, the diaphragm stacking assembly 1 further includes a knife pressing mechanism 16 , which is movably disposed on one side of the stacking platform 11 and is used to press the diaphragm against the stacking platform 11 .

[0044] In this embodiment, the diaphragm stacking assembly 1 further includes a knife pressing mechanism 16 movably mounted on the lamination table 11. This knife pressing mechanism 16 can press the stacked diaphragms and electrode sheets against the lamination table 11 to facilitate the subsequent lamination process and prevent the stacked diaphragms or electrode sheets from being torn apart, which would interrupt the cell diaphragm lamination process and affect product processing efficiency. The knife pressing mechanism 16 includes a knife pressing mechanism and a driver for driving the knife pressing mechanism. The driver can, under program control, drive the knife pressing mechanism toward or away from the lamination table 11, thereby automatically pressing and securing the stacked diaphragms or electrode sheets against the lamination table 11.

[0045] In the embodiment of the present invention, there are four knife pressing mechanisms 16 , which are arranged around the outer circumference of the lamination platform 11 and are respectively used to press one side of the diaphragm against the lamination platform 11 .

[0046] In this embodiment, there are four pressing mechanisms 16, which are arranged around the outer periphery of the stacking platform 11. Specifically, the four pressing mechanisms 16 are arranged at the four corners of the stacking platform 11, which can press all or at least partially the four corners of the stacked diaphragms or pole pieces, further preventing the stacked diaphragms or pole pieces from being torn apart, causing the process flow of battery cell diaphragm stacking to be interrupted, and affecting product processing efficiency.

[0047] The present invention also proposes a battery cell stacking device 100, comprising a machine tool, the diaphragm stacking assembly 1 as described above, and a diaphragm conveying assembly 2, wherein the diaphragm conveying assembly 2 is arranged on the machine tool and located above the diaphragm stacking assembly 1, and the diaphragm conveying assembly 2 is used to convey the diaphragm to the diaphragm stacking assembly 1.

[0048] In this embodiment, the battery cell stacking apparatus 100 includes a machine tool, a diaphragm conveying assembly 2, and a diaphragm stacking assembly 1. The machine tool is a common commercially available processing machine tool and is not further defined herein. The diaphragm conveying assembly 2 is located above the diaphragm stacking assembly 1. The diaphragms are transferred from the diaphragm conveying assembly 2 to the diaphragm stacking assembly 1 for the battery cell stacking process.

[0049] In an embodiment of the present invention, the diaphragm conveying assembly 2 includes an unwinding assembly 21 and a tensioning assembly 22. The unwinding assembly 21 is used to unwind the diaphragm and transfer the diaphragm to the tensioning assembly 22. The tensioning assembly 22 is used to tension the diaphragm.

[0050] In this embodiment, the diaphragm conveying assembly 2 includes an unwinding assembly 21 and a tensioning assembly 22. The unwinding assembly 21 can accommodate more rolled diaphragms. The conveying rate and tensioning degree of the diaphragm are controlled by the rotation of the unwinding assembly 21.

[0051] The tensioning assembly 22 has a cavity within it, with a blowhole defined in one of its walls. The diaphragm is partially attached to the wall and covers the blowhole. An external air source assembly inflates the cavity within the tensioning assembly 22, blowing the diaphragm upwards away from the tensioning assembly 22 through the blowhole, thereby tensioning the diaphragm. Blowing air through the cavity and the blowhole tensions the diaphragm, which is gently stretched and prevents deformation, improving the quality of the battery cell.

[0052] In an embodiment of the present invention, the diaphragm conveying assembly 2 further includes a rotary adsorption assembly 23 . The rotary adsorption assembly 23 is disposed between the unwinding assembly 21 and the tensioning assembly 22 and is used to adsorb and transport the diaphragm.

[0053] In this embodiment, a rotating adsorption component 23 is further provided between the unwinding component 21 and the tensioning component 22. The rotating adsorption component 23 is a hollow roller with a plurality of air holes. The diaphragm is adsorbed by applying negative pressure to the roller and the air holes, and the roller can rotate around its own axis so that the diaphragm rotates with the roller, thereby guiding the flow direction of the diaphragm. Vacuum adsorption of the diaphragm can prevent the diaphragm from deforming, thereby affecting the quality of battery cell processing.

[0054] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A diaphragm stacking assembly for stacking diaphragms in battery cell stacking equipment, characterized in that: The diaphragm stack assembly comprises: A lamination table, the lamination table being used for a machine tool provided on the battery cell lamination equipment; and Two translation mechanisms, the two translation mechanisms are spaced apart and arranged on opposite sides of the lamination platform, each of the translation mechanisms can move horizontally relative to the lamination platform, and the diaphragm is used to pass through the two translation mechanisms; The surface of the translation mechanism is used to pick up the pole piece, and the two translation mechanisms move horizontally alternately to push the diaphragm to bend and fold the diaphragm and the pole piece on the lamination table.

2. The diaphragm stack assembly according to claim 1, wherein: The diaphragm stacking assembly also includes a horizontal driving member, which is located above the stacking platform. The driving part of the horizontal driving member is connected to the two translation mechanisms so that the two translation mechanisms can move horizontally relative to the stacking platform synchronously.

3. The diaphragm stack assembly according to claim 2, wherein: The diaphragm stacking assembly also includes a vertical driving member, which is connected to the driving part of the horizontal driving member. The driving part of the vertical driving member is connected to the two translation mechanisms so that the two translation mechanisms can move horizontally and vertically relative to the stacking table synchronously.

4. The diaphragm stack assembly according to claim 3, wherein: Each of the translation mechanisms includes a feeding portion and a roller, wherein the roller is rotatably connected to one side of the feeding portion, and the two rollers are arranged opposite to each other.

5. The diaphragm stack assembly according to any one of claims 1 to 4, characterized in that: The diaphragm stacking assembly also includes two guide rollers, which are arranged on the machine tool and located above the stacking table. The diaphragm is used to pass between the two guide rollers and is transmitted to the two translation mechanisms through the rotation of the two guide rollers.

6. The diaphragm stack assembly according to any one of claims 1 to 4, characterized in that: The diaphragm stacking assembly further includes a knife pressing mechanism, which is movably arranged on one side of the stacking platform and is used to press the diaphragm against the stacking platform.

7. The diaphragm stack assembly according to claim 6, wherein: There are four knife pressing mechanisms, which are arranged around the outer circumference of the lamination platform and are respectively used to press one side of the diaphragm against the lamination platform.

8. A battery cell stacking device, characterized in that: It comprises a machine tool, a diaphragm stacking assembly and a diaphragm conveying assembly according to any one of claims 1 to 7, wherein the diaphragm conveying assembly is arranged on the machine tool and located above the diaphragm stacking assembly, and the diaphragm conveying assembly is used to convey the diaphragm to the diaphragm stacking assembly.

9. The battery cell stacking device according to claim 8, characterized in that: The diaphragm conveying assembly includes an unwinding assembly and a tensioning assembly. The unwinding assembly is used to unwind the diaphragm and transfer the diaphragm to the tensioning assembly. The tensioning assembly is used to tension the diaphragm.

10. The battery cell stacking device according to claim 9, characterized in that: The diaphragm conveying assembly further comprises a rotary adsorption assembly, which is arranged between the unwinding assembly and the tensioning assembly and is used for adsorbing and transporting the diaphragm.

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