Film sticking device and film sticking method

Abstract

The present application relates to the field of battery manufacturing, and more specifically, to a film pasting device and a film pasting method. The film pasting device includes: an unwinding mechanism; a film clamping mechanism, the film clamping mechanism includes a clamping member, a first driving member and a second driving member both for driving the clamping member; a film pressing mechanism, the film pressing mechanism includes a third driving member and a pressure roller, and a cutter mechanism, the cutter mechanism includes a blade and a fourth driving member for driving the cutter. The first driving member and the second driving member can drive the clamping member to move in two directions; the clamping member can make the diaphragm fit with the battery cell, and the third driving member drives the pressure roller to smooth the diaphragm to avoid the formation of bubbles between the diaphragm and the battery cell. During the film pasting process, the second driving member and the third driving member are driven independently, which can control the film pasting process more flexibly and improve the film pasting efficiency.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing, and more specifically, to a film pasting device and a film pasting method. Background Art

[0002] The blue film comes in the form of a roll, and needs to be cut into pieces of a certain length, and then sucked by an adsorption mechanism, and attached to the bottom of the square battery. In actual use, because the action is complicated and discontinuous, it is easy to cause the cutting of the blue film to be offset, the adsorption of the blue film to be inaccurate, and the pasting position to be inaccurate; for the wider blue film, when the adsorption mechanism sucks the blue film piece and sticks it to the bottom of the square battery, it is easy to generate bubbles, the coating effect is not good, and the coating efficiency is affected. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a film pasting device and a method for pasting film on a battery cell, which aims to provide a device for pasting film on a battery to improve the film pasting efficiency.

[0004] A first aspect of the present application provides a film sticking device, the film sticking device comprising:

[0005] An unwinding mechanism, the unwinding mechanism is used to transport the film;

[0006] A film clamping mechanism, the film clamping mechanism comprising a clamping member, a first driving member and a second driving member both for driving the clamping member to move, the clamping member being used to clamp a film; the first driving member can drive the clamping member to move along a first direction so that the film is close to a film pasting starting point of a film pasting member to be pasted; the second driving member can drive the clamping member to move along the second direction so that the clamping member can be away from or close to a film pasting surface of the film pasting member to be pasted;

[0007] a film pressing mechanism, the film pressing mechanism comprising a third driving member and a pressing roller, the third driving member being capable of driving the pressing roller to move along the first direction so that the pressing roller abuts against the film sheet to make the film sheet fit with the object to be film-laminated; and

[0008] A cutter mechanism, the cutter mechanism comprising a blade and a fourth driving member for driving the cutter; the cutter is used to cut off the membrane.

[0009] The first driving member and the second driving member can drive the clamping member to move in two directions; the clamping member can make the film fit with the battery cell, and the third driving member drives the pressure roller to smooth the film to avoid bubbles between the film and the battery cell. During the film pasting process, the second driving member and the third driving member are driven independently, which can control the film pasting process more flexibly and improve the film pasting efficiency.

[0010] In some embodiments of the first aspect of the present application, the first direction and the second direction are perpendicular to each other.

[0011] In some embodiments of the first aspect of the present application, the fourth driving member and the second driving member are both connected to the first driving member, so that the first driving member can drive the fourth driving member and the second driving member to move.

[0012] In some embodiments of the first aspect of the present application, the clamping member includes a clamping head and a fifth driving member connected to the clamping head, and the fifth driving member is used to drive the clamping head to clamp the diaphragm or release the diaphragm.

[0013] In some embodiments of the first aspect of the present application, the fifth driving member is connected to the first driving member so that the first driving member can drive the fifth driving member to move.

[0014] In some embodiments of the first aspect of the present application, the chuck includes a moving part and a fixed part respectively used to abut against two sides of the diaphragm, and the fifth driving part is used to drive the moving part to approach or move away from the fixed part.

[0015] In some embodiments of the first aspect of the present application, the chuck includes two spaced apart fixing members;

[0016] The cutter is located between the two fixing members, and the fourth driving member is used to drive the cutter to move between the two fixing members to cut off the membrane.

[0017] In some embodiments of the first aspect of the present application, the unwinding mechanism includes a base, a floating roller, and a plurality of film-winding rollers, wherein the floating roller and the plurality of film-winding rollers are arranged at intervals along a moving direction of the film sheet, and the floating roller is located between the plurality of film-winding rollers;

[0018] The base is provided with a floating block, and the floating block is connected to the floating roller so that the floating roller can move along its radial direction.

[0019] The floating roller can adjust the tension of the film to avoid wrinkles on the film during the film pulling process.

[0020] In some embodiments of the first aspect of the present application, the floating block includes an elastic member, one end of the elastic member is connected to the base, and the other end is connected to the floating roller, and the elastic member can shrink along the radial direction of the floating roller.

[0021] A second aspect of the present application provides a film pasting method, which is applicable to the above-mentioned film pasting device; the film pasting method comprises:

[0022] The unwinding mechanism conveys the film, the clamping member clamps the end of the film, and the first driving member drives the clamping member to drive the film to move along the first direction so that the end of the film can be attached to the film-attached member;

[0023] The third driving member drives the pressing roller to press against the film sheet so that the film sheet is attached to the film-attached member;

[0024] The second driving member drives the clamping member to move away from the film-attached member; the fourth driving member drives the cutter to cut the film;

[0025] The third driving member drives the pressing roller again to press against the film sheet so that the film sheet is attached to the member to be attached. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic structural diagram of a film sticking device provided by an embodiment of the present application from a first viewing angle is shown;

[0028] Figure 2 A schematic structural diagram of a film sticking device provided by an embodiment of the present application at a second viewing angle is shown;

[0029] Figure 3 A schematic structural diagram of a film sticking device provided by an embodiment of the present application from a third viewing angle is shown;

[0030] Figure 4 A schematic diagram of the structure of the unwinding mechanism provided in an embodiment of the present application is shown;

[0031] Figure 5 A schematic structural diagram of a film clamping mechanism and a cutting mechanism provided in an embodiment of the present application is shown;

[0032] Figure 6 A schematic diagram of the structure of a clamping member provided in an embodiment of the present application is shown;

[0033] Figure 7 A schematic structural diagram of a film pressing mechanism provided in an embodiment of the present application is shown;

[0034] Figure 8 A schematic diagram showing the first two states of the film laminating process provided by an embodiment of the present application;

[0035] Fig. 9 A schematic diagram showing the last two states of the film laminating process provided in an embodiment of the present application.

[0036] Icons: 100-film laminating device; 101-battery cell; 102-diaphragm; 103-frame; 110-unwinding mechanism; 111-base; 112-inflation shaft; 113-floating roller; 114-film winding roller; 115-floating block; 120-film clamping mechanism; 121-clamping member; 1211-fifth driving member; 1212-moving member; 1213-fixed member; 122-first driving member; 123-second driving member; 130-film pressing mechanism; 131-third driving member; 132-pressing roller; 140-cutter mechanism; 141-blade; 142-fourth driving member. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the embodiments of the present application, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0042] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] Example

[0044] Figure 1 The structure diagram of the film sticking device 100 provided in the embodiment of the present application at the first viewing angle is shown. Figure 2 FIG. 1 shows a schematic structural diagram of a film sticking device 100 provided in an embodiment of the present application from a second viewing angle. Figure 3 The structure diagram of the film sticking device 100 provided in the embodiment of the present application at the third viewing angle is shown; please refer to Figure 1-Figure 3 The present embodiment provides a film pasting device 100, which is mainly used for pasting films on battery cells 101. It should be noted that in other embodiments of the present application, the film pasting device 100 can also be used for pasting films on other objects. The present application does not limit the objects to be pasted with films. The present embodiment describes the film pasting device 100 for pasting films on battery cells 101 as an example.

[0045] The film laminating device 100 mainly includes an unwinding mechanism 110 , a film clamping mechanism 120 , a film pressing mechanism 130 and a cutting mechanism 140 .

[0046] The unwinding mechanism 110 is used to convey the diaphragm 102; the film clamping mechanism 120, the film pressing mechanism 130 and the cutter mechanism 140 are all located at the downstream end of the diaphragm 102. The film clamping mechanism 120 is mainly used to clamp the diaphragm 102 so that the diaphragm 102 fits the battery cell 101. The film pressing mechanism 130 is mainly used to support and roll the diaphragm 102 so that the diaphragm 102 fits the battery cell 101 to avoid a gap between the two. The cutter mechanism 140 is mainly used to cut off the diaphragm 102.

[0047] Figure 4 FIG. 1 is a schematic diagram showing the structure of the unwinding mechanism 110 provided in the embodiment of the present application. Figure 4 The unwinding mechanism 110 includes a base 111, an air-inflating shaft 112, a floating roller 113 and a plurality of film-winding rollers 114. The air-inflating shaft 112, the floating roller 113 and the plurality of film-winding rollers 114 are all connected to the base 111. The floating roller 113 and the plurality of film-winding rollers 114 are arranged at intervals along the movement direction of the film 102.

[0048] The air shaft 112 is used to install the film roll, and the air shaft 112 is driven to rotate by the brake, and the brake provides a certain amount of power to the diaphragm 102 to form the tension of the film. The diaphragm 102 passes through the floating roller 113 and multiple film winding rollers 114 in sequence to reach the position where the battery cell 101 is located.

[0049] In this embodiment, a strip hole is provided at the position of the base 111 for installing the floating roller 113, and one end of the floating roller 113 extends into the strip hole. The base 111 is provided with a floating block 115, which is located on the side of the base 111 away from the diaphragm 102, and the floating block 115 is connected to one end of the floating roller 113. Under the tension of the diaphragm 102, the floating block 115 can make the floating roller 113 slide in the strip hole; after the cutter mechanism 140 cuts the diaphragm 102, the diaphragm 102 shrinks, and the floating roller 113 slides in the strip hole to reduce the retraction distance of the diaphragm 102; this is conducive to the film clamping mechanism 120 clamping the top of the diaphragm 102 again.

[0050] As an example, in this embodiment, the floating block 115 includes an elastic member, one end of the elastic member is connected to the base 111, and the other end is connected to the floating roller 113, and the elastic member can shrink along the radial direction of the floating roller 113. In the process of the diaphragm 102 moving forward, the floating roller 113 moves in the strip hole under the action of the diaphragm 102 and compresses the elastic member. After the diaphragm 102 is cut by the cutter mechanism 140, the diaphragm 102 moves backward, and the compressed elastic member drives the floating roller 113 to reset, slowing down the tendency of the diaphragm 102 to move backward, thereby reducing the retraction distance of the diaphragm 102.

[0051] In an embodiment of the present application, the elastic member is a spring. In other embodiments, the elastic member may be a member made of other elastic materials such as a rubber strip.

[0052] Alternatively, in other embodiments of the present application, the floating block 115 may be other structures, for example, the floating block 115 may be a pulling rope or other structures.

[0053] In this embodiment, the unwinding mechanism 110 is provided with one floating roller 113. It should be noted that in other embodiments of the present application, the unwinding mechanism 110 may also be provided with two, three or more floating rollers 113. Alternatively, in other embodiments of the present application, the unwinding mechanism 110 may not be provided with a floating roller 113.

[0054] Figure 5 FIG. 1 shows a schematic diagram of the structure of the film clamping mechanism 120 and the cutting mechanism 140 provided in the embodiment of the present application. Figure 5 The film clamping mechanism 120 includes a clamping member 121 , a first driving member 122 and a second driving member 123 , both of which are used to drive the clamping member 121 .

[0055] The first driving member 122 drives the clamping member 121 to move along the first direction, and the second driving member 123 drives the clamping member 121 to move along the second direction. The first direction and the second direction are perpendicular to each other. It can be understood that in other embodiments of the present application, the first direction and the second direction may not be perpendicular to each other, for example, the angle between the two may be 70-100°.

[0056] In this embodiment, the second driving member 123 is connected to the first driving member 122 . In other words, the first driving member 122 can drive the clamping member 121 and the second driving member 123 to move along the first direction.

[0057] In this embodiment, the cutter mechanism 140 is connected to the first driving member 122 , and the first driving member 122 can drive the cutter mechanism 140 to move along the first direction.

[0058] The main function of the clamping member 121 is to clamp or release the film 102, and the function of the first driving member 122 is to drive the clamping member 121 and the cutting mechanism 140 to move along the first direction; so that the clamping member 121 carries the film 102 to the film-applying surface of the battery cell 101; in other words, under the action of the first driving member 122, the clamping member 121 carries the film 102 to the end of the battery cell 101. After the film pressing mechanism 130 smoothes the film 102, the clamping member 121 releases the film 102, and the second driving member 123 drives the clamping member 121 and the cutting mechanism 140 to move along the second direction, so that the clamping member 121 can move away from or close to the film-applying surface of the battery cell 101; in other words, the movement of the clamping member 121 in the second direction allows the clamping member 121 to move away from or close to the battery cell 101 in a direction perpendicular to the film-applying surface.

[0059] The clamping member 121 and the cutter mechanism 140 are made to avoid the film pressing mechanism 130 , and then the first driving member 122 drives the clamping member 121 and the cutter mechanism 140 to move to the other end of the battery cell 101 , the cutter mechanism 140 cuts off the diaphragm 102 , and the film pressing mechanism 130 continues to smooth the diaphragm 102 .

[0060] In this embodiment, the first driving member 122 is a motor, and the second driving member 123 is a cylinder. As an example, the cylinder barrel of the cylinder is connected to the output end of the first driving member 122, and the piston rod of the cylinder can move relative to the first driving member 122; when the first driving member 122 outputs power, the entire cylinder can move in the first direction; after the cylinder outputs power, it can drive the clamping member 121 to move in the second direction.

[0061] It should be noted that, in other embodiments of the present application, the first driving member 122 may be a hydraulic cylinder, a pneumatic cylinder or other driving member, and the second driving member 123 may be a motor, a hydraulic cylinder or other driving member.

[0062] Figure 6The schematic diagram of the structure of the clamping member 121 provided in the embodiment of the present application is shown. Figure 5 and Figure 6 The clamping member 121 includes a clamping head and a fifth driving member 1211 for driving the clamping head. The fifth driving member 1211 is used to drive the clamping head to clamp the diaphragm 102 or release the diaphragm 102 .

[0063] In this embodiment, the fifth driving member 1211 is a cylinder, the cylinder barrel of the cylinder is connected to the output end of the first driving member 122, and the piston rod of the cylinder is connected to the chuck; after the first driving member 122 outputs power, the cylinder and the chuck both move along the first direction; after the cylinder outputs power, the chuck clamps the diaphragm 102 or releases the diaphragm 102.

[0064] It can be understood that in other embodiments of the present application, the fifth driving member 1211 can also be other drivers, such as a motor.

[0065] In this embodiment, the clamp includes a moving part 1212 and a fixed part 1213 . The moving part 1212 and the fixed part 1213 are respectively located on two sides of the diaphragm 102 and are respectively used to abut against two surfaces of the diaphragm 102 .

[0066] The fifth driving member 1211 is used to drive the moving member 1212 to approach or move away from the fixing member 1213 so as to clamp or release the diaphragm 102 .

[0067] As an example, the movable member 1212 is an L-shaped block, and the fixed member 1213 is a cylindrical shape; it can be understood that in other embodiments of the present application, the movable member 1212 and the fixed member 1213 can also be other shapes.

[0068] In this embodiment, the clamp includes two fixing members 1213 , which are arranged at an interval, and both of the two fixing members 1213 are used to abut against one side of the diaphragm 102 .

[0069] The cutting mechanism 140 includes a blade 141 and a fourth driving member 142. The fourth driving member 142 is used to drive the blade 141 to cut the diaphragm 102. In this embodiment, the blade 141 is located between two fixing members 1213. The fourth driving member 142 drives the blade 141 to move along the position where the fixing members 1213 contact the diaphragm 102 to cut the diaphragm 102.

[0070] It should be noted that in other embodiments of the present application, the chuck may include only one fixing member 1213, and the positional relationship between the blade 141 and the fixing member 1213 may also be other. For example, the blade 141 is on the upstream side of the fixing member 1213 close to the diaphragm 102, and the blade 141 can also cut off the diaphragm 102 under the action of the fourth driving member 142.

[0071] It should be noted that, in this embodiment, the cutter mechanism 140 is connected to the first driving member 122, and the output end of the first driving member 122 is connected to the fixed end of the cutter mechanism 140. After the first driving member 122 outputs power, the cutter mechanism 140 can move along the first direction together with the clamping member 121. It should be noted that, in other embodiments of the present application, the cutter mechanism 140 is independently provided and is not connected to the first driving member 122. For example, the cutter mechanism 140 is provided on one side of the battery cell 101. When the diaphragm 102 is attached to the battery cell 101, the fourth driving member 142 drives the blade 141 to cut the diaphragm 102.

[0072] As an example, in this embodiment, the fourth driving member 142 is a cylinder, the cylinder barrel of the cylinder is connected to the first driving member 122, and the piston rod of the cylinder can drive the blade 141 to move to cut off the diaphragm 102. In other embodiments of the present application, the fourth driving member 142 can also be other drivers such as a motor and a hydraulic cylinder.

[0073] In this embodiment, the fourth driving member 142 and the second driving member 123 are both connected to the first driving member 122; under the power of the first driving member 122, the second driving member 123 and the fourth driving member 142 can both move; under the action of the second driving member 123, the clamping member 121 can move again; under the action of the fourth driving member 142, the blade 141 can move again.

[0074] Figure 7 FIG. 1 is a schematic diagram showing the structure of the film pressing mechanism 130 provided in the embodiment of the present application. Figure 7 , the film pressing mechanism 130 includes a third driving member 131 and a pressure roller 132. The third driving member 131 can drive the pressure roller 132 to move along the first direction so that the diaphragm 102 fits the battery cell 101. In the present application, the pressure roller 132 is driven by a cylinder to move it close to or away from the battery cell 101. In other words, the pressure roller 132 adjusts the distance between it and the battery cell 101 through the cylinder, and then the pressure roller 132 is moved by the third driving member 131 so that the pressure roller 132 moves along the surface of the battery cell 101 to smooth the diaphragm 102. It should be noted that in other embodiments of the present application, the pressure roller 132 can also be adjusted by a motor to move it close to or away from the battery cell 101. In the present application, the pressure roller 132 is a rubber-coated roller, and the third driving member 131 is a motor; it should be noted that in other embodiments of the present application, the third driving member 131 can be other drivers such as a cylinder.

[0075] In the embodiment of the present application, the unwinding mechanism 110, the film clamping mechanism 120, the film pressing mechanism 130 and the cutting mechanism 140 are all installed on the frame 103. The frame 103 includes two layers. The unwinding mechanism 110 and the film pressing mechanism 130 are installed on one layer, and the film pressing mechanism 130 can move independently on the layer. The film clamping mechanism 120 and the cutting mechanism 140 are installed on another layer. The film clamping mechanism 120 and the cutting mechanism 140 can move independently relative to the film pressing mechanism 130, have good flexibility, and reduce the space occupied by the film sticking device 100.

[0076] The film sticking device 100 provided in the embodiment of the present application has at least the following advantages:

[0077] The first driving member 122 and the second driving member 123 can drive the clamping member 121 to move in two directions; the clamping member 121 can make the film 102 fit the battery cell 101, and the third driving member 131 drives the pressing roller 132 to smooth the film 102 to prevent bubbles from forming between the film 102 and the battery cell 101. During the film pasting process, the second driving member 123 and the third driving member 131 are driven independently, which can control the film pasting process more flexibly.

[0078] In addition, the floating roller 113 can adjust the tension of the film 102 to prevent the film 102 from wrinkling during the film pulling process.

[0079] The film pasting device 100 uses a rolled film 102, and the film 102 contacts the bottom of the battery in line-surface contact, avoiding the surface-to-surface contact of the overall film pasting by adsorption, avoiding the generation of bubbles, and achieving better effect.

[0080] The embodiment of the present application also provides a method for applying a film using the film applying device 100 .

[0081] Figure 8 A schematic diagram showing the first two states of the film laminating process provided by an embodiment of the present application is shown. Figure 8 The middle right picture shows the subsequent steps of the left picture. Fig. 9 A schematic diagram showing the last two states of the film laminating process provided by an embodiment of the present application; Fig. 9 The middle right picture shows the subsequent steps of the left picture. Fig. 9 The left picture in Figure 8 Next steps.

[0082] Figure 8 and Fig. 9 In the figure, the direction represented by x is the first direction, and the direction represented by y is the second direction.

[0083] Please refer to 1-9; the methods of applying the film include:

[0084] The first driving member 122 drives the clamping member 121 to a preset position, and the fifth driving member 1211 drives the clamp to clamp the diaphragm 102; the first driving member 122 drives the clamping member 121 to move and pull the film to a certain length, which is the bottom length of the battery cell 101, and the end of the diaphragm 102 is aligned with the side of the battery cell 101.

[0085] The third driving member 131 drives the pressing roller 132 to move back and forth, and rolls the diaphragm 102 to the bottom of the battery cell 101; the fifth driving member 1211 drives the clamp to release the diaphragm 102, and the second driving member 123 drives the clamping member 121 to move to avoid the film pressing mechanism 130; the first driving member 122 drives the clamping member to move to the other side of the battery cell 101, and the fourth driving member 142 is used to drive the blade 141 to cut the diaphragm 102; the second driving member 123 drives the clamping member to move to avoid the film pressing mechanism 130 again, and the third driving member 131 drives the pressing roller 132 to roll the diaphragm 102, and the film is pasted after the rolling is completed.

[0086] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A film sticking device, characterized in that: The film sticking device comprises: An unwinding mechanism, the unwinding mechanism is used to transport the film; The film clamping mechanism comprises a clamping member, a first driving member and a second driving member, both of which are used to drive the clamping member to move, the clamping member is used to clamp the film; the first driving member can drive the clamping member to move along a first direction so that the film is close to the film pasting starting point of the film pasting member; the second driving member can drive the clamping member to move along a second direction so that the clamping member can be away from or close to the film pasting surface of the film pasting member; a film pressing mechanism, the film pressing mechanism comprising a third driving member and a pressing roller, the third driving member being capable of driving the pressing roller to move along the first direction so that the pressing roller abuts against the film sheet to make the film sheet fit with the object to be film-laminated; and A cutter mechanism, the cutter mechanism comprising a blade and a fourth driving member for driving the cutter; the cutter is used to cut off the membrane; The fourth driving member and the second driving member are both connected to the first driving member, so that the first driving member can drive the fourth driving member and the second driving member to move.

2. The film sticking device according to claim 1, characterized in that: The first direction and the second direction are perpendicular to each other.

3. The film sticking device according to claim 1 or 2, characterized in that: The clamping member includes a clamping head and a fifth driving member connected to the clamping head, and the fifth driving member is used to drive the clamping head to clamp the diaphragm or release the diaphragm.

4. The film sticking device according to claim 3, characterized in that: The fifth driving member is connected to the first driving member so that the first driving member can drive the fifth driving member to move.

5. The film sticking device according to claim 3, characterized in that: The clamp comprises a moving part and a fixed part respectively used for abutting against two sides of the diaphragm, and the fifth driving part is used for driving the moving part to approach or move away from the fixed part.

6. The film sticking device according to claim 5, characterized in that: The chuck includes two spaced apart fixing members; The cutter is located between the two fixing members, and the fourth driving member is used to drive the cutter to move between the two fixing members to cut off the membrane.

7. The film sticking device according to claim 1 or 2, characterized in that: The unwinding mechanism includes a base, a floating roller and a plurality of film-winding rollers, wherein the floating roller and the plurality of film-winding rollers are arranged at intervals along the movement direction of the film sheet, and the floating roller is located between the plurality of film-winding rollers; the base is provided with a floating block, and the floating block is connected to the floating roller so that the floating roller can move along its radial direction.

8. The film sticking device according to claim 7, characterized in that: The floating block comprises an elastic member, one end of which is connected to the base, and the other end of which is connected to the floating roller. The elastic member can shrink along the radial direction of the floating roller.

9. A film-sticking method, characterized in that: The film sticking device is applicable to any one of claims 1 to 8; the film sticking method comprises: The unwinding mechanism conveys the film, the clamping member clamps the end of the film, and the first driving member drives the clamping member to drive the film to move along the first direction so that the end of the film can be attached to the film-attached member; The third driving member drives the pressing roller to press against the film sheet so that the film sheet is attached to the film-attached member; The second driving member drives the clamping member to move away from the film-attached member; the fourth driving member drives the cutter to cut the film; The third driving member drives the pressing roller again to press against the film sheet so that the film sheet is attached to the piece to be attached.

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