Battery pack film device

Abstract

This utility model relates to the field of battery manufacturing technology and discloses a battery coating device, including a base, an unwinding mechanism, a positioning and cutting mechanism, and a coating mechanism. The unwinding mechanism and the positioning and cutting mechanism are spaced apart on the base along a first direction. The positioning and cutting mechanism includes a positioning block, a sliding bracket, and a cutter. The positioning block is used to position the battery. The coating mechanism is slidably mounted on the base along the first direction for attaching the film material to the battery surface. The upper surface of the positioning block has a first clearance groove extending along a second direction. The cutter is mounted on the sliding bracket and extends into the first clearance groove. The sliding bracket is connected to the positioning block and can drive the cutter to slide along the length direction of the first clearance groove. The first and second directions are parallel to the horizontal plane and perpendicular to each other. This utility model can hide part of the cutter, reducing the risk of injury to operators. This utility model can improve battery coating efficiency, has strong compatibility, a compact structure, and low cost.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a battery coating device. Background Technology

[0002] Before assembling modules, batteries need to be coated. Coating requires that the battery surface be free of air bubbles. If air bubbles are present, it will lead to poor battery thickness consistency, causing misalignment during the subsequent soldering process when assembling the modules.

[0003] Currently, the lithium battery coating process generally uses a positioning structure to position the lithium battery, and then the coating and edge cutting are done manually. Most of the cutting blades are exposed, which poses a safety hazard to the coating workers during the coating process. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a battery packing device that can hide part of the cutting blade, thereby reducing the risk of injury to the operator.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A battery coating device is provided, comprising a base, an unwinding mechanism, a positioning and cutting mechanism, and a coating mechanism. The unwinding mechanism and the positioning and cutting mechanism are spaced apart on the base along a first direction. The positioning and cutting mechanism includes a positioning block, a sliding bracket, and a cutter. The positioning block is used to position the battery. The coating mechanism is slidably disposed on the base along the first direction for attaching the coating material to the surface of the battery. The upper surface of the positioning block is provided with a first clearance groove extending along a second direction. The cutter is mounted on the sliding bracket and extends into the first clearance groove. The sliding bracket is connected to the positioning block and can drive the cutter to slide along the length direction of the first clearance groove. The first direction and the second direction are parallel to the horizontal plane and perpendicular to each other.

[0007] As a further embodiment of the battery pack film device, the sliding bracket includes a first bracket, a first slide rail and a first slider, the cutter is mounted on the first bracket, the first bracket is connected to the first slider, and the first slider is slidably engaged with the first slide rail.

[0008] The positioning block has a first side facing the unwinding mechanism and a second side opposite to the first side along the first direction. The first side is provided with a positioning groove for positioning the battery. The positioning groove passes through the positioning block along a third direction. The second side is equipped with the first slide rail. The first direction, the second direction and the third direction are perpendicular to each other.

[0009] As a further embodiment of the battery pack film device, the positioning groove penetrates the positioning block along a third direction, a second clearance groove is provided at the corner of the positioning groove to avoid the corner of the battery, and a third clearance groove is provided at the bottom of the positioning groove to avoid the terminal post of the battery.

[0010] As a further embodiment of the battery packing device, the first bracket includes a horizontal portion and a first vertical portion and a second vertical portion spaced apart along a first direction. The horizontal portion is connected to the upper ends of the first vertical portion and the second vertical portion. The first vertical portion is fixedly connected to the first slider. The second vertical portion is located above the positioning block. The cutter is mounted on the second vertical portion.

[0011] As a further embodiment of the battery pack film device, the positioning and cutting mechanism further includes a handle, which is mounted on the horizontal part.

[0012] As a further embodiment of the battery pack film device, a clamping mechanism is also included. The clamping mechanism is mounted on the base and is located on the side of the positioning block opposite to the unwinding mechanism along the first direction, for clamping the battery against the positioning groove.

[0013] As a further embodiment of the battery pack film device, the clamping mechanism includes a fixed part, a movable part, and an elastic part. The fixed part is fixed on the base, and the movable part is located on the side of the fixed part facing the positioning block. The movable part is connected to the fixed part through the elastic part, and the elastic part causes the movable part to always have a tendency to move towards the positioning block.

[0014] As a further embodiment of the battery pack device, the elastic part includes two screws and two springs. The movable part has two through holes that penetrate the movable part along the first direction. The two through holes are spaced apart along the second direction. The screws, the springs, and the through holes correspond one-to-one. The screws pass through the through holes and are threadedly connected to the fixed part. The springs are sleeved on the outer periphery of the screws. One end of the spring along the first direction abuts against the fixed part, and the other end abuts against the movable part.

[0015] As a further embodiment of the battery coating device, the coating mechanism includes a coating roller, a crossbeam, two second supports, two second slide rails, and two second sliders. A second slide rail is mounted on each side of the base along the second direction, and the length of the second slide rail extends along the first direction. Each second support is slidably connected to the second slide rail via a second slider. The crossbeam is connected to the two second supports at both ends along the second direction. The coating roller is mounted below the crossbeam via a fixed base, and the coating roller is rotatably connected to the fixed base. The rotation axis of the coating roller extends along the second direction.

[0016] The unwinding mechanism includes an unwinding roller and two third supports. The two third supports are fixed on both sides of the base along the second direction. The two ends of the unwinding roller along the second direction are connected to the third supports. The rotation axis of the unwinding roller extends along the second direction.

[0017] As a further embodiment of the battery pack film device, a film pressing mechanism is also included. The film pressing mechanism is located between the unwinding mechanism and the positioning and cutting mechanism. The film pressing mechanism includes a film pressing roller and two fourth supports. The two fourth supports are fixed on both sides of the base along the second direction. The film pressing roller is mounted on the fourth supports and rotates with the fourth supports. The rotation axis of the film pressing roller extends along the second direction.

[0018] Beneficial effects:

[0019] In this invention, a film material is wound on an unwinding mechanism. The film material is pulled to the upper surface of the battery after being positioned by a positioning block. The film material is then pressed firmly against the battery surface by a wrapping mechanism moving along the first direction. A sliding bracket is then pushed to drive a cutter to cut the film material, completing the wrapping operation on the corresponding side of the battery. Compared with existing technologies, the positioning block of this invention can both position the battery and serve as a carrier for mounting the sliding bracket. The cutter is mounted on the sliding bracket, and pushing the sliding bracket along the second direction cuts the film material. During the movement of the cutter, it slides along the first clearance groove on the positioning block, which can partially conceal the cutter, reducing the risk of injury to the operator and solving the problem of uneven film material cutting.

[0020] The battery packing device of this invention can greatly improve battery packing efficiency, and has strong compatibility, compact structure and low cost. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the battery pack membrane device described in an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0024] Figure 3 This is a schematic diagram of the positioning and cutting mechanism described in an embodiment of the present invention.

[0025] In the picture:

[0026] 1. Battery; 2. Membrane material;

[0027] 100. Base; 200. Unwinding mechanism; 210. Unwinding roller; 211. Roller shaft; 212. Bushing; 213. Bearing; 220. Third support; 221. Groove; 300. Positioning and cutting mechanism; 310. Positioning block; 311. First clearance groove; 312. Positioning groove; 313. Second clearance groove; 314. Third clearance groove; 320. Sliding support; 321. First support; 3211. First vertical part; 3212. Second vertical part; 32121. Connecting hole; 3213. Horizontal 322, First slide rail; 323, First slider; 330, Cutter; 331, Adjustment elongated hole; 340, Handle; 400, Coating mechanism; 410, Coating roller; 420, Crossbeam; 430, Second bracket; 440, Second slide rail; 450, Second slider; 460, Fixed seat; 500, Pressing mechanism; 510, Fixed part; 520, Movable part; 530, Elastic part; 531, Screw; 532, Spring; 600, Pressing mechanism; 610, Pressing roller; 620, Fourth bracket. Detailed Implementation

[0028] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationships shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or component 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. Furthermore, the terms "first," "second," etc., are merely used for distinction in description and have no special meaning.

[0032] like Figures 1 to 3 As shown, this embodiment provides a battery coating device, including a base 100, an unwinding mechanism 200, a positioning and cutting mechanism 300, and a coating mechanism 400. The unwinding mechanism 200 and the positioning and cutting mechanism 300 are spaced apart on the base 100 along a first direction. The positioning and cutting mechanism 300 includes a positioning block 310, a sliding bracket 320, and a cutter 330. The positioning block 310 is used to position the battery 1. The coating mechanism 400 is slidably disposed on the base 100 along the first direction and is used to attach the film material 2 to the surface of the battery 1. The upper surface of the positioning block 310 is provided with a first clearance groove 311 extending along a second direction. The cutter 330 is mounted on the sliding bracket 320 and extends into the first clearance groove 311. The sliding bracket 320 is connected to the positioning block 310. The sliding bracket 320 can drive the cutter 330 to slide along the length direction of the first clearance groove 311. The first direction and the second direction are parallel to the horizontal plane and perpendicular to each other.

[0033] In this embodiment, the length of the base 100 extends along a first direction (X direction in the figure), the width extends along a second direction (Y direction in the figure), and the thickness extends along a third direction (Z direction in the figure).

[0034] Understandably, the unwinding mechanism 200 winds a film material 2 (blue film). The film material 2 is pulled to the upper surface of the battery 1 after being positioned by the positioning block 310. The film material 2 is then pressed tightly against the surface of the battery 1 by the movement of the wrapping mechanism 400 along the first direction. Then, the sliding bracket 320 is pushed to drive the cutter 330 to cut the film material 2, completing the wrapping operation on the corresponding side of the battery 1. Compared with the prior art, the positioning block 310 in this embodiment can be used to position the battery 1 and also serve as a carrier for mounting the sliding bracket 320. The cutter 330 is mounted on the sliding bracket 320. Pushing the sliding bracket 320 along the second direction can cut the film material 2. During the movement of the cutter 330, it slides along the first clearance groove 311 on the positioning block 310, reducing the risk of injury to the operator and solving the problem of uneven cutting of the film material 2.

[0035] Furthermore, the sliding bracket 320 includes a first bracket 321, a first slide rail 322, and a first slider 323. The cutter 330 is mounted on the first bracket 321. The first bracket 321 is connected to the first slider 323, and the first slider 323 is slidably engaged with the first slide rail 322. The positioning block 310 has a first side facing the unwinding mechanism 200 and a second side opposite to the first side along a first direction. The first side is provided with a positioning groove 312 for positioning the battery 1. The positioning groove 312 penetrates the positioning block 310 along a third direction. The second side is equipped with the first slide rail 322. The first direction, the second direction, and the third direction are perpendicular to each other.

[0036] In this embodiment, the positioning groove 312 is designed on the side of the positioning block 310 facing the unwinding mechanism 200, while the first slide rail 322 is designed on the side of the positioning block 310 away from the positioning groove 312, which makes the structure of the entire positioning and cutting mechanism 300 more compact.

[0037] For example, such as Figure 2 As shown, the first bracket 321 includes a first vertical portion 3211, a second vertical portion 3212, and a horizontal portion 3213 connected to the upper ends of the first vertical portion 3211 and the second vertical portion 3212, which are spaced apart along a first direction. The first vertical portion 3211 is fixedly connected to the first slider 323. The cutter 330 is installed on one side of the second vertical portion 3212 along the first direction. The horizontal portion 3213 allows the cutter 330 installed on the second vertical portion 3212 to be positioned directly above the positioning block 310 and the lower end of the cutter 330 to be inserted into the first clearance groove 311.

[0038] Furthermore, the cutter 330 is fixed to the second vertical part 3212 by bolts (not shown in the figure). The cutter 330 has an adjustment elongated hole 331 extending through it in the first direction. The second vertical part 3212 has two connecting holes 32121. The bolt passes through the adjustment elongated hole 331 and is threaded into the connecting holes 32121. By tightening the bolt, the cutter 330 can be fixed to the second vertical part 3212.

[0039] To prevent the first slider 323 from separating from the first slide rail 322, this embodiment also provides a limiting block (not shown in the figure) at each end of the first slide rail 322 along the second direction. The limiting block protrudes from the side of the first slide rail 322 and can selectively contact the first slider 323 to limit the first slider 323.

[0040] Furthermore, such as Figure 3 As shown, a second clearance groove 313 is provided at the corner of the positioning groove 312 to avoid the corner of the battery 1, and a third clearance groove 314 is provided at the bottom of the positioning groove 312 to avoid the terminal post of the battery 1.

[0041] In this embodiment, the bottom of the positioning groove 312 is the bottom surface directly opposite the groove opening. By designing a third clearance groove 314 at the bottom of the positioning groove 312, a positioning step is formed at the bottom of the positioning groove 312. When the battery 1 is in positioning contact with the limiting step, the terminal of the battery 1 is located within the third clearance groove 314. The second clearance groove 313 provided at the corner of the positioning groove 312 can provide clearance space for the corner of the battery 1 (slightly protruding) to quickly realize the positioning operation of the battery 1.

[0042] Furthermore, to prevent the battery 1 from slightly wobbling along the first direction during the coating process and affecting the coating effect, this embodiment also adds a clamping mechanism 500, which clamps the battery 1 firmly within the positioning groove 312 of the positioning block 310. Figure 1 As shown, in this embodiment, the clamping mechanism 500 is mounted on the base 100. The clamping mechanism 500 is located on the side of the positioning block 310 away from the unwinding mechanism 200 along the first direction, and is used to clamp the battery 1 into the positioning groove 312. The battery coating device of this embodiment can adapt to the positioning and coating processing of batteries 1 of various sizes, solving the problems of poor coating compatibility and difficulty in changing the type.

[0043] Specifically, the clamping mechanism 500 includes a fixed part 510, a movable part 520, and an elastic part 530. The fixed part 510 is fixed on the base 100, and the movable part 520 is located on the side of the fixed part 510 facing the positioning block 310. The movable part 520 is connected to the fixed part 510 through the elastic part 530, and the elastic part 530 makes the movable part 520 always have a tendency to move toward the positioning block 310.

[0044] In this embodiment, when the movable part 520 is squeezed by the battery 1, it will overcome the elastic force of the elastic part 530 and move toward the fixed block. The elastic part 530 makes the movable part 520 always abut against the battery 1, thereby pressing the battery 1 firmly in the positioning groove 312.

[0045] Furthermore, the elastic part 530 includes two screws 531 and two springs 532. The movable part 520 is provided with two through holes (not shown in the figure) that pass through the movable part 520 along a first direction. The two through holes are spaced apart along a second direction. The screws 531, springs 532 and through holes correspond one to one. The screws 531 pass through the through holes and are threadedly connected to the fixed part 510. The springs 532 are sleeved on the outer periphery of the screws 531. One end of the springs 532 along the first direction abuts against the fixed part 510, and the other end abuts against the movable part 520.

[0046] The screw 531 passes through a hole in the movable part 520, allowing the movable part 520 to move along the length of the screw 531. Before positioning the battery 1, the movable part 520 and the spring 532 are in their initial state; when the movable part 520 is compressed by the battery 1, the spring 532 is further compressed by the movable part 520. This embodiment improves the movement stability of the movable part 520 by providing two screws 531 and two springs 532, with the two screws 531 spaced apart along the second direction.

[0047] To improve the convenience of cutting the film material 2 with the cutter 330 and further enhance the safety of the cutting edge, the positioning and cutting mechanism 300 of this embodiment also includes a handle 340. The handle 340 is installed on the horizontal part 3213. The operator holds the handle 340 and pushes the first bracket 321 in the second direction to achieve the cutting of the film material 2.

[0048] In this embodiment, the coating mechanism 400 includes a coating roller 410, a crossbeam 420, two second supports 430, two second slide rails 440, and two second sliders 450. A second slide rail 440 is installed on each side of the base 100 along the second direction. The length of the second slide rail 440 extends along the first direction. Each second support 430 is slidably connected to the second slide rail 440 through a second slider 450. The two ends of the crossbeam 420 along the second direction are connected to the two second supports 430. The coating roller 410 is installed below the crossbeam 420 through a fixed seat 460. The coating roller 410 is rotatably connected to the fixed seat 460. The rotation axis of the coating roller 410 extends along the second direction.

[0049] The fixing seat 460 is located below the crossbeam 420. The fixing seat 460 is a groove-shaped structure composed of a base plate and two side plates. The base plate is fixed on the lower surface of the crossbeam 420. The coating roller 410 is located below the base plate. The two ends of the coating roller 410 are rotatably connected to the two side plates. When the crossbeam 420 is pushed along the first direction, the coating roller 410 rolls the film material 2 on the upper surface of the battery 1, thereby squeezing out the air bubbles between the film material 2 and the surface of the battery 1 and improving the coating effect.

[0050] Furthermore, the unwinding mechanism 200 includes an unwinding roller 210 and two third supports 220. The two third supports 220 are fixed to both sides of the base 100 along the second direction. The two ends of the unwinding roller 210 along the second direction are connected to the third supports 220, and the rotation axis of the unwinding roller 210 extends along the second direction. The film material 2 is wound on the unwinding roller 210. When the film material 2 is pulled, the film material 2 drives the unwinding roller 210 to rotate to achieve unwinding.

[0051] Specifically, the upper end of the third support 220 is provided with a groove 221. The unwinding roller 210 includes a roller shaft 211, a bushing 212 and a bearing 213. The bushing 212 is rotatably connected to the roller shaft 211 through the bearing 213. The film material 2 is wound on the bushing 212. The two ends of the roller shaft 211 along the second direction can be inserted into and fixed in the corresponding grooves 221.

[0052] In this embodiment, the battery packing device further includes a pressing mechanism 600, which is located between the unwinding mechanism 200 and the positioning and cutting mechanism 300. The pressing mechanism 600 includes a pressing roller 610 and two fourth supports 620. The two fourth supports 620 are fixed on both sides of the base 100 along the second direction. The pressing roller 610 is mounted on the fourth supports 620 and rotates with the fourth supports 620. The rotation axis of the pressing roller 610 extends along the second direction.

[0053] The film material 2 released by the unwinding mechanism 200 passes over the underside of the pressure roller 610 and then passes through the underside of the wrapping roller 410 of the wrapping mechanism 400 to be attached to the surface of the battery 1. The pressure roller 610 can improve the film application accuracy.

[0054] The battery packing device of this embodiment can greatly improve the packing efficiency of battery 1, and has strong compatibility, compact structure and low cost.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery pack film device, characterized by, The device includes a base, an unwinding mechanism, a positioning and cutting mechanism, and a coating mechanism. The unwinding mechanism and the positioning and cutting mechanism are spaced apart on the base along a first direction. The positioning and cutting mechanism includes a positioning block, a sliding bracket, and a cutter. The positioning block is used to position the battery. The coating mechanism is slidably disposed on the base along the first direction and is used to attach the coating material to the surface of the battery. The upper surface of the positioning block is provided with a first clearance groove extending along a second direction. The cutter is mounted on the sliding bracket and extends into the first clearance groove. The sliding bracket is connected to the positioning block and can drive the cutter to slide along the length direction of the first clearance groove. The first direction and the second direction are parallel to the horizontal plane and perpendicular to each other.

2. The battery pack film device of claim 1, wherein, The sliding bracket includes a first bracket, a first slide rail, and a first slider. The cutter is mounted on the first bracket, the first bracket is connected to the first slider, and the first slider slides in cooperation with the first slide rail. The positioning block has a first side facing the unwinding mechanism and a second side opposite to the first side along the first direction. The first side is provided with a positioning groove for positioning the battery. The positioning groove passes through the positioning block along a third direction. The second side is equipped with the first slide rail. The first direction, the second direction and the third direction are perpendicular to each other.

3. The battery pack film device of claim 2, wherein, The positioning groove penetrates the positioning block in a third direction. A second clearance groove is provided at the corner of the positioning groove to avoid the corner of the battery. A third clearance groove is provided at the bottom of the positioning groove to avoid the terminal post of the battery.

4. The battery pack film device of claim 2, wherein, The first bracket includes a horizontal portion and a first vertical portion and a second vertical portion spaced apart along a first direction. The horizontal portion is connected to the upper ends of the first vertical portion and the second vertical portion. The first vertical portion is fixedly connected to the first slider. The second vertical portion is located above the positioning block. The cutter is mounted on the second vertical portion.

5. The battery pack film device of claim 4, wherein, The positioning and cutting mechanism also includes a handle, which is mounted on the horizontal part.

6. The battery packing device according to claim 2, characterized in that, It also includes a clamping mechanism, which is mounted on the base and located on the side of the positioning block away from the unwinding mechanism along the first direction, for clamping the battery against the positioning groove.

7. The battery pack film device of claim 6, wherein, The clamping mechanism includes a fixed part, a movable part, and an elastic part. The fixed part is fixed on the base, and the movable part is located on the side of the fixed part facing the positioning block. The movable part is connected to the fixed part through the elastic part, and the elastic part makes the movable part always tend to move towards the positioning block.

8. The battery pack film device of claim 7, wherein, The elastic part includes two screws and two springs. The movable part has two through holes that penetrate the movable part along the first direction. The two through holes are spaced apart along the second direction. The screws, springs and through holes correspond one-to-one. The screws pass through the through holes and are threadedly connected to the fixed part. The springs are sleeved on the outer circumference of the screws. One end of the spring along the first direction abuts against the fixed part, and the other end abuts against the movable part.

9. The battery pack film device of any one of claims 1 to 8, wherein, The coating mechanism includes a coating roller, a crossbeam, two second supports, two second slide rails, and two second sliders. A second slide rail is installed on each side of the base along the second direction. The length of the second slide rail extends along the first direction. Each second support is slidably connected to the second slide rail via a second slider. The two ends of the crossbeam along the second direction are connected to the two second supports. The coating roller is installed below the crossbeam via a fixed seat. The coating roller is rotatably connected to the fixed seat. The rotation axis of the coating roller extends along the second direction. The unwinding mechanism includes an unwinding roller and two third supports. The two third supports are fixed on both sides of the base along the second direction. The two ends of the unwinding roller along the second direction are connected to the third supports. The rotation axis of the unwinding roller extends along the second direction.

10. The battery pack film device of any one of claims 1 to 8, wherein, It also includes a film pressing mechanism, which is located between the unwinding mechanism and the positioning and cutting mechanism. The film pressing mechanism includes a film pressing roller and two fourth supports. The two fourth supports are fixed on both sides of the base along the second direction. The film pressing roller is mounted on the fourth supports and rotates with the fourth supports. The rotation axis of the film pressing roller extends along the second direction.

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