Unwinding mechanism of battery membrane staggered-layer winding machine

Abstract

The utility model relates to an unreeling mechanism of a battery membrane staggered-layer reeling machine, which comprises a rack, a moving plate horizontally and slidably mounted on the front side of the rack and two unreeling assemblies arranged on the moving plate, an electric cylinder for driving the moving plate to reciprocate is mounted on the rack, the number of the unreeling assemblies is two, and the two unreeling assemblies are oppositely arranged and can move along the horizontal direction. The unwinding assembly comprises an unwinding motor, a pressing disc and a base movably installed on the movable plate, and the pressing disc is rotatably installed on the base. A film pressing flat plate is arranged at the top of the rack, a connecting plate is hinged to the front end of the film pressing flat plate, an adhesive strip is arranged at the top of the connecting plate, and a plate turning cylinder for driving the connecting plate to rotate is arranged at the bottom of the film pressing flat plate; a material preparation frame is arranged on the front side of the machine frame and comprises a movable seat, and a gluing mechanism is arranged on the side, close to the machine frame, of the movable seat and comprises a sliding rod and a glue stick installation frame installed on the sliding rod in a sliding mode. The unwinding mechanism of the battery membrane staggered-layer winding machine facilitates membrane connecting operation, and is good in membrane connecting effect and high in efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery film production equipment technology, and in particular to an unwinding mechanism for a battery film staggered winding machine. Background Technology

[0002] In the structure of lithium batteries, the separator is one of the key internal components. Currently, after production, battery membranes need to be wound up. During winding, an end-face alignment method is used. Due to accumulated stress, the membrane roll may burst or scrape at the edges. To avoid this, existing technologies typically use a staggered unwinding machine for unwinding followed by winding. However, existing staggered winding mechanisms require replacing the original membrane roll during operation. To ensure continuous separator transport, the almost-unwound membrane roll is usually connected to the new membrane roll. Much of the current splicing process is done manually, which is not only inefficient but also results in poor adhesion. Utility Model Content

[0003] To overcome the technical defects of the existing technology, this utility model provides an unwinding mechanism for a battery film staggered winding machine, which has good film splicing effect and high efficiency.

[0004] The technical solution adopted by this utility model is: the unwinding mechanism of the battery film staggered winding machine, including a frame, a movable plate horizontally slidably installed on the front side of the frame, and an unwinding assembly provided on the movable plate. The frame is equipped with an electric cylinder that drives the movable plate to move back and forth. There are two sets of unwinding assemblies, which are arranged opposite to each other and can move in the horizontal direction. The unwinding assembly includes an unwinding motor, a pressure plate, and a base movably installed on the movable plate. The pressure plate is rotatably installed on the base, and the unwinding motor is provided on the base and drives the pressure plate to rotate.

[0005] The top of the frame is provided with a film pressing assembly, which includes a film pressing plate fixed to the frame and a pressure rod provided at the rear end of the film pressing plate. The bottom of the film pressing plate is provided with a film pressing cylinder for driving the pressure rod to rise and fall. The front end of the film pressing plate is hinged with a connecting plate. The top of the connecting plate is provided with an adhesive strip. The bottom of the film pressing plate is provided with a flipping cylinder for driving the connecting plate to rotate. A cutting device is provided on the frame below the front end of the film pressing plate.

[0006] The front side of the frame is provided with a material preparation rack, which includes a movable base. A bracket is mounted on the movable base in a height-adjustable manner. A lifting cylinder is provided at the bottom of the movable base to drive the bracket to move. A lifting frame is provided on the movable base on both sides of the bracket. A rotating shaft is rotatably mounted on the lifting frame and can move in the horizontal direction. A glue application mechanism is provided on the side of the movable base near the frame. The glue application mechanism includes a slide rod and a glue rod mounting bracket slidably mounted on the slide rod.

[0007] Preferably, the frame is provided with a mounting plate, the upper end of the mounting plate is hinged to the frame, and the frame is provided with feeding cylinders on both sides to drive the mounting plate to rotate. The moving plate and the electric cylinder are provided on the mounting plate.

[0008] Preferably, the movable plate has two sets of guide rails arranged horizontally, and the two bases are slidably mounted on the two sets of guide rails by sliders, with handles on the bases.

[0009] Preferably, the rotating shaft is provided with a rubber wheel that rolls in cooperation with the pressure plate.

[0010] Preferably, the cutting device includes a cutting track mounted on a frame and a slider slidably mounted on the cutting track. The slider is equipped with a cutting blade and a travel motor. The output end of the travel motor is provided with a travel gear. A rack that meshes with the travel gear is provided on the frame on one side of the cutting track.

[0011] Preferably, a flap cylinder is provided at each end of the connecting plate, the cylinder body of the flap cylinder is hinged to the pressure plate, and the piston rod of the flap cylinder is hinged to the connecting plate.

[0012] The beneficial effects of this utility model are as follows: the unwinding mechanism of the battery film staggered winding machine of this utility model can perform continuous staggered unwinding, which makes film splicing convenient and fast and has a good splicing effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the unwinding mechanism of a battery film staggered winding machine according to this utility model.

[0014] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1. Frame; 101. Moving plate; 102. Electric cylinder; 103. Base; 104. Unwinding motor; 105. Pressure plate; 106. Mounting plate; 107. Guide rail; 108. Feeding cylinder;

[0017] 2. Film pressing assembly; 201. Film pressing plate; 202. Pressing rod; 203. Film pressing cylinder; 204. Connecting plate; 205. Adhesive strip; 206. Flipping cylinder; 207. Cutting tool track; 208. Slider; 209. Cutting tool; 210. Travel motor; 211. Travel gear; 212. Rack;

[0018] 3. Material preparation rack; 301. Movable seat; 302. Lifting frame; 303. Lifting cylinder; 304. Rotary shaft; 305. Slide rod; 306. Glue rod mounting bracket. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figures 1 to 2 As shown, this embodiment provides an unwinding mechanism for a battery film staggered winding machine. The unwinding mechanism includes a frame 1, a movable plate 101 horizontally slidably mounted on the front side of the frame 1, and an unwinding assembly mounted on the movable plate 101. An electric cylinder 102 is mounted on the frame 1 to drive the movable plate 101 to reciprocate. There are two sets of unwinding assemblies, which are arranged opposite each other and can move horizontally. Each unwinding assembly includes an unwinding motor 104, a pressure plate 105, and a base 103 movably mounted on the movable plate 101. The pressure plate 105 is rotatably mounted on the base 103. The unwinding motor 104 is mounted on the base 103 and drives the pressure plate 105 to rotate. A film pressing assembly 2 is provided at the top of the frame 1. The film pressing assembly 2 includes a film pressing plate 201 fixed to the frame 1 and a pressure rod 202 located at the rear end of the film pressing plate 201. The bottom of the film pressing plate 201 is provided with a drive for the pressure rod. A lifting and lowering pressure-pressing cylinder 203 is provided. A connecting plate 204 is hinged to the front end of the pressure-pressing plate 201. An adhesive strip 205 is provided on the top of the connecting plate 204. A flip-plate cylinder 206 is provided at the bottom of the pressure-pressing plate 201 to drive the connecting plate 204 to rotate. A cutting device is provided on the frame 1 below the front end of the pressure-pressing plate 201. A material preparation rack 3 is provided on the front side of the frame 1. The material preparation rack 3 includes a movable base 301 on which a lifting and lowering mounting is provided. The support has a bracket, and the bottom of the movable seat 301 is provided with a lifting cylinder 303 to drive the bracket to move. A lifting frame 302 is provided on each of the movable seats 301 on both sides of the bracket. A rotating shaft 304 is rotatably mounted on the lifting frame 302, and the rotating shaft 304 can move in the horizontal direction. A glue application mechanism is provided on the side of the movable seat 301 near the frame 1. The glue application mechanism includes a slide rod 305 and a glue rod mounting bracket 306 slidably mounted on the slide rod 305.

[0021] In this embodiment, the frame 1 is provided with a mounting plate 106, the upper end of which is hinged to the frame 1. The frame 1 is provided with feeding cylinders 108 on both sides to drive the mounting plate 106 to rotate. The moving plate 101 and the electric cylinder 102 are provided on the mounting plate 106. When changing the film roll, the feeding cylinder 108 drives the mounting plate 106 to flip downward, reducing the height of the mounting frame and facilitating the replacement of the new film roll.

[0022] In this embodiment, two sets of guide rails 107 are horizontally arranged on the movable plate 101. The two bases 103 are slidably mounted on the two sets of guide rails 107 via sliders 208. The bases 103 have handles. When changing the film roll, the bases 103 are pulled to both sides to disengage the pressure plate 105 on them from the two ends of the film roll, so that the film roll can be removed. When installing a new film roll, the two bases 103 are pushed close together to press the film roll tightly.

[0023] In this embodiment, the cutting device includes a cutting track 207 mounted on a frame 1 and a slider 208 slidably mounted on the cutting track 207. A cutting blade 209 and a travel motor 210 are mounted on the slider 208. A travel gear 211 is provided at the output end of the travel motor 210. A rack 212 that meshes with the travel gear 211 is provided on the frame 1 on one side of the cutting track 207.

[0024] In this embodiment, a flap cylinder 206 is provided at each end of the connecting plate 204. The cylinder body of the flap cylinder 206 is hinged to the pressing plate 201, and the piston rod of the flap cylinder 206 is hinged to the connecting plate 204.

[0025] In this embodiment, the unwinding mechanism of the battery film staggered winding machine operates by having the electric cylinder 102 drive the moving plate 101 to swing back and forth horizontally, causing the output diaphragm to swing as well, resulting in staggered winding of the final film roll. When replacing a new film roll, the new film roll is installed on the material preparation rack 3. Specifically, the two ends of the new film roll are fitted onto the rotating shafts 304 on the two lifting frames 302. Then, the material preparation rack 3 is pushed to push the new film roll below the old film roll. Subsequently, the lifting frame 302 drives the new film roll to rise and abut against the old film roll. The rotating shaft 304 is equipped with a rubber wheel that rolls with the pressure plate 105. The rubber wheel abuts against the pressure plate 105, and an adhesive strip is left at the end of the new film roll by the sliding adhesive rod mounting bracket 306. Then, the pressure plate 105 drives the new film roll to rotate, so that the end of the new film roll is bonded to the old film roll. The old film roll drives the new film roll to move towards the film pressing assembly 2. When the end of the new film roll reaches or passes the pressure bar 202, the equipment stops conveying. The pressure bar cylinder 203 drives the pressure bar 202 to press the new film roll and the old film roll onto the pressure plate 201. Then, the flip plate cylinder 206 drives the connecting plate 204 to flip upward, so that the adhesive strip 205 adheres to the old film roll. Then, the connecting plate 204 flips downward, and the adhesive strip 205 drives the old film roll to separate from the new film roll, so that the old film roll and the cutting blade 209 travel along the same path. The travel motor 210 drives the cutting blade 209 to move, which can separate the old film roll from the new film roll. Finally, the old film roll is unloaded, the new film roll is installed on the unwinding assembly, the pressure bar 202 is raised, and the unwinding operation can continue. When changing the film roll, the new film roll should be kept free to rotate. The unwinding mechanism of the battery film staggered winding machine in this embodiment can perform continuous staggered unwinding, which is convenient and fast for film splicing and has a good splicing effect.

[0026] The foregoing has shown and described the basic principles and main features of this invention, as well as its advantages. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. The unwinding mechanism of a battery film staggered winding machine, characterized in that: The device includes a frame, a movable plate that is horizontally slidably mounted on the front side of the frame, and an unwinding assembly mounted on the movable plate. An electric cylinder that drives the movable plate to reciprocate is mounted on the frame. There are two sets of unwinding assemblies, which are arranged opposite to each other and can move in the horizontal direction. Each unwinding assembly includes an unwinding motor, a pressure plate, and a base that is movably mounted on the movable plate. The pressure plate is rotatably mounted on the base, and the unwinding motor is mounted on the base and drives the pressure plate to rotate. The top of the frame is provided with a film pressing assembly, which includes a film pressing plate fixed to the frame and a pressure rod provided at the rear end of the film pressing plate. The bottom of the film pressing plate is provided with a film pressing cylinder for driving the pressure rod to rise and fall. The front end of the film pressing plate is hinged with a connecting plate. The top of the connecting plate is provided with an adhesive strip. The bottom of the film pressing plate is provided with a flipping cylinder for driving the connecting plate to rotate. A cutting device is provided on the frame below the front end of the film pressing plate. The front side of the frame is provided with a material preparation rack, which includes a movable base. A bracket is mounted on the movable base in a height-adjustable manner. A lifting cylinder is provided at the bottom of the movable base to drive the bracket to move. A lifting frame is provided on the movable base on both sides of the bracket. A rotating shaft is rotatably mounted on the lifting frame and can move in the horizontal direction. A glue application mechanism is provided on the side of the movable base near the frame. The glue application mechanism includes a slide rod and a glue rod mounting bracket slidably mounted on the slide rod.

2. The unwinding mechanism of the battery film staggered winding machine according to claim 1, characterized in that: The frame is provided with a mounting plate, the upper end of which is hinged to the frame. The frame is provided with feeding cylinders on both sides to drive the mounting plate to rotate. The moving plate and electric cylinder are located on the mounting plate.

3. The unwinding mechanism of the battery film staggered winding machine according to claim 1, characterized in that: The movable plate has two sets of guide rails arranged horizontally, and the two bases are slidably mounted on the two sets of guide rails by sliders. The bases have handles.

4. The unwinding mechanism of the battery film staggered winding machine according to claim 1, characterized in that: The rotating shaft is equipped with a rubber wheel that rolls in cooperation with the pressure plate.

5. The unwinding mechanism of the battery film staggered winding machine according to claim 1, characterized in that: The cutting device includes a cutting track mounted on a frame and a slider slidably mounted on the cutting track. The slider is equipped with a cutting blade and a travel motor. The output end of the travel motor is equipped with a travel gear. A rack that meshes with the travel gear is provided on the frame on one side of the cutting track.

6. The unwinding mechanism of the battery film staggered winding machine according to claim 1, characterized in that: A flip-plate cylinder is provided at each end of the connecting plate. The cylinder body of the flip-plate cylinder is hinged to the pressure plate, and the piston rod of the flip-plate cylinder is hinged to the connecting plate.

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