A pay-off device

Abstract

This utility model discloses an unwinding device, including two opposing base frames, a tilting frame, a first unwinding mechanism, a second unwinding mechanism, and two opposing tilting shafts. The tilting frame is located between the two base frames. The first and second unwinding mechanisms are both mounted on the tilting frame and are distributed vertically at intervals. The two tilting shafts are rotatably mounted on the tops of the two base frames, with one end of each shaft connected to a side of the tilting frame. The device also includes a flat-push cutting mechanism located on one side of the tilting frame. The flat-push cutting mechanism is located inside the two base frames, with a portion protruding from one end of each base frame. The flat-push cutting mechanism includes two opposing mounting plates, two opposing mounting brackets, a flat-push drive assembly, and a cutting assembly. This utility model improves space utilization and reduces production costs.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, specifically to an unwinding device. Background Technology

[0002] The unwinding device of an existing lithium battery production line generally includes two base frames arranged opposite each other, a flipping frame, a first unwinding mechanism, a second unwinding mechanism, and two flipping shafts arranged opposite each other. The flipping frame is located between the two base frames. The first unwinding mechanism and the second unwinding mechanism are both set on the flipping frame and are distributed vertically at intervals. The two flipping shafts are respectively rotatably set at the top of the two base frames, and one end of the two flipping shafts is respectively connected to the two sides of the flipping frame. The first and second unwinding mechanisms are used to install the material rolls and unwind the substrate of the material rolls, respectively. In practical applications, the substrate of the material roll on the first unwinding mechanism is unwound first. When the substrate of the material roll on the first unwinding mechanism is almost unwound, the cutting device located on one side of the unwinding device of the lithium battery production line presses the substrate unwound by the first unwinding mechanism onto the adhesive part of the material roll on the second unwinding mechanism to bond the substrate and the material roll of the second unwinding mechanism together. Then, the cutting device cuts the substrate unwound by the first unwinding mechanism. Then, the two flipping shafts drive the flipping frame, the first unwinding mechanism and the second unwinding mechanism to rotate 180 degrees, so that the upper and lower positions of the first unwinding mechanism and the second unwinding mechanism are reversed. At this time, the second unwinding mechanism is above the first unwinding mechanism. Then, the substrate of the material roll on the second unwinding mechanism can be unwound. When the substrate of the material roll on the second unwinding mechanism is almost unwound, the above steps are repeated. This process is repeated to achieve automatic roll changing and splicing.

[0003] Because the unwinding device and the cutting device are two separate devices, the lithium battery production line is relatively large in size, occupies a lot of space, reduces space utilization, and has a relatively high production cost. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an unwinding device that can reduce the volume of lithium battery production lines, occupy less space, improve space utilization, and reduce production costs.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An unwinding device includes two opposing base frames, a tilting frame, a first unwinding mechanism, a second unwinding mechanism, and two opposing tilting shafts. The tilting frame is located between the two base frames. The first and second unwinding mechanisms are both mounted on the tilting frame and are spaced vertically apart. The two tilting shafts are rotatably mounted on the tops of the two base frames, and one end of each shaft is connected to a side of the tilting frame. The device also includes a flat-push cutter mechanism located on one side of the tilting frame. The flat-push cutter mechanism is positioned inside the two base frames, with a portion protruding from the two base frames. At one end, the flat-push cutting mechanism includes two mounting plates arranged opposite each other, two mounting brackets arranged opposite each other, a flat-push drive assembly, and a cutting assembly. The two mounting plates are located on one side of the flipping frame. The two mounting plates are respectively disposed inside the two base frames, and the two mounting plates protrude from one end of the two base frames. One end of the two mounting brackets is slidably disposed inside the two mounting plates. The cutting assembly is disposed between the other ends of the two mounting brackets. The flat-push drive assembly is used to drive the two mounting brackets to move toward or away from the flipping frame. The cutting assembly corresponds to the second unwinding mechanism.

[0007] As a preferred technical solution, the cutter assembly includes two opposing fixed plates and a pressure roller structure. The two fixed plates are respectively located at the other end of two mounting brackets, and the two fixed plates are connected by a fixed plate crossbeam. The pressure roller structure includes two opposing pressure roller connecting shafts, two opposing pressure roller swing arms, a pressure roller, and two pressure roller cylinders. One end of each of the two pressure roller connecting shafts is located inside the two fixed plates. The two pressure roller swing arms are located between the two fixed plates and are rotatably sleeved on the two pressure roller connecting shafts. The pressure roller is located above the two pressure roller connecting shafts, and both ends of the pressure roller are rotatably located at the first ends of the two pressure roller swing arms. The pressure roller corresponds to the second unwinding mechanism. The two pressure roller cylinders are respectively located inside the two fixed plates, and the output ends of the two pressure roller cylinders are rotatably connected to the second ends of the two pressure roller swing arms.

[0008] As a preferred technical solution, the cutter assembly further includes a cutter structure located above the pressure roller structure. The cutter structure includes a cutter base plate, two oppositely arranged cutter seats, a cutter, a cutter shaft, and a rotary cylinder. The cutter base plate is located above the pressure roller and is inclined downwards. The first ends of the two cutter seats are respectively located at the top of the cutter base plate. The cutter is located at the top of the cutter base plate and between the two cutter seats. The cutting edge of the cutter protrudes from the side of the cutter base plate near the flipping frame. The cutter shaft passes through a through hole in one of the fixed plates and can rotate relative to the fixed plate. The second end of one cutter seat is sleeved on one end of the cutter shaft. The rotary cylinder is located on another fixed plate, and the second end of the other cutter seat is sleeved on the output end of the rotary cylinder.

[0009] As a preferred technical solution, the cutter assembly further includes a protective cover structure. The protective cover structure includes a mounting rod, two protective cover swing arms arranged opposite each other, a protective cover, and two protective cover cylinders. The two ends of the mounting rod are respectively disposed on the inner sides of the two fixed plates. The first ends of the two protective cover swing arms are respectively rotatably sleeved on the mounting rod. The protective cover is located between the pressure roller and the cutter base plate. The cutting edge of the cutter is located above the protective cover. The two ends of the protective cover are respectively disposed on the second ends of the two protective cover swing arms. The mounting ends of the two protective cover cylinders are respectively rotatably connected to the inner sides of the two fixed plates, and the output ends of the two protective cover cylinders are respectively rotatably connected to the two protective cover swing arms.

[0010] As a preferred technical solution, the cutter assembly further includes a cutter roller located above the cutter structure, with both ends of the cutter roller rotatably disposed inside the two fixed plates.

[0011] As a preferred technical solution, the unwinding device further includes a first unwinding guide roller and a second unwinding guide roller. The first unwinding guide roller is located on one side of the tilting frame and rotatably connected to one end of the tilting frame. The first unwinding guide roller is located above the flat-push cutter mechanism and below the first unwinding mechanism. The second unwinding guide roller is located on the other side of the tilting frame and rotatably connected to the other end of the tilting frame. The second unwinding guide roller is located below the first unwinding guide roller and above the second unwinding mechanism. One end of one of the mounting brackets is slidably disposed in one of the brackets via at least two first pads. Inside the mounting plate, two first pads are distributed vertically at intervals. One end of another mounting bracket is slidably disposed inside the other mounting plate via at least two second pads, which are also distributed vertically at intervals. The flat-push cutter mechanism also includes a support beam located on the side of the two mounting brackets away from the flipping frame. The support beam is connected to the two mounting brackets via first crossbeams, and to the cutter assembly via second crossbeams. One end of the support beam is disposed inside the lower first pad, and the other end is disposed inside the lower second pad.

[0012] As a preferred technical solution, the push-drive assembly includes a push-drive motor, a push-drive reducer, and a drive shaft. A first connecting plate is provided on the inner side of each of the two first pads, and a second connecting plate is provided on the inner side of each of the two second pads. The first and second connecting plates are located between the support beam and the two mounting brackets. A first support plate and a second support plate are respectively provided on the outer side of the first and second connecting plates. The push-drive reducer is mounted on one end of the first support plate via a reducer mount. The push-drive motor is mounted on the push-drive reducer, and the output end of the push-drive motor is connected to the input end of the push-drive reducer. A drive gear is fitted onto the output end of the push-drive reducer. The drive shaft is located between the first connecting plate and the second connecting plate and is rotatably connected to the cutter assembly. One end of the drive shaft passes through the through hole of the first connecting plate and the through hole of the first support plate and is fitted with a first drive gear. The other end of the drive shaft passes through the through hole of the second connecting plate and the through hole of the second support plate and is fitted with a second drive gear. The drive shaft can rotate relative to the first connecting plate, the first support plate, the second connecting plate, the second support plate and the cutter assembly. The inner sides of the two mounting plates are respectively provided with a first rack and a second rack. The drive gear and the first drive gear both mesh with the first rack, and the second drive gear meshes with the second rack.

[0013] As a preferred technical solution, the flipping frame includes a first body and a second body, which are arranged opposite to each other. One end of each of the two flipping shafts is connected to the outer side of the first body and the outer side of the second body, respectively. The first body and the second body are connected by a flipping crossbeam. The first unwinding mechanism and the second unwinding mechanism each include a first unwinding shaft, a second unwinding shaft, a first chuck, a second chuck, a rotation drive assembly, a first movement drive assembly, and a second movement drive assembly. The first unwinding shaft and the second unwinding shaft are arranged opposite to each other. The first unwinding shaft passes through a first through hole in the first body, and the second unwinding shaft passes through a second through hole in the second body. The first chuck and the second chuck are located between the first body and the second body and are arranged opposite to each other. One end of the first chuck and one end of the second chuck are connected to one end of the first unwinding shaft and one end of the second unwinding shaft, respectively. The rotation drive assembly is disposed on the second body and is used to drive the second unwinding shaft to rotate. The first movement drive assembly is disposed on the first body and is used to drive the first unwinding shaft to move towards or away from the center of the flipping frame. The second movement drive assembly is disposed on the second body and is used to drive the second unwinding shaft to move towards or away from the center of the flipping frame.

[0014] As a preferred technical solution, a bushing is rotatably sleeved on the first unwinding shaft, the bushing passing through the first through hole, and a first sliding sleeve is provided in the first through hole, the first sliding sleeve being slidably sleeved on the bushing; the first moving drive assembly includes a moving motor, a moving reducer, a lead screw, a nut, a moving connecting arm, and a guide rod, the moving reducer being disposed inside the first body, the moving motor being disposed on the moving reducer, the output end of the moving motor being connected to the input end of the moving reducer, the lead screw passing through a first hole in the first body and being rotatable relative to the first body, the output end of the moving reducer being connected to one end of the lead screw, the nut being threadedly engaged with the lead screw, the moving connecting arm being sleeved on the nut, one end of the moving connecting arm being sleeved on the other end of the first unwinding shaft and connected to the end of the bushing away from the center of the turning frame, the other end of the moving connecting arm being sleeved on a linear bearing, the linear bearing being sleeved on the guide rod, and the guide rod being partially disposed in a second hole in the first body.

[0015] As a preferred technical solution, a second sliding sleeve is rotatably disposed within the second through hole, and the second sliding sleeve is slidably sleeved on the second unwinding shaft; the rotation drive assembly includes a rotation motor, a rotation reducer, and a transmission structure, the rotation reducer is disposed on the outside of the second body, the rotation motor is disposed on the rotation reducer, the output end of the rotation motor is connected to the input end of the rotation reducer, the output end of the rotation reducer extends into the second body and is connected to the second sliding sleeve through the transmission structure; the second movement drive assembly includes a cylinder connecting arm and two movement cylinders, the cylinder connecting arm is sleeved on the other end of the second unwinding shaft, the two movement cylinders are respectively disposed at both ends of the second body, and the output ends of the two movement cylinders are respectively connected to both ends of the cylinder connecting arm.

[0016] As a preferred technical solution, the unwinding device further includes a first unwinding guide roller and a second unwinding guide roller. The first unwinding guide roller is located on one side of the flipping frame and is rotatably connected to one end of the flipping frame. The first unwinding guide roller is located above the flat-push cutter mechanism and below the first unwinding mechanism. The second unwinding guide roller is located on the other side of the flipping frame and is rotatably connected to the other end of the flipping frame. The second unwinding guide roller is located below the first unwinding guide roller and above the second unwinding mechanism.

[0017] The beneficial effects of this utility model are as follows: By setting up a flat-push cutting mechanism, this utility model can press the substrate of the material roll on the first unwinding mechanism or the second unwinding mechanism onto the adhesive part of the material roll on the second unwinding mechanism or the first unwinding mechanism when the substrate of the material roll on the first unwinding mechanism or the second unwinding mechanism is almost finished unwinding. This makes the substrate unwound by the first unwinding mechanism or the second unwinding mechanism bonded together with the material roll on the second unwinding mechanism or the first unwinding mechanism. It can also cut the substrate unwound by the first unwinding mechanism or the second unwinding mechanism. In this way, there is no need to set up a separate cutting device on one side of the unwinding device, which can reduce the volume of the lithium battery production line, occupy less space, improve space utilization, reduce production costs, and facilitate maintenance, management, and repair of the lithium battery production line. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of an unwinding device from a first angle according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A schematic diagram of the unwinding device at a second angle;

[0021] Figure 3 , Figure 4 yes Figure 1 A cross-sectional schematic diagram of the unwinding device shown;

[0022] Figure 5 yes Figure 1 The diagram shows the structure of the unwinding device, including the tilting frame, the first unwinding mechanism, the second unwinding mechanism, two tilting shafts, two rolls, the first unwinding roller, and the second unwinding roller.

[0023] Figure 6 yes Figure 5 The diagram shows the structure of the tilting frame, the first unwinding mechanism, the second unwinding mechanism, the two tilting shafts, the first unwinding roller, and the second unwinding roller.

[0024] Figure 7 yes Figure 5 The diagram shows a cross-sectional view of the tilting frame, the first unwinding mechanism, the second unwinding mechanism, two tilting shafts, two rolls, the first unwinding roller, and the second unwinding roller.

[0025] Figure 8 yes Figure 1 A schematic diagram of the first angle of the flat-pushing cutter mechanism of the unwinding device shown;

[0026] Figure 9 yes Figure 8 A schematic diagram of the second angle of the push-cutting mechanism shown;

[0027] Figure 10 yes Figure 8 The diagram shows the structure of the mounting plate, the push drive assembly, the mounting bracket, and the drive shaft on the left side of the push-cutting mechanism.

[0028] Figure 11 yes Figure 8 A schematic diagram of the first angle of the cutter assembly of the push-cutting mechanism shown;

[0029] Figure 12 yes Figure 11 A schematic diagram of the second angle of the cutter assembly shown;

[0030] Figure 13 yes Figure 11 A cross-sectional view of the cutter assembly shown;

[0031] Figure 14 yes Figure 11 A schematic diagram of the pressure roller structure of the cutter assembly shown;

[0032] Figure 15 yes Figure 11 A schematic diagram of the cutter structure of the cutter assembly shown;

[0033] Figure 16 yes Figure 11 The diagram shows the structural schematic of the protective cover structure of the cutter assembly.

[0034] Figure label:

[0035] 10. Base frame; 11. Support frame;

[0036] 20. Tilting frame; 21a. First body; 21b. Second body; 211. Body through hole; 22. Tilting crossbeam;

[0037] 30. First unwinding mechanism; 31. First unwinding shaft; 311. Bushing; 3111. Bushing bearing; 312. First sliding sleeve; 32. Second unwinding shaft; 321. Second sliding sleeve; 3211. Sliding sleeve bearing seat; 33. First chuck; 34. Second chuck; 351. Driven sprocket; 36. First moving drive assembly; 361. Moving motor; 362. Moving reducer; 363. Lead screw; 3631. Lead screw bearing seat; 364. Nut; 365. Moving connecting arm; 3651. Connecting arm through hole; 366. Guide rod; 367. Linear bearing; 37. Second moving drive assembly; 371. Moving cylinder; 372. Cylinder connecting arm; 3721. Connecting arm bearing;

[0038] 40. Second unwinding mechanism;

[0039] 50. Reversible shaft; 51. Reversible bearing housing;

[0040] 80. Flat-push cutting mechanism; 81. Mounting plate; 811. First slide rail; 812. First slider; 813. Second slide rail; 814. Second slider; 82. Mounting bracket; 821. First pad; 822. Second pad; 823. First connecting plate; 8231. First support plate; 824. Second connecting plate; 8241. Second support plate; 83. Flat-push drive assembly; 831. Flat-push motor; 832. Flat-push reducer; 8321. Reducer base; 833. Drive shaft; 8331. Drive bearing housing; 834. Drive gear; 835. First drive gear; 836. Second drive gear; 837. First rack; 838. Second rack; 84. Support beam; 841. First crossbeam; 842. Second crossbeam; 85. Cutter assembly; 851. Fixing plate; 851a. Groove; 8511. Fixing plate crossbeam; 8512. Protective cover plate; 8513. Protective cover shaft; 8521. Pressure roller; 8522. Pressure roller connecting shaft; 8523. Pressure roller swing arm; 8524. Pressure roller cylinder; 8531. Cutter; 8532. Cutter base plate; 8533. Cutter seat; 8534. Cutter rotating shaft; 85341. Cutter bearing seat; 8535. Cylinder plate; 85351. Mounting block; 8536. Rotary cylinder; 8541. Protective cover; 8542. Mounting rod; 8543. Protective cover swing arm; 8544. Protective cover cylinder; 855. Cutter guide roller;

[0041] 60. First unwinding roller; 61. First roller plate;

[0042] 70. Second unwinding roller; 71. Second roller plate;

[0043] 100. Material roll; 101. Roll. Detailed Implementation

[0044] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0045] Please refer to Figures 1 to 4An embodiment of the present invention provides an unwinding device, including two base frames 10 arranged in a left-right opposite manner, a flipping frame 20, a first unwinding mechanism 30, a second unwinding mechanism 40, two flipping shafts 50 arranged in a left-right opposite manner, a first unwinding roller 60, a second unwinding roller 70, and a flat push cutter mechanism 80.

[0046] The tilting frame 20 is located between two base frames 10. The first unwinding mechanism 30 and the second unwinding mechanism 40 are both mounted on the tilting frame 20 and are distributed vertically at intervals. The tilting frame 20 provides mounting support for the first unwinding mechanism 30 and the second unwinding mechanism 40. The first unwinding mechanism 30 and the second unwinding mechanism 40 are respectively used to mount the material roll 100 and to unwind the substrate of the material roll 100, such as copper foil or aluminum foil. Two tilting shafts 50 are rotatably mounted on the top of the two base frames 10 via two tilting bearing seats 51. One end of each tilting shaft 50 is connected to both sides of the tilting frame 20, and the other end of each tilting shaft 50 is connected to a power mechanism. The power mechanism drives the two tilting shafts 50 to rotate, thereby causing the tilting frame 20 to rotate 180 degrees, thus exchanging the vertical positions of the first unwinding mechanism 30 and the second unwinding mechanism 40. The flat-push cutting mechanism 80 is located on one side of the flipping frame 20, for example, in front of the flipping frame 20. The flat-push cutting mechanism 80 is disposed inside the two base frames 10 and the flat-push cutting mechanism 80 protrudes from one end of the two base frames 10. The flat-push cutting mechanism 80 is used to press the substrate of the material roll 100 on the first unwinding mechanism 30 or the second unwinding mechanism 40 onto the adhesive part of the material roll on the second unwinding mechanism 40 or the first unwinding mechanism 30 when the substrate of the material roll 100 on the first unwinding mechanism 30 or the second unwinding mechanism 40 is about to be unwound, so that the substrate unwound by the first unwinding mechanism 30 or the second unwinding mechanism 40 is bonded together with the material roll on the second unwinding mechanism 40 or the first unwinding mechanism 30, and to cut the substrate unwound by the first unwinding mechanism 30 or the second unwinding mechanism 40. The first unwinding roller 60 is located on one side of the flipping frame 20, for example, in front of the flipping frame 20 and rotatably connected to one end of the flipping frame 20. The first unwinding roller 60 is located above the flat-push cutter mechanism 80 and below the first unwinding mechanism 30. The second unwinding roller 70 is located on the other side of the flipping frame 20, for example, behind the flipping frame 20 and rotatably connected to the other end of the flipping frame 20. The second unwinding roller 70 is located below the first unwinding roller 60 and above the second unwinding mechanism 40. The first unwinding roller 60 and the second unwinding roller 70 provide support for the substrate.

[0047] The structure of the unwinding device of this utility model will be described in detail below.

[0048] Combination Figures 5 to 7As shown, the tilting frame 20 includes a first body 21a and a second body 21b, which are arranged facing each other from left to right. One end of each of the two tilting shafts 50 is connected to the outer side of the first body 21a and the outer side of the second body 21b, respectively. The first body 21a and the second body 21b are connected by a tilting crossbeam 22, which serves to connect and support the first body 21a and the second body 21b.

[0049] In this embodiment, both the first body 21a and the second body 21b are square tubes.

[0050] The first unwinding mechanism 30 and the second unwinding mechanism 40 both include a first unwinding shaft 31, a second unwinding shaft 32, a first chuck 33, a second chuck 34, a rotation drive assembly, a first movement drive assembly 36, and a second movement drive assembly 37.

[0051] The first unwinding shaft 31 and the second unwinding shaft 32 are arranged opposite each other from left to right. The first body 21a has a first through hole that passes through its outer and inner sides and communicates with the interior of the first body 21a. The second body 21b has a second through hole that passes through its outer and inner sides and communicates with the interior of the second body 21b. The first unwinding shaft 31 passes through the first through hole of the first body 21a, and the second unwinding shaft 32 passes through the second through hole of the second body 21b. One end of the first unwinding shaft 31 and one end of the second unwinding shaft 32 are located between the first body 21a and the second body 21b. The other end of the first unwinding shaft 31 is located to the left of the first body 21a, and the other end of the second unwinding shaft 32 is located to the right of the second body 21b. The first chuck 33 and the second chuck 34 are located between the first body 21a and the second body 21b, and are arranged opposite each other. One end of the first chuck 33 and one end of the second chuck 34 are respectively connected to one end of the first unwinding shaft 31 and one end of the second unwinding shaft 32. The other ends of the first chuck 33 and the second chuck 34 are respectively used to insert into the two ends of the roll 101 of the material roll 100. The rotation drive assembly is set on the second body 21b and is used to drive the second unwinding shaft 32 to rotate, thereby driving the second chuck 34 to rotate. When the other ends of the first chuck 33 and the second chuck 34 are respectively inserted into the two ends of the roll 101 of the material roll 100, the rotation of the second chuck 34 can drive the material roll 100, the roll 101, the first chuck 33 and the first unwinding shaft 31 to rotate, thus realizing the unwinding of the substrate of the material roll 100. The first moving drive assembly 36 is disposed on the first body 21a and is used to drive the first unwinding shaft 31 to move toward or away from the center of the flipping frame 20, thereby driving the first chuck 33 to move toward or away from the center of the flipping frame 20. The second moving drive assembly 37 is disposed on the second body 21b and is used to drive the second unwinding shaft 32 to move toward or away from the center of the flipping frame 20, thereby driving the second chuck 34 to move toward or away from the center of the flipping frame 20. When the material roll 100 is installed on the first unwinding mechanism 30 or the second unwinding mechanism 40, the first moving drive assembly 36 and the second moving drive assembly 37 first drive the material roll 100 to move toward or away from the center of the flipping frame 20. Component 37 drives the first chuck 33 and the second chuck 34 to move away from the center of the flipping frame 20, increasing the distance between the first chuck 33 and the second chuck 34. Then, the AVG trolley and the like move the material roll 100 between the first chuck 33 and the second chuck 34. Then, the first moving drive component 36 and the second moving drive component 37 drive the first chuck 33 and the second chuck 34 to move closer to the center of the flipping frame 20, so that the other end of the first chuck 33 and the other end of the second chuck 34 are respectively inserted into the two ends of the roll 101 of the material roll 100. Thus, the installation of the material roll 100 is completed.When the substrate of the material roll 100 is almost unwound to form an empty material roll 100, it is necessary to remove the empty material roll from the first unwinding mechanism 30 or the second unwinding mechanism 40. The AVG trolley first moves to the bottom of the drum 101 of the material roll 100, and then drives the first chuck 33 and the second chuck 34 to move away from the center of the flipping frame 20 through the first moving drive assembly 36 and the second moving drive assembly 37 respectively, so that the other end of the first chuck 33 and the other end of the second chuck 34 are removed from the two ends of the drum 101 of the material roll 100. At this time, the empty material roll 100 is placed on the AVG trolley, and thus the empty material roll 100 is removed from the first unwinding mechanism 30 or the second unwinding mechanism 40.

[0052] The first moving drive assembly 36 includes a moving motor 361, a moving reducer 362, a lead screw 363, a nut 364, a moving connecting arm 365, and a guide rod 366. A bushing 311 is rotatably sleeved on the first unwinding shaft 31, the bushing 311 passing through a first through hole, and a first sliding sleeve 312 is provided in the first through hole, the first sliding sleeve 312 being slidably sleeved on the bushing 311. The moving reducer 362 is located inside the first body 21a, the moving motor 361 is mounted on the moving reducer 362, and the output end of the moving motor 361 is connected to the input end of the moving reducer 362. The first body 21a has a first hole that passes through its outer and inner sides. The first hole communicates with the interior of the first body 21a. The lead screw 363 passes through the first hole of the first body 21a and can rotate relative to the first body 21a. One end of the lead screw 363 is located between the first body 21a and the second body 21b, and the other end of the lead screw 363 is located to the left of the first body 21a. In this embodiment, two lead screw bearing seats 3631 are respectively provided in the two ends of the first hole. The two lead screw bearing seats 3631 are respectively sleeved on the lead screw 363. The two lead screw bearing seats 3631 protrude from the inner and outer sides of the first body 21a and are respectively fixed to the inner and outer sides of the first body 21a. The lead screw bearing seats 3631 can provide rotational support for the lead screw 363. The output end of the mobile reducer 362 is connected to one end of the lead screw 363. The nut 364 is located to the left of the first body 21a and is threadedly engaged with the lead screw 363. The mobile connecting arm 365 is sleeved on the nut 364. One end of the mobile connecting arm 365 is sleeved on the other end of the first unwinding shaft 31 and connected to the end of the bushing 311 away from the center of the tilting frame 20. The other end of the mobile connecting arm 365 is sleeved on the linear bearing 367. The linear bearing 367 is sleeved on the guide rod 366. The first body 21a has a second hole that penetrates its outer and inner sides. The second hole communicates with the interior of the first body 21a. The guide rod 366 is partially located in the second hole of the first body 21a. The movable motor 361 drives the lead screw 363 to rotate via the movable reducer 362, thereby causing the nut 364 to move closer to or further away from the center of the tilting frame 20. This, in turn, causes the movable connecting arm 365 to move closer to or further away from the center of the tilting frame 20. Consequently, the bushing 311 moves relative to the first sliding sleeve 312 and the linear bearing 367 moves relative to the guide rod 366, moving closer to or further away from the center of the tilting frame 20. The movement of the bushing 311 causes the first unwinding shaft 31 to move closer to or further away from the center of the tilting frame 20. The linear bearing 367 and the guide rod 366 guide the movement of the movable connecting arm 365, improving the smoothness of its movement.

[0053] In this embodiment, one end of the movable connecting arm 365 is provided with a connecting arm through hole 3651. One end of the movable connecting arm 365 is sleeved on the other end of the first unwinding shaft 311 through the connecting arm through hole 3651. The first unwinding shaft 311 does not contact the inner wall of the connecting arm through hole 3651. Two bushing bearings 3111 are respectively provided in both ends of the bushing 311. The two bushing bearings 3111 are respectively sleeved on the first unwinding shaft 31 to provide rotational support for the first unwinding shaft 31.

[0054] The rotation drive assembly includes a rotation motor (not shown in the figure), a rotation reducer (not shown in the figure), and a transmission structure. A second sliding sleeve 321 is rotatably disposed within the second through hole. In this embodiment, two sliding sleeve bearing seats 3211 are respectively provided at both ends of the second through hole. The two sliding sleeve bearing seats 3211 are respectively sleeved on the second sliding sleeve 321. The two sliding sleeve bearing seats 321 protrude from the outer and inner sides of the second body 21b respectively and are fixed to the outer and inner sides of the second body 21b respectively. The two sliding sleeve bearing seats 3211 provide rotational support for the second sliding sleeve 321. The second sliding sleeve 321 is slidably sleeved on the second unwinding shaft 32. The rotation reducer is disposed on the outer side of the second body 21b, and the rotation motor is disposed on the rotation reducer. The output end of the rotation motor is connected to the input end of the rotation reducer, and the output end of the rotation reducer passes through the body through hole 211 of the second body 21b (see figure). Figure 6 It extends into the second body 21b, and the output end of the rotary reducer is connected to the second sliding sleeve 321 through a transmission structure. The rotary motor is used to drive the second sliding sleeve 321 to rotate through the rotary reducer and transmission structure, thereby driving the second unwinding shaft 32 to rotate.

[0055] The transmission structure is located within the second body 21b and is a chain and sprocket structure. This structure includes a driving sprocket, a driven sprocket 351, and a chain fitted onto the driving and driven sprockets 351. The driving sprocket is fitted onto the output end of the rotary reducer, and the driven sprocket 351 is fitted onto the second sliding sleeve 321. A rotary motor drives the driving sprocket to rotate via the rotary reducer, thereby rotating the driven sprocket 351 and the chain, which in turn rotates the second sliding sleeve 321. Understandably, the transmission structure can also be other types, such as a synchronous belt drive.

[0056] The second moving drive assembly 37 includes two moving cylinders 371 and cylinder connecting arms 372. The cylinder connecting arms 372 are sleeved on the other end of the second unwinding shaft 32. In this embodiment, the cylinder connecting arms 372 have connecting arm holes, through which they are sleeved on the other end of the second unwinding shaft 32. A connecting arm bearing 3721 is provided within the connecting arm holes, and is sleeved on the other end of the second unwinding shaft 32 to provide rotational support for the second unwinding shaft 32. The two moving cylinders 371 are respectively located at both ends of the second body 21b, and their output ends are respectively connected to both ends of the cylinder connecting arms 372. The two moving cylinders 371 drive the cylinder connecting arms 372 to move towards or away from the center of the tilting frame 20, thereby causing the second unwinding shaft 32 to move relative to the second sliding sleeve 321 towards or away from the center of the tilting frame 20.

[0057] Two first guide roller plates 61 are respectively provided at one end of the first body 21a and one end of the second body 21b. The two first guide roller plates 61 are arranged opposite each other from left to right. The two ends of the first unwinding guide roller 60 are respectively rotatably disposed inside the two first guide roller plates 61 through two first guide roller bearing seats. Two second guide roller plates 71 are respectively provided at the other end of the first body 21a and the other end of the second body 21b. The two second guide roller plates 71 are arranged opposite each other from left to right. The two ends of the second unwinding guide roller 70 are respectively rotatably disposed inside the two second guide roller plates 71 through two second guide roller bearing seats.

[0058] Combination Figures 8 to 10 As shown, the flat-push cutting mechanism 80 includes two mounting plates 81 arranged opposite each other to the left and right, two mounting brackets 82 arranged opposite each other to the left and right, a flat-push drive assembly 83, a support beam 84, and a cutting assembly 85.

[0059] Two mounting plates 81 are located on one side of the flipping frame 20, for example, in front of the flipping frame 20. The two mounting plates 81 are respectively disposed inside the two base frames 10, and each of the two mounting plates 81 protrudes from one end of the two base frames 10. One end of each of the two mounting brackets 82 is slidably disposed inside the two mounting plates 81. A cutter assembly 85 is provided between the other ends of the two mounting brackets 82. A push drive assembly 83 is used to drive the two mounting brackets 82 to move toward or away from the flipping frame 20, thereby driving the cutter assembly 85 to move toward or away from the flipping frame 20. The cutter assembly 85 corresponds to the second unwinding mechanism 40.

[0060] In this embodiment, one end of the base frame 10 is provided with two support frames 11. The portion of the mounting plate 81 protruding from one end of the corresponding base frame 10 is disposed inside the support frame 11 of the corresponding base frame 10. The provided support frame 11 can provide installation support for the corresponding mounting plate 81.

[0061] One mounting bracket 82, for example, the mounting bracket 82 located on the left, has one end slidably mounted on the inner side of one mounting plate 81, for example, the mounting plate 81 located on the left, via two first pads 821 arranged vertically at intervals. The other mounting bracket 82, for example, the mounting bracket 82 located on the right, has one end slidably mounted on the inner side of the other mounting plate 81, for example, the mounting plate 81 located on the right, via two second pads 822 arranged vertically at intervals. Understandably, the number of first pads 821 and second pads 822 can be set according to actual conditions.

[0062] In this embodiment, the inner side of the mounting plate 81 on the left is provided with two first slide rails 811 corresponding to the two first pads 821. The length direction of the first slide rails 811 is the same as the length direction of the mounting plate 81. The outer side of the first pads 821 is provided with first sliders 812, and the first sliders 812 of the two first pads 821 are slidably engaged with the two first slide rails 811 respectively. The inner side of the mounting plate 81 on the right is provided with two second slide rails 813 corresponding to the two second pads 822. The length direction of the second slide rails 813 is the same as the length direction of the mounting plate 81. The outer side of the second pads 822 is provided with second sliders 814, and the second sliders 814 of the two second pads 822 are slidably engaged with the two second slide rails 813 respectively. The number of first sliders 812 and second sliders 814 can be set according to actual conditions.

[0063] The support beam 84 is located on the side of the two mounting brackets 82 away from the flipping frame 20, for example, in front of the two mounting brackets 82. The support beam 84 is connected to the two mounting brackets 82 by a first crossbeam 841, and the support beam 84 is connected to the cutter assembly 85 by a second crossbeam 842. One end of the support beam 84 is located inside the lower first pad 821, and the other end of the support beam 84 is located inside the lower second pad 822. The support beam 84 provides support for the two mounting brackets 82 and the cutter assembly 85 to prevent deformation of the mounting brackets 82 and the cutter assembly 85.

[0064] The push drive assembly 83 includes a push motor 831, a push reducer 832, and a drive shaft 833. A first connecting plate 823 is provided on the inner side of two first pads 821, and a second connecting plate 824 is provided on the inner side of two second pads 822. The first connecting plate 823 and the second connecting plate 824 are located between the support beam 84 and the two mounting brackets 82. A first support plate 8231 and a second support plate 8241 are respectively provided on the outer side of the first connecting plate 823 and the outer side of the second connecting plate 824. The push reducer 832 is located between the first connecting plate 823 and the support beam 84. The push reducer 832 is mounted on one end of the first support plate 8231 via a reducer base 8321. The push motor 831 is mounted on the push reducer 832, and the output end of the push motor 831 is connected to the input end of the push reducer 832. A drive gear 834 is fitted onto the output end of the push reducer 832. The drive shaft 833 is located between the first connecting plate 823 and the second connecting plate 824 and is rotatably connected to the cutter assembly 85. One end of the drive shaft 833 passes through the through hole of the first connecting plate 823 and the through hole of the first support plate 8231 and is fitted with the first drive gear 835. The other end of the drive shaft 833 passes through the through hole of the second connecting plate 824 and the through hole of the second support plate 8241 and is fitted with the second drive gear 836. The drive shaft 833 can rotate relative to the first connecting plate 823, the first support plate 8231, the second connecting plate 824, the second support plate 8241 and the cutter assembly 85. The flat push reducer 832 and the flat push motor 831 are located between the support beam 84 and the drive shaft 833 and are located above the support beam 84. The inner sides of the two mounting plates 81 are respectively provided with a first rack 837 and a second rack 838. The first rack 837 and the second rack 838 are arranged opposite each other from left to right. The length direction of the first rack 837 and the second rack 838 is the same as the length direction of the mounting plate 81. The drive gear 834 and the first transmission gear 835 are both meshed with the first rack 837, and the second transmission gear 836 is meshed with the second rack 838. The push motor 831 drives the drive gear 834 to rotate via the push reducer 832. Under the action of the drive gear 834 meshing with the first rack 837, the drive gear 834 can move along the first rack 837 towards or away from the tilting frame 20. The rotation of the drive gear 834 can drive the push reducer 832, the push motor 831, the first support plate 8231, the first connecting plate 823, the two first pads 821, the support beam 84, the two mounting brackets 82, the drive shaft 833, the cutter assembly 85, the second support plate 8241, the second connecting plate 824, and the two second pads 822 to move towards or away from the tilting frame 20. The movement of the drive shaft 833 can drive the first driven gear 835 and the second driven gear 836 to move and rotate along the first rack 837 and the second rack 838, respectively. The rotation of the first driven gear 835 and the second driven gear 836 can drive the drive shaft 833 to rotate.The drive shaft 833, the first driven gear 835, and the second driven gear 836 ensure the synchronicity of the movement of the two mounting brackets 82.

[0065] In this embodiment, a first support bearing is provided in the through hole of the first support plate 8231, and a second support bearing is provided in the through hole of the second support plate 8241. The first support bearing and the second support bearing are respectively sleeved on the transmission shaft 833 to provide rotational support for the transmission shaft 833.

[0066] Combination Figures 11 to 16 As shown, the cutter assembly 85 includes two fixed plates 851 arranged opposite each other, a pressure roller structure, a cutter structure, a protective cover structure, and a cutter guide roller 855.

[0067] Two fixing plates 851 are respectively disposed at the other ends of the two mounting brackets 82. The two fixing plates 851 are connected by a fixing plate crossbeam 8511, which provides support for the two fixing plates 851. A second crossbeam 842 connects the support beam 84 and the fixing plate crossbeam 8511. The drive shaft 833 is rotatably connected to the two fixing plates 851 through two drive bearing seats 8331.

[0068] The pressure roller structure includes a pressure roller 8521, two pressure roller connecting shafts 8522 arranged left and right opposite each other, two pressure roller swing arms 8523 arranged left and right opposite each other, and two pressure roller cylinders 8524 arranged left and right opposite each other. One end of each of the two pressure roller connecting shafts 8522 is respectively disposed inside the two fixed plates 851. The two pressure roller swing arms 8523 are located between the two fixed plates 851 and are rotatably sleeved on the two pressure roller connecting shafts 8522 respectively. In this embodiment, the pressure roller swing arm 8523 is provided with a first swing arm through hole. The pressure roller swing arm 8523 is sleeved on the corresponding pressure roller connecting shaft 8522 through the swing arm through hole. A swing arm bearing is provided in the swing arm through hole. The swing arm bearing is sleeved on the corresponding pressure roller connecting shaft 8522 to provide rotational support for the corresponding pressure roller swing arm 8523. The pressure roller 8521 is located above the two pressure roller connecting shafts 8522, and both ends of the pressure roller 8521 are rotatably mounted at the first ends of the two pressure roller swing arms 8523. In this embodiment, the first end of the pressure roller swing arm 8523 is provided with a second swing arm through hole, and both ends of the pressure roller 8521 are rotatably mounted in the second swing arm through holes of the two pressure roller swing arms 8523 through two pressure roller bearings. The pressure roller 8521 corresponds to the second unwinding mechanism 40. The two pressure roller cylinders 8524 are respectively located inside the two fixed plates 851 and on the side of the pressure roller 8521 away from the flipping frame 20, that is, in front of the pressure roller 8521. Both pressure roller cylinders 8524 are inclined downwards, and the output ends of the two pressure roller cylinders 8524 are rotatably connected to the second ends of the two pressure roller swing arms 8523. Two pressure roller cylinders 8524 are used to drive two pressure roller swing arms 8523 to rotate around the axis of the corresponding pressure roller connecting shaft 8522, thereby driving the pressure roller 8521 to rotate around the axis of the two pressure roller connecting shafts 8522.

[0069] The cutting structure is located above the pressure roller structure. The cutting structure includes a cutter 8531, a cutter base plate 8532, two cutter holders 8533 arranged opposite each other, a cutter shaft 8534, and a rotary cylinder 8536. The cutter base plate 8532 is located above the pressure roller 8521 and on the side of the pressure roller 8521 away from the center of the flipping frame 20, i.e., in front of the center of the pressure roller 8521. The cutter base plate 8532 is inclined downwards, and the first ends of the two cutter holders 8533 are respectively located at the top of the cutter base plate 8532. The cutter 8531 is located at the top of the cutter base plate 8532 and between the two cutter holders 8533, with the cutting edge of the cutter 8531 protruding from the side of the cutter base plate 8532 closest to the flipping frame 20. The cutter shaft 8534 passes through the through hole of one of the fixing plates 851, for example, the fixing plate 851 located on the right, and can rotate relative to the fixing plate 851. In this embodiment, two cutter bearing seats 85341 are respectively provided on the inner and outer sides of the fixing plate 851 located on the right. The two cutter bearing seats 85341 are respectively sleeved on the cutter shaft 8534 to provide rotational support for the cutter shaft 8534. One end of the cutter shaft 8534 is located between the two fixing plates 851, and the other end of the cutter shaft 8534 is located on the right side of the two fixing plates 851. The second end of one of the cutter seats 8533, for example, the cutter seat 8533 located on the right, is sleeved on one end of the cutter shaft 8534. A rotary cylinder 8536 is mounted on another fixed plate 851, for example, the fixed plate 851 located on the left. Another cutter holder 8533, for example, the cutter holder 8533 located on the left, has its second end sleeved on the output end of the rotary cylinder 8536. The rotary cylinder 8536 is used to drive the cutter holder 8533 located on the left to rotate, thereby driving the cutter base plate 8532, the cutter 8531, the cutter holder 8533 located on the right, and the cutter shaft 8534 to rotate.

[0070] In this embodiment, another fixing plate 851, for example, is located on the left side of the fixing plate 851. A groove 851a is provided at one end of the plate near the flipping frame 20. A rotary cylinder 8536 passes through the groove 851a. On the inner side of the other fixing plate 851, for example, the left side of the fixing plate 851, two mounting blocks 85351 are respectively provided above and below the groove 851a. A cylinder plate 8535 is provided at one end of the two mounting blocks 85351 near the cutter shaft 8534. The rotary cylinder 8536 is located on the side of the cylinder plate 8535 away from the cutter shaft 8534, and the output end of the rotary cylinder 8536 passes through the through hole of the cylinder plate 8535 and is located between the cylinder plate 8535 and one of the cutter seats 8533, for example, the right side of the cutter seat 8533.

[0071] The protective cover structure includes a roughly U-shaped protective cover 8541, a mounting rod 8542, two protective cover swing arms 8543 arranged opposite each other, and two protective cover cylinders 8544. The two ends of the mounting rod 8542 are respectively located inside the two fixed plates 851, and the mounting rod 8542 is positioned above the fixed plate crossbeam 8511. The first ends of the two protective cover swing arms 8543 are rotatably sleeved on the mounting rod 8542. In this embodiment, the first end of the protective cover swing arm 8543 is provided with a swing arm mounting hole, through which the protective cover swing arm 8543 is rotatably sleeved on the mounting rod 8542. A swing arm bearing is provided in the swing arm mounting hole, and the swing arm bearing is sleeved on the mounting rod 8542 to provide rotational support for the protective cover swing arm 8543. The protective cover 8541 is located between the pressure roller 8521 and the cutter base plate 8532. The blade of the cutter 8531 is located above the protective cover 8541. The two ends of the protective cover 8541 are respectively located at the second ends of the two protective cover swing arms 8543. The two protective cover cylinders 8544 are located below the mounting rod 8542 and above the fixed plate crossbeam 8511, and are located on the side of the protective cover 8541 away from the flipping frame 20, i.e., in front of the protective cover 8541. The protective cover cylinders 8544 are inclined downwards. The mounting ends of the two protective cover cylinders 8544 are rotatably connected to the inner side of the two fixed plates 851 respectively. In this embodiment, the inner side of the two fixed plates 851 is provided with two protective cover plates 8512, and the inner side of the two protective cover plates 8512 is provided with two protective cover shafts 8513 respectively. The mounting ends of the two protective cover cylinders 8544 are rotatably connected to the ends of the two protective cover shafts 8513 respectively. The output ends of the two protective cylinders 8544 are respectively rotatably connected to the two protective swing arms 8543. Two protective cover cylinders 8544 are used to drive two protective cover swing arms 8543 to rotate around the axis of the mounting rod 8542, thereby driving the protective cover 8541 to rotate around the axis of the mounting rod 8542. When the unwinding device is not working, by driving the protective cover 8541 to rotate clockwise around the axis of the mounting rod 8542 to a predetermined position, the blade of the cutter 8531 can be located inside the protective cover 8541, thus protecting the blade of the cutter 8531 and preventing the cutter 8531 from scratching the workers. When the unwinding device is working, by driving the protective cover 8541 to rotate counterclockwise around the axis of the mounting rod 8542 to the initial position, the blade of the cutter 8531 is located above the protective cover 8541, which facilitates the rotation of the cutter 8531 by the rotary cylinder 8536.

[0072] The cutter roller 855 is located above the cutter structure and mounting rod 8542. Both ends of the cutter roller 855 are rotatably mounted inside two fixing plates 851. In this embodiment, the inner side of the fixing plates 851 is provided with mounting holes, and both ends of the cutter roller 855 are rotatably mounted within the mounting holes of the two fixing plates 851 via two roller bearings. The cutter roller 855 provides support for the substrate.

[0073] With the above structure, in practical application, the material roll 100 is first installed on the first unwinding mechanism 30 and the second unwinding mechanism 40 respectively. The first unwinding mechanism 30 unwinds the substrate of the material roll 100, and the unwound substrate passes sequentially over the first unwinding roller 60 and the pressure roller 8521, as shown above. Figure 3 As shown, when the substrate of the material roll 100 on the first unwinding mechanism 30 is almost unwound, the cutting assembly 85 is driven by the flat push drive assembly 83 to move towards the predetermined position close to the flipping frame 20, as shown. Figure 4 As shown, the substrate is supported by the cutter roller 855, and then the pressure roller 8521 is driven to rotate counterclockwise by the two pressure roller cylinders 8524. The pressure roller 8521 presses the substrate onto the adhesive area of ​​the material roll 100 on the second unwinding mechanism 40, thus bonding the substrate to the material roll 100 on the second unwinding mechanism 40. Then, the cutter 8531 is driven to rotate clockwise by the rotary cylinder 8536. During the rotation, the cutter 8531 cuts the substrate. Then, the pressure roller 8521 is driven to rotate clockwise to the initial position by the two pressure roller cylinders 8524 and the cutter 8531 is driven to rotate counterclockwise to the initial position by the rotary cylinder 8536. Finally, the cutter assembly 85 is driven to move away from the flipping frame 20 to the initial position by the flat push drive assembly 83. Then, the two flipping shafts 50 drive the flipping frame 20, the first unwinding mechanism 30, the second unwinding mechanism 40, the first unwinding guide roller 60, and the second unwinding guide roller 70 to rotate 180 degrees counterclockwise, so that the upper and lower positions of the first unwinding mechanism 40 and the second unwinding mechanism 50 are swapped. At this time, the second unwinding mechanism 40 is located above the first unwinding mechanism 30. Then, the AVG trolley moves to the bottom of the empty roll 100 on the first unwinding mechanism 30, and then removes the empty roll 100 and replaces it with a full roll 100. Then, the substrate of the roll 100 on it is unwound by the second unwinding mechanism 40. The unwound substrate can pass over the second unwinding guide roller 70 and the pressure roller 8521.

[0074] When the substrate of the material roll 100 on the second unwinding mechanism 40 is almost unwound, the aforementioned steps can be followed. By doing so, automatic roll changing and tape splicing can be achieved.

[0075] This utility model, through the provision of a flat-push cutting mechanism 80, can press the substrate of the material roll 100 on the first unwinding mechanism 30 or the second unwinding mechanism 40 onto the adhesive area of ​​the material roll 100 when the substrate of the material roll 100 on the first unwinding mechanism 30 or the second unwinding mechanism 40 is almost unwound. This allows the substrate unwound by the first unwinding mechanism 30 or the second unwinding mechanism 40 to adhere together with the material roll on the second unwinding mechanism 40 or the first unwinding mechanism 30, and can also cut the substrate unwound by the first unwinding mechanism 30 or the second unwinding mechanism 40. This eliminates the need for a separate cutting device on one side of the unwinding device, reducing the volume of the lithium battery production line, occupying less space, improving space utilization, reducing production costs, and facilitating maintenance, management, and repair of the lithium battery production line.

[0076] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An unwinding device, comprising two base frames arranged opposite to each other, a tilting frame, a first unwinding mechanism, a second unwinding mechanism, and two tilting shafts arranged opposite to each other, wherein the tilting frame is located between the two base frames, the first unwinding mechanism and the second unwinding mechanism are both disposed on the tilting frame and are distributed vertically at intervals, and the two tilting shafts are respectively rotatably disposed at the top ends of the two base frames and one end of the two tilting shafts is respectively connected to both sides of the tilting frame, characterized in that, It also includes a flat-push cutter mechanism located on one side of the flipping frame. The flat-push cutter mechanism is disposed inside the two base frames and a portion of the flat-push cutter mechanism protrudes from one end of the two base frames. The flat-push cutter mechanism includes two mounting plates arranged opposite each other, two mounting brackets arranged opposite each other, a flat-push drive assembly, and a cutter assembly. The two mounting plates are located on one side of the flipping frame. The two mounting plates are respectively disposed inside the two base frames and a portion of the two mounting plates protrudes from one end of the two base frames. One end of each of the two mounting brackets is slidably disposed inside the two mounting plates. The cutter assembly is disposed between the other ends of the two mounting brackets. The flat-push drive assembly is used to drive the two mounting brackets to move toward or away from the flipping frame. The cutter assembly corresponds to the second unwinding mechanism.

2. The unwinding device according to claim 1, characterized in that, The cutter assembly includes two opposing fixed plates and a pressure roller structure. The two fixed plates are respectively located at the other end of two mounting brackets and are connected by a fixed plate crossbeam. The pressure roller structure includes two opposing pressure roller connecting shafts, two opposing pressure roller swing arms, a pressure roller, and two pressure roller cylinders. One end of each of the two pressure roller connecting shafts is located inside the two fixed plates. The two pressure roller swing arms are located between the two fixed plates and are rotatably mounted on the two pressure roller connecting shafts. The pressure roller is located above the two pressure roller connecting shafts, and both ends of the pressure roller are rotatably located at the first ends of the two pressure roller swing arms. The pressure roller corresponds to the second unwinding mechanism. The two pressure roller cylinders are respectively located inside the two fixed plates, and the output ends of the two pressure roller cylinders are rotatably connected to the second ends of the two pressure roller swing arms.

3. The unwinding device according to claim 2, characterized in that, The cutting assembly also includes a cutting structure located above the pressure roller structure. The cutting structure includes a cutting base plate, two oppositely arranged cutting bases, a cutting blade, a cutting blade shaft, and a rotary cylinder. The cutting base plate is located above the pressure roller and is inclined downwards. The first ends of the two cutting bases are respectively located at the top of the cutting base plate. The cutting blade is located at the top of the cutting base plate and between the two cutting bases. The cutting edge of the cutting blade protrudes from the side of the cutting base plate near the flipping frame. The cutting blade shaft passes through a through hole in one of the fixed plates and can rotate relative to the fixed plate. The second end of one of the cutting bases is sleeved on one end of the cutting blade shaft. The rotary cylinder is located on the other fixed plate, and the second end of the other cutting base is sleeved on the output end of the rotary cylinder.

4. The unwinding device according to claim 3, characterized in that, The cutter assembly also includes a protective cover structure, which includes a mounting rod, two opposing protective cover arms, a protective cover, and two protective cover cylinders. The two ends of the mounting rod are respectively disposed on the inner sides of the two fixed plates. The first ends of the two protective cover arms are respectively rotatably sleeved on the mounting rod. The protective cover is located between the pressure roller and the cutter base plate. The cutting edge of the cutter is located above the protective cover. The two ends of the protective cover are respectively disposed on the second ends of the two protective cover arms. The mounting ends of the two protective cover cylinders are respectively rotatably connected to the inner sides of the two fixed plates, and the output ends of the two protective cover cylinders are respectively rotatably connected to the two protective cover arms.

5. The unwinding device according to claim 3, characterized in that, The cutter assembly also includes a cutter roller located above the cutter structure, with both ends of the cutter roller rotatably disposed inside the two fixed plates.

6. The unwinding device according to claim 1, characterized in that, The unwinding device further includes a first unwinding guide roller and a second unwinding guide roller. The first unwinding guide roller is located on one side of the flipping frame and is rotatably connected to one end of the flipping frame. The first unwinding guide roller is located above the flat push cutter mechanism and below the first unwinding mechanism. The second unwinding guide roller is located on the other side of the flipping frame and is rotatably connected to the other end of the flipping frame. The second unwinding guide roller is located below the first unwinding guide roller and above the second unwinding mechanism. One end of one mounting bracket is slidably disposed on the inner side of one mounting plate via at least two first pads, the two first pads being distributed vertically at intervals. One end of the other mounting bracket is slidably disposed on the inner side of another mounting plate via at least two second pads, the two second pads being distributed vertically at intervals. The flat-push cutter mechanism also includes a support beam, the support beam being located on the side of the two mounting brackets away from the flipping frame. The support beam is connected to the two mounting brackets respectively via a first crossbeam, and the support beam is connected to the cutter assembly via a second crossbeam. One end of the support beam is disposed on the inner side of the lower first pad, and the other end of the support beam is disposed on the inner side of the lower second pad.

7. The unwinding device according to claim 6, characterized in that, The push drive assembly includes a push motor, a push reducer, and a drive shaft. A first connecting plate is provided on the inner side of two first pads, and a second connecting plate is provided on the inner side of two second pads. The first and second connecting plates are located between the support beam and the two mounting brackets. A first support plate and a second support plate are respectively provided on the outer side of the first and second connecting plates. The push reducer is mounted on one end of the first support plate via a reducer mount. The push motor is mounted on the push reducer, and the output end of the push motor is connected to the input end of the push reducer. A drive gear is sleeved on the output end of the push reducer. The drive shaft... Located between the first connecting plate and the second connecting plate and rotatably connected to the cutter assembly, one end of the drive shaft passes through the through hole of the first connecting plate and the through hole of the first support plate and is fitted with a first drive gear, and the other end of the drive shaft passes through the through hole of the second connecting plate and the through hole of the second support plate and is fitted with a second drive gear. The drive shaft can rotate relative to the first connecting plate, the first support plate, the second connecting plate, the second support plate and the cutter assembly. The inner sides of the two mounting plates are respectively provided with a first rack and a second rack. The drive gear and the first drive gear both mesh with the first rack, and the second drive gear meshes with the second rack.

8. The unwinding device according to claim 1, characterized in that, The flipping frame includes a first body and a second body, which are arranged opposite to each other. One end of each of the two flipping shafts is connected to the outer side of the first body and the outer side of the second body, respectively. The first body and the second body are connected by a flipping crossbeam. Both the first and second unwinding mechanisms include a first unwinding shaft, a second unwinding shaft, a first chuck, a second chuck, a rotation drive assembly, a first movement drive assembly, and a second movement drive assembly. The first and second unwinding shafts are arranged opposite to each other. The first unwinding shaft passes through a first through hole in the first body, and the second unwinding shaft passes through a second through hole in the second body. The first and second chucks are located between the first and second bodies and are arranged opposite to each other. One end of the first chuck and one end of the second chuck are respectively connected to one end of the first unwinding shaft and one end of the second unwinding shaft. The rotation drive assembly is disposed on the second body and is used to drive the second unwinding shaft to rotate. The first movement drive assembly is disposed on the first body and is used to drive the first unwinding shaft to move toward or away from the center of the flipping frame. The second movement drive assembly is disposed on the second body and is used to drive the second unwinding shaft to move toward or away from the center of the flipping frame.

9. The unwinding device according to claim 8, characterized in that, A bushing is rotatably sleeved on the first unwinding shaft, the bushing passes through the first through hole, and a first sliding sleeve is provided in the first through hole, the first sliding sleeve being slidably sleeved on the bushing; The first moving drive assembly includes a moving motor, a moving reducer, a lead screw, a nut, a moving connecting arm, and a guide rod. The moving reducer is disposed inside the first body, and the moving motor is mounted on the moving reducer. The output end of the moving motor is connected to the input end of the moving reducer. The lead screw passes through a first hole in the first body and can rotate relative to the first body. The output end of the moving reducer is connected to one end of the lead screw. The nut is threadedly engaged with the lead screw. The moving connecting arm is sleeved on the nut. One end of the moving connecting arm is sleeved on the other end of the first unwinding shaft and connected to the end of the bushing away from the center of the tilting frame. The other end of the moving connecting arm is sleeved on a linear bearing. The linear bearing is sleeved on the guide rod, and the guide rod is partially disposed within a second hole in the first body.

10. The unwinding device according to claim 8, characterized in that, A second sliding sleeve is rotatably disposed inside the second through hole, and the second sliding sleeve is slidably sleeved on the second unwinding shaft; The rotation drive assembly includes a rotation motor, a rotation reducer, and a transmission structure. The rotation reducer is disposed on the outside of the second body, the rotation motor is disposed on the rotation reducer, the output end of the rotation motor is connected to the input end of the rotation reducer, and the output end of the rotation reducer extends into the second body and is connected to the second sliding sleeve through the transmission structure. The second moving drive assembly includes a cylinder connecting arm and two moving cylinders. The cylinder connecting arm is sleeved on the other end of the second unwinding shaft, and the two moving cylinders are respectively disposed at both ends of the second body. The output ends of the two moving cylinders are respectively connected to the two ends of the cylinder connecting arm.

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