An FPC film cutting device

Abstract

This utility model discloses an FPC film cutting device, comprising: a film feeding assembly including an unwinding roller and a feeding roller group; a cutting assembly including a cutting drive mechanism, a lifting plate, a lower blade holder, an elastic movable module, a tensioning seat, and a first pressure seat. The lifting plate is connected to the cutting drive mechanism, and an upper cutter is provided at the bottom of the lifting plate. The elastic movable module is connected to the lifting plate and the tensioning seat. The tensioning seat is rotatably connected to a rotating shaft, which is provided with a positioning block and a tensioning sheet. A rotating elastic element is connected between the rotating shaft and the tensioning seat. The rotating shaft forms a rotational movement tendency along the reset direction. A first limiting block and a second limiting block are provided inside the tensioning seat. The first limiting block, the positioning block, and the second limiting block are distributed along the reset direction. The tensioning sheet is inclined from top to bottom away from the upper cutter, and the inclination direction of the tensioning sheet is opposite to the reset direction. This utility model can effectively straighten the film material, improve the straightness and reliability of the cutting action, achieve high cutting accuracy, and have a high yield rate of film material cutting.

Description

Technical Field

[0001] This utility model relates to the field of membrane material processing, and in particular to an FPC membrane material cutting device. Background Technology

[0002] FPC, short for Flexible Printed Circuit, is a type of printed circuit board made with polyimide or polyester film as the substrate. It is highly reliable and extremely flexible. It is favored for its excellent characteristics such as light weight, thinness, and ability to be freely bent and folded.

[0003] The manufacturing process of FPC (Flexible Printed Circuit) involves the use of a large amount of membrane material, such as the base layer and surface layer. These materials need to be cut to specified dimensions and then sent to a pre-set station for lamination and other operations. In traditional technology, the membrane material is cut by clamping and conveying it to the cutting area using rollers, where it is then cut by the cutter. Due to the deformable nature of the membrane material, it is prone to deviation when conveying it to the cutter, resulting in a deviation in the cutting trajectory and insufficient cutting accuracy. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an FPC film cutting device that provides stable and reliable stretching and positioning, accurate and reliable cutting action, and high cutting precision.

[0005] An FPC film cutting device according to an embodiment of the present invention includes:

[0006] The film supply assembly includes an unwinding roller and a feeding roller assembly arranged in sequence.

[0007] The cutting assembly includes a cutting drive mechanism, a lifting plate, a lower blade holder, an elastic movable module, a tensioning seat, and a first pressure seat. The lifting plate is connected to the cutting drive mechanism, and an upper cutter is provided at the bottom of the lifting plate. The elastic movable module connects the lifting plate and the tensioning seat to make the tensioning seat move downward. The upper cutter and the tensioning seat are sequentially arranged on the side of the feeding roller group away from the unwinding roller. The lower blade holder is located below the upper cutter, and the first pressure seat is located below the tensioning seat. The tensioning seat is rotatably connected to a rotating shaft. The circumferential surface of the rotating shaft is provided with a positioning block and a tensioning sheet. A rotating elastic element is connected between the rotating shaft and the tensioning seat. The rotating elastic element is used to drive the rotating shaft to move in a direction of rotation along the reset direction. The tensioning seat is provided with a first limiting block and a second limiting block. The first limiting block, the positioning block, and the second limiting block are distributed along the reset direction. The tensioning sheet is inclined from top to bottom away from the upper cutter, and the inclination direction of the tensioning sheet is opposite to the reset direction.

[0008] In this embodiment, the cutting assembly further includes a pre-press plate and a second pressure seat. Two elastic movable modules are provided. The other elastic movable module connects the lifting plate and the pre-press plate to make the pre-press plate move downward. The pre-press plate is located on the side of the upper cutter near the feeding roller group, and the second pressure seat is located below the pre-press plate.

[0009] In this embodiment, the elastic movable module includes a guide post, a linear elastic element, and an anti-detachment block. The lifting plate is provided with a guide hole, the guide post passes through the guide hole, the anti-detachment block is connected to the top of the guide post and is located above the lifting plate, the linear elastic element is sleeved on the outside of the guide post, and the bottom of the guide posts of the two elastic movable modules are respectively connected to the tensioning seat and the pre-pressure plate.

[0010] In this embodiment, the middle part of the compression sheet is arc-shaped and protrudes near the upper cutter.

[0011] In this embodiment, the end of the rotating shaft is provided with a storage groove, and the rotating elastic element is a torsion spring, which is disposed in the storage groove.

[0012] In this embodiment, one end of the tensioning seat is provided with an installation port, and the other end of the tensioning seat is provided with a cover plate for closing the installation port.

[0013] In this embodiment, the FPC film cutting device also includes a C-shaped material collection channel. The material collection inlet of the material collection channel is located on the side of the first pressure seat away from the lower knife seat, and the material collection outlet of the material collection channel is provided with a detachable material collection box, which is located below the feeding roller assembly.

[0014] In this embodiment, the opening area of ​​the aggregate inlet is larger than the opening area of ​​the aggregate outlet.

[0015] In this embodiment, the feeding roller assembly includes a feeding motor, a driving roller, and a driven roller. The driving roller is connected to the feeding motor, and the driven roller abuts against the top of the driving roller.

[0016] In this embodiment, the film supply assembly also includes a guide roller disposed between the unwinding roller and the feeding roller assembly.

[0017] The embodiments of this utility model have at least the following beneficial effects:

[0018] The elastic movable module drives the tensioning plate to press against the first pressure seat, which can pre-press and position the film material before cutting. This provides a stable positioning basis for the film material and effectively improves the stability of the cutting action. The floating buffer performance of the elastic movable module can effectively improve the reliability of the pressing and positioning action. The rotational pre-tightening connection between the rotating shaft and the tensioning seat is achieved by rotating the elastic element. The tensioning plate begins to tilt away from the upper cutter at the connection point of the rotating shaft, which can provide a reliable pre-guiding effect for the movement of the tensioning plate. As the tensioning seat descends with the lifting plate, the bottom of the tensioning plate continuously presses against the first pressure seat and moves away from the upper cutter. In conjunction with the feeding roller group, it can effectively straighten the film material and ensure that the preset cutting trajectory of the film material is aligned with the upper cutter. The bidirectional straightening and positioning can effectively improve the straightness and reliability of the cutting action, resulting in high cutting accuracy and a high yield of film material. The two limit blocks can effectively control the relative position between the rotating shaft and the tensioning seat, thereby improving the reliability of the tensioning action of the tensioning plate. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a three-dimensional structural diagram of the FPC film cutting device according to an embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the FPC film cutting device according to an embodiment of the present utility model from another perspective.

[0022] Figure 3 This is a top view of the FPC film cutting device according to an embodiment of the present invention;

[0023] Figure 4 For along Figure 3 A schematic diagram of the cross-sectional structure of line A-A';

[0024] Figure 5 for Figure 4 A magnified structural diagram of B in the diagram;

[0025] Figure 6 This is an exploded structural diagram of the tensioning seat and rotating shaft in the FPC film cutting device according to an embodiment of the present invention.

[0026] Figure 7 This is an exploded structural diagram of the tensioning seat and rotating shaft in the FPC film cutting device according to an embodiment of the present invention, viewed from another perspective.

[0027] Figure label:

[0028] Film feeding assembly 100, unwinding roller 110, feeding roller group 120, feeding motor 121, driving roller 122, driven roller 123, and guide roller 130;

[0029] Cutting assembly 200, cutting drive mechanism 210, lifting plate 220, upper cutter 221, guide hole 222, lower cutter holder 230, elastic movable module 240, guide post 241, linear elastic element 242, anti-detachment block 243, tensioning seat 250, first limiting block 251, second limiting block 252, mounting port 253, cover plate 254, rotating shaft 260, positioning block 261, tensioning sheet 262, rotating elastic element 263, storage groove 264, first pressing seat 270, pre-pressing plate 280, second pressing seat 290;

[0030] Material collection channel 300, material collection inlet 301, material collection outlet 302, material collection box 310. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, if the wire sleeve or bracket is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] FPC, short for Flexible Printed Circuit, is a type of printed circuit board made with polyimide or polyester film as the substrate. It is highly reliable and extremely flexible. Its advantages include light weight, thinness, and the ability to be freely bent and folded. The manufacturing process of FPC involves the use of a large amount of film material. For example, the base layer and surface layer of the FPC structure need to be cut to specified dimensions and then sent to a designated station for lamination and other operations.

[0036] In traditional technology, the cutting of membrane material is carried out by rollers clamping and conveying it to the area where the cutter is located, and then the cutter cuts the membrane material. Due to the deformable nature of the membrane material, the membrane material is prone to deviate when it is conveyed to the cutter, which leads to deviation of the cutting trajectory and insufficient cutting accuracy. In addition, the membrane material is prone to form an unsupported suspended section between the feeding rollers and the cutting point. The impact force at the moment of cutting causes the membrane material to rebound or shift, resulting in dimensional deviations.

[0037] The following is for reference only. Figure 1 To be continued Figure 7 This invention describes an FPC film cutting device according to an embodiment of the present invention, which has a stable and reliable stretching and positioning effect, a straight and reliable cutting action, and high cutting precision.

[0038] Reference Figures 1 to 7 An FPC film cutting device according to an embodiment of the present invention includes a film feeding assembly 100 and a cutting assembly 200, both connected to a frame:

[0039] The film supply assembly 100 includes an unwinding roller 110 and a feeding roller group 120 arranged sequentially along the film material forward direction. The feeding roller group 120 is used to clamp the film material and drive the film material forward. Both the unwinding roller 110 and the feeding roller group 120 are connected to the frame. The unwinding roller 110 is driven to rotate by an unwinding motor to realize unwinding. The feeding roller group 120 is driven to pull the film material forward along the film material forward direction by a feeding motor 121.

[0040] The cutting assembly 200 includes a cutting drive mechanism 210, a lifting plate 220, a lower blade holder 230, an elastic movable module 240, a tensioning seat 250, and a first pressing seat 270. The cutting drive mechanism 210, lower blade holder 230, and first pressing seat 270 are all connected to the frame. The lifting plate 220 is connected to the cutting drive mechanism 210. The cutting drive mechanism 210 can be configured as a cylinder. An upper cutting blade 221 is provided at the bottom of the lifting plate 220. The two ends of the elastic movable module 240 are respectively connected to the bottom of the lifting plate 220 and the tensioning seat 250, causing the tensioning seat 250 to have a downward movement tendency. 240 is used to cause the tensioning seat 250 to move away from the lifting plate 220. The upper cutter 221 and the tensioning seat 250 are sequentially arranged on the side of the feeding roller group 120 away from the unwinding roller 110. That is, the upper cutter 221 is located on the side of the feeding roller group 120 away from the unwinding roller 110, and the tensioning seat 250 is located on the side of the upper cutter 221 away from the feeding roller group 120. The lower cutter holder 230 is located below the upper cutter 221. The lower cutter holder 230 can be set as a silicon carbide ceramic cutter holder, and the upper cutter 221 is a high-speed steel cutter. The hardness difference between the high-speed steel cutter and the silicon carbide ceramic cutter holder can effectively improve the stability of the cutting action. Furthermore, it can effectively extend the service life of continuous operation. The first pressure seat 270 is located below the tensioning seat 250. The bottom of the tensioning seat 250 is provided with a clearance opening. The tensioning seat 250 is rotatably connected to a rotating shaft 260. The circumferential surface of the rotating shaft 260 is provided with a positioning block 261 and a tensioning plate 262 passing through the clearance opening. The tensioning plate 262 is connected to the bottom of the rotating shaft 260. A rotating elastic element 263 is connected between the rotating shaft 260 and the tensioning seat 250. The rotating elastic element 263 is used to drive the rotating shaft 260 to form a rotational movement tendency along the reset direction. The tensioning seat 250 is provided with [missing information - likely referring to a specific type of support or feature] located on opposite sides of the positioning block 261. The first limiting block 251 and the second limiting block 252 are sequentially arranged outside the circumferential surface of the rotating shaft 260 along the reset direction. The tensioning plate 262 is inclined from top to bottom away from the upper cutter 221, and the inclination direction of the tensioning plate 262 from top to bottom is opposite to the reset direction. That is, under the action of the elastic pre-tightening force of the rotating elastic element 263, the bottom of the tensioning plate 262 forms a tendency to move towards the upper cutter 221, which can ensure that after the tensioning plate 262 cooperates with the first pressure seat 270 to straighten the film material, it can be reset under the action of the elastic pre-tightening force of the rotating elastic element 263.

[0041] During operation, the membrane material roll is mounted on the unwinding roller 110. The head of the membrane material roll passes through the feeding roller assembly 120, which drives the membrane material forward. The unwinding roller 110 cooperates to feed out the membrane material roll. Under the traction of the feeding roller assembly 120, the membrane material enters between the upper cutter 221 and the lower cutter seat 230, and between the tensioning plate 262 and the first pressure seat 270. Without other forces acting on it, the bottom of the tensioning plate 262 is located below the upper cutter 221. The cutting drive mechanism 210 drives the lifting plate 220 to descend. The bottom of the tensioning plate 262 contacts the membrane material first. Under the action of the elastic movable module 240, the tensioning plate continuously presses the membrane material downwards onto the first pressure seat 270. Because the tensioning plate 262 is inclined and its top is connected to the circumferential surface of the rotating shaft 260, during the compression and descent process, the membrane material is pressed against the first pressure seat 270. Due to the unbalanced force on the tensioning plate 262, the bottom of the tensioning plate 262 continuously moves away from the upper cutter 221, thereby further straightening the film material. Under the driving action of the tensioning plate 262, the rotating shaft 260 rotates in the opposite direction of the reset direction until the positioning block 261 abuts against the first limiting block 251. The first limiting block 251, in conjunction with the positioning block 261, restricts the position of the tensioning plate 262, ensuring that the tensioning plate 262, in conjunction with the first pressing seat 270, achieves the effect of straightening, pressing, and positioning the film material. As the lifting plate 220 continuously descends, the upper cutter 221, in conjunction with the lower cutter seat 230, cuts the film material. The lifting drive mechanism drives the lifting plate 220 to rise and reset. Both the upper cutter 221 and the tensioning plate 262 detach from the film material. The tensioning plate 262 resets under the action of the rotating elastic element 263 until the positioning block 261 abuts against the second limiting block 252.

[0042] The elastic movable module 240 drives the tensioning plate 262 to press the first pressure seat 270, which can pre-press and position the film material before cutting. This provides a stable positioning basis for the film material during cutting, effectively improving the stability of the cutting action and preventing the film material from shifting between the upper cutter 221 during cutting. The floating buffer performance of the elastic movable module 240 can effectively improve the reliability of the pressing and positioning action. The rotational pre-tightening connection between the rotating shaft 260 and the tensioning seat 250 is achieved by rotating the elastic element 263, and the tensioning plate 262 begins to tilt away from the upper cutter 221 at the connection point of the rotating shaft 260, which can provide a reliable pre-guiding effect for the movement of the tensioning plate 262. As the tensioning seat 250 descends with the lifting plate 220, the bottom of the tensioning plate 262 does not... The first pressing seat 270 is pressed tightly, and the bottom of the tensioning plate 262 moves away from the upper cutter 221. In conjunction with the feeding roller group 120, the film material can be effectively straightened, ensuring that the preset cutting trajectory of the film material is aligned with the upper cutter 221. The bidirectional straightening and positioning can effectively improve the straightness and reliability of the cutting action, resulting in high cutting accuracy and a high yield of film material. The relative position between the rotating shaft 260 and the tensioning seat 250 can be effectively controlled by the two limit blocks, thereby improving the reliability of the tensioning action of the tensioning plate 262. At the same time, it can ensure that the tensioning plate 262, after being reset, remains in a guide preparation state that is tilted away from the upper cutter 221 from top to bottom. When the upper cutter 221 is pressed down, the tensioning seat 250 is slightly raised relative to the lifting plate 220 to release local stress, which can effectively avoid damage to the film material.

[0043] Understandably, to prevent the cutting shock wave from propagating back along the film material to the feeding roller group 120 during cutting, causing slippage and relative displacement between the feeding roller group 120 and the film material, the cutting assembly 200 also includes a pre-pressing plate 280 and a second pressing seat 290. Two elastic movable modules 240 are provided and symmetrically arranged on opposite sides of the upper cutter 221. One elastic movable module 240 is connected at both ends to the pressing seat 250 and the bottom of the lifting plate 220, respectively. The other elastic movable module 240 is connected at both ends to the bottom of the lifting plate 220 and the pre-pressing plate 280, respectively, so that the pre-pressing plate 280 forms a downward movement trend. That is, the other elastic movable module 240 is used to make the pressing seat form a movement trend away from the lifting plate 220. The pre-pressing plate 280 is located on the side of the upper cutter 221 near the feeding roller group 120, and the second pressing seat 290 is located below the pre-pressing plate 280.

[0044] The pre-press plate 280, in conjunction with the second pressure seat 290, presses and positions the film material upstream of the upper cutter 221. The tensioning plate 262, in conjunction with the first pressure seat 270, straightens and presses and positions the film material downstream of the upper cutter 221. The pre-press plate 280, in conjunction with the second pressure seat 290, presses the film material firmly, thereby preventing the film material from slipping at the feeding roller group 120 during cutting. This effectively controls the cumulative dimensional error caused by slippage, thus effectively improving the stability of the cutting action.

[0045] It is understood that the elastic movable module 240 includes a guide post 241, a linear elastic element 242, and an anti-detachment block 243. The lifting plate 220 is provided with a guide hole 222, the guide post 241 passes through the guide hole 222, the anti-detachment block 243 is connected to the top of the guide post 241 and is located above the lifting plate 220, the linear elastic element 242 is sleeved on the outside of the guide post 241, the bottom of the guide post 241 corresponding to the two elastic movable modules 240 is connected to the tensioning seat 250 and the pre-pressure plate 280 respectively, the two ends of the linear elastic element 242 of one elastic movable module 240 abut against the lifting plate 220 and the tensioning seat 250 respectively, the two ends of the linear elastic element 242 of the other elastic movable module 240 are connected to the lifting plate 220 and the pre-pressure plate 280 respectively, wherein the linear elastic element 242 can be a compression spring.

[0046] Understandably, the middle part of the tensioning sheet 262 is curved and protrudes near the upper cutter 221. The curved tensioning sheet 262 can effectively form a dynamic roller pressing and straightening positioning effect on the membrane material. This can not only effectively reduce the membrane material displacement caused by the tensioning sheet 262 loosening, thereby effectively improving the stability of the positioning action, but also effectively avoid the tensioning sheet 262 causing scratches and other damage to the membrane material.

[0047] Understandably, the end of the rotating shaft 260 is provided with a receiving groove 264, and the rotating elastic element 263 is a torsion spring. The torsion spring is disposed in the receiving groove 264, and its two ends are respectively engaged with the rotating shaft 260 and the tensioning seat 250. The inner walls of both the receiving groove 264 and the tensioning seat 250 are provided with locking structures for locking and fixing the ends of the torsion spring, thereby ensuring that the rotational preload of the torsion spring can be effectively transmitted. Preferably, the receiving groove 264 can extend to the end of the tensioning seat 250, thereby effectively improving the reliability of the position of the receiving groove 264.

[0048] It is understandable that the tensioning base 250 has an installation port 253 at one end and a cover plate 254 at the other end for closing the installation port 253. By setting the installation port 253 at the end of the tensioning base 250, the installation of the rotating shaft 260 and the rotating elastic element 263 can be easily realized. The cover plate 254 can be fixed to the tensioning base 250 by means of screws and screw holes, making the assembly operation convenient.

[0049] Understandably, the FPC film cutting device also includes a C-shaped material collection channel 300 connected to the frame. The material collection inlet 301 of the material collection channel 300 is located on the side of the first pressure seat 270 away from the lower cutter seat 230. The material collection outlet 302 of the material collection channel 300 is provided with a material collection box 310 detachably connected to the frame. The material collection box 310 is located below the feeding roller group 120. The C-shaped material collection channel 300 can effectively deliver the cut film material, avoid blockage, and effectively improve the smoothness of the film material output after cutting.

[0050] The C-shaped collection channel 300 guides and flips the cut membrane material so that it can smoothly reach the collection box 310. The collection box 310 is located below the feeding roller group 120, which can effectively improve space utilization and reduce the footprint of the device, thereby reducing the land cost of the application. The inner wall of the collection channel 300 is covered with a Teflon coating. Teflon has good lubrication properties, which can effectively reduce the friction between the membrane material and the collection channel 300, thereby improving the smoothness and reliability of the membrane material's movement in the collection channel 300.

[0051] Specifically, the opening area of ​​the material inlet 301 is larger than the opening area of ​​the material outlet 302, and the cross-sectional area of ​​the material channel 300 gradually narrows from the material inlet 301 to the material outlet 302, which can form a material collection effect with high fault tolerance when entering and high accuracy when outputting.

[0052] It is understood that the feeding roller assembly 120 includes a feeding motor 121, and a driving roller 122 and a driven roller 123 that are parallel to each other. The driving roller 122 is connected to the feeding motor 121, and the circumferential surface of the driven roller 123 abuts against the circumferential surface of the driving roller 122. The feeding motor 121 is used to drive the driving roller 122 to rotate, thereby cooperating with the driven roller 123 to clamp and pull the film material forward.

[0053] It is understood that the film supply assembly 100 also includes a guide roller 130 disposed between the unwinding roller 110 and the feeding roller group 120. Depending on actual needs, multiple guide rollers 130 may be provided to assist in positioning the film material.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An FPC film material cutting device, characterized by, include: The film supply assembly (100) includes an unwinding roller (110) and a feeding roller group (120) arranged in sequence. The cutting assembly (200) includes a cutting drive mechanism (210), a lifting plate (220), a lower blade holder (230), an elastic movable module (240), a tensioning seat (250), and a first pressure seat (270). The lifting plate (220) is connected to the cutting drive mechanism (210). An upper cutter (221) is provided at the bottom of the lifting plate (220). The elastic movable module (240) connects the lifting plate (220) and the tensioning seat (250) to make the tensioning seat (250) move downward. The upper cutter (221) and the tensioning seat (250) are sequentially arranged on the side of the feeding roller group (120) away from the unwinding roller (110). The lower blade holder (230) is located below the upper cutter (221), and the first pressure seat (270) is located on the tensioning seat. Below the seat (250), the tensioning seat (250) is rotatably connected to a rotating shaft (260). The circumferential surface of the rotating shaft (260) is provided with a positioning block (261) and a tensioning plate (262). A rotating elastic element (263) is connected between the rotating shaft (260) and the tensioning seat (250). The rotating elastic element (263) is used to drive the rotating shaft (260) to form a rotational movement trend along the reset direction. The tensioning seat (250) is provided with a first limiting block (251) and a second limiting block (252). The first limiting block (251), the positioning block (261) and the second limiting block (252) are distributed along the reset direction. The tensioning plate (262) is inclined from top to bottom away from the upper cutter (221). The inclination direction of the tensioning plate (262) is opposite to the reset direction.

2. The FPC film material cutting device according to claim 1, wherein, The cutting assembly (200) also includes a pre-press plate (280) and a second pressure seat (290). Two elastic movable modules (240) are provided. The other elastic movable module (240) connects the lifting plate (220) and the pre-press plate (280) so that the pre-press plate (280) forms a downward movement trend. The pre-press plate (280) is located on the side of the upper cutter (221) near the feeding roller group (120). The second pressure seat (290) is located below the pre-press plate (280).

3. The FPC film material cutting device according to claim 2, characterized in that, The elastic movable module (240) includes a guide post (241), a linear elastic element (242), and an anti-detachment block (243). The lifting plate (220) is provided with a guide hole (222). The guide post (241) passes through the guide hole (222). The anti-detachment block (243) is connected to the top of the guide post (241) and is located above the lifting plate (220). The linear elastic element (242) is sleeved on the outside of the guide post (241). The bottoms of the guide posts (241) of the two elastic movable modules (240) are respectively connected to the tensioning seat (250) and the pre-pressure plate (280).

4. The FPC film material cutting device according to claim 1, wherein, The middle part of the tensioning sheet (262) is arc-shaped and protrudes near the upper cutter (221).

5. The FPC film material cutting device according to claim 1, wherein, The end of the rotating shaft (260) is provided with a storage groove (264), and the rotating elastic element (263) is a torsion spring, which is disposed in the storage groove (264).

6. The FPC film material cutting device according to claim 5, wherein, One end of the tensioning seat (250) is provided with an installation port (253), and the other end of the tensioning seat (250) is provided with a cover plate (254) for closing the installation port (253).

7. The FPC film material cutting device according to claim 1, wherein, It also includes a C-shaped material collection channel (300), the material collection inlet (301) of which is located on the side of the first pressure seat (270) away from the lower knife seat (230), and the material collection outlet (302) of which is provided with a detachable material collection box (310), which is located below the feeding roller group (120).

8. The FPC film material cutting device according to claim 7, characterized in that, The opening area of ​​the aggregate inlet (301) is larger than the opening area of ​​the aggregate outlet (302).

9. The FPC film material cutting device according to claim 1, wherein, The feeding roller assembly (120) includes a feeding motor (121), a drive roller (122) and a driven roller (123). The drive roller (122) is connected to the feeding motor (121), and the driven roller (123) abuts against the drive roller (122).

10. The FPC film material cutting device according to claim 1, wherein, The film supply assembly (100) also includes a guide roller (130) disposed between the unwinding roller (110) and the feed roller group (120).

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