Prepreg rim charge cutting device

Abstract

The invention provides a prepreg rim charge cutting device which comprises a machine frame, two sets of translation seats capable of sliding relatively are arranged on the machine frame, a mounting frame is arranged at the bottom of the machine frame, a conveying mechanism for intermittently conveying a material belt is further arranged on the machine frame, a bearing plate and a lifting frame capable of ascending and descending are arranged on the translation seats, and a pressing assembly is arranged on the lifting frame. A cutting groove is formed in the bearing plate, a cutting mechanism is arranged at the bottom of the bearing plate in a transverse sliding and lifting mode, the cutting end of the cutting mechanism can stretch out of the cutting groove after the cutting mechanism ascends, and a linkage mechanism connected with the conveying mechanism, the lifting frame and the cutting mechanism is arranged on the mounting frame. The linkage mechanism drives the cutting mechanism to ascend and slide after the material belt is intermittently conveyed, and meanwhile the lifting frame is driven to descend so that the edge of the material belt on the bearing plate can be pressed through the pressing assembly. When the device is used for cutting the prepreg, the material belt is not easy to shake and displace, so that the cutting effect of the leftover materials of the prepreg is improved, and the defective rate is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of prepreg processing, and in particular to a prepreg edge material cutting device. Background Art

[0002] As a key material in the production of multilayer printed circuit boards (PCBs), prepreg quality directly impacts the performance and reliability of the PCBs. During prepreg processing, trimming is crucial for ensuring subsequent processing precision and product quality. Accurate and stable trimming effectively improves prepreg utilization and the stability of the subsequent lamination process.

[0003] For example, the Chinese patent with publication number CN219837886U provides a dust-eliminating PP automatic cutting device. The device preheats the epoxy resin on the surface of the semi-cured sheet through a first laser emitter, and then cuts it into strips longitudinally with a slitting knife. The epoxy resin coating is preheated by a second laser emitter, and the semi-cured sheet is cut transversely with a cross-cutting knife to ensure transverse and longitudinal cutting of the semi-cured sheet. The laser preheating turns the epoxy resin layer into a resin state, and the cutting process does not generate dust. The waste wheel is used to wind and collect the burrs.

[0004] However, through analysis of the existing technology, it was found that most of the existing semi-cured sheet edge cutting devices cut the edge materials during the process of stretching the rolled semi-cured sheet, and this cutting method cannot fix the semi-cured sheet during the transportation and cutting process, which easily causes the semi-cured sheet to shift during the cutting process, thereby resulting in a decrease in the cutting effect and affecting the quality of the semi-cured sheet product. Therefore, a semi-cured sheet edge cutting device is proposed to solve the above problem. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention proposes a semi-cured sheet edge cutting device to solve the technical problem that the existing semi-cured sheet edge cutting devices proposed in the above background technology mostly cut the edge materials during the process of stretching the rolled semi-cured sheet, and this cutting method cannot fix the semi-cured sheet during the transportation and cutting process, which easily causes the semi-cured sheet to shift during the cutting process, thereby resulting in a decrease in cutting effect and affecting the quality of the semi-cured sheet finished product.

[0006] To achieve the above object, the present invention provides the following technical solution: a prepreg edge cutting device, comprising: The frame is provided with support bases on both sides and a mounting frame at the bottom. The frame is also provided with a conveying mechanism for intermittently conveying the material belt, and a slide is provided on the frame; Two groups of translation seats are provided, and are relatively slidably arranged on the two groups of support seats. The translation seats are provided with a supporting plate and a lifting frame that can be raised and lowered. The lifting frame is provided with a pressing component. The supporting plate is provided with a cutting groove. The supporting plate can be laterally slidably arranged in the sliding groove and is flush with the surface of the frame; A cutting mechanism is disposed on the bottom of the supporting plate in a manner that is slidable and liftable, and a cutting end of the cutting mechanism can extend out of the cutting groove after the cutting mechanism is raised; and A linkage mechanism is arranged on the mounting frame and is connected to the conveying mechanism, the lifting frame and the cutting mechanism to drive the cutting mechanism to rise and slide after intermittently conveying the material strip, and at the same time drive the lifting frame to descend to press the edge of the material strip on the support plate through the pressing assembly.

[0007] In a preferred embodiment, the pressing assembly includes: A mounting column, which is escalably arranged on the lifting frame; a pressure plate, disposed at the end of the mounting post, with a first elastic member disposed between the pressure plate and the lifting frame; and A protective pad is arranged at the bottom of the pressing plate.

[0008] In a preferred embodiment, a liftable mounting frame is provided on the frame, a slider is provided on the lifting frame, and the slider is slidably clamped in the mounting frame. A rotatable threaded rod is also provided on the mounting frame, and the threaded rod is threadedly connected to the slider.

[0009] In a preferred embodiment, the cutting mechanism includes: A sliding seat, which is slidably disposed at the bottom of the supporting plate; A mounting seat is movably mounted on the sliding seat, wherein a cutting knife driven by a high-speed motor is mounted on the mounting seat, the cutting knife is located in the cutting groove and is staggered with the pressing plate; and The driving assembly is arranged at the bottom of the supporting plate and connected to the mounting seat, so as to drive the cutting knife to rise and protrude from the cutting groove when the sliding seat is close to the material roll, and to drive the cutting knife to descend and retract when the sliding seat is away from the material roll.

[0010] In a preferred embodiment, the drive assembly includes: A vertical plate, disposed at the bottom of the supporting plate, and having two sets of parallel flat grooves and two sets of parallel inclined grooves, wherein the two sets of flat grooves and the two sets of inclined grooves form a parallelogram, and the ends of the flat grooves are connected to one set of the inclined grooves in a stepped manner; and The guide post is slidably arranged on the mounting seat along its axis and is clamped in the flat groove. The guide post is connected to the mounting seat through a second elastic member.

[0011] In a preferred embodiment, the conveying mechanism includes: A tensioning roller rotatably disposed at one end of the frame; Conveyor rollers are arranged in two groups at intervals and are rotatably arranged on the frame, with a gap between the two groups of conveyor rollers for the feed belt to pass through, and the two groups of conveyor rollers are connected by a flat gear pair; A driving motor is fixedly mounted on the mounting frame; and The transmission assembly is arranged on the output shaft of the driving motor and is connected to one group of the conveying rollers to drive the group of the conveying rollers to rotate intermittently.

[0012] In a preferred embodiment, the transmission assembly includes: a spur gear rotatably disposed on the mounting frame; an arc-shaped rack, disposed on the output shaft of the drive motor and capable of intermittently meshing with the spur gear; a drive shaft rotatably disposed on the frame and connected to one set of the conveying rollers via a belt drive mechanism; and A bevel gear pair is connected to the spur gear and the drive shaft.

[0013] In a preferred embodiment, the linkage mechanism includes: a reciprocating drive assembly, disposed on the output shaft of the drive motor and connected to the sliding seat to drive the sliding seat to slide reciprocally; and A control component is arranged on the output shaft of the driving motor and connected to the mounting frame to drive the mounting frame to descend after the arc-shaped rack is disengaged from the spur gear.

[0014] In a preferred embodiment, the reciprocating drive assembly includes: A first driving frame is slidably disposed at the bottom of the frame, and a positioning rod is provided on the sliding seat, and the positioning rod is slidably disposed through the end of the first driving frame; and The first driving column is eccentrically arranged on the output shaft of the driving motor and is slidably clamped in the first driving frame.

[0015] In a preferred embodiment, the control component includes: A driving wheel is rotatably mounted on the mounting frame and has a spiral groove formed on its circumference. Both ends of the driving wheel are provided with an eccentrically arranged second driving column. A limiting wheel is provided at the end of the driving wheel, and two sets of positioning grooves are provided on the limiting wheel at intervals, wherein the depth of the spiral groove is greater than that of the positioning groove; A second driving frame is provided on the mounting frame, and a third elastic member is provided between the second driving frame and the mounting frame, and the second driving column is slidably clamped in the second driving frame; and The arc frame is arranged on the output shaft of the driving motor and can be clamped in the positioning groove. A driving rod is arranged between the two ends of the arc frame, and the driving rod can be clamped in the spiral groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: During use, the device mounts a rolled prepreg coil on a frame and intermittently conveys the material strip via a conveyor mechanism. The lifting frame can be controlled to descend to clamp the edges of the material strip. The cutting mechanism can also be controlled to slide and lift horizontally, causing the cutting mechanism to extend from the cutting slot after ascending to cut the material strip. A linkage mechanism ensures that the cutting mechanism only extends from the cutting slot during ascending and sliding operations. The lifting frame can also be automatically controlled to descend during the cutting process to cooperate with the support plate to press the edges of the material strip, thereby ensuring that the material strip is firmly fixed during the cutting process and without affecting the conveying of the material strip. Compared to traditional methods that directly cut during conveying, this device is less likely to cause the material strip to shake and move during cutting, thereby improving the efficiency of prepreg edge cutting and reducing the rate of defective products. Furthermore, by sliding and fixing the translation seat on the support seat, the translation seat drives the support plate and the cutting mechanism at its bottom to move synchronously during movement to accommodate cutting of material strips of different widths, thereby expanding the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a prepreg edge cutting device provided by the present invention; Figure 2 This is a schematic structural diagram of a frame in a prepreg edge cutting device according to the present invention; Figure 3 This is a cross-sectional view of a prepreg edge cutting device according to the present invention; Figure 4 This is a schematic diagram of the internal structure of a prepreg edge cutting device according to the present invention; Figure 5 This is a schematic structural diagram of a translation frame in a prepreg edge cutting device according to the present invention; Figure 6 for Figure 5 A magnified schematic diagram of area A in the middle; Figure 7 This is a schematic diagram of the installation structure of a press plate in a prepreg edge cutting device of the present invention; Figure 8 This is a schematic diagram of the installation structure of parts on a driving motor and its output shaft in a prepreg edge cutting device of the present invention; Figure 9 Schematic diagram of the installation structure of a cutting wheel in a prepreg edge cutting device of the present invention; Reference numerals: 1. Frame; 2. Tensioning roller; 3. Conveyor roller; 4. Flat gear pair; 5. Mounting frame; 6. Support seat; 7. Slide groove; 8. Translation seat; 9. Support plate; 10. Cutting groove; 11. Vertical plate; 12. Flat groove; 13. Inclined groove; 14. Lifting frame; 15. Mounting column; 16. Press plate; 17. Protective pad; 18. Slider; 19. Mounting frame; 20. Threaded rod; 21. Second drive frame; 22. Sliding seat; 23. Positioning rod; 24. Mounting seat; 25. Cutting knife; 26. Guide column; 27. First drive frame; 28. Drive motor; 29. ​​Arc frame; 30. Drive rod; 31. Arc rack; 32. Drive wheel; 33. Limiting wheel; 34. Positioning groove; 35. Spiral groove; 36. First drive column; 37. Second drive column; 38. Spur gear; 39. Bevel gear pair; 40. Drive shaft. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0020] Example: like Figure 1 、 3As shown in , 8, the present invention provides a semi-cured sheet edge cutting device, including a frame 1, support seats 6 are provided on both sides of the frame 1, a mounting frame 5 is provided at the bottom of the frame 1, and a conveying mechanism for intermittently conveying a material belt is also provided on the frame 1, and the conveying mechanism includes a tensioning roller 2 rotatably provided at one end of the frame 1, two groups of conveying rollers 3 are rotatably provided on the frame 1, a gap is provided between the two groups of conveying rollers 3 for the feeding belt to pass through, and the two groups of conveying rollers 3 are connected by a flat gear pair 4, a driving motor 28 is fixedly provided on the mounting frame 5, and a transmission assembly is provided on the output shaft of the driving motor 28, and the transmission assembly is connected to one group of conveying rollers 3 to drive the group of conveying rollers 3 to rotate intermittently. The transmission assembly includes a spur gear 38 rotatably provided on the mounting frame 5, an arcuate rack 31 is provided on the output shaft of the drive motor 28, and the arcuate rack 31 can intermittently engage with the spur gear 38. A drive shaft 40 is rotatably provided on the frame 1, and the drive shaft 40 is connected to one group of conveyor rollers 3 through a belt drive mechanism. The spur gear 38 and the drive shaft 40 are connected through a bevel gear pair 39.

[0021] When the cutting device is in use, the rolled semi-cured sheet is installed on the frame 1, and the arc rack 31 can be controlled to rotate by the driving motor 28. The arc rack 31 intermittently controls the rotation of the spur gear 38 during the rotation process. The spur gear 38 controls the intermittent rotation of the drive shaft 40 through the bevel gear pair 39. During the rotation process, the drive shaft 40 can control the gap rotation of one group of conveying rollers 3 through the belt transmission mechanism. Under the action of the flat gear pair 4, the two groups of conveying rollers 3 are controlled to rotate synchronously to intermittently convey the material strip. By adjusting the transmission ratio of the belt transmission mechanism, the length of the material strip conveyed each time can be controlled to be the same as the cutting length, so as to perform continuous cutting of the material strip.

[0022] like Figure 1 、 2 As shown in Figures 3 and 7, in this embodiment, a slide groove 7 is provided on the frame 1, and two sets of translation seats 8 are slidably provided on the two sets of support seats 6. A support plate 9 and a lift frame 14 are provided on the translation seat 8. A pressing assembly is provided on the lift frame 14. A cutting groove 10 is provided on the support plate 9. The support plate 9 is slidably provided in the slide groove 7 and is flush with the surface of the frame 1. The pressing assembly includes a mounting post 15 that is slidably provided on the lift frame 14. A pressing plate 16 is provided at the end of the mounting post 15. A first elastic member is provided between the pressing plate 16 and the lift frame 14. A protective pad 17 is provided at the bottom of the pressing plate 16.

[0023] During the conveying process, both sides of the material belt are located on the supporting plate 9. In the gap of the conveying material belt, the lifting frame 14 can be controlled to move downward to drive the pressure plate 16 to move downward. When the pressure plate 16 moves down and contacts the material belt, it is blocked by the supporting plate 9 and cannot continue to move. The lifting frame 14 continues to move downward and applies pressure to the material belt under the action of the first elastic member, thereby fixing the edge of the material belt to ensure that the material will not be displaced during the cutting process, thereby improving the cutting effect.

[0024] like Figure 4 、 7 As shown in Figures 9 and 9, in this embodiment, a cutting assembly is provided at the bottom of the support plate 9, which can slide horizontally and be raised and lowered. When the cutting assembly is raised, its cutting end can extend out of the cutting groove 10. A liftable mounting frame 19 is provided on the frame 1, and a slider 18 is provided on the lifting frame 14. The slider 18 is slidably mounted within the mounting frame 19. The mounting frame 19 is also provided with a rotatable threaded rod 20, which is threadedly connected to the slider 18. By rotating the threaded rod 20, the slider 18 can be driven to slide within the mounting frame 19, thereby driving the lifting frame 14, the support plate 9, and the cutting assembly to slide simultaneously, thereby synchronously adjusting the pressing position and cutting position, facilitating the trimming of strips of different widths.

[0025] like Figure 4 、 5 As shown in Figures 6 and 9, in this embodiment, the cutting mechanism includes a sliding seat 22 that is laterally slidable and disposed at the bottom of the support plate 9. A mounting seat 24 is disposed on the sliding seat 22 so as to be liftable. A cutting blade 25 driven by a high-speed motor is disposed on the mounting seat 24. The cutting blade 25 is located within the cutting groove 10 and is staggered relative to the pressure plate 16. A drive assembly connected to the mounting seat 24 is also disposed at the bottom of the support plate 9. The drive assembly drives the cutting blade 25 upward to protrude out of the cutting groove 10 when the sliding seat 22 approaches the material roll, and drives the cutting blade 25 downward to retract when the sliding seat 22 moves away from the material roll. The driving assembly includes a vertical plate 11 arranged at the bottom of the supporting plate 9. Two groups of parallel flat grooves 12 and two groups of parallel inclined grooves 13 are provided on one side of the vertical plate 11. The two groups of flat grooves 12 and the two groups of inclined grooves 13 form a parallelogram, and the ends of the flat grooves 12 are connected to one of the groups of inclined grooves 13 in a stepped manner. A guide column 26 is slidably provided on the mounting seat 24, and the end of the guide column 26 is clamped in the flat groove 12. The guide column 26 is connected to the mounting seat 24 through a second elastic member.

[0026] During the lateral reciprocating sliding process of the sliding seat 22, the mounting seat 24 can be driven to slide along with it, and the mounting seat 24 can be raised and lowered on the sliding seat 22, so that the cutting knife 25 can rise and protrude outside the cutting groove 25 to cut the material strip. During the conveying process of the material strip, the cutting knife 25 can be controlled to be retracted to avoid cutting the material strip in a relaxed state, ensuring that the material strip is in a fixed state each time it is cut, so as to continuously cut the edge of the material strip and improve the cutting effect. In the initial state, the guide post 26 is stuck at the intersection of the flat groove 12 and the inclined groove 13. When the sliding seat 22 slides in the direction close to the material roll, the guide post 26 is driven to move up and slide in the upper set of flat grooves 12 through the guidance of the stepped connecting section and the inclined groove 13, thereby driving the cutting knife 25 to move up and protrude from the cutting groove 10. When the sliding seat 22 moves to the extreme position and slides in the opposite direction, the guide post 26 is stuck into the other set of inclined grooves 13 under the action of the stepped connecting end at the other end through the second elastic member, and is guided by the set of inclined grooves 13 to move down until it is stuck and slides in the lower set of flat grooves 12 to retract and reset the cutting knife 10.

[0027] like Figure 4 、 5 As shown in Figures 9 and 9, in this embodiment, the mounting frame 5 is provided with a linkage mechanism connected to the conveying mechanism, the lifting frame 14, and the cutting mechanism. The linkage mechanism drives the cutting mechanism to rise and slide after intermittently conveying the material strip, and simultaneously drives the lifting frame 14 to descend to press the edge of the material strip on the support plate 9 through the pressing assembly. The linkage mechanism includes a reciprocating drive assembly provided on the output shaft of the drive motor 28 and connected to the sliding seat 22. The reciprocating drive assembly drives the sliding seat 22 to slide back and forth. The reciprocating drive assembly includes a first drive frame 27 slidably provided at the bottom of the frame 1. The sliding seat 22 is provided with a positioning rod 23, which slides through the end of the first drive frame 27. A first drive column 36 is eccentrically provided on the output shaft of the drive motor 28, and the first drive column 36 is slidably clamped within the first drive frame 27.

[0028] The output shaft of the drive motor 28 rotates, driving the first drive column 36 in circumferential motion, thereby controlling the reciprocating sliding of the first drive frame 27 on the frame 1. As the first drive frame 27 slides, it controls the reciprocating sliding of the sliding seat 22, thereby controlling the sliding and lifting of the cutting blade 25. Furthermore, because the positioning rod 23 can slide at the end of the first drive frame 27 to accommodate positional deviations of the sliding seat 22, the movement of the cutting blade 25 can still be controlled even when its position changes.

[0029] like Figure 4 、 7As shown in Figures 8 and 9, in this embodiment, the linkage mechanism further includes a control assembly disposed on the output shaft of the drive motor 28 and connected to the mounting frame 19. The control assembly drives the mounting frame 19 to descend after the arc-shaped rack 31 disengages the spur gear 38. The control assembly includes a drive wheel 32 rotatably disposed on the mounting frame 5. A spiral groove 35 is defined around the circumference of the drive wheel 32. Eccentrically disposed second drive posts 37 are disposed at both ends of the drive wheel 32. A limit wheel 33 is disposed at the end of the drive wheel 32. The limit wheel 33 has two sets of positioning grooves 34 spaced apart from each other. The spiral grooves 35 are deeper than the positioning grooves 34. A second drive frame 21 is disposed on the mounting frame 19. A third elastic member is disposed between the second drive frame 21 and the mounting frame 5. The second drive post 37 is slidably engaged within the second drive frame 21. An arc-shaped frame 29 is disposed on the output shaft of the drive motor 28. The arc-shaped frame 29 can be engaged within the positioning groove 34. A drive rod 30 is disposed between the two ends of the arc-shaped frame 29. The drive rod 30 can be engaged within the spiral groove 35.

[0030] The output shaft of the drive motor 28 controls the curved frame 29 as it rotates. This first drives the drive rod 30 through one set of positioning slots 34 and then slides into the spiral groove 35, causing the drive wheel 32 to rotate a certain angle. The curved frame 29 then snaps into the other set of positioning slots 34, locking the drive wheel 32 in place and preventing it from rotating. During rotation, the drive wheel 32, through the cooperation of the eccentrically positioned second drive post 37 and the second drive frame 21, drives the mounting frame 19 downward, causing the pressure plate 16 to move downward and press the edges of the prepreg. When the curved frame 29 continues rotating until it clears the positioning slots 34, the third elastic member controls the second drive frame 21 to rise, causing the pressure plate 16 to rise and return to its original position. This coordinated structure allows the web conveying, cutting, and pressing to alternate, thereby achieving stable web cutting.

[0031] Specific usage and beneficial effects of the present invention: When the device is in use, the rolled semi-cured sheet material is installed on the frame 1, and the material strip is intermittently conveyed by the conveying mechanism. The edge of the material strip can be pressed by controlling the lifting frame 14 to descend, and the cutting mechanism can be controlled to slide and lift horizontally so that the cutting mechanism extends out of the cutting groove 10 after rising to cut the material strip. Under the action of the linkage mechanism, the cutting mechanism will only extend out of the cutting groove 10 for cutting when rising and sliding. At the same time, the lifting frame 14 can be automatically controlled to descend during the cutting process to cooperate with the supporting plate 9 to press the edge of the material strip, thereby ensuring that the material strip is firmly fixed during the cutting process and will not affect the conveying of the material strip. Compared with the traditional form of direct cutting during the conveying process, the material strip of this device is not prone to shaking and displacement when cutting the semi-cured sheet, so as to improve the effect of cutting the semi-cured sheet edge material and reduce the defective product rate. The translation seat 8 can also be slid and fixed on the support seat 6. During the movement, the translation seat 8 drives the support plate 9 and the cutting mechanism at the bottom thereof to move synchronously to adapt to the cutting of material strips of different widths, thereby improving the scope of application of the device.

[0032] The basic principles, main features, and advantages of the present invention are shown and described above. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above. Modifications and improvements may be made based on the present invention, as will be apparent to those skilled in the art. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to fall within the scope of protection claimed in the present invention.

Claims

1. A prepreg edge cutting device, characterized in that: Includes: The frame (1) is provided with support seats (6) on both sides, and a mounting frame (5) is provided at the bottom. The frame (1) is also provided with a conveying mechanism for intermittently conveying a material belt, and a slide groove (7) is provided on the frame (1); The translation seat (8) is provided with two groups and can be relatively slidably arranged on the two groups of support seats (6). The translation seat (8) is provided with a supporting plate (9) and a lifting frame (14) that can be lifted and lowered. The lifting frame (14) is provided with a pressing component. The supporting plate (9) is provided with a cutting groove (10). The supporting plate (9) can be horizontally slidably arranged in the sliding groove (7) and is flush with the surface of the frame (1); A cutting mechanism is arranged at the bottom of the support plate (9) so as to be slidable and liftable, and the cutting end of the cutting mechanism can extend out of the cutting groove (10) after the cutting mechanism is raised; and A linkage mechanism is provided on the mounting frame (5) and is connected to the conveying mechanism, the lifting frame (14) and the cutting mechanism to drive the cutting mechanism to rise and slide after the material strip is intermittently conveyed, and at the same time drive the lifting frame (14) to descend to press the edge of the material strip on the supporting plate (9) through the pressing assembly.

2. The prepreg edge cutting device according to claim 1, characterized in that: The pressing assembly includes: A mounting column (15) is escalably mounted on the lifting frame (14); A pressure plate (16) is provided at the end of the mounting column (15), and a first elastic member is provided between the pressure plate and the lifting frame (14); and A protective pad (17) is arranged at the bottom of the pressing plate (16).

3. The prepreg edge cutting device according to claim 2, characterized in that: The frame (1) is provided with a liftable mounting frame (19), the lifting frame (14) is provided with a slider (18), the slider (18) is slidably mounted in the mounting frame (19), and the mounting frame (19) is further provided with a rotatable threaded rod (20), the threaded rod (20) being screwed to the slider (18).

4. The prepreg edge cutting device according to claim 3, characterized in that: The cutting mechanism comprises: A sliding seat (22) is arranged on the bottom of the supporting plate (9) so as to be slidable laterally; A mounting seat (24) is movably mounted on the sliding seat (22), and a cutting knife (25) driven to rotate by a high-speed motor is mounted on the mounting seat (24). The cutting knife (25) is located in the cutting groove (10) and is staggered with the pressing plate (16); and A driving assembly is provided at the bottom of the supporting plate (9) and connected to the mounting seat (24) to drive the cutting knife (25) to rise and protrude from the cutting groove (10) when the sliding seat (22) approaches the material roll, and to drive the cutting knife (25) to descend and retract when the sliding seat (22) moves away from the material roll.

5. The prepreg edge cutting device according to claim 4, characterized in that: The drive assembly includes: A vertical plate (11) is arranged at the bottom of the supporting plate (9) and is provided with two groups of parallel flat grooves (12) and two groups of parallel inclined grooves (13), wherein the two groups of flat grooves (12) and the two groups of inclined grooves (13) form a parallelogram, and the ends of the flat grooves (12) are connected to one group of inclined grooves (13) in a stepped manner; and A guide column (26) is slidably arranged on the mounting seat (24) along its axis and is clamped in the flat groove (12). The guide column (26) is connected to the mounting seat (24) via a second elastic member.

6. The prepreg edge cutting device according to claim 4, characterized in that: The conveying mechanism includes: A tensioning roller (2) rotatably arranged at one end of the frame (1); Conveyor rollers (3) are arranged in two groups at intervals and are both rotatably arranged on the frame (1); a gap for the feed belt to pass through exists between the two groups of conveyor rollers (3), and the two groups of conveyor rollers (3) are connected via a flat gear pair (4); A drive motor (28) is fixedly mounted on the mounting frame (5); and A transmission assembly is provided on the output shaft of the driving motor (28) and is connected to one group of the conveying rollers (3) to drive the group of the conveying rollers (3) to rotate intermittently.

7. The prepreg edge cutting device according to claim 6, characterized in that: The transmission assembly includes: a spur gear (38) rotatably disposed on the mounting frame (5); an arc-shaped rack (31) disposed on the output shaft of the drive motor (28) and capable of intermittently meshing with the spur gear (38); A drive shaft (40) is rotatably disposed on the frame (1) and is connected to one set of the conveying rollers (3) via a belt drive mechanism; and A bevel gear pair (39) is connected to the spur gear (38) and the drive shaft (40).

8. The prepreg edge cutting device according to claim 7, characterized in that: The linkage mechanism includes: A reciprocating drive assembly is provided on the output shaft of the drive motor (28) and is connected to the sliding seat (22) to drive the sliding seat (22) to slide back and forth; and A control assembly is provided on the output shaft of the drive motor (28) and is connected to the mounting frame (19) to drive the mounting frame (19) to descend after the arc-shaped rack (31) is disengaged from the spur gear (38).

9. The prepreg edge cutting device according to claim 8, characterized in that: The reciprocating drive assembly includes: A first driving frame (27) is slidably arranged at the bottom of the frame (1), and a positioning rod (23) is provided on the sliding seat (22), and the positioning rod (23) is slidably passed through the end of the first driving frame (27); and The first driving column (36) is eccentrically arranged on the output shaft of the driving motor (28) and is slidably mounted in the first driving frame (27).

10. The prepreg edge cutting device according to claim 8, characterized in that: The control component includes: A driving wheel (32) is rotatably mounted on the mounting frame (5) and has a spiral groove (35) formed on its circumference. Both ends of the driving wheel (32) are provided with eccentrically arranged second driving posts (37). A limiting wheel (33) is provided at the end of the driving wheel (32), and two groups of positioning grooves (34) are provided on the limiting wheel (33) at intervals, and the depth of the spiral groove (35) is greater than that of the positioning groove (34); A second drive frame (21) is provided on the mounting frame (19), and a third elastic member is provided between the second drive frame (21) and the mounting frame (5), and the second drive column (37) is slidably mounted in the second drive frame (21); and An arc frame (29) is provided on the output shaft of the drive motor (28) and can be clamped in the positioning groove (34). A drive rod (30) is provided between the two ends of the arc frame (29), and the drive rod (30) can be clamped in the spiral groove (35).

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