Adjustable pay-off rack for prepreg production and use method of adjustable pay-off rack

Abstract

The invention discloses an adjustable pay-off rack for prepreg production, and relates to the technical field of prepreg production, the adjustable pay-off rack comprises a support plate and a fiber yarn bobbin, a clamping assembly is arranged on the support plate, the clamping assembly comprises a clamping plate which is arranged between a second sliding groove plate and a first sliding groove plate in a sliding mode and moves at equal intervals, and a tension adjusting assembly is arranged on the support plate; the tension adjusting assembly comprises a distance adjusting plate rotationally arranged on the support plate, an adjusting roller is arranged on the distance adjusting plate in a sliding mode, a fixed roller is fixedly connected to the distance adjusting plate, a guide assembly is arranged on the support plate, and the guide assembly comprises a straight groove rotating ring and an arc groove rotating ring which are installed on the two sides of the support plate respectively; according to the design, the clamping assembly, the tension adjusting assembly and the guide assembly are matched with one another, yarn bobbins of different tonnages and types can be clamped, meanwhile, the tensions of fiber bundles of different thicknesses can be adjusted, and therefore the yarn bobbins of different tonnages and types can be clamped conveniently and rapidly. The friction fuzzing phenomenon of fiber bundles is reduced, and the product quality stability is facilitated.

Description

Technical Field

[0001] This invention relates to the field of prepreg production technology, and in particular to an adjustable prepreg production wire feeding frame and its usage method. Background Technology

[0002] Prepreg production is an important process for preparing intermediate materials for composite materials. This process involves precisely impregnating a matrix resin (such as epoxy or phenolic resin) into reinforcing fibers (such as carbon fiber or glass fiber) to create a prepreg with a uniform fiber areal density. The quality of the prepreg directly affects the performance of the composite material.

[0003] During production, strict control of resin content and impregnation conditions is necessary to ensure full bonding between the fiber and resin. In terms of equipment, key devices such as adjustable pay-off frames are used to support and release the reinforcing fiber bundles, ensuring stable prepreg production. Prepregs are widely used in aerospace, automotive, and sporting goods industries, where their high strength and lightweight properties significantly enhance product performance.

[0004] A search revealed Chinese patent CN115385186A, which discloses a yarn feeding device and system for a prepreg production line. Compared with existing technologies, this invention patent CN115385186A involves rotating and mounting yarn bobbins wound with yarn onto yarn bobbin frames. The yarn is then drawn out from the yarn bobbins and guided by a guide part to one side of the ceramic eye plate. Since the guide part is adapted to the ceramic eye holes, multiple yarns pass through different ceramic eye holes and are parallel to each other. Because the multiple ceramic eye holes are staggered on the ceramic eye plate, the multiple yarns are also staggered. Therefore, even if the yarns move back and forth during unwinding, they will not come into contact, effectively avoiding friction between the yarns and reducing the occurrence of fuzzing.

[0005] Different types of prepreg production often face diverse needs in actual operation. They may require yarn bobbins of different tonnages and thicknesses to meet specific product specifications or performance requirements. At the same time, different processing technologies also have extremely strict requirements on yarn tension. However, the above-mentioned device structure or function may only be applicable to yarn bobbins of specific tonnages and types. In addition, it will be difficult for operators to fine-tune the yarn tension according to actual needs, which may lead to problems such as yarn breakage and uneven tension during unwinding, ultimately causing adverse effects on the product quality of prepreg. Therefore, in order to solve the above problems, an adjustable pay-off frame for prepreg production and its usage method are proposed. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies, such as low applicability, difficulty in adjusting the tension of fiber bundles according to different production processes, and difficulty in clamping fiber tubes of different tonnages and sizes. Therefore, this invention proposes an adjustable feeder for prepreg production.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable prepreg production feeder includes a support plate and a fiber yarn bobbin. A support rod is fixedly connected to the outside of the support plate. A clamping assembly is provided on the support plate. The clamping assembly includes a first sliding plate and a second sliding plate installed on the outside of the support plate. An equidistant clamping plate is slidably arranged between the second sliding plate and the first sliding plate. A plurality of first guide wheels are installed on the clamping plate. The plurality of equidistant clamping plates are used to clamp fiber yarn bobbins of different tonnages and types. The plurality of first guide wheels are used to assist the rotation of the fiber yarn bobbin during feed. The support plate is provided with a tension adjustment component, which includes an adjustment plate rotatably mounted on the support plate, an adjustment roller slidably mounted on the adjustment plate, and an adjustment roller connected to a fixed roller on the adjustment plate. The rotatably mounted adjustment plate provides the necessary degrees of freedom of movement for tension adjustment, and the slidably mounted adjustment roller and the fixedly mounted fixed roller are used to fine-tune the tension of the fiber bundle. The support plate is provided with a guide assembly, which includes a straight groove rotating ring and an arc groove rotating ring respectively installed on both sides of the support plate. Multiple fixed guide plates that move at equal intervals are slidably arranged in a common circumferential array between the straight groove rotating ring and the arc groove rotating ring. A second guide wheel is rotatably arranged on the fixed guide plate. The multiple second guide wheels can guide fiber bundles of different thicknesses by moving closer or further apart from each other.

[0008] The above technical solution further includes: The clamping assembly further includes a clamping screw rotatably connected to the inner side of the support plate, a mounting bracket fixedly connected to the side of the support plate near the second slide plate, the mounting bracket being fixedly connected to the second slide plate, and both the first slide plate and the second slide plate being rotatably connected to the clamping screw.

[0009] The clamping screw is threaded with a large adjusting ring and a small adjusting ring. The large adjusting ring and the small adjusting ring are engaged with and slide against multiple clamping plates. Multiple first guide wheels are in contact with the fiber yarn bobbin. A small gear is installed at the end of the clamping screw that extends to the outside of the support plate and is away from the small adjusting ring.

[0010] The tension adjustment assembly also includes a drive shaft rotatably connected to the bracket plate, a large gear mounted on the outside of the drive shaft, the large gear meshing with the small gear, and the drive shaft being fixedly connected to the adjustment plate.

[0011] An adjusting threaded block is slidably provided on the inner side of the adjusting plate. The adjusting threaded block is fixedly connected to the fixed roller. An adjusting bolt is threadedly connected to the inner side of the adjusting plate. The adjusting bolt is rotatably connected to the adjusting threaded block.

[0012] A guide cylinder is fixedly connected to the inner side of the support plate. The straight groove rotating ring and the arc groove rotating ring are respectively installed on both sides of the guide cylinder. A sliding guide rod is slidably arranged between the straight groove rotating ring and the arc groove rotating ring. The fixed guide plate is fixedly connected to the sliding guide rod.

[0013] A motor is installed on the side of the support plate near the arc groove rotating ring. A drive gear is fixedly connected to the output end of the motor. A driven gear is fixedly connected to the outer side of the arc groove rotating ring. The drive gear and the driven gear mesh with each other.

[0014] The sides of the clamping plates that are close to each other are designed with an inclined surface, while the sides of the clamping plates that are far apart from each other are designed with a horizontal surface. Both the first slide plate and the second slide plate are provided with grooves for the clamping plates to slide. The groove on the first slide plate is higher than the groove on the second slide plate.

[0015] Both the arc groove rotating ring and the straight groove rotating ring are provided with grooves that move synchronously with the drive fixed guide plate. The grooves on the straight groove rotating ring are straight grooves, and the grooves on the arc groove rotating ring are arc grooves.

[0016] A method for using an adjustable wire feeder in prepreg production includes the following steps: S1: First, the worker places the fiber bundle tube on the clamp, passes the fiber bundle on the fiber yarn tube through the adjusting roller and the fixed roller in an S-shape, and finally guides it into the guide tube above the support rod. The motor is started, and the motor drives the active gear to rotate, which in turn drives the driven gear to rotate. The arc groove on the driven gear squeezes the sliding guide rod and is guided by the straight groove on the straight groove ring to make the fixed guide plates move closer or further apart. The movement of the fixed guide plate drives the second guide wheel to move synchronously, so as to guide different fiber bundles. S2: Subsequently, the clamping screw is rotated to drive the large and small adjusting rings to move synchronously. The large and small adjusting rings move synchronously to squeeze the multiple clamping plates set around the circumference to slide in the grooves on the first and second slide plates, so as to open or tighten the multiple clamping plates and achieve clamping of fiber yarn bobbins of different tonnages and types. S3: Secondly, when the fiber yarn bobbin is installed, the rotating clamping screw drives the small gear to rotate, which in turn drives the large gear to rotate synchronously. The rotation of the large gear drives the adjusting plate to rotate at the axis of the transmission shaft. The rotation of the adjusting plate drives the adjusting roller and the fixed roller to rotate synchronously, thereby tightening the fiber bundle. At the same time, the rotating adjusting bolt drives the adjusting threaded block to move the fixed roller, thereby fine-tuning the tension of the fiber bundle.

[0017] The present invention has the following beneficial effects: In this invention, the clamping assembly, through the design of equidistantly movable clamping plates, can flexibly clamp fiber yarn bobbins of different tonnages and types, with strong adaptability. Furthermore, the first guide wheel installed on the clamping plate assists in rotation during yarn feeding, reducing friction and improving smoothness.

[0018] In this invention, the tension adjustment component provides the necessary degrees of freedom of movement through a rotating adjustment plate. In conjunction with a sliding adjustment roller and a fixed roller, it can precisely fine-tune the tension of the fiber bundle, reduce the risk of thread breakage, and ensure stable product quality.

[0019] In this invention, the guiding component utilizes a fixed guide plate that slides in a circumferential array between a straight groove swivel ring and an arc groove swivel ring, as well as a second guide wheel that rotates on the fixed guide plate, to effectively guide fiber bundles of different thicknesses, maintain a stable feeding path, and prevent the fiber bundles from becoming fuzzy due to friction, which would affect the quality of the bundles and further improve the versatility and flexibility of the feeding frame. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall front view of an adjustable wire feeding frame for prepreg production proposed in this invention. Figure 2 This is a schematic diagram of the overall left-side view structure in this invention; Figure 3 This is a schematic diagram of the overall right-side view structure in this invention; Figure 4 This is a partial structural illustration of the present invention; Figure 5 This is a schematic diagram of the clamping component structure in the present invention; Figure 6 This is a schematic diagram of the guiding component structure in the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the guide component in this invention; Figure 8 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 9 for Figure 5 Enlarged schematic diagram of the structure at point B.

[0021] In the diagram: 1. Support plate; 2. Fiber yarn bobbin; 3. Guide cylinder; 4. Adjusting plate; 5. Support rod; 20. Clamping screw; 21. Mounting frame; 22. Pinion gear; 24. First slide rail plate; 25. Second slide rail plate; 26. Clamping plate; 27. Large adjusting ring; 28. Small adjusting ring; 29. ​​First guide wheel; 30. Motor; 31. Drive gear; 32. Driven gear; 33. Arc groove rotating ring; 34. Straight groove rotating ring; 35. Sliding guide rod; 36. Fixed guide plate; 37. Second guide wheel; 40. Drive shaft; 41. Large gear; 42. Fixed roller; 43. Adjusting fixed roller; 44. Adjusting bolt; 45. Adjusting threaded block. Detailed Implementation

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1 like Figures 1-9 As shown, the present invention proposes an adjustable prepreg production wire feeding frame, including a support plate 1 and a fiber yarn spool 2. A support rod 5 is fixedly connected to the outside of the support plate 1. A clamping assembly is provided on the support plate 1. The clamping assembly includes a first sliding groove plate 24 and a second sliding groove plate 25 installed on the outside of the support plate 1. An equidistant clamping plate 26 is slidably arranged between the second sliding groove plate 25 and the first sliding groove plate 24. A plurality of first guide wheels 29 are installed on the clamping plate 26. The plurality of equidistant clamping plates 26 are used to clamp fiber yarn spools 2 of different tonnages and types. The plurality of first guide wheels 29 are used to assist the rotation of the fiber yarn spool 2 during wire feeding. Furthermore, the pay-off frame mainly consists of a support plate 1, a fiber yarn spool 2, and clamping components, tension adjusting components, and guiding components mounted on the support plate 1. These components work together to ensure the stability and flexibility of the fiber yarn spool 2 during the pay-off process. In the clamping components, a first sliding groove plate 24 and a second sliding groove plate 25 mounted on the outer side of the support plate 1 provide sliding tracks for the clamping plates 26. By sliding the clamping plates 26, the spacing between the clamping plates 26 can be adjusted according to the specifications of the fiber yarn spool 2, thereby achieving clamping of fiber yarn spools 2 of different tonnages and types. Multiple first guide wheels 29 mounted on the clamping plates 26 assist in the rotation of the fiber yarn spool 2 during pay-off, reducing friction between the fiber yarn and the clamping plates 26, making the pay-off process smoother.

[0024] The support plate 1 is provided with a tension adjustment component, which includes an adjustment plate 4 rotatably mounted on the support plate 1, an adjustment roller 43 slidably mounted on the adjustment plate 4, and a fixed roller 42 fixedly connected to the adjustment plate 4. The rotatably mounted adjustment plate 4 provides the necessary degrees of freedom of movement for tension adjustment, and the slidably mounted adjustment roller 43 and the fixedly mounted fixed roller 42 are used to finely adjust the tension of the fiber bundle. Furthermore, the tension adjustment assembly provides the necessary degrees of freedom for tension adjustment through the adjustable plate 4 rotatably mounted on the support plate 1. The adjustable plate 4 can rotate around its rotation center, thereby changing the relative position between the adjusting roller 43 and the fixed roller 42. The adjusting roller 43, which is slidably mounted on the adjustable plate 4, can be positioned on the adjustable plate 4 and cooperates with the fixed roller 42. By fine-tuning the distance between the two, the tension of the fiber bundle can be controlled, ensuring that the fiber bundle maintains stable tension during the unwinding process and reducing problems such as thread breakage caused by tension fluctuations.

[0025] A guide assembly is provided on the support plate 1. The guide assembly includes a straight groove rotating ring 34 and an arc groove rotating ring 33 respectively installed on both sides of the support plate 1. Multiple fixed guide plates 36 that move at equal intervals are slidably arranged in a common circumferential array between the straight groove rotating ring 34 and the arc groove rotating ring 33. A second guide wheel 37 is rotatably arranged on the fixed guide plate 36. The multiple second guide wheels 37 can guide fiber bundles of different thicknesses by moving closer or further away from each other. Furthermore, multiple equidistant fixed guide plates 36 are slidably arranged in a common circumferential array between the straight groove swivel ring 34 and the arc groove swivel ring 33. These fixed guide plates 36 can slide circumferentially under the guidance of the straight groove swivel ring 34 and the arc groove swivel ring 33, thereby adjusting the spacing between the multiple second guide wheels 37. The second guide wheels 37 rotatably mounted on the fixed guide plates 36 can guide fiber bundles of different thicknesses. When the fiber bundle is thicker, the fixed guide plates 36 are slid outward to make the second guide wheels 37 move away from each other; when the fiber bundle is thinner, the fixed guide plates 36 are slid inward to make the second guide wheels 37 move closer to each other, ensuring that the fiber bundle maintains a stable path during the unwinding process, avoiding tangling or knotting, and preventing the fiber bundle from becoming fuzzy due to friction, thus improving the stability of unwinding.

[0026] The clamping assembly also includes a clamping screw 20 rotatably connected to the inner side of the support plate 1, a mounting bracket 21 fixedly connected to the side of the support plate 1 near the second slide plate 25, the mounting bracket 21 being fixedly connected to the second slide plate 25, the first slide plate 24 and the second slide plate 25 being rotatably connected to the clamping screw 20, the side of the clamping plates 26 that are close to each other being designed with an inclined surface, and the side of the clamping plates 26 that are far from each other being designed with a horizontal surface, and the first slide plate 24 and the second slide plate 25 are both provided with grooves for the clamping plates 26 to slide, the groove on the first slide plate 24 being higher than the groove on the second slide plate 25; The clamping screw 20 is threaded with a large adjusting ring 27 and a small adjusting ring 28. The large adjusting ring 27 and the small adjusting ring 28 are engaged with and slide against each other with multiple clamping plates 26. Multiple first guide wheels 29 are in contact with each other with the fiber yarn bobbin 2. A small gear 22 is installed at the end of the clamping screw 20 that extends to the outside of the support plate 1 and is away from the small adjusting ring 28. Furthermore, firstly, the fiber yarn bobbin 2 is placed on the outside of the clamping plate 26. Then, when the clamping screw 20 is rotated, the first sliding plate 24 and the second sliding plate 25 can provide relatively stable support relative to the clamping screw 20. Both the first sliding plate 24 and the second sliding plate 25 are provided with grooves for the sliding of the clamping plate 26. The groove on the first sliding plate 24 is higher than the groove on the second sliding plate 25, providing a track for the sliding of the clamping plate 26.

[0027] Furthermore, a large adjusting ring 27 and a small adjusting ring 28 are threadedly connected to the clamping screw 20. The large adjusting ring 27 and the small adjusting ring 28 can move along the axial direction of the clamping screw 20 when it rotates. The sides of the multiple clamping plates 26 that are close to each other are designed with an inclined surface, while the sides that are far apart from each other are designed with a horizontal surface. The large adjusting ring 27 and the small adjusting ring 28 engage with and slide against the multiple clamping plates 26. When the pinion 22 rotates, causing the clamping screw 20 to rotate, the large adjusting ring 27 and the small adjusting ring 28 will move along the clamping screw 20. Because they engage with and slide against the clamping plates 26, they will push the clamping plates 26 to slide within the grooves of the first slide plate 24 and the second slide plate 25.

[0028] Furthermore, the groove on the first slide plate 24 is higher than the groove on the second slide plate 25, and the clamping plates 26 are designed with an inclined surface on the side closest to each other. Therefore, when the large adjusting ring 27 and the small adjusting ring 28 move, they will cause the clamping plates 26 to move closer or further apart. When multiple clamping plates 26 are close to each other, they can clamp fiber yarn bobbins 2 of different tonnages and types. Multiple first guide wheels 29 are installed on the clamping plates 26 and are in contact with the fiber yarn bobbins 2. When the fiber yarn bobbins 2 are unloaded, the first guide wheels 29 play an auxiliary rotation role, reducing the friction between the fiber yarn and the clamping plates 26, making the unloading process smoother, thereby achieving stable clamping and auxiliary unloading functions for fiber yarn bobbins 2 of different specifications.

[0029] The tension adjustment assembly also includes a drive shaft 40 rotatably connected to the support plate 1, a large gear 41 mounted on the outside of the drive shaft 40, the large gear 41 meshing with the small gear 22, and the drive shaft 40 being fixedly connected to the adjusting plate 4. An adjusting threaded block 45 is slidably provided on the inner side of the adjusting plate 4. The adjusting threaded block 45 is fixedly connected to the adjusting roller 43. An adjusting bolt 44 is threadedly connected to the inner side of the adjusting plate 4. The adjusting bolt 44 is rotatably connected to the adjusting threaded block 45. Furthermore, when the clamping screw 20 is rotated to drive the pinion 22 to rotate, due to the meshing relationship between the large gear 41 and the pinion 22, the transmission shaft 40 will be driven to rotate at the same time. Since the transmission shaft 40 is fixedly connected to the adjusting plate 4, the adjusting plate 4 will rotate together with the transmission shaft 40, providing the necessary degrees of freedom of movement for tension adjustment.

[0030] Furthermore, an adjusting threaded block 45 is slidably disposed on the inner side of the adjusting plate 4. The adjusting threaded block 45 is fixedly connected to the adjusting roller 43. An adjusting bolt 44 is threadedly connected to the inner side of the adjusting plate 4. The adjusting bolt 44 is rotatably connected to the adjusting threaded block 45. When it is necessary to adjust the position of the adjusting roller 43, the adjusting bolt 44 is rotated. Since the adjusting bolt 44 is threadedly connected to the inner side of the adjusting plate 4 and rotatably connected to the adjusting threaded block 45, the adjusting threaded block 45 will slide along the axial direction of the adjusting bolt 44 on the inner side of the adjusting plate 4, thereby driving the adjusting roller 43 to slide.

[0031] Furthermore, the adjusting roller 43 and the fixed roller 42 work together to fine-tune the tension of the fiber bundle. When the adjusting roller 43 slides and changes position, the distance between the adjusting roller 43 and the fixed roller 42 changes, thereby altering the path length of the fiber bundle between them, thus achieving fine-tuning of the fiber bundle tension. For example, when it is necessary to increase the fiber bundle tension, rotating the adjusting bolt 44 causes the adjusting roller 43 to slide closer to the fixed roller 42, reducing the distance between them; when it is necessary to decrease the tension, rotating the adjusting bolt 44 causes the adjusting roller 43 to slide away from the fixed roller 42, increasing the distance between them. In this way, the tension of the fiber bundle during the unwinding process can be precisely controlled, ensuring the stability of unwinding and product quality.

[0032] A guide cylinder 3 is fixedly connected to the inner side of the support plate 1. A straight groove rotating ring 34 and an arc groove rotating ring 33 are respectively installed on both sides of the guide cylinder 3. A sliding guide rod 35 is slidably arranged between the straight groove rotating ring 34 and the arc groove rotating ring 33. The fixed guide plate 36 is fixedly connected to the sliding guide rod 35. A motor 30 is installed on the side of the support plate 1 near the arc groove rotating ring 33. The output end of the motor 30 is fixedly connected to the drive gear 31, and the outer side of the arc groove rotating ring 33 is fixedly connected to the driven gear 32. The drive gear 31 and the driven gear 32 mesh with each other. Both the arc groove rotating ring 33 and the straight groove rotating ring 34 are provided with grooves that move synchronously with the drive fixed guide plate 36. The grooves on the straight groove rotating ring 34 are straight grooves, and the grooves on the arc groove rotating ring 33 are arc grooves. Furthermore, a motor 30 is mounted on the side of the support plate 1 near the arc groove rotating ring 33. A drive gear 31 is fixedly connected to the output end of the motor 30, and a driven gear 32 is fixedly connected to the outer side of the arc groove rotating ring 33. The drive gear 31 and the driven gear 32 mesh with each other. When the motor 30 starts, it drives the drive gear 31 to rotate. Since the drive gear 31 and the driven gear 32 mesh with each other, the driven gear 32 will rotate accordingly, thereby driving the arc groove rotating ring 33 to rotate.

[0033] Furthermore, both the arc-groove rotating ring 33 and the straight-groove rotating ring 34 are provided with grooves that move synchronously with the drive fixed guide plate 36. The grooves on the straight-groove rotating ring 34 are straight grooves, while the grooves on the arc-groove rotating ring 33 are arc-shaped grooves. During the rotation of the arc-groove rotating ring 33, since the sliding guide rod 35 slides between the straight-groove rotating ring 34 and the arc-groove rotating ring 33, and the fixed guide plate 36 is fixedly connected to the sliding guide rod 35, while the sliding guide rod 35 is constrained by the grooves on the straight-groove rotating ring 34 and the arc-groove rotating ring 33, the fixed guide plate 36 will slide in the straight groove direction as the arc-groove rotating ring 33 rotates.

[0034] Furthermore, multiple fixed guide plates 36 are arranged in a circumferential array and slide, with second guide wheels 37 rotatably mounted on each fixed guide plate 36. When the fixed guide plates 36 slide, they drive the second guide wheels 37 to move synchronously. The multiple second guide wheels 37 move closer or further apart, thereby guiding fiber bundles of different thicknesses. When guiding thicker fiber bundles, the motor 30 drives the arc groove rotating ring 33 to rotate, causing the fixed guide plates 36 to move the second guide wheels 37 further apart; when guiding thinner fiber bundles, the motor 30 drives the arc groove rotating ring 33 to rotate in the opposite direction, causing the fixed guide plates 36 to move the second guide wheels 37 closer together. In this way, it is ensured that the fiber bundles maintain a stable path during the unwinding process, avoiding tangling or knotting, while reducing friction and fuzzing of the fiber bundles, better meeting the working requirements of adjustable unwinding frames in prepreg production.

[0035] In this embodiment, during use, the fiber yarn spool 2 is first placed on the outside of the clamping plate 26. Then, the fiber bundle on the fiber yarn spool 2 is passed through the guide tube 3. The motor 30 is started, which drives the driving gear 31 to rotate, causing the driven gear 32 to rotate as well. This, in turn, drives the arc groove rotating ring 33 to rotate. The sliding guide rod 35 is constrained by the grooves on the straight groove rotating ring 34 and the arc groove rotating ring 33. The fixed guide plate 36 slides in the straight groove direction as the arc groove rotating ring 33 rotates. When the fixed guide plate 36 slides, it causes the second guide wheel 37 to move closer or further away from each other, thereby guiding and clamping fiber bundles of different thicknesses. After the fiber bundle is fixed at the end, the fiber bundle is in a relaxed state. Then, the clamping screw 20 is rotated, causing the clamping plate 26 to tighten the fiber yarn bobbin 2. The first guide wheel 29 plays an auxiliary role in rotation, reducing the friction between the fiber yarn and the clamping plate 26. At the same time, the rotation of the clamping screw 20 drives the large gear 41 to rotate, and the large gear 41 drives the adjusting plate 4 to rotate together with the transmission shaft 40, providing the necessary degrees of freedom of movement for tension adjustment. Meanwhile, the fixed roller 43 and the adjusting roller 42 are used to fine-tune the tension of the fiber bundle. When the adjusting roller 43 slides and changes position, the distance between the fixed roller 43 and the adjusting roller 42 will change, thereby changing the length of the fiber bundle's winding path between the two, thus achieving fine-tuning of the fiber bundle's tension.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable pay-off frame for prepreg production, comprising a support plate (1) and a fiber yarn spool (2), characterized in that, A support rod (5) is fixedly connected to the outside of the support plate (1). A clamping assembly is provided on the support plate (1). The clamping assembly includes a first sliding plate (24) and a second sliding plate (25) installed on the outside of the support plate (1). An equidistant clamping plate (26) is slidably arranged between the second sliding plate (25) and the first sliding plate (24). A plurality of first guide wheels (29) are installed on the clamping plate (26). The plurality of equidistant clamping plates (26) are used to clamp fiber yarn bobbins (2) of different tonnages and types. The plurality of first guide wheels (29) are used to assist the fiber yarn bobbins (2) in rotating when unwinding. The support plate (1) is provided with a tension adjustment component, which includes an adjustment plate (4) rotatably disposed on the support plate (1), an adjustment roller (43) slidably disposed on the adjustment plate (4), and a fixed roller (42) fixedly connected to the adjustment plate (4). The rotatably disposed adjustment plate (4) provides the necessary degrees of freedom of movement for tension adjustment, and the slidably disposed adjustment roller (43) and the fixedly disposed fixed roller (42) are used to finely adjust the tension of the fiber bundle. The support plate (1) is provided with a guide assembly, which includes a straight groove rotating ring (34) and an arc groove rotating ring (33) respectively installed on both sides of the support plate (1). A plurality of fixed guide plates (36) that move at equal intervals are slidably arranged in a common circumferential array between the straight groove rotating ring (34) and the arc groove rotating ring (33). A second guide wheel (37) is rotatably arranged on the fixed guide plate (36). The plurality of second guide wheels (37) can guide fiber bundles of different thicknesses by moving closer or further away from each other.

2. The adjustable wire feeding frame for prepreg production according to claim 1, characterized in that, The clamping assembly also includes a clamping screw (20) rotatably connected to the inner side of the support plate (1), and a mounting bracket (21) fixedly connected to the side of the support plate (1) near the second slide plate (25). The mounting bracket (21) is fixedly connected to the second slide plate (25), and the first slide plate (24) and the second slide plate (25) are both rotatably connected to the clamping screw (20).

3. The adjustable wire feeding frame for prepreg production according to claim 2, characterized in that, The clamping screw (20) is threaded with a large adjusting ring (27) and a small adjusting ring (28). The large adjusting ring (27) and the small adjusting ring (28) are engaged with and slide against multiple clamping plates (26). Multiple first guide wheels (29) are in contact with the fiber yarn bobbin (2). A small gear (22) is installed at the end of the clamping screw (20) that extends to the outside of the support plate (1) and is away from the small adjusting ring (28).

4. The adjustable wire feeding frame for prepreg production according to claim 2, characterized in that, The tension adjustment assembly also includes a drive shaft (40) rotatably connected to the bracket plate (1), a large gear (41) is installed on the outside of the drive shaft (40), the large gear (41) meshes with the small gear (22), and the drive shaft (40) is fixedly connected to the adjusting plate (4).

5. An adjustable wire feeding frame for prepreg production according to claim 4, characterized in that, The adjusting plate (4) is slidably provided with an adjusting threaded block (45) on its inner side. The adjusting threaded block (45) is fixedly connected to the adjusting roller (43). The adjusting plate (4) is internally threaded with an adjusting bolt (44). The adjusting bolt (44) is rotatably connected to the adjusting threaded block (45).

6. The adjustable wire feeding frame for prepreg production according to claim 1, characterized in that, The inner side of the support plate (1) is fixedly connected to the guide cylinder (3). The straight groove rotating ring (34) and the arc groove rotating ring (33) are respectively installed on both sides of the guide cylinder (3). The straight groove rotating ring (34) and the arc groove rotating ring (33) are slidably arranged together with the sliding guide rod (35). The fixed guide plate (36) is fixedly connected to the sliding guide rod (35).

7. An adjustable wire feeding frame for prepreg production according to claim 6, characterized in that, A motor (30) is installed on the side of the support plate (1) near the arc groove rotating ring (33). The output end of the motor (30) is fixedly connected to a drive gear (31). A driven gear (32) is fixedly connected to the outer side of the arc groove rotating ring (33). The drive gear (31) and the driven gear (32) mesh with each other.

8. The adjustable wire feeding frame for prepreg production according to claim 1, characterized in that, The side of the clamping plates (26) that are close to each other is designed with an inclined surface, and the side of the clamping plates (26) that are far apart from each other is designed with a horizontal surface. The first slide plate (24) and the second slide plate (25) are both provided with grooves for sliding of the clamping plates (26). The groove on the first slide plate (24) is higher than the groove on the second slide plate (25).

9. An adjustable wire feeding frame for prepreg production according to claim 1, characterized in that, Both the arc groove swivel (33) and the straight groove swivel (34) are provided with grooves that move synchronously with the drive fixed guide plate (36). The groove on the straight groove swivel (34) is a straight groove, and the groove on the arc groove swivel (33) is an arc groove.

10. A method of using an adjustable wire feeder for prepreg production, characterized in that, Includes the following steps: S1: First, the staff puts the fiber bundle tube on the clamp (26), and passes the fiber bundle on the fiber yarn tube (2) through the fixed roller (42) and the adjusting roller (43) in an S-shape. Finally, it is guided into the guide tube (3) above the support rod (5). The motor (30) is started. The motor (30) drives the active gear (31) to rotate and drive the driven gear (32) to rotate. The arc groove on the driven gear (32) squeezes the sliding guide rod (35) and under the guidance of the straight groove on the straight groove ring (34), the fixed guide plate (36) moves closer or further away from each other. The movement of the fixed guide plate (36) drives the second guide wheel (37) to move synchronously, so as to achieve the guiding effect on different fiber bundles. S2: Subsequently, the clamping screw (20) is rotated to drive the large adjusting ring (27) and the small adjusting ring (28) to move synchronously. The large adjusting ring (27) and the small adjusting ring (28) move synchronously to squeeze the multiple clamping plates (26) arranged in the circumference to slide in the grooves on the first slide plate (24) and the second slide plate (25), so as to open or tighten the multiple clamping plates (26) and to clamp fiber yarn bobbins (2) of different tonnages and types. S3: Next, when the fiber yarn bobbin (2) is installed, the rotating clamping screw (20) drives the small gear (22) to rotate and drive the large gear (41) to rotate synchronously. The rotation of the large gear (41) drives the adjusting plate (4) to rotate at the axis of the transmission shaft (40). The rotation of the adjusting plate (4) drives the fixed roller (42) and the adjusting roller (43) to rotate synchronously, thereby tightening the fiber bundle. At the same time, the rotating adjusting bolt (44) drives the adjusting thread block (45) to move the adjusting roller (43), thereby achieving fine adjustment of the tension of the fiber bundle.

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