An automatic adjustment operation system for a prepreg production line

Abstract

This invention discloses an automatic adjustment operating system for a prepreg production line, including a yarn feeding unit and a yarn arranging device. Fiber yarn fed from the yarn feeding unit enters the yarn arranging device for arranging, forming a yarn bundle with a certain width. The yarn bundle sequentially enters a spreading unit, a pressing unit, a cooling plate, traction rollers, and a coating pressure roller, arranged after the yarn arranging device. Above and below the spreading unit are a film unwinding unit and a resin film unwinding unit, respectively. Above the coating pressure rollers is a PE film unwinding unit, followed by a finished product winding unit. The film unwound from the film unwinding unit and the resin film unwound from the resin film unwinding unit, along with the yarn bundle, enter the pressing unit for bonding and pressing. After pressing, a prepreg yarn width is formed, which is then bonded to the PE film by the coating pressure rollers and wound up by the finished product winding unit. This invention can adjust the fiber surface density and uniform distribution of the yarn bundle in the prepreg yarn width and control the width of the yarn width.

Description

Technical Field

[0001] This invention relates to an automatic adjustment operating system for a prepreg production line. Background Technology

[0002] The preparation of fiber-reinforced resin-based prepreg requires that each fiber be evenly arranged and fixed through a yarn-laying device (reeder) to form a resin + fiber prepreg product with acceptable areal density and width. The processing involves multiple winding, unwinding, and pressing units. The pressing unit evenly squeezes the resin into the fibers, resulting in high fiber slippage. After multiple pressing units, the product width, fiber wettability, fiber areal density, and fiber distribution, which significantly affect quality, must be ensured.

[0003] Product width and fiber density can change during processing, requiring timely adjustments and corrections. Furthermore, the fiber density may be lighter within a 2%–5% width range around the edges of the prepreg, affecting product quality. Overall, prepregs must have uniform basis weight, meet weight standards, and have acceptable width. Failure to do so will result in substandard products and waste.

[0004] Currently, solving these problems relies entirely on the operator's experience and manual adjustments. 1) The width of the prepreg fabric is frequently measured manually, and the feeding width and quantity of carbon fibers are adjusted or reduced based on experience. 2) The issue of the fiber surface density becoming lighter on both sides of the prepreg fabric is addressed by adding yarn for a rough, even distribution, but precise adjustments are not possible. 3) There are many upper and lower adhesive films and winding / unwinding operations, requiring alignment of the upper and lower adhesive films and the fibers to be positioned in the middle of the film. Furthermore, the adhesive film is not always coated to the center of the release paper, making adjustments to the feeding position of all materials time-consuming and labor-intensive. Relying entirely on the operator's individual experience for adjustments leads to inconsistent operational approaches and makes the process difficult. Summary of the Invention

[0005] To address the above problems, the purpose of this invention is to provide an automatic adjustment operating system for a prepreg production line.

[0006] To achieve the above objectives, the solution of the present invention is as follows: An automatic adjustment operating system for a prepreg production line includes a yarn collecting plate and a yarn discharging device. Fiber yarns released from the yarn collecting plate enter the yarn discharging device for unloading. After being unloaded, the fiber yarns form a yarn stack with a certain width. The yarn stack then enters a yarn spreading unit, a pressing unit, a cooling plate, traction rollers, and a coating pressure roller arranged sequentially after the yarn discharging device. The yarn spreading unit consists of multiple yarn spreading rollers arranged sequentially, and the pressing unit has multiple sets of pressing rollers and a heating plate. Below the yarn spreading unit is a film unwinding unit, which contains a film unwinding roller. Above the yarn spreading unit is a resin film unwinding unit, which contains a resin adhesive layer and release paper. After the traction rollers are a release paper peeling roller and a release paper winding unit. Above the laminating pressure rollers is a PE film unwinding unit, and after the laminating pressure rollers is a finished product winding unit. The adhesive film unwinding unit releases the adhesive layer of the adhesive film through the adhesive film unwinding roller, and the resin film released by the resin film unwinding unit enters the pressing unit together with the yarn. The pressing unit has multiple sets of pressing rollers and heating plates. After the adhesive film and resin film are pressed together with the yarn, they form a glued yarn web. After being cooled by the cooling plate, the glued yarn web is pulled out by the traction rollers. The glued yarn web is first peeled off by the release paper peeling roller and the release paper winding unit, and then enters the coating pressure roller together with the PE film released from the PE film unwinding unit. After coming out of the coating pressure roller, the glued yarn web covered with PE film is wound up by the finished product winding unit. During system installation: the yarn collecting plate, yarn feeding device, yarn spreading unit's spreading roller, heating plate, cooling plate, and the air expansion shaft of the adhesive film unwinding unit, resin film unwinding unit, and finished product winding unit are each equipped with a center mark, and the sequential arrangement is based on the line connecting the center marks as the reference axis. During system operation: Align the center line of the yarn row and the center line of the dipped yarn width with the center mark; Correction devices are installed between the film unwinding roller and the pressing unit in the film unwinding unit, and between the resin film unwinding roller and the pressing unit in the resin film unwinding unit. The correction devices are used to correct the film released by the film unwinding roller, so that the adhesive layer of the film covers the yarn stack from the bottom surface, and to correct the resin film released by the resin film unwinding roller, so that the resin layer of the resin film covers the yarn stack from the top surface. A thickness detector and a width detector are installed between the traction roller and the coating roller. The thickness detector is used to detect the density uniformity of the dipped yarn width output from the traction roller, and the width detector is used to detect the width of the dipped yarn width. A controller receives the detection signals from the width detector and the thickness detector, and adjusts the yarn stack density and the yarn stack width based on the center line of the yarn stack according to the detection signal requirements.

[0007] The solution further includes: the air shafts of the yarn collecting plate, yarn feeding device, heating plate, cooling plate, and the adhesive film unwinding unit, resin film unwinding unit, and finished product winding unit have scales pasted outwards on both sides of the center mark line, with the edge of the finished dipped yarn width as the base point. The initial scale value of the scale is the nominal width value of the finished dipped yarn width, and then the scale is divided into millimeter intervals. The scales are marked sequentially by multiplying the millimeter interval by 2 and adding it to the width value of the finished dipped yarn width, so as to intuitively represent the width value of the yarn rows and dipped yarn widths that have passed through.

[0008] A further aspect of the solution is that the width detection device is a laser-touch width detection device, comprising a magnetic ruler base, on which a magnetic ruler strip is attached, and two relatively movable and adjustable magnetic induction blocks are arranged along the magnetic ruler base. A display reads the data of the magnetic ruler strip sensed by the magnetic induction blocks. A laser linear illumination lamp is arranged on each of the two magnetic induction blocks. During detection, the relative movement of the two magnetic induction blocks is adjusted. When the vertical or oblique laser linear illumination lamps on the two magnetic induction blocks touch the two sides of the dipped yarn width, the width value of the dipped yarn width is obtained from the data read from the two magnetic induction blocks.

[0009] The solution further includes: the width detection device is a non-contact photographic width detection device, comprising a linear light lamp positioned above and below the passing dipped yarn web, and a camera positioned above the dipped yarn web. During detection, the linear light lamp illuminates the dipped yarn web horizontally and perpendicularly to the reference axis, forming a bright line on the surface of the dipped yarn web. The camera captures the bright line, and then compares the length of the captured bright line with the standard bright line length to obtain the width value of the dipped yarn web. The standard bright line length is pre-acquired and stored based on the standard dipped yarn web width.

[0010] The solution further comprises: the yarn arrangement device is a yarn arrangement device that rotates to adjust the yarn density around the yarn centerline, including comb pins, a mounting plate, and a mounting base placed on a frame. The comb pins are spaced apart and fixed on the mounting plate. The mounting plate is rotatably fixed to the mounting base via a rotating shaft and a flange bearing seat. The rotating shaft is positioned at the center of the mounting plate's length, coinciding with the yarn centerline. A reducer driven by a motor is connected to the mounting base. The output shaft of the reducer is connected to the rotating shaft, driving the mounting plate to rotate. This rotation of the mounting plate, with the yarn centerline as the reference, results in the adjustment of the yarn width. Corner needle plates are mounted on both sides of the mounting plate via corner brackets. The corner needle plates are arranged with comb needles that connect to the mounting plate. Support seats are mounted on the mounting bases on both sides of the flange bearing seat. Limiting fasteners are mounted on the support seats, and the upper surface of the limiting fasteners has an arc groove. A limiting slide rod is mounted on the mounting plate corresponding to the arc groove. The limiting slide rod inserts into the arc groove to limit the rotation of the mounting plate. The rotation of the mounting plate is used to adjust the density of the prepreg fabric, and the rotation of the corner needle plates is used to adjust the yarn density on both sides of the prepreg fabric width. The controller automatically adjusts the prepreg fabric density based on the detection signal from the width detection device.

[0011] A further aspect of the solution is as follows: the mounting plate is fixed on the rotating base plate, the rotating base plate is connected and fixed to the rotating shaft, and the corner brackets are respectively provided on both sides of the rotating base plate. The corner brackets include a sliding support plate, the sliding support plate supports the corner pin plate, and the corner pin plate is connected to a rotating connecting piece, which slides on the sliding support plate. An arc groove is provided on the sliding support plate, and a limit pin is provided on the rotating connecting piece. The limit pin is inserted into the arc groove to limit the rotation of the corner pin plate.

[0012] The solution is further described as follows: The yarn arrangement device is a yarn arrangement device that extends and contracts to both sides of the yarn row centerline to adjust the yarn row density. It includes comb pins, a mounting plate, and a mounting base placed on the frame. The mounting plate is mounted on the mounting base, and the comb pins are arranged at intervals and fixed on the mounting plate. The comb pins are used to pass through the fiber yarns. The mounting plate is composed of multiple mounting plates that are sequentially hinged. The center of the mounting plate coincides with the yarn row centerline. Corner pin plates are respectively set on the outer side of the mounting plates at both ends of the mounting plate through corner brackets. The mounting plate and the mounting base are provided with two sets of sequentially hinged connecting rods. The midpoints of the two sets of sequentially hinged connecting rods are hinged to each other to form multiple parallelograms that are connected in series. Multiple sequentially hinged mounting plates are fixed on one set of sequentially hinged connecting rods of the two sets of sequentially hinged connecting rods. The hinge axis of the multiple mounting plates is coaxial with the hinge axis of the set of connecting rods. The center line of the hinge axis of the multiple parallelograms is coincident with the axis of the midpoint of the length of the mounting plate. Multiple drive support blocks are provided at the lower end of the multiple parallelograms. The hinge axis of the multiple parallelograms is rotatably connected to the multiple drive support blocks. The multiple drive support blocks are horizontally connected together by a telescopic drive rod. The number of interconnected and hinged parallelograms is odd. A dividing rod is provided between each set of connecting hinge axes of the central parallelogram. The dividing rod is fixed to the mounting base and located at the center of the mounting plate. A guide groove is provided on the dividing rod. Each set of connecting hinge axes of the central parallelogram is inserted into the guide groove and can slide up and down on the dividing rod. Multiple mounting plates are equidistantly distributed to both sides of the center of the mounting plate, forming two groups of mounting plates. The telescopic drive rod has threads on both ends, with positive and negative threads that are mirror images of each other. The telescopic drive rod is a sliding smooth rod between the positive and negative threads. The two groups of mounting plates... The drive support blocks of the two outer mounting plates are respectively connected to the positive and negative threads of the telescopic drive rod through corresponding threaded holes. The drive support blocks of multiple mounting plates between the two outer mounting plates are respectively slidably connected to the sliding smooth rod of the drive rod through through holes. When the drive rod is rotated, the positive and negative threads of the drive rod with threaded drive support blocks drive the two outer mounting plates of the two sets of mounting plates to move in opposite directions. The outer mounting plates moving in opposite directions are driven by the parallelogram connecting rods connected in series through the drive support blocks with through holes to expand and contract the two sets of mounting plates at equal distances centered on the dividing point, thereby realizing the adjustment of the yarn pack density based on the yarn pack centerline.

[0013] The solution further includes: the corner bracket comprising a corner adjusting rod and a support plate; the support plate is connected to and positioned below the mounting plate and moves synchronously with it; the corner pin plate is fixedly connected to the corner adjusting rod; one end of the corner adjusting rod is rotatably connected to the support plate via a pin; a limiting arc groove is provided on the support plate; the other end of the corner adjusting rod is connected to a threaded pin; the pin is inserted into the limiting arc groove and locked by a nut; when the corner pin plate needs adjustment, the nut is loosened, and the corner adjusting rod is rotated within the limiting arc groove; a scale is affixed to the upper surface of the mounting base.

[0014] The solution further includes: the correction device comprising two "U"-shaped correction sensors, the U-shaped slots of the two "U"-shaped correction sensors being arranged opposite each other on a bracket with a scale; the film unwinding roller of the film unwinding unit and the resin film unwinding roller of the resin film unwinding unit are respectively mounted on the frame of the film unwinding unit and the frame of the resin film unwinding unit; the frame is mounted on a guide rail by a slider, and the frame is driven by an electric cylinder to move horizontally left and right along the guide rail to position the film unwinding roller and the resin film unwinding roller; the film released from the film unwinding roller and the resin film released from the resin film unwinding roller pass through the U-shaped slots of the two oppositely arranged "U"-shaped correction sensors respectively; in: The adhesive film includes an adhesive layer and PE film and release paper attached above and below the adhesive layer. The operation of making the adhesive layer of the adhesive film cover the width of the yarn row includes: first, determining the center line of the adhesive layer of the adhesive film on the unwinding roller by measurement; peeling off the PE film covering the upper surface of the adhesive layer and winding it up by the PE film take-up roller; then, adjusting the left and right movement of the frame to align the center line of the adhesive layer with the center line of the yarn row, so that the adhesive layer of the adhesive film covers the width of the yarn row; feeding the adhesive layer with release paper attached to the bottom side together with the yarn row into the pressing unit; and simultaneously positioning the "U"-shaped correction sensors set on both sides of the adhesive film according to the measured data using a ruler. The resin film includes a resin layer and PE film and release paper attached above and below the resin layer. The operation of making the resin layer of the resin film cover the width of the yarn row includes: first, determining the center line of the resin layer of the resin film on the resin film unwinding roller by measurement; peeling off the PE film covering the upper surface of the resin layer and winding it up by the resin film PE film take-up roller; then, adjusting the left and right movement of the frame to align the center line of the resin layer with the center line of the yarn row, so that the resin layer of the resin film covers the width of the yarn row; feeding the resin layer with release paper attached to the upper side and the yarn row together into the pressing unit; and simultaneously positioning the "U"-shaped correction sensors set on both sides of the resin film according to the measured data using a ruler. When the system is running, if the correction sensor detects that the film release roller deviates from the left or right direction when releasing the film, that is, when the center line of the film layer deviates, or if the resin film release roller deviates from the left or right direction when releasing the resin film, that is, when the center line of the resin layer deviates, the control electric cylinder drives the frame to move horizontally left and right along the guide rail to correct the deviation.

[0015] The solution further includes: adjusting the yarn density and the yarn width (based on the center line of the yarn stack) of the yarn stack device. Step 1: Adjust the yarn feeding device (3) according to the technical requirements of the prepreg so that the fiber yarn (2) released by the yarn feeding unit (1) is fed through the yarn feeding device to form a yarn pack (201) that meets the width and surface density requirements of the finished dipped yarn (202). At the same time, leave adjustment margin for the middle section of the comb steel needle mounting plate and the corner needle plate sections on both sides of the mounting plate of the yarn feeding device. Step 2: Obtain the thickness data of each section of the PVC-impregnated yarn. When a deviation occurs in the middle section of the PVC-impregnated yarn fabric, if a yarn arrangement device that adjusts the yarn density by rotating around the yarn centerline is used, the rotating shaft is driven to rotate, causing the mounting plate to rotate and adjusting the yarn density of the yarn, thereby achieving adjustment of the yarn density in the middle section of the PVC-impregnated yarn fabric; if a yarn arrangement device that adjusts the yarn density by extending and contracting to both sides around the yarn centerline is used, the telescopic drive rod is driven to rotate, causing the two sets of mounting plates to expand and contract at equal distances, thereby adjusting the yarn density of the yarn, thereby achieving adjustment of the yarn density in the middle section of the PVC-impregnated yarn fabric; When deviations occur on both sides of the dipped yarn fabric, rotate the corner pin plates on both sides of the mounting plate to adjust the yarn density on both sides of the dipped yarn fabric. Step 3: Obtain the width data of the dipped yarn; when there is a deviation in the width of the dipped yarn, the width of the dipped yarn can be adjusted by reducing or increasing the yarn at the end of the corner needle plate.

[0016] The beneficial effects of this invention are: This invention first ensures that all "feeds"—raw materials such as carbon fiber and resin film—are centrally fed, which lays the foundation for an automatic adjustment system. This achieves: 1) The system uses non-contact measurement during the width detection process, making the measurement intelligent and data-driven, avoiding errors caused by manual measurement and improving detection accuracy.

[0017] 2) After automatically checking the width of the prepreg fabric, the fiber content and width of the prepreg fabric are automatically adjusted, including fine-tuning the fiber content at both edges of the product. This reduces tedious manual adjustments and avoids the need for "experienced operators" to handle the task, making the adjustment process simple.

[0018] 3) The entire system ensures that all materials are fed from the center of the production line, defining a "base position" identification method for material release at each location. This prevents quality issues caused by misalignment among numerous rolls being unwound and rewounded. This "unified standard" simplifies the process.

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the system structure of the present invention; Figure 2 This is a schematic diagram of the centered layout of the system of the present invention; Figure 3 This is a schematic diagram of the ruler pasting layout of the present invention; Figure 4 This is a schematic diagram of the contact width detection device of the present invention; Figure 5 This is a schematic diagram of the non-contact width detection device of the present invention; Figure 6 This is a schematic diagram of the correction device structure of the present invention; Figure 7 This is a schematic diagram of the structure of a yarn feeding device according to the present invention; Figure 8 This is a top view schematic diagram of the structure of a yarn feeding device according to the present invention; Figure 9 This is a schematic diagram of a reducer drive structure for a yarn feeding device. Figure 7 Enlarged view of part A; Figure 10 This is a schematic diagram of a corner needle plate structure for a yarn feeding device. Figure 7 Enlarged view of part B; Figure 11 This is an isometric schematic diagram of another yarn feeding device structure according to the present invention; Figure 12 This is a front view of another yarn feeding device of the present invention; Figure 13 This is a top view schematic diagram of another yarn feeding device of the present invention; Figure 14 This is a schematic diagram of a screw-driven structure for another yarn feeding device. Figure 13 AA sectional view. Detailed Implementation

[0021] An automatic adjustment operating system for a prepreg production line, see [link / reference] Figure 1 to Figure 14 The system includes a yarn feeding unit 1 and a yarn discharging device 3. The yarn feeding unit 1 includes a yarn feeding frame 101 and a yarn collecting plate 102. The fiber yarn 2 released from the yarn feeding unit 1 through the yarn collecting plate 102 passes through the guide roller 4 and first enters the yarn discharging device 3 for discharging. After being discharging by the yarn discharging device 3, the fiber yarn 2 forms a yarn strip 201 with a certain width. The yarn strip 201 enters the yarn spreading unit 5, pressing unit 6, cooling plate 7, traction roller 8, and film-coating pressure roller 10 arranged sequentially after the yarn discharging device 3. Among them, the yarn spreading unit 5 is composed of multiple yarn spreading rollers 501 arranged in sequence, and the pressing unit 6 has multiple sets of pressing rollers 601 and heating plate 602. Below the yarn spreading unit 5, there is a film unwinding unit 11, which contains a film unwinding roller 1101. Above the yarn spreading unit 5, there is a resin film unwinding unit 12, which includes a resin film unwinding roller 1201, a PE film take-up roller 1202, and a cooling roller 1203. After the PE film take-up roller 1202 takes up the PE film, the resin film delivered by the resin film unwinding roller 1201 contains only a resin adhesive layer and release paper. After the traction rollers 8, there is a release paper peeling roller 9 and a release paper take-up unit 13. Above the coating pressure rollers 10, there is a PE film unwinding unit 14. After the coating pressure rollers 10, there is a finished product take-up unit 15. The adhesive film unwinding unit 11 releases the adhesive layer a (bottom) of the adhesive film through the adhesive film unwinding roller 1101 and the resin film b (top) released by the resin film unwinding unit 12, clamping the yarn row 201 together with the yarn row 201 and entering the pressing unit 6. After the adhesive film and resin film are pressed together with the yarn row 201 by the pressing unit 6, they form the dipped yarn web 202. After being cooled by the cooling plate 7, the dipped yarn web 202 is pulled out by the traction roller 8. The dipped yarn web 202 is first peeled off by the release paper peeling roller 9 and the release paper winding unit 13, and then enters the coating pressure roller 10 together with the PE film released from the PE film unwinding unit 14. After coming out of the coating pressure roller 10, the dipped yarn web covered with PE film is wound up by the finished product winding unit 15. During system installation: (e.g.) Figure 2 As shown, the yarn collecting plate 102, the yarn feeding device 3, the heating plate 602, the cooling plate 7, the air shaft of the film unwinding unit 11 film unwinding roller 1101, the air shaft of the resin film unwinding unit 12 resin film unwinding roller 1201, and the air shaft of the finished product winding unit 15 are each provided with a center mark. The sequential arrangement is based on the line 19 connecting the center marks as the reference axis. During system operation: Align the center line of yarn row 201 and the center line of dipped yarn width 202 with the center mark line 19; A correction device 16 is provided between the film unwinding roller 1101 and the pressing unit 6 in the film unwinding unit 11, and between the resin film unwinding roller 1201 and the pressing unit 6 in the resin film unwinding unit 12. The correction device 16 is used to correct the film unwound from the film unwinding roller 1101, so that the adhesive layer a of the film covers the yarn stack 201 from the bottom surface, and to correct the resin film unwound from the resin film unwinding roller 1201, so that the resin layer b of the resin film covers the yarn stack 201 from the top surface. A thickness detector 18 and a width detector 17 are provided between the traction roller 8 and the coating pressure roller 10. The thickness detector 18 is used to detect the density (thickness) uniformity of the dipped yarn width output from the traction roller, and the width detector 17 is used to detect the width of the dipped yarn width. A controller (not shown in the figure) receives the detection signals from the width detector 17 and the thickness detector 18, and adjusts the yarn density and the yarn width based on the yarn center line according to the detection signal requirements.

[0022] Specifically, to visually observe whether the width of the yarn stack and the width of the dipped yarn are within the set width, scales are attached outwards from both sides of the center mark line 19 of the yarn collecting plate 102, the yarn stacking device 3, the heating plate 602, the cooling plate 7, and the air expansion shafts of the adhesive film unwinding unit 11, the resin film unwinding unit 12, and the finished product winding unit 15, using the edge of the finished dipped yarn width as the base point. Figure 3 As shown, the initial scale value of the scale is the nominal width of the finished dipped yarn width 202 (1000mm as shown in the figure represents the width of the finished dipped yarn width 202). The scale is then divided into millimeter intervals, and the values ​​are sequentially marked by multiplying the millimeter interval by 2 and adding it to the width value of the finished dipped yarn width. This is used to visually represent the width values ​​of the yarn rows (201) and the dipped yarn width (202) that have passed through (because the two sides are symmetrical, the reading from one side represents the overall width), which facilitates operation and control.

[0023] The correction device 16 therein is as follows Figure 6 Combination Figure 1 As shown ( Figure 6(Only one side of the correction device is shown). The correction device 16 includes two "U"-shaped correction sensors 1601. The U-shaped slots (signal sensing areas) of the two "U"-shaped correction sensors 1601 are arranged opposite each other on a bracket 1603 with a scale 1602. The film unwinding roller 1101 of the film unwinding unit 11 and the resin film unwinding roller 1201 in the resin film unwinding unit (12) are respectively mounted on the frame 1102 of the film unwinding unit 11 and the resin film. On the frame 1204 of the unwinding unit 12, the frame rests on the guide rail via a slider seat. The frame 1102 and 1204 are driven by an electric cylinder to move horizontally left and right along the guide rail to position the adhesive film unwinding roller 1101 and the resin film unwinding roller 1201. The adhesive film with adhesive layer a is released from the adhesive film unwinding roller 1101 and the resin film with resin layer b is released from the resin film unwinding roller (1201) and respectively passes through the U-shaped slots of two oppositely arranged "U"-shaped correction sensors 1601. in: The adhesive film includes an adhesive layer and PE film and release paper attached above and below the adhesive layer. In actual use, the position of the adhesive layer of each roll of adhesive film is deviated, and the adhesive film itself also has deviations. During operation, in addition to the initial positioning adjustment, dynamic adjustment is also required. Therefore, the operation of making the adhesive layer of the adhesive film cover the width of the yarn row includes: first, determining the center line of the adhesive layer of the adhesive film on the unwinding roller 1101 by measurement; peeling off the PE film covering the upper surface of the adhesive layer and winding it up by the PE film take-up roller 20; then, adjusting the left and right movement of the frame to align the center line of the adhesive layer with the center line of the yarn row, so that the adhesive layer a of the adhesive film covers the width of the yarn row; feeding the adhesive layer with release paper attached to the bottom side together with the yarn row 201 into the pressing unit 6; and simultaneously positioning the "U"-shaped correction sensors 1601 set on both sides of the adhesive film according to the measured data using a ruler. Similarly, The resin film includes a resin layer and PE film and release paper attached above and below the resin layer. The operation of making the resin layer b of the resin film cover the width of the yarn row includes: first, determining the center line of the resin layer of the resin film on the resin film unwinding roller 1201 by measurement; peeling off the PE film covering the upper surface of the resin layer and winding it up by the resin film PE film take-up roller 1202; then, adjusting the left and right movement of the frame to align the center line of the resin layer with the center line of the yarn row, so that the resin layer b of the resin film covers the width of the yarn row; feeding the resin layer with release paper attached to the upper side together with the yarn row 201 into the pressing unit 6; and simultaneously positioning the "U"-shaped correction sensors 1601 set on both sides of the resin film according to the measured data using a ruler. When the system is running, when the correction sensor 1601 senses that the film release roller 1101 deviates from the left or right direction when releasing the film, that is, when the center line of the film layer deviates, or when the resin film release roller 1201 deviates from the left or right direction when releasing the resin film, that is, when the center line of the resin layer deviates, the control electric cylinder drives the frame 1102 and 1204 to move horizontally left and right along the guide rail to correct the deviation.

[0024] In this embodiment, the thickness measuring instrument is a standard device purchased from the market, which detects the thickness (density) of the object being measured by receiving laser emission, and will not be described in detail here.

[0025] In this embodiment, the horizontal arrangement with the center mark line as the reference axis, and the center line of the yarn row and the center line of the dipped yarn width coinciding with the center mark line (i.e. the process center line), ensures that the system will never deviate when adjusting the yarn rowing equipment. Compared with traditional moving alignment adjustment, this method only requires lengthening or shortening the yarn row by equal distances on both sides of the center line, making the adjustment extremely simple.

[0026] In this embodiment, there are two preferred options for the width detection device: The first type, such as Figure 4 As shown, the width detection device 17 is a laser touch-type width detection device, including a magnetic ruler base 1701, a magnetic ruler strip 1702 attached to the magnetic ruler base 1701, and two relatively movable magnetic induction blocks 1703 arranged along the magnetic ruler base 1701. The relative movement of the two magnetic induction blocks 1703 is achieved by adjusting the screws 1704 arranged in the magnetic ruler base 1701. A display 1705 reads the data of the magnetic ruler strip 1702 sensed by the magnetic induction blocks 1703. Laser linear illumination lamps 17 are respectively arranged on the two magnetic induction blocks. 06. During testing, the relative movement of the two magnetic induction blocks 1703 can be adjusted by a servo stepper motor or a manual handle 1707. When the vertical or oblique laser line 1708 of the laser linear irradiation lamp 1705 on the two magnetic induction blocks touches both sides of the dipped yarn web 202, the width value of the dipped yarn web 202 can be obtained from the data read from the two magnetic induction blocks 1703. Wherein, the laser linear irradiation touching both sides of the dipped yarn web can be determined by manual visual observation or by a laser sensor set under the dipped yarn web.

[0027] The second type: such as Figure 5As shown, the width detection device 17 is a non-contact photographic width detection device, which includes linear lighting lights 1708 and 1709 respectively arranged above and below the passing dipped yarn web 202, and a camera 1710 arranged above the dipped yarn web. During detection, the linear lighting lights 1708 and 1709 illuminate the dipped yarn web from opposite directions to form a linear light line perpendicular to the reference axis 15. The linear light line forms a bright line on the surface of the dipped yarn web 202. The camera 1710 captures the bright line, and then compares the length of the captured bright line with the standard bright line length to obtain the width value of the dipped yarn web. The standard bright line length is the standard bright line length data that is obtained and stored in advance based on the standard dipped yarn web width.

[0028] In this embodiment, the yarn feeding device 3 has two optimal equipment solutions for adjusting the width of commonly used 1000mm wide PS-1000 or 1300mm wide PS-1270 prepreg fabrics: Option 1: As Figure 7 , 8As shown in Figures 9 and 10, the yarn arrangement device is a yarn arrangement device that rotates to adjust the yarn density around the center line of the yarn row. It includes comb pins 301, a mounting plate 302, and a mounting base 303 placed on the frame. The comb pins 301 are spaced apart and fixed on the mounting plate 302, and the fiber yarn passes through the spaces between the comb pins 301. The mounting plate 302 is rotatably fixed on the mounting base 303 via a rotating shaft 304 and a flange bearing seat 305. The rotating shaft 304 is positioned at the center of the length of the mounting plate 302, aligned with the yarn row. The center lines 19 of the yarn bundle coincide. A reducer 307 driven by a motor 306 is connected to the mounting base 303. The output shaft 307-1 of the reducer 307 is connected to a rotating shaft 304 via a backrest wheel 307-2, which drives the mounting plate 302 to rotate. The rotation of the mounting plate by the rotating shaft forms the adjustment of the yarn bundle width based on the center line of the yarn bundle. Corner needle plates 309 are respectively provided on both sides of the mounting plate 302 via corner brackets 308. Comb bars that connect with the mounting plate 302 are arranged on the corner needle plates 309. The steel needle 301, the corner needle 309, is inserted into the mounting plate 302 as the corner pivot point of the corner needle plate 309. Support seats 3012 are respectively provided on the mounting bases 303 on both sides of the flange bearing seat 305. Limiting fasteners 3012-1 are provided on the support seats 3012. An arc groove 3012-2 is provided on the upper end face of the limiting fastener 3012-1. A limiting slide rod 302-1 is provided on the mounting plate 302 corresponding to the arc groove 3012-2. The limiting slide rod 3012-1... 2-1 Inserting the arc groove 3012-2 limits the rotation of the mounting plate 302. The rotation of the mounting plate 302 is used to adjust the density of the prepreg fabric. The rotation of the corner needle plate 309 is used to adjust the yarn density on both sides of the prepreg fabric width. The length of the corner needle plate 309 is 2%-5% of the length of the comb pin mounting plate 302. The controller controls the motor 306 to rotate automatically with the yarn row centerline as the center to adjust the yarn row, as well as the density and width of the prepreg fabric.

[0029] In the first embodiment: the mounting plate 302 is fixed on the rotating base plate 3010. Connecting pieces 3010-1 are spaced apart along the elongation direction on the rotating base plate 3010. The mounting plate 2 is connected and fixed to the connecting pieces 3010-1. The middle section of the rotating base plate 3010 is thickened and connected and fixed to the rotating shaft 304. For limiting the rotation of the corner pin plate 309: corner brackets 308 are respectively disposed on both sides of the rotating base plate 3010. Each corner bracket 308 includes a sliding support. Plate 308-1, sliding support plate 308-1 holds corner needle plate 309, corner needle plate 309 is connected to rotating connecting piece 3011, rotating connecting piece 3011 slides on sliding support plate 308-1; arc groove 308-1-1 is provided on sliding support plate 308-1, limit pin 3011-1 is provided on rotating connecting piece, limit pin 3011-1 is inserted into arc groove 308-1-1 to limit the rotation of corner needle plate 309.

[0030] Furthermore, the first approach involves mounting the comb pin mounting plate on a mounting base. A reducer and motor are fixed to the mounting base, and bearings are mounted on the base using bearing housings. The mounting plate is then fixed to a rotating base plate, whose rotating shaft is installed within the bearings. A coupling connects the rotating base plate to the reducer, and a closed-loop stepper motor provides power. This power is amplified by a worm gear reducer, causing the rotating base plate to rotate, thus achieving variations in the horizontal working width. Limiting support fixtures are installed on both sides of the bearing housing on the base. These fixtures have guide grooves, allowing the limiting rods below the rotating base plate to slide within these grooves during rotation. Simultaneously, the limiting support fixtures also stabilize the rotating base plate, preventing the comb pin mounting plate from swaying up and down, or back and forth and left and right, thus ensuring the stability of the comb pin mounting plate during operation. In the reed section: General-purpose comb needles are inserted into the mounting plate. The reed is made as a detachable component. The outer side of the needle mounting plate uses corner needle plate structures on both sides. The corner needle plates slide on a sliding support plate via rotating connecting pieces. A guide slot is cut into the sliding support plate. Rotating connecting pieces are installed on the corner needle plates of the outer side of the needle mounting plate, and are fixed with screws passing through the slots and the sliding support plate. When angle adjustment is needed, the screws are loosened for manual adjustment. The change in working width in different directions of the prepreg's horizontal projection is controlled by a motor. Using a motor for automatic adjustment not only saves manpower but also shortens adjustment time. Width adjustment is precise (mainly due to small-angle fine-tuning each time), and the use of a worm gear reducer with a self-locking function increases the stability of the reed during yarn threading and operation. Side needle mounting plates with a length ranging from 2% to 5% of the total width are installed on both sides, which can be used to fine-tune the yarn density on both sides to control the weight.

[0031] The second option: Figure 11 , 12As shown in Figures 13 and 14. The yarn arrangement equipment is a yarn arrangement device that extends and contracts to both sides of the yarn row centerline to adjust the yarn row density. It includes comb pins 301, a mounting plate 302, and a mounting base 303 placed on the frame. The mounting plate 302 is mounted on the mounting base 303. The comb pins 301 are arranged at intervals and fixed on the mounting plate 302. The intervals between the comb pins 301 are used to pass through the fiber yarn. A scale 303-1 is affixed to the upper surface of the mounting base 303. The mounting plate 302 is composed of multiple mounting sub-plates 302-2 that are sequentially hinged together. The center of the mounting plate coincides with the yarn row centerline. Angle pin plates 3066 are respectively provided on the outer sides of the mounting plates 302-2 at both ends of the plate 302 via angle brackets 3055. The angle pin plates 3066 are arranged with comb pins 301 that connect with the mounting plates. The multiple mounting plates 302-2 are connected and opened in a straight line with their hinges as pivots, which adjusts the width and density of the prepreg fabric. The rotation of the angle pin plates 3066 adjusts the yarn density on both sides of the prepreg fabric width. The comb pins 3011 at one end of the angle pin plate 3066 are inserted into the mounting plates 302-2 as the pivot point of the angle pin plate 3066.

[0032] To enable the multiple mounting plates 302-2 to close and unfold in a straight line at equal distances with their hinges as pivots, two sets of sequentially hinged connecting rods 3077 and 3088 are provided between the mounting plate 302 and the mounting base 303. The midpoint c of the length of the two sets of sequentially hinged connecting rods 3077 and 3088 is hinged to each other to form multiple interconnected parallelograms 3099. The multiple interconnected parallelograms have a linkage function, that is, pulling one side of the parallelogram can drive the parallelograms behind it to move synchronously at equal distances. For this purpose, multiple sequentially hinged mounting plates 302-2 are fixed on a set of multiple sequentially hinged connecting rods 3077 of two sets of multiple sequentially hinged connecting rods. The hinge axis of the multiple mounting plates 302-2 hinged together 302-3 is coaxial with the hinge axis of the set of multiple connecting rods. The center line of the hinge axis of the multiple parallelograms connected in series coincides with the axis of the midpoint 302-2-1 of the length of the mounting plate. Multiple drive support blocks 3044-1 are provided at the lower end of the multiple parallelograms along a straight line. The hinge axis of the multiple parallelograms 3099 connected in series is rotatably connected to the multiple drive support blocks 3044-1. The multiple drive support blocks 3044-1 are horizontally connected together by a telescopic drive rod 3044, which is provided in the mounting base 303. The number of interconnected parallelograms is odd. A dividing rod 3099-1 is provided between each set of connecting rod hinge axes of the central parallelogram. The dividing rod 3099-1 is fixed to the mounting base 303 and is located at the center of the mounting plate 302. A guide groove 3099-2 is provided on the dividing rod 3099-1, and each set of connecting rod hinge axes of the central parallelogram is inserted into the guide groove. The boundary rod can slide up and down. Multiple mounting plates 302-2 are symmetrically distributed on both sides of the center of the mounting plate 302, forming two sets of mounting plates. The telescopic drive rod 3044 has threads on both ends, which are divided into positive and negative threads 3044-2 and 3044-3. The positive thread 3044-2 and the negative thread 3044-3 are mirror images of each other. The telescopic drive rod 3044 slides between the positive thread 3044-2 and the negative thread 3044-3. The guide rod 3044-4, the drive support blocks 3044-1 of the two outer mounting plates 302-2 of the two sets of mounting plates 302-2 are respectively threaded to the positive and negative threads of the telescopic drive rod 3044 through corresponding threaded holes. The drive support blocks of multiple mounting plates between the two outer mounting plates are respectively slidably connected to the sliding guide rod of the telescopic drive rod 3044 through through holes. When the telescopic drive rod 3044 is rotated, the threaded drive support blocks on the positive and negative threads of the telescopic drive rod 3044 drive the two outer mounting plates 302-2 of the two sets of mounting plates 302-2 to move in opposite directions. The outer mounting plates 302-2 moving in opposite directions are driven by the parallelogram connecting rods through the drive support blocks with through holes to expand and contract the two sets of mounting plates 302-2 at equal distances with the dividing point as the center, thereby realizing the adjustment of the yarn density based on the yarn center line.

[0033] In the second scheme, the rotation of the telescopic drive rod 3044 can be controlled by a servo stepper motor. The controller automatically adjusts the prepreg density and width by controlling the servo stepper motor based on the detection signal from the width detection device 17. Another option is manual control. As shown in the figure, the telescopic drive rod 3044 extends from both ends of the mounting base 303. A rotating handle 3044-5 is provided at the extended end of the telescopic drive rod 3044. A position indicator 3044-6 is provided on the lead screw at the front end of the rotating handle. The position indicator 3044-6 is fitted onto the telescopic drive rod 3044 and uses front and rear markings to determine the forward and reverse rotation of the telescopic drive rod 3044. It also counts the number of rotations of the telescopic drive rod 3044 and displays the closing and unfolding distance between adjacent mounting plates based on the number of rotations. In the second scheme: the corner bracket 3055 includes a corner adjusting rod 3055-1 and a support plate 3055-2. The support plate 3055-2 is connected to the mounting plate 302-2 and is positioned below the mounting plate 302-2, moving synchronously with the mounting plate. The corner pin plate 3066 is connected and fixed to the corner adjusting rod 3055-1. One end of the corner adjusting rod 3055-1 is rotatably connected to the support plate 3055-2 via a shaft pin. A limiting arc groove 3055-3 is provided on the support plate 3055-2. The other end of the corner adjusting rod is connected to a threaded pin 3055-4. The pin 3055-4 is inserted into the limiting arc groove 3055-3 and locked by a nut. When the corner pin plate 3066 needs to be adjusted, the nut is loosened, and the corner adjusting rod 3055-1 is rotated in the limiting arc groove 3055-3.

[0034] The second design employs a symmetrical folding mechanism, where the rotation of the telescopic drive rod extends and retracts the connecting rod to control width and density. A handwheel controls the rotation of the telescopic drive rod, allowing for overall widening or narrowing. The design utilizes a position indicator and scale to display real-time adjustment data, enabling users to clearly understand the current operating status of the device and accurately position the yarn. The connecting rods at both corner needle plates are adjustable. By adding a guide rod, the adjusting rod can be adjusted horizontally by ±5° (the length of the adjustable rod on one side ranges from 2% to 5% of the total width), facilitating fine-tuning of the gap width on both sides and in the middle to adapt to process requirements.

[0035] Mounting plate 302 is mounted on mounting base 303. The telescopic drive rod can also be a single lead screw. The screw has different shaft diameters and threads at different positions, which facilitates the installation of different drive support blocks. At the same time, different pitches are machined to control the different displacements of each connecting rod fixedly connected to the drive support block when the lead screw rotates, so as to ensure that the steel pin spacing is the same.

[0036] In the above-mentioned prepreg width and edge yarn fiber density adjustment system, the width of the fiber surface density change on both sides caused by each variety is constant (the density change on both sides of the fiber surface is accurately detected by the thickness gauge, and the current yarn density change can be known. The thickness gauge outputs three parameters of surface density: left, middle and right. The middle surface density is adjusted by the telescopic reed's telescopic amount or the straight reed, i.e., the rotation angle of the mounting plate. The density values ​​on the left and right sides are adjusted by adjusting the telescopic reed or the straight reed, i.e., the angle of the edge corner needle plate).

[0037] Therefore: the adjustment of yarn density and the adjustment of yarn width based on the center line of the yarn stack are: Step 1: Adjust the yarn feeding device 3 according to the technical requirements of the prepreg so that the fiber yarn 2 released from the yarn feeding unit 1 is fed through the yarn feeding device to form a yarn pack (201) that meets the width and surface density requirements of the finished dipped yarn width 202. At the same time, allowance is made for the adjustment of the middle section of the comb pin mounting plate and the corner pin plate sections on both sides of the mounting plate of the yarn feeding device. The operation of adjusting the margin is as follows: When using a yarn feeding device that adjusts the yarn density by rotating around the center line of the yarn pack, the rotating shaft rotates so that the mounting plate and the line connecting the center mark are set at an angle of 80 degrees or 100 degrees, leaving an adjustment range of 10 degrees. When using a yarn arrangement device that adjusts the yarn density by extending and contracting to both sides with the center line of the yarn row as the center, rotate the screw so that the expansion and contraction of the two sets of mounting plates centered on the dividing point have an adjustment margin of 10% relative to the finished width requirement. Step 2: Obtain the thickness data of each section of the PVC-impregnated yarn. When a deviation occurs in the middle section of the PVC-impregnated yarn fabric, if a yarn arrangement device that adjusts the yarn density by rotating around the yarn centerline is used, the rotating shaft is driven to rotate, causing the mounting plate to rotate and adjusting the yarn density of the yarn, thereby achieving adjustment of the yarn density in the middle section of the PVC-impregnated yarn fabric; if a yarn arrangement device that adjusts the yarn density by extending and contracting to both sides around the yarn centerline is used, the telescopic drive rod is driven to rotate, causing the two sets of mounting plates to expand and contract at equal distances, thereby adjusting the yarn density of the yarn, thereby achieving adjustment of the yarn density in the middle section of the PVC-impregnated yarn fabric; When deviations occur on both sides of the dipped yarn fabric, rotate the corner pin plates on both sides of the mounting plate to adjust the yarn density on both sides of the dipped yarn fabric. Step 3: Obtain the width data of the dipped yarn; when there is a deviation in the width of the dipped yarn, the width of the dipped yarn can be adjusted by reducing or increasing the yarn at the end of the corner needle plate.

[0038] In the aforementioned prepreg width and selvage fiber density adjustment system, the required number of carbon fibers can be accurately calculated based on different prepreg types. This system first ensures that all "feeding" materials—carbon fibers and resin films, etc.—are fed in a centered position, which forms the basis for the automatic adjustment system. This achieves: 1) The system uses non-contact measurement during the width detection process, making the measurement intelligent and data-driven, avoiding errors caused by manual measurement and improving detection accuracy.

[0039] 2) After automatically checking the width of the prepreg product, the fiber content of the prepreg and the product width are automatically adjusted, including precise adjustment of the fiber content at both edges of the product. This reduces tedious manual adjustments and avoids the need for "experienced operators" to handle the task, making the adjustment process simple.

[0040] 3) The entire system ensures that all materials are fed from the center of the production line, defining a "base position" identification method for material release at each location. This prevents quality issues caused by misalignment among numerous rolls being unwound and rewounded. This "unified standard" simplifies the process.

Claims

1. An automatic adjustment operating system for a prepreg production line, comprising a yarn collecting plate (102) and a yarn discharging device (3), characterized in that, The fiber yarn (2) released from the yarn collecting plate (102) enters the yarn dispensing device (3) for dispensing. After being dispensed by the yarn dispensing device (3), the fiber yarn forms a yarn stack (201) with a certain width. The yarn stack enters the yarn spreading unit (5), pressing unit (6), cooling plate (7), traction roller (8), and film-coating pressure roller (10) arranged in sequence after the yarn dispensing device (3). Among them, the yarn spreading unit (5) is composed of multiple yarn spreading rollers (501) arranged in sequence, and the pressing unit (6) has multiple sets of pressing rollers (601) and heating plate (602). A film unwinding unit (11) is provided below the yarn spreading unit (5), and a film unwinding roller (1101) is provided in the film unwinding unit (11). A resin film unwinding unit (12) is provided above the yarn spreading unit (5). The resin film contains a resin adhesive layer and release paper. A release paper peeling roller (9) and a release paper winding unit (13) are provided after the traction roller (8). A PE film unwinding unit (14) is provided above the film coating pressure roller (10). A finished product winding unit (15) is provided after the film coating pressure roller (10). The adhesive film unwinding unit (11) releases the adhesive layer of the adhesive film through the adhesive film unwinding roller (1101), and the resin film released by the resin film unwinding unit (12) enters the pressing unit (6) together with the yarn bundle (201). The pressing unit (6) has multiple sets of pressing rollers (601) and heating plates (602). After the adhesive film and resin film are pressed together with the yarn bundle by the pressing unit (6), they form the dipped yarn web (202). After being cooled by the cooling plate (7), the yarn is pulled out by the traction rollers (8). The yarn width (202) is first peeled off by the release paper by the release paper peeling roller (9) and the release paper winding unit (13), and then enters the coating pressure roller (10) together with the PE film released from the PE film unwinding unit (14). After coming out of the coating pressure roller (10), the yarn width covered with PE film is wound up by the finished product winding unit (15). During system installation: the yarn collecting plate (102), yarn feeding device (3), heating plate (602), cooling plate (7), and the air shafts of the adhesive film unwinding unit (11), resin film unwinding unit (12), and finished product winding unit (15) are respectively equipped with center marks, and the sequential arrangement is based on the line (19) connecting the center marks as the reference axis. During system operation: Align the center line of the yarn row (201) and the center line of the dipped yarn width (202) with the center mark; A correction device (16) is provided between the film unwinding roller (1101) and the pressing unit (6) in the film unwinding unit (11), and between the resin film unwinding roller (1201) and the pressing unit (6) in the resin film unwinding unit (12). The correction device (16) is used to correct the film unwinding from the film unwinding roller (1101) so that the adhesive layer (a) of the film covers the yarn row (201) from the bottom surface, and to correct the resin film unwinding from the resin film unwinding roller (1201) so that the resin layer (b) of the resin film is on the yarn row (201). The yarn row (201) is covered; a thickness detector (18) and a width detector (17) are provided between the traction roller (8) and the coating pressure roller (10). The thickness detector (18) is used to detect the density uniformity of the dipped yarn width output from the traction roller, and the width detector (17) is used to detect the width of the dipped yarn width. A controller receives the detection signals from the width detector (17) and the thickness detector (18), and adjusts the yarn row density and the yarn row width based on the center line of the yarn row according to the detection signal requirements.

2. The operating system according to claim 1, characterized in that, The air shafts of the yarn collecting plate (102), yarn feeding device (3), heating plate (602), cooling plate (7), and the adhesive film unwinding unit (11), resin film unwinding unit (12), and finished product winding unit (15) are attached with scales on both sides of the center mark line (19) with the edge of the finished dipped yarn width as the base point. The initial scale value of the scale is the nominal width value of the finished dipped yarn width (202). The scale is then divided into millimeter intervals, and the values ​​are marked sequentially by multiplying the millimeter interval by 2 and adding the width value of the finished dipped yarn width, so as to intuitively represent the width values ​​of the yarn rows (201) and dipped yarn widths (202) that have passed through.

3. The operating system according to claim 1, characterized in that, The width detection device is a laser touch-type width detection device, including a magnetic ruler base, on which a magnetic ruler strip is attached. Two magnetic induction blocks that can be moved and adjusted relative to each other are arranged along the magnetic ruler base. A display reads the data of the magnetic ruler strip sensed by the magnetic induction blocks. A laser linear illumination lamp is arranged on each of the two magnetic induction blocks. During detection, the relative movement of the two magnetic induction blocks is adjusted. When the vertical or oblique laser linear illumination lamps on the two magnetic induction blocks touch the two sides of the dipped yarn width, the width value of the dipped yarn width is obtained from the data read from the two magnetic induction blocks.

4. The operating system according to claim 1, characterized in that, The width detection device is a non-contact photographic width detection device, comprising a linear light fixture positioned above and below the passing dipped yarn web, and a camera positioned above the dipped yarn web. During detection, the linear light fixture illuminates the dipped yarn web horizontally and perpendicularly to the reference axis, forming a bright line on the surface of the dipped yarn web. The camera captures the bright line, and then compares the length of the captured bright line with the standard bright line length to obtain the width value of the dipped yarn web. The standard bright line length is pre-acquired and stored based on the standard dipped yarn web width.

5. The operating system according to claim 1, characterized in that, The yarn arrangement device is a device that adjusts the yarn density by rotating around the center line of the yarn bundle. It includes comb pins, a mounting plate, and a mounting base placed on a frame. The comb pins are spaced apart and fixed on the mounting plate. The mounting plate is rotatably fixed to the mounting base via a rotating shaft and a flange bearing seat. The rotating shaft is positioned at the center of the mounting plate's length, coinciding with the center line of the yarn bundle. A reducer driven by a motor is connected to the mounting base. The output shaft of the reducer is connected to the rotating shaft, driving the mounting plate to rotate. This rotation of the mounting plate forms the yarn arrangement based on the center line of the yarn bundle. For adjusting the width of the yarn, corner needle plates are respectively installed on both sides of the mounting plate via corner brackets. Comb steel needles that connect with the mounting plate are arranged on the corner needle plates. Support seats are respectively installed on the mounting bases on both sides of the flange bearing seat. Limiting fasteners are installed on the support seats. The upper end face of the limiting fasteners is provided with arc grooves. Limiting slide rods are provided on the mounting plate corresponding to the arc grooves. The limiting slide rods are inserted into the arc grooves to limit the rotation of the mounting plate. The rotation of the mounting plate is used to adjust the density of the prepreg fabric, and the rotation of the corner needle plates is used to adjust the yarn density on both sides of the width of the prepreg fabric. The controller automatically adjusts the density of the prepreg fabric based on the detection signal from the width detection device.

6. The operating system according to claim 5, characterized in that, The mounting plate is fixed on the rotating base plate, which is connected and fixed to the rotating shaft. The corner brackets are respectively provided on both sides of the rotating base plate. The corner brackets include a sliding support plate that supports the corner pin plate. The corner pin plate is connected to a rotating connecting piece that slides on the sliding support plate. An arc groove is provided on the sliding support plate, and a limit pin is provided on the rotating connecting piece. The limit pin is inserted into the arc groove to limit the rotation of the corner pin plate.

7. The operating system according to claim 1, characterized in that, The yarn arrangement device is a yarn arrangement device that extends and contracts to both sides of the yarn row centerline to adjust the yarn row density. It includes comb pins, a mounting plate, and a mounting base placed on the frame. The mounting plate is mounted on the mounting base, and the comb pins are fixed on the mounting plate at intervals. The comb pins are used to pass through the fiber yarn. The mounting plate is composed of multiple mounting plates that are sequentially hinged. The center of the mounting plate coincides with the yarn row centerline. Corner pin plates are respectively set on the outer side of the mounting plates at both ends of the mounting plate through corner brackets. The mounting plate and the mounting base are provided with two sets of sequentially hinged connecting rods. The midpoints of the two sets of sequentially hinged connecting rods are hinged together to form multiple parallelograms that are connected in series. Multiple sequentially hinged mounting plates are fixed on one set of sequentially hinged connecting rods of the two sets of sequentially hinged connecting rods. The hinge axis of the multiple mounting plates is coaxial with the hinge axis of the set of connecting rods. The center line of the hinge axis of the multiple parallelograms is coincident with the axis of the midpoint of the length of the mounting plate. Multiple drive support blocks are provided at the lower end of the multiple parallelograms. The hinge axis of the multiple parallelograms is rotatably connected to the multiple drive support blocks. The multiple drive support blocks are horizontally connected together by a telescopic drive rod, which is set in the mounting base. The number of interconnected parallelograms is odd. A dividing rod is provided between each set of connecting hinge axes of the central parallelogram. The dividing rod is fixed to the mounting base and located at the center of the mounting plate. A guide groove is provided on the dividing rod, and each set of connecting hinge axes of the central parallelogram is inserted into the guide groove and can slide up and down on the dividing rod. Multiple mounting plates are symmetrically distributed to both sides of the center of the mounting plate, forming two groups of mounting plates. The telescopic drive rod has threads on both ends, with positive and negative threads that are mirror images of each other. The telescopic drive rod is a sliding smooth rod between the positive and negative threads. The two outer sides of the two groups of mounting plates... The drive support blocks of the mounting plates are respectively connected to the positive and negative threads of the telescopic drive rod through corresponding threaded holes. The drive support blocks of multiple mounting plates between the two outer mounting plates are respectively slidably connected to the sliding smooth rod of the telescopic drive rod through through holes. When the telescopic drive rod is rotated, the threaded drive support blocks on the positive and negative threads of the telescopic drive rod drive the two outer mounting plates of the two sets of mounting plates to move in opposite directions. The outer mounting plates moving in opposite directions are driven by the parallelogram connecting rods through the drive support blocks with through holes to expand and contract the two sets of mounting plates at equal distances centered on the dividing point, thereby realizing the adjustment of the yarn pack density based on the yarn pack centerline.

8. The operating system according to claim 7, characterized in that, The corner bracket includes a corner adjusting rod and a support plate. The support plate is connected to the mounting plate and is positioned below the mounting plate, moving synchronously with it. The corner pin plate is fixedly connected to the corner adjusting rod. One end of the corner adjusting rod is rotatably connected to the support plate via a pin. A limiting arc groove is provided on the support plate. The other end of the corner adjusting rod is connected to a threaded pin. The pin is inserted into the limiting arc groove and locked by a nut. When the corner pin plate needs to be adjusted, the nut is loosened, and the corner adjusting rod is rotated in the limiting arc groove. A scale is affixed to the upper surface of the mounting base.

9. The operating system according to claim 1, characterized in that, The correction device (16) includes two "U"-shaped correction sensors (1601). The U-shaped slots of the two "U"-shaped correction sensors 1601 are arranged opposite each other on a bracket (1603) with a scale. The film unwinding roller (1101) of the film unwinding unit (11) and the resin film unwinding roller (1201) of the resin film unwinding unit (12) are respectively mounted on the frame (1102) of the film unwinding unit (11) and the frame (1201) of the resin film unwinding unit (12). 2) On the frame (1204), the frame rests on the guide rail via a slider seat. The frame (1102) (1204) is driven by an electric cylinder to move horizontally left and right along the guide rail to position the adhesive film unwinding roller (1101) and the resin film unwinding roller (1201). The adhesive film released from the adhesive film unwinding roller (1101) and the resin film released from the resin film unwinding roller (1201) pass through the U-shaped slots of two oppositely arranged "U"-shaped correction sensors (1601) on both sides. in: The adhesive film includes an adhesive layer and PE film and release paper attached above and below the adhesive layer. The operation of making the adhesive layer (a) of the adhesive film cover the width of the yarn row includes: firstly, determining the center line of the adhesive layer of the adhesive film on the unwinding roller (1101) by measurement, peeling off the PE film covering the upper surface of the adhesive layer and winding it up by the PE film winding roller (20), then adjusting the left and right movement of the frame to align the center line of the adhesive layer with the center line of the yarn row, so that the adhesive layer (a) of the adhesive film covers the width of the yarn row, and sending the adhesive layer with release paper attached to the bottom side together with the yarn row (201) into the pressing unit (6), while positioning the "U"-shaped correction sensors (1601) set on both sides of the adhesive film according to the measured data by the ruler; The resin film includes a resin layer and PE film and release paper attached above and below the resin layer. The operation of making the resin layer (b) of the resin film cover the width of the yarn row includes: firstly, determining the center line of the resin layer of the resin film on the resin film unwinding roller (1201) by measurement, peeling off the PE film covering the upper surface of the resin layer and winding it up by the resin film PE film winding roller (1202), then adjusting the frame to move left and right to align the center line of the resin layer with the center line of the yarn row, so that the resin layer (b) of the resin film covers the width of the yarn row, and feeding the resin layer with release paper attached to the upper side together with the yarn row (201) into the pressing unit (6), while positioning the "U"-shaped correction sensors (1601) set on both sides of the resin film according to the measured data by the ruler. When the system is running, when the correction sensor (1601) senses that the film release roller (1101) deviates from the left or right, that is, when the center line of the film layer deviates, or when the resin film release roller (1201) deviates from the left or right, that is, when the center line of the resin layer deviates, the control electric cylinder drives the frame (1102) (1204) to move horizontally left and right along the guide rail to correct the deviation.

10. The operating system according to claim 5 or 7, characterized in that, The adjustment of the yarn packing density and the adjustment of the yarn packing width based on the center line of the yarn packing are as follows: Step 1: Adjust the yarn feeding device (3) according to the technical requirements of the prepreg so that the fiber yarn (2) released by the yarn feeding unit (1) is fed through the yarn feeding device to form a yarn pack (201) that meets the width and surface density requirements of the finished dipped yarn (202). At the same time, leave adjustment margin for the middle section of the comb steel needle mounting plate and the corner needle plate sections on both sides of the mounting plate of the yarn feeding device. Step 2: Obtain the thickness data of each section of the PVC-impregnated yarn. When a deviation occurs in the middle section of the PVC-impregnated yarn fabric, if a yarn arrangement device that adjusts the yarn density by rotating around the yarn centerline is used, the rotating shaft is driven to rotate, causing the mounting plate to rotate and adjusting the yarn density of the yarn, thereby achieving adjustment of the yarn density in the middle section of the PVC-impregnated yarn fabric; if a yarn arrangement device that adjusts the yarn density by extending and contracting to both sides around the yarn centerline is used, the telescopic drive rod is driven to rotate, causing the two sets of mounting plates to expand and contract at equal distances, thereby adjusting the yarn density of the yarn, thereby achieving adjustment of the yarn density in the middle section of the PVC-impregnated yarn fabric; When deviations occur on both sides of the dipped yarn fabric, rotate the corner pin plates on both sides of the mounting plate to adjust the yarn density on both sides of the dipped yarn fabric. Step 3: Obtain the width data of the dipped yarn; when there is a deviation in the width of the dipped yarn, the width of the dipped yarn can be adjusted by reducing or increasing the yarn at the end of the corner needle plate.

Images