Prepreg line feeding operation system and convenient driving operation method

Abstract

The invention discloses a prepreg line feeding operation system and a convenient driving operation method, the system comprises a hot-pressing roller pair at the prepreg input end of a prepreg production line, a yarn arrangement device and a yarn releasing frame, graduated scales are respectively arranged on an air expansion shaft and a deviation rectifying transverse shaft, and a yarn buffer frame is arranged between the yarn arrangement device and the yarn releasing frame. During feeding, yarn is drawn out of the yarn releasing frame, penetrates through the yarn guiding column and is pasted to a transverse rod of the yarn leading reed through an adhesive tape, and the yarn leading reed is held by hand to pass through the yarn buffering frame and the yarn arranging device to reach the hot-pressing double rollers. The method sequentially comprises the following steps: a step of quickly calibrating and aligning adhesive films by an upper adhesive film unreeling inflatable shaft and a lower adhesive film unreeling inflatable shaft, a step of spreading the adhesive films and a step of quickly dragging yarns released by a yarn releasing frame, and through the method, feeding is very easy to operate, and'accident 'waste and a large amount of adjustment time are avoided. Original two-person operation can be reduced to only one-person operation. The original operation of 3-4 persons is reduced to the operation of 2 persons.

Description

Technical Field

[0001] The present invention relates to a prepreg loading operation system and a convenient operation method for starting up the machine. Background Art

[0002] The production of prepreg is to transfer the resin of the upper and lower film adhesives to the fiber web, which requires strict alignment of the adhesive surfaces of the upper film adhesive, the lower film adhesive, and the fiber web (sandwich structure). In the actual operation of loading, it often takes a lot of time to align the three layers of materials, and often defective products are caused due to the misalignment of the "sandwich materials".

[0003] Secondly, when threading the film adhesive, if not careful, it will contaminate the guide roller or the yarn spreading roller, and the work of threading the reed is large, time-consuming and laborious. A large number of operators are required to cooperate.

[0004] Before formal production, it is also necessary to inspect and adjust the fiber surface density and product width of the prepreg to meet the standards. These adjustments take a lot of time, and a convenient method needs to be created. Summary of the Invention

[0005] Aiming at the above problems, the purpose of the present invention is to provide a prepreg loading operation system and a convenient operation method for starting up the machine.

[0006] In order to achieve the above purpose, the solution of the present invention is: A prepreg loading operation system includes hot pressing counter-rollers at the prepreg input end of the prepreg production line, a yarn arranging device, a yarn storage rack, and upper and lower PE film unwinding air shafts and supporting upper and lower PE film winding shafts. The upper and lower air shafts are respectively arranged on a unwind rack that can move left and right. The yarn arranging device includes comb steel needles and a rotatable and adjustable mounting plate. The comb steel needles are arranged at intervals and fixed on the mounting plate. Deviation correction devices are respectively arranged between the upper and lower air shafts and the hot pressing counter-rollers. The deviation correction devices are adjustably fixed on the deviation correction cross shaft of the production line frame. The operation is to draw the yarn from the yarn storage rack, arrange the yarn through the yarn arranging device, and then stack the film adhesives respectively released from the upper and lower air shafts on the upper and lower sides of the yarn and put them through the hot pressing counter-rollers. Among them, scale rulers are respectively arranged on the air shafts and the deviation correction cross shaft. The center points of the scale rulers on the air shafts and the center points of the scale rulers on the deviation correction cross shaft are on the same central connection line as the center point of the hot pressing counter-rollers. A yarn buffer rack is arranged between the yarn arranging device and the yarn storage rack. The system also includes a yarn threading reed. The yarn threading reed includes a cross bar, and a row of yarn guide columns are arranged at intervals on the cross bar. When loading materials: draw the yarn from the yarn storage rack, pass it through the yarn guide columns, and paste it on the cross bar of the yarn threading reed with tape, and hold the yarn threading reed through the yarn buffer rack, the yarn arranging device to the hot pressing counter-rollers.

[0007] The solution further is: The yarn buffer rack includes a yarn pressing roller, two side guide rollers and a cylinder in the middle of the buffer rack frame. The two side guide rollers are arranged parallel to the yarn pressing roller. The yarn bypasses the upper ends of the two side guide rollers and the lower end of the yarn pressing roller to hold the yarn pressing roller. Both ends of the yarn pressing roller are respectively connected to the telescopic arms of the cylinder. The yarn pressing roller is controlled by the cylinder to move up and down between the two side guide rollers. During operation, the yarn pressing roller moves downward to store a certain length of the passing yarn, and the passing yarn is maintained at a set tension by the cylinder pressure.

[0008] The solution further is: A plurality of yarn spreading rollers are arranged in parallel between the hot pressing pair rollers and the yarn discharging device, and a yarn guiding roller is arranged between the yarn discharging device and the yarn buffer rack.

[0009] The solution further is: The yarn discharging device is a yarn discharging device that rotates left and right around the center line to adjust the yarn discharging density, including comb steel needles, a mounting plate and a mounting base placed on the rack of the prepreg production line. The comb steel needles are arranged at intervals and fixed on the mounting plate. The mounting plate is rotatably fixed on the mounting base through a rotating shaft and a flange bearing seat. The rotating shaft is arranged at the center position of the length of the mounting plate and coincides with the center line. Rotatable corner needle plates are respectively arranged at both ends of the mounting plate through corner brackets, and comb steel needles connected to the mounting plate are arranged on the corner needle plates.

[0010] The solution further is: The number of yarn guiding columns of the yarn guiding reed is the same as the number of comb steel needles of the yarn discharging device, and the interval between the yarn guiding columns is the same as the interval between the comb steel needles of the yarn discharging device.

[0011] The solution further is: On both sides of the center points of the air shaft and the deviation rectifying cross shaft as the starting "0" point scale of the scale ruler, scale rulers are respectively pasted outwards. The starting display scale value of the scale ruler is less than the nominal width value of the adhesive film. Subsequently, the scale is divided at millimeter intervals, and at the same time, the values obtained by multiplying the millimeter intervals by 2 are sequentially marked. In the state where the center of the adhesive film width coincides with the center line, it is used to visually indicate the passing adhesive film width value.

[0012] A convenient operation method for starting up the prepreg feeding. The method is a convenient operation method for starting up based on the prepreg feeding system. First: Prepare a PE adhesive film roll wound on an air shaft. The adhesive film is pasted on the PE film. The unwind rack is placed at the middle origin position that can move left and right. The hot pressing pair rollers are in an open and non-pressing state. Among them, the method sequence includes: the steps of quickly calibrating and aligning the upper and lower adhesive film unwind air shafts, the step of unwinding the adhesive film, and the step of quickly dragging the yarn by the yarn rack. Among them: The steps of quickly calibrating and aligning the upper and lower adhesive film unwind air shafts include: Step 1: Determine the width of the PE film and the width of the adhesive film. Measure the distance between the edge of the adhesive film side of the prepared PE adhesive film roll and the same edge of the PE film, calculate and record the deviation distance between the center of the adhesive film width and the center of the PE adhesive film width, and transfer the air shaft with the PE adhesive film roll to the unwinding rack of the PE adhesive film roll at the front end of the prepreg production line. Step 2: Adjust the deviation rectifying device according to the width of the PE film and the deviation distance between the center of the adhesive film width and the center of the PE adhesive film width, so that the center of the adhesive film on the passing PE film is on the central connection line of the center point of the scale ruler of the air shaft, the center point of the scale ruler of the deviation rectifying cross shaft and the center point of the hot pressing counter roll; adjust the position of the adhesive film unwinding on the air shaft so that the center of the adhesive film on the air shaft is at the starting "0" point scale of the center scale ruler of the air shaft. The step of unwinding the adhesive film includes: Step 1: Directly pass the PE adhesive film unwound from the upper and lower PE adhesive film unwinding air shafts around the middle guide roller and through the middle of the hot pressing counter roll. Step 2: Pull the release paper from the release paper winding roller at the rear end of the prepreg production line, paste the adhesive film on the PE adhesive film passing through the middle of the hot pressing counter roll on the release paper with tape, and disconnect the PE film on the PE adhesive film in front of the hot pressing counter roll. Step 3: Rotate the release paper winding roller and the upper and lower air shafts, wind the disconnected PE film onto the matching PE film winding roller, and the release paper surfaces of the upper and lower adhesive films are respectively attached to the opened hot pressing counter roll. The step of quickly dragging the yarn release from the yarn release rack includes: Step 1: Place the yarn guide reed on a workbench, sequentially draw out the stranded yarn from the yarn release rack, pass it through the guide yarn columns of the yarn guide reed and hang down, and then paste the yarn on the cross bar of the yarn guide reed with tape. Step 2: Hold the yarn guide reed and pass through the yarn buffer rack and the yarn arranging device in sequence, and then pass through the middle of the upper and lower adhesive films of the hot pressing counter roll. Remove the yarn guide reed and paste the yarn on the lower adhesive film. Step 3: Close the hot pressing counter roll to be in a closed state and press the yarn between the upper and lower adhesive films.

[0013] The solution is further: The yarn buffer rack includes a middle yarn pressing roller, two side guide rollers and a cylinder. The two side guide rollers are arranged parallel to the yarn pressing roller. The two ends of the yarn pressing roller are respectively connected to the telescopic arms of the cylinder, and the yarn pressing roller is controlled by the cylinder to move up and down between the two side guide rollers; in the second step of the step of quickly dragging the yarn release from the yarn release rack, the process of passing through the yarn buffer rack: the yarn is bypassed from the upper ends of the two side guide rollers and the lower end of the yarn pressing roller to hold the yarn pressing roller, and then the yarn pressing roller is moved downward to store a certain length of the passing yarn, and the passing yarn is kept under a set tension by the cylinder pressure.

[0014] The further solution is that the yarn guiding reed can be detachably placed on the yarn buffer rack. The number of yarn guiding columns of the yarn guiding reed is the same as the number of comb steel needles of the yarn arranging device, and the intervals between the yarn guiding columns are the same as the intervals between the comb steel needles of the yarn arranging device. The process of the second step of holding the yarn guiding reed and passing through the yarn arranging device in sequence is to insert the yarn passing through the yarn guiding columns of the yarn guiding reed into the corresponding comb steel needles.

[0015] The further solution is that the yarn arranging device is a yarn arranging device that rotates left and right around the center connection line to adjust the yarn arranging density, including comb steel needles, a mounting plate, and a mounting base placed on the rack of the prepreg production line. The comb steel needles are arranged at intervals and fixed on the mounting plate. The mounting plate is rotatably fixed on the mounting base through a rotating shaft and a flange bearing seat. The rotating shaft is arranged at the center position of the length of the mounting plate and coincides with the center connection line. Rotating angle needle plates are respectively arranged at both ends of the mounting plate through rotatable angle brackets, and comb steel needles connected to the mounting plate are arranged on the rotating angle needle plates. After completing the steps of quickly calibrating the alignment of the upper and lower film unwinding air shafts, unwinding the film, and quickly dragging the yarn from the yarn rack, the method further includes: starting the prepreg production line, detecting the uniform density of the yarns in the yarn row with the film width after being pressed by the hot pressing pair rollers, and rotating and adjusting the mounting plate or the rotating angle needle plate according to the detection results, or increasing or decreasing the number of plies of the yarns, so that the uniform density of the yarns meets the requirements.

[0016] The beneficial effects of the present invention are: 1) Loading: It is very easy to operate, can fully ensure that the upper and lower films are always centered and aligned with the fiber web. There will be no "accidental" waste and a large amount of adjustment time will not be spent. The operation can be reduced from the original 2 operators to only 1 operator.

[0017] 2) Threading: It includes fiber threading and upper and lower film threading. It is convenient and fast to thread the yarn, and does not pollute the guide rollers for threading the film. The operation can be reduced from the original 3 - 4 operators to 2 operators.

[0018] 3) Prepreg areal density regulation operation and product width control: It is very convenient to adjust the areal density of the prepreg, including the areal density on both sides, and ensure the width of the prepreg product. And, an automatic adjustment system can be selected and configured: a) The degree of automation can be improved: After checking the width of the prepreg product, the fiber content and product width of the prepreg can be automatically adjusted, including finely adjusting the fiber content at both edges of the product, reducing cumbersome manual adjustment; b) The product quality has good stability: It can avoid the situation that only "experienced operators" can handle it, and make the adjustment work become simple.

[0019] c) Unified base standard: For the entire system, the "base" identification method for the discharge of raw materials at each part is uniformly defined. With numerous pay-off and take-up reels, quality problems will not occur due to misalignment.

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the system of the present invention; Figure 2 is a schematic structural diagram of the yarn buffer rack of the present invention; Figure 3 is a schematic structural diagram of the yarn guiding reed of the present invention Figure 4 is a schematic diagram of the initial display scale values on the air shaft and the deviation rectifying cross shaft of the present invention; Figure 5 is a schematic diagram of the air shaft wound with PE film of the present invention; Figure 6 is a schematic structural diagram of the relationship between the deviation rectifying device and the deviation rectifying cross shaft of the present invention; Figure 7 is a schematic structural diagram of the yarn arranging device of the present invention; Figure 8 is a top view schematic diagram of the structure of the yarn arranging device of the present invention; Figure 9 is a schematic diagram of the driving structure of the speed reducer of the yarn arranging device, Figure 7 an enlarged view of part A; Figure 10 is a schematic diagram of the structure of the corner needle plate of the yarn arranging device, Figure 7 an enlarged view of part B. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Embodiment 1: A pre-impregnation feeding operating system, as Figures 1 to 10 shown, the system includes hot pressing counter-rollers 2 at the pre-impregnation input end of the front end of the pre-impregnation material production line 1, a yarn arranging device 3, a yarn releasing rack 4, an upper PE film pay-off air shaft 5, a lower PE film pay-off air shaft 6, and supporting upper PE film take-up reel 7 and lower PE film take-up reel 8. The upper and lower air shafts 5 and 6 are respectively arranged on pay-off racks 9 and 10 that can move left and right. The yarn arranging device 3 includes comb steel needles 301 and a rotatable and adjustable mounting plate 302. The comb steel needles 301 are arranged at intervals and fixed on the mounting plate 302. Deviation rectifying devices 11 and 12 are respectively arranged between the upper and lower air shafts 5 and 6 and the hot pressing counter-rollers 2, as shown in Figure 6, the deviation rectifying devices 11 and 12 are adjustably fixed on the deviation rectifying cross shafts (rods) 14 and 15 of the production line frame through adjustable sliding blocks 13; the operation is to draw the yarn 16 from the yarn reel 4, after the yarn is arranged by the yarn arranging device 3, and stack the epoxy resin adhesive films 17 and 18 respectively released from the upper and lower air shafts 5 and 6 on the upper and lower sides of the yarn and then put them through the hot pressing pair of rollers 2. The adhesive film is a thin film with epoxy resin adhered to the release paper. Among them, as shown in Figure 4 , 5 , 6, scale rulers are respectively arranged on the air shaft and the deviation rectifying cross shaft. The center points of the scale rulers of the air shaft and the deviation rectifying cross shaft are on the same central connection line 19 as the center point of the hot pressing pair of rollers. A yarn buffer rack 20 is arranged between the yarn arranging device 3 and the yarn reel 4. The system also includes a yarn guiding reed 21, and the yarn guiding reed 21 can be manually placed on the yarn buffer rack 20. The yarn guiding reed includes a cross bar 2101, and a row of yarn guiding columns 2102 are arranged at intervals on the cross bar. During feeding: draw the yarn 16 from the yarn reel 4, pass it through the yarn guiding columns 2102, and paste it on the cross bar 2101 of the yarn guiding reed with tape, and hold the yarn guiding reed 21 through the yarn buffer rack 20, the yarn arranging device 3 to the hot pressing pair of rollers 2.

[0023] As Figure 2 shown, the yarn buffer rack 20 includes a yarn pressing roller 2002, two side guide rollers 2003 and a cylinder 2004 in the middle of the buffer rack frame 2001. The two side guide rollers are arranged parallel to the yarn pressing roller in the frame 2001, and the cylinder 2004 is arranged at the top of the frame 2001. As Figure 1 shown, the yarn 16 bypasses from the upper ends of the two side guide rollers 2003 and the lower end of the yarn pressing roller 2002 to hold the yarn pressing roller 2002. Both ends of the yarn pressing roller 2002 are respectively connected to the telescopic arms of the cylinder 2004, and the up and down movement of the yarn pressing roller 2002 between the two side guide rollers 2003 is controlled by the cylinder 2004. During operation, the yarn pressing roller 2002 moves downward to store a certain length of the passing yarn, and by setting the air pressure of the cylinder 2004, the passing yarn is kept under a set tension.

[0024] Among them, as Figure 1 shown, a plurality of yarn spreading rollers 22 are arranged in parallel between the hot pressing pair of rollers 2 and the yarn arranging device 3, and a yarn guide roller 23 is arranged between the yarn arranging device 3 and the yarn buffer rack 20.

[0025] Among them: As Figure 7 , 8As shown in Figures 9 and 10, the yarn arranging device is a yarn arranging device that rotates around the central connection line 19 to adjust the yarn arranging density. It includes comb steel needles 301, a mounting plate 302, and a mounting base 303 placed on the frame. The comb steel needles 301 are arranged at intervals and fixed on the mounting plate 302, and the yarn passes through between the comb steel needles 301. The mounting plate 302 is rotatably fixed on the mounting base 303 through a rotating shaft 304 and a flange bearing seat 305. The rotating shaft 304 is arranged at the center of the length of the mounting plate 302 and coincides with the central connection line 19. A speed reducer 307 driven by a motor 306 is connected and arranged on the mounting base 303. The output shaft 307-1 of the speed reducer 307 is connected to the rotating shaft 304 through a back gear 307-2 to drive the mounting plate 302 to rotate. The rotation of the rotating shaft drives the mounting plate to rotate, forming the adjustment of the yarn arranging width based on the central connection line. Rotatable corner needle plates 309 are respectively arranged at both ends of the mounting plate 302 through corner brackets 308. Comb steel needles 301 connected to the mounting plate 302 are arranged on the corner needle plates 309. The comb steel needles 301 at one end of the corner needle plate 309 are inserted into the mounting plate 302 as the corner rotation shaft fulcrum of the corner needle plate 309. Support seats 3012 are respectively arranged on the mounting base 303 on both sides of the flange bearing seat 305. A limit fixing member 3012-1 is arranged on the support seat 3012. An arc groove 3012-2 is arranged on the upper end surface of the limit fixing member 3012-1. A limit sliding rod 302-1 corresponding to the arc groove 3012-2 is arranged on the mounting plate 302. The limit sliding rod 302-1 is inserted into the arc groove 3012-2 to realize the limit of the rotation of the mounting plate 302. The rotation of the mounting plate 302 is used to adjust the density of the prepreg. The rotation of the corner needle plate 309 is used to adjust the yarn density on both sides of the width of the prepreg. Among them: the length of the corner needle plate 309 is 2%-5% of the length of the comb steel needle mounting plate 302; according to the detection of the yarn arranging width by the prepreg production line 1, it can be rotated manually or by the motor 306 to adjust the yarn arrangement, the density and width of the prepreg around the central connection line. For the limit rotation of the corner needle plate 309: the corner brackets 308 are respectively arranged at both ends of the rotating base plate 3010. The corner brackets 308 include sliding support plates 308-1. The sliding support plates 308-1 support the corner needle plates 309. The corner needle plates 309 are connected with rotating connection pieces 3011. The rotating connection pieces 3011 are placed on the sliding support plates 308-1 and slide. An arc groove 308-1-1 is arranged on the sliding support plate 308-1. A limit sliding pin 3011-1 is arranged on the rotating connection piece. The limit sliding pin 3011-1 is inserted into the arc groove 308-1-1 to form the limit of the rotation of the corner needle plate 309.

[0026] Wherein: the number of yarn guiding columns 2102 of the yarn guiding reed 21 is the same as the number of comb steel needles 301 of the yarn arranging device 3, and the intervals between the yarn guiding columns 2102 are the same as the intervals between the comb steel needles 301 of the yarn arranging device 3.

[0027] As Figure 5 , 6 and Figure 4 shown, on both sides of the center points of the air shaft 5, 6 and the deviation correction cross shaft 14, 15 as the starting "0" point scale of the scale ruler, scale rulers are respectively pasted outwards. Since the scales in the middle are not visible and only the scales on the outside are useful for reading the scale ruler, only the useful scale ruler readings need to be displayed. Moreover, the nominal width value of the adhesive film can be directly read from one side. Therefore, the starting display scale value of the scale ruler is less than the nominal width value of the adhesive film (for example, 1000 mm), and then the scales are divided at millimeter intervals and are simultaneously marked in the order of the values obtained by multiplying the millimeter intervals by 2. In the state where the center line of the adhesive film width coincides with the center line, the width value of the passing adhesive film can be intuitively indicated from one side.

[0028] Embodiment 2: A convenient operation method for starting up the feeding of the prepreg line. The method is based on the convenient operation method for starting up the prepreg line feeding system described in Embodiment 1. First: as Figure 5 shown, prepare the PE adhesive film roll D wound by the air shaft 5. The adhesive film a is attached to the PE film b. Figure 1 shown, the unwinding racks 9, 10 are placed at the middle origin position that can move left and right, and the hot pressing pair rollers 2 are in an open and non-pressing state. Among them, the method sequentially includes: the steps of quickly calibrating and aligning the upper and lower adhesive film unwinding air shafts with the adhesive film, unwinding the adhesive film, and quickly dragging the yarn by the yarn rack. Among them: The steps of quickly calibrating and aligning the upper and lower adhesive film unwinding air shafts with the adhesive film include: The first step: Determine the width of the PE film b and the width of the adhesive film a. Since the adhesive film a and the PE film b are not concentric and there will be deviations during the process of being attached and wound into a roll, it is necessary to measure the distance c between the same edge of the adhesive film a on one side of the PE adhesive film roll D and the same edge of the PE film b, calculate the distance by which the center of the adhesive film width deviates from the center of the PE adhesive film width, and record it. Then transfer the air shaft with the PE adhesive film roll to the unwinding rack of the PE adhesive film at the front end of the prepreg production line. The second step: Adjust the deviation correction device according to the width of the PE film and the distance by which the center of the adhesive film width deviates from the center of the PE adhesive film width, so that the center of the adhesive film on the passing PE film is on the center line connecting the center point of the scale ruler of the air shaft, the center point of the scale ruler of the deviation correction cross shaft, and the center point of the hot pressing pair rollers; Loosen the air shaft, adjust the position of the adhesive film unwinding on the air shaft, so that the center of the adhesive film on the air shaft is at the starting "0" point scale of the center scale ruler of the air shaft, and then tighten the air shaft. The steps of unwinding the adhesive film include: First step: Directly pass the PE films unwound from the upper and lower PE film unwinding air shafts around the middle guide roller and through the middle of the hot pressing pair of rollers. Second step: As Figure 1 shown, pull the release paper 101 from the release paper winding roller at the rear end of the prepreg production line, paste the film a on the PE film passing through the middle of the hot pressing pair of rollers onto the release paper with tape, and disconnect the PE film b on the PE film in front of the hot pressing pair of rollers. The film is a thin film with epoxy resin adhered to the release paper. Third step: Rotate the release paper winding roller and the upper and lower air shafts, wind the disconnected PE film onto the matching PE film winding roller, and attach the release paper surfaces of the upper and lower films to the opened hot pressing pair of rollers 2 respectively. The steps of quickly dragging the yarn by the yarn rack include: First step: Place the yarn guiding reed on a workbench (directly on the upper yarn buffer rack included in the buffer rack frame 2001), sequentially draw out the stranded yarn 16 from the yarn rack 4, pass it through the yarn guiding columns 2102 of the yarn guiding reed 21 and let it droop, and then paste the yarn on the cross bar 2101 of the yarn guiding reed 21 with tape. Second step: Hold the yarn guiding reed 21 and sequentially pass through the yarn buffer rack 20 and the yarn arranging device 3, then pass through the middle of the upper and lower films of the hot pressing pair of rollers 2, remove the yarn guiding reed 21 and paste the yarn on the lower film. Third step: Close the hot pressing pair of rollers 2 to be in a closed and pressed state to press the yarn 16 between the upper and lower films.

[0029] Among them: The yarn buffer rack includes a middle yarn pressing roller, two side guide rollers and a cylinder. The two side guide rollers are arranged parallel to the yarn pressing roller. The two ends of the yarn pressing roller are respectively connected to the telescopic arms of the cylinder, and the yarn pressing roller is controlled by the cylinder to move up and down between the two side guide rollers. In the second step of the steps of quickly dragging the yarn by the yarn rack, the process of passing through the yarn buffer rack: The yarn is bypassed from the upper ends of the two side guide rollers and the lower end of the yarn pressing roller to hold the yarn pressing roller, and then the yarn pressing roller is moved downward to store a certain length of the passing yarn, and the passing yarn is kept under a set tension by the cylinder pressure.

[0030] Among them: The yarn guiding reed can be detachably placed on the yarn buffer rack. The number of yarn guiding columns of the yarn guiding reed is the same as the number of comb steel needles of the yarn arranging device, and the interval between the yarn guiding columns is the same as the interval between the comb steel needles of the yarn arranging device. In the second step of holding the yarn guiding reed and sequentially passing through the yarn arranging device, the process: The yarn passing through the yarn guiding columns of the yarn guiding reed is inserted through the corresponding comb steel needles.

[0031] Among them: The yarn arranging device is a yarn arranging device that rotates left and right around the center line to adjust the yarn arranging density, including comb steel needles, a mounting plate, and a mounting base placed on the frame of the prepreg production line. The comb steel needles are arranged at intervals and fixed on the mounting plate. The mounting plate is rotatably fixed on the mounting base through a rotating shaft and a flange bearing seat. The rotating shaft is arranged at the center position of the length of the mounting plate and coincides with the center line. Angle needle plates are respectively arranged at both ends of the mounting plate through rotatable angle brackets. The comb steel needles connected to the mounting plate are arranged on the angle needle plates. After completing the steps of quickly calibrating the inflation shafts of the upper and lower film unwinding to align the film, unwinding the film, and quickly dragging the yarn by the yarn reel, the method further includes: starting the prepreg production line, detecting the uniform density of the yarns in the yarn row with the film width after being pressed by the hot pressing pair rollers, and rotating and adjusting the mounting plate or the angle needle plate according to the detection results, or increasing or decreasing the number of plies of the yarns, so that the uniform density of the yarns meets the requirements.

[0032] The above-mentioned embodiments of the prepreg feeding operating system and the convenient driving operation method can achieve feeding: very easy to operate, and can fully ensure that the upper and lower films are always centered and aligned with the fiber web. There will be no "accidental" waste and a large amount of adjustment time will not be spent. The operation can be reduced from the original two-person operation to only one-person operation.

[0033] Threading: including fiber threading and upper and lower film threading. It is convenient and fast to thread the yarn, and does not contaminate the guide rollers for threading the film. The operation can be reduced from the original three to four people to two people.

[0034] Prepreg areal density regulation operation and product width control: It is very convenient to adjust the areal density of the prepreg, including the areal density on both sides, and ensure the width of the prepreg product. Moreover, an automatic adjustment system can be selected and configured.

Claims

1. A prepreg line material feeding operation system, comprising a hot pressing pair of rollers (2) at a prepreg input end of a prepreg production line (1), a yarn discharging device (3), a yarn discharging frame (4), and upper and lower PE film discharging air shafts (5, 6) and matching upper and lower PE film winding shafts (7, 8), wherein the upper and lower air shafts (5, 6) are respectively arranged on an unwinding frame (9, 10) that can be moved left and right, the yarn discharging device (3) comprises comb steel needles (301) and a rotatable and adjustable mounting plate (302), the comb steel needles (301) are arranged at intervals The yarn (16) is fixed on the mounting plate (302), and the upper and lower air shafts (5, 6) are respectively provided with deviation correction devices (11, 12), and the deviation correction devices (11, 12) are adjustably fixed on the deviation correction transverse axis (14, 15) of the production line frame. The operation is to draw the yarn (16) from the yarn release frame (4), discharge the yarn through the yarn discharge device (3), and then overlap the rubber film (17, 18) released by the upper and lower air shafts (5, 6) on the yarn and put it through the hot pressure roller (2), characterized in that: Scale scales are provided on the pneumatic shafts (5, 6) and the deflection correction transverse axis (14, 15), respectively. The center points of the pneumatic shaft scale scales and the deflection correction transverse axis scale scales are on the same center line (19) as the center point of the hot pressing roller pair. A yarn buffer frame (20) is provided between the yarn arrangement device (3) and the yarn delivery frame (4). The system further comprises a yarn drawing reed (21), the yarn drawing reed (21) comprising a cross bar (2101), and a row of yarn guide posts (2102) are arranged on the cross bar (2101) at intervals. When loading, the yarn (16) is drawn out from the yarn delivery frame (4), passes through the yarn guide posts (2102), and is adhered to the cross bar (2101) of the yarn drawing reed with tape. The yarn drawing reed (21) is hand-held and passed through the yarn buffer frame (20) and the yarn arrangement device (3) to the hot pressing roller pair (2).

2. The prepreg wire material handling system according to claim 1, characterized in that: The yarn buffer frame (20) comprises a yarn pressing roller (2002), guide rollers (2003) on both sides and a cylinder (2004) in the middle of the buffer frame frame (2001); the guide rollers (2003) on both sides are arranged parallel to the yarn pressing roller (2002); the yarn (16) passes around the yarn pressing roller (2002) from the upper ends of the guide rollers (2003) on both sides and the lower ends of the yarn pressing roller (2002); the two ends of the yarn pressing roller (2002) are respectively connected to the telescopic arms of the cylinder (2004); the yarn pressing roller (2002) is controlled by the cylinder (2004) to move up and down between the guide rollers (2003) on both sides; when working, the yarn pressing roller (2002) moves downward to store a certain length of yarn that has passed through, and the pressure of the cylinder (2004) is used to maintain the passing yarn with a set tension.

3. The prepreg wire material handling system according to claim 1, characterized in that: A plurality of yarn spreading rollers (22) are arranged in parallel between the heat-pressing roller pair (2) and the yarn discharging device (3), and a yarn guide roller (23) is arranged between the yarn discharging device (3) and the yarn buffer frame (20).

4. The prepreg wire material handling system according to claim 1, characterized in that: The yarn arrangement device (3) is a yarn arrangement device that rotates left and right around a center line (19) to adjust the yarn arrangement density, and comprises comb steel needles (301), a mounting plate (302) and a mounting base (303) placed on a prepreg production line frame, wherein the comb steel needles (301) are arranged at intervals and fixed on the mounting plate (302), and the mounting plate (302) is rotatably fixed on the mounting base (303) via a rotating shaft (304) and a flange bearing seat (305), and the rotating shaft (304) is arranged at the center position of the length of the mounting plate (302) and coincides with the center line (19), and rotatable corner needle plates (309) are respectively arranged at both side ends of the mounting plate (302) via corner brackets (308), and comb steel needles (301) connected to the mounting plate (302) are arranged on the corner needle plates (309).

5. The prepreg wire material handling system according to claim 1, characterized in that: The number of the yarn guide posts (2102) of the yarn drawing reed (21) is consistent with the number of the comb steel needles (301) of the yarn arrangement device (3), and the intervals between the yarn guide posts (2102) are consistent with the intervals between the comb steel needles (301) of the yarn arrangement device (3).

6. The prepreg wire material handling system according to claim 1, characterized in that: Scale rulers are pasted outwards on both sides of the scale ruler's starting "0" point scale, with the center points of the inflation axis (5, 6) and the deviation correction horizontal axis (14, 15) as the center points. The scale ruler's initial display scale value is smaller than the nominal width value of the film, and then the scale is divided into millimeter intervals, and the millimeter intervals are multiplied by 2. When the film width center coincides with the center connection line (19), the film width value that has passed is visually indicated.

7. A convenient operation method for starting up a prepreg line material, the method is based on the convenient operation method for starting up a prepreg line material system according to claim 1, first: prepare a PE film roll rolled up by an inflatable shaft, the film is applied to the PE film, the unwinding frame is placed at the middle origin position of the left and right movement, and the hot pressing rollers are in an open non-pressing state, characterized in that: The method sequentially comprises: a step of quickly calibrating the upper and lower film unwinding air shafts and aligning the films, a step of spreading the films, and a step of quickly dragging the yarn on the yarn rack, wherein: The steps of quickly calibrating the upper and lower film unwinding air shafts and aligning the films include: The first step is to determine the width of the PE film and the width of the adhesive film, measure the distance between the edge of one side of the prepared PE film roll and the same edge of the PE film, calculate and record the distance between the center of the film width and the center of the PE film width, and transfer the inflatable shaft with the PE film roll to the unwinding rack of the PE film roll at the front end of the prepreg production line; The second step is to adjust the correction device according to the width of the PE film and the distance between the center of the film width and the center of the PE film width, so that the center of the film on the passing PE film is on the center line connecting the center point of the air shaft scale ruler and the center point of the correction horizontal axis scale ruler and the center point of the hot pressing roller; adjust the position of the film unwinding on the air shaft so that the center of the film on the air shaft is on the starting "0" point scale of the air shaft center scale ruler; The step of spreading the adhesive film comprises: The first step is to unwind the upper and lower PE films. The PE film released by the air shaft directly bypasses the middle guide roller and passes through the middle of the hot pressing roller; The second step is to pull the release paper from the release paper winding roller at the rear end of the prepreg production line, stick the film on the PE film passing through the middle of the hot pressing roller to the release paper with tape, and cut off the PE film on the PE film at the front side of the hot pressing roller; The third step is to rotate the release paper winding roller and the upper and lower air shafts to wind the disconnected PE film onto the matching PE film winding roller, and the release paper surfaces of the upper and lower films are respectively attached to the opened hot pressing rollers; The yarn placing frame and the yarn placing and dragging step comprises: The first step is to place the yarn reed on a workbench, sequentially draw out the plied yarn from the yarn rack, pass it through the yarn guide column of the yarn reed and hang it down, and then use tape to stick the yarn to the crossbar of the yarn reed; The second step is to hold the yarn reed and pass it through the yarn buffer frame and the yarn arrangement device in sequence, and then pass it through the upper and lower rubber films between the hot pressing rollers, remove the yarn reed and stick the yarn on the lower rubber film; The third step is to bring the hot pressing rollers together in a closed pressure state to press the yarn between the upper and lower films.

8. The convenient operation method according to claim 7, characterized in that: The yarn buffer frame includes a middle yarn pressing roller, guide rollers on both sides and a cylinder. The guide rollers on both sides are arranged parallel to the yarn pressing roller. The two ends of the yarn pressing roller are respectively connected to the telescopic arms of the cylinder. The yarn pressing roller is controlled by the cylinder to move up and down between the guide rollers on both sides. In the yarn releasing frame yarn releasing and quick dragging step, the second step, the process of the warp yarn buffer frame, is to pass the yarn from the upper ends of the guide rollers on both sides and the lower end of the yarn pressing roller around the yarn pressing roller, and then move the yarn pressing roller downward to store a certain length of yarn that has passed, and keep the passing yarn with a set tension through the cylinder pressure.

9. The convenient operation method according to claim 7, characterized in that: The yarn drawing reed can be detachably mounted on a yarn buffer frame, the number of yarn guide posts of the yarn drawing reed is consistent with the number of comb steel needles of the yarn discharging device, and the intervals between the yarn guide posts are consistent with the intervals between the comb steel needles of the yarn discharging device. The second step is the process of holding the yarn drawing reed and sequentially passing through the yarn discharging device: the yarn passing through the yarn guide posts of the yarn drawing reed is inserted into the corresponding comb steel needles.

10. The convenient operation method according to claim 7, characterized in that: The yarn arrangement device is a yarn arrangement device that rotates left and right with the center line as the center to adjust the yarn arrangement density, including comb steel needles, a mounting plate and a mounting base placed on the prepreg production line frame, the comb steel needles are arranged at intervals and fixed on the mounting plate, the mounting plate is rotatably fixed on the mounting base through a rotating shaft and a flange bearing seat, the rotating shaft is set at the center position of the length of the mounting plate and coincides with the center line, the two side ends of the mounting plate are respectively provided with corner needle plates through rotatable corner brackets, and the corner needle plates are arranged with comb steel needles connected to the mounting plate; After completing the steps of quickly calibrating the upper and lower film unwinding air shafts to align the films, spreading the films, and quickly dragging the yarns on the yarn rack, the method further includes: starting the prepreg production line, detecting the uniform density of the yarns in the yarn row with the film width after being pressed by hot pressing rollers, and rotating and adjusting the mounting plate or the corner needle plate according to the detection results, or increasing or decreasing the number of yarn strands, so that the uniform density of the yarns meets the requirements.

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