JP2018145576A - Method for producing roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a roll capable of solving the aforementioned technical problem by applying a quite novel process in which a roll is divided in a width direction.SOLUTION: The method for producing a roll is characterized by including the following steps 1 to 3. Step 1: a sheet forming step in which a plurality of reinforcing fiber yarns are made into a fabric and are oriented in at least one direction to obtain a reinforcing fiber yarn sheet precursor (hereinafter referred to as original fabric). Step 2-1: a take-up step in which the original fabric is taken up to a shaft body to form a roll of the original fabric. Step 3: a slit step in which a blade is inserted in the roll of the original fabric roll to divide the roll in a width direction into a plurality of rolls.SELECTED DRAWING: None

Description

  The present invention is a method for manufacturing a scroll in which a reinforcing fiber sheet precursor (raw fabric) is wound around a shaft, and in the production of a plurality of scrolls from a raw fabric, it is divided directly in the width direction from the state of the original fabric scroll. The present invention relates to a method for manufacturing a scroll.

  Fiber reinforced plastic (FRP) composed of reinforced fibers and matrix resin is widely used in various industrial applications because of its excellent light weight and mechanical properties. As a form of the reinforcing fiber used for FRP, reinforcing fiber sheets such as woven and knitted fabrics in which the reinforcing fibers are arranged in the plane direction and are maintained are widely distributed because of their versatility.

  In many cases, the reinforcing fiber sheet is handled in the form of a roll in which a fixed length is continuously wound in the length direction because of transportation efficiency and ease of handling during use. The production method is basically a method of winding up a reinforcing fiber sheet produced by a loom or the like continuously from a production process using a winding device. A large number of reels are taken up after the fiber sheet is slit in the width direction with a cutter or the like.

  In this multi-rolling, a plurality of product rolls can be obtained in a single process, so that the processing cost can be reduced and the cost can be reduced. However, the low elongation of the reinforcing fiber sheet is bulky and unsatisfactory. Due to the homogeneous characteristics, it is difficult to control the tension and running position for each slit, and depending on the characteristics and winding amount of the reinforcing fiber sheet, there are quality problems that the roll may collapse or the physical properties may vary between rolls. there were. It is well known that for such problems, it is easy to control by winding on another winding shaft in units of slits, but the number of winding shafts increases in proportion to the number of slits in the original fabric, so the equipment cost Is expensive and the equipment specifications are limited, so it lacks versatility.

  In addition, in FRP, in addition to the excellent reinforcing effect of reinforcing fibers, there is an increasing demand for added value, and reinforcing fiber sheets are also intended for appearance inspection and functional addition in addition to conventional fabric making processes. The number of cases where post-processing is applied in an additional process is increasing. However, since a large number of product rolls need to be input individually, the processing cost increases due to the increase in the number of secondary processing steps.

  As described above, in taking a large number of rolls of reinforcing fiber sheets, it is a problem to achieve both consistent cost and quality that are assumed up to the secondary processing.

  As a manufacturing method of such a reinforcing fiber sheet roll, Patent Documents 1 and 2 disclose inventions relating to a method of winding a sheet with an individual winding shaft after slitting the sheet in the width direction. Patent Document 3 discloses an invention relating to a method of winding a divided sheet with a single winding shaft while controlling the position in the width direction with a separate plate.

JP 2005-219228 A JP-A-11-79501 JP-A-5-270703

  However, in the inventions described in Patent Documents 1 and 2, since it is premised that winding is performed by an individual winding shaft corresponding to the number of slits, in view of the above-described equipment cost and versatility, no problem is solved. It is not. On the other hand, in the invention described in Patent Document 3, since the winding of the sheet cannot be individually controlled, a problem in terms of quality remains.

  As described above, in the prior art, although consideration has been made to individually improve the quality and work man-hours within the framework of the existing process that is wound after slitting the raw material, the process itself is considered to be drastically changed. Has not reached. Therefore, the present invention is to provide a method for manufacturing a scroll that solves the above technical problem by applying a completely new process for dividing the scroll in the width direction.

  The present invention for solving the above-described problems is as follows.

  A method for producing a scroll, comprising the following steps 1 to 3.

  Step 1: A sheet forming step in which a plurality of reinforcing fiber yarns are made into a reinforcing fiber sheet precursor (hereinafter referred to as an original fabric) that is aligned in at least one direction.

  Step 2-1: A winding step in which the raw material is wound around a shaft body to obtain a raw material roll.

  Process 3: A slit process in which a blade is inserted into an original roll and divided in the width direction to form a plurality of scrolls.

  According to the method for manufacturing a scroll of the present invention, it is possible to manufacture a low-cost and high-quality scroll with simple facilities and processes that have not been conventionally available.

The schematic plan view which showed one embodiment of the reinforced fiber sheet precursor of this invention. The schematic plan view which showed another embodiment of the reinforcing fiber sheet precursor of this invention. Sectional drawing which showed an example of the assembly | attachment aspect of the shaft body in the process 2. FIG. Schematic which showed one Embodiment of the slit apparatus used at the process 3. FIG. Schematic which showed another embodiment of the slit apparatus used at the process 3. FIG. Schematic which showed another embodiment of the slit apparatus used at the process 3. FIG. Schematic of an example of the blade used at the process 3. FIG.

  The production method of the present invention is a method for producing a scroll in which a reinforcing fiber sheet is wound around a shaft, and a reinforcing fiber sheet precursor (fabricated from a plurality of reinforcing fiber yarns and aligned in at least one direction) Hereinafter, a sheet forming step (step 1), which is referred to as an original fabric), the original fabric is wound around a shaft body, a winding step (step 2-1) into an original fabric roll, a blade is inserted into the original fabric roll, The slit process (process 3) which is divided | segmented into the width direction and is set as several scrolls is comprised.

  Here, in the present invention, the reinforcing fiber sheet precursor (also referred to as a raw fabric) is a sheet having a width as it is in the state before being divided in the width direction in step 3. is there. On the other hand, the reinforcing fiber sheet refers to a sheet in a state after being divided into an arbitrary width in the step 3.

  In addition, the name of the scroll corresponds to the above, and the original roll means a roll-shaped roll obtained by winding the original roll around the shaft, and the roll means that the reinforcing fiber sheet is wound around the shaft. Means a roll-shaped body.

  Step 1 of the present invention is a sheet forming step in which a plurality of reinforcing fiber yarns are made into a reinforcing fiber sheet precursor (raw fabric) that is aligned in at least one direction.

  Examples of the types of reinforcing fiber yarns used in the raw fabric of the present invention include carbon fibers, glass fibers, and organic fibers such as aramid, paraphenylenebenzobisoxazole, polyvinyl alcohol, polyethylene, polyarylate, and polyimide. These can be used in combination of one or more of these. Among these, carbon fibers are particularly suitable as reinforcing fibers constituting the reinforcing fiber yarns because they are excellent in specific strength and specific elastic modulus. As the carbon fiber, polyacrylonitrile (PAN) -based carbon fiber, pitch-based carbon fiber, cellulose-based carbon fiber, and a reinforcing fiber yarn constituted by blending a plurality of these can be used.

  Moreover, it is preferable that the sizing agent is provided to the reinforcing fiber yarn from the viewpoint of handleability and higher processability. The adhesion amount of the sizing agent is preferably in the range of 0.2 to 2.5% by mass, more preferably 0.5 to 1.2% by mass with respect to 100% by mass of the reinforcing fiber yarn including the sizing agent. %. The composition of the sizing agent to be applied is not particularly limited. For example, a compound having a plurality of aliphatic type epoxy groups, an epoxy adduct of polyalkylene glycol, diglycidyl ether of bisphenol A, polyalkylene oxide addition of bisphenol A 1 type or multiple types, such as the thing which added the epoxy group to the product, the polyalkylene oxide addition product of bisphenol A, can be used together.

  The number of filaments of the reinforcing fiber yarn is preferably 500 to 100,000, more preferably 3,000 to 50,000. The yarn fineness is preferably 33 to 8,000 tex, more preferably 198 to 4,000 tex. In particular, a yarn having a large number of filaments and a large fineness is preferable because it can be obtained at a relatively low cost and the substrate can be manufactured at a low cost.

The basis weight of the raw reinforcing fibers, preferably from 100 to 1000 g / ^{m 2,} more preferably from 200 to 600 g / ^{m 2.} The larger the basis weight of the reinforcing fiber is, the longer the time required for the slit process of step 3 is. Therefore, the above range is preferable in view of workability. Here, the basis weight of the reinforcing fiber refers to a numerical value measured according to the mass per unit area of JIS R7602 (1995).

  In the raw fabric of the present invention, it is sufficient that the reinforcing fiber yarns are aligned in at least one direction, and the orientation direction (the aligned direction) is not particularly limited. A mode in which the directions are aligned in a direction is preferably used. For example, a mode in which the directions are aligned in one direction or two directions selected from 0 °, 90 °, + 45 °, and −45 ° is a general configuration. Examples of the form of the original fabric having the orientation include a woven fabric, a knitted fabric (including NCF: Non Crimp Fabric), a sheet, and the like, and can be appropriately selected depending on the application and required performance. Among them, as the reinforcing fiber sheet precursor (raw fabric), a process is provided by providing an ear tissue, which will be described later, when the reinforcing fiber is a unidirectional fabric or a bidirectional fabric arranged at 0 ° and / or 90 °. 3 is preferable because it is easy to divide the original roll in the width direction and is excellent in the quality of the obtained scroll.

  The means for realizing Step 1 of the present invention varies depending on the form of the original fabric, but any form can be used to fabricate using known means. For example, in the case of a woven fabric, a loom such as a shuttle loom, a rapier loom, a needle loom, a water jet loom, an air jet loom can be used. In the case of a knitted fabric, a knitting machine such as a Raschel machine or a tricot machine can be used. In the case of an NCF, a plurality of reinforcing fiber yarns are arranged in parallel and arranged in an arbitrary direction upstream of the knitting machine. It is possible to fabricate the creel unit and a dedicated facility including a conveyor unit that conveys the creel unit to the downstream side of the knitting machine.

  In the present invention, the reinforcing fiber sheet precursor (raw fabric) is a woven fabric in which reinforcing fiber yarns are aligned in at least one direction, and both end portions in the width direction of the woven fabric, as well as any inner portion in the width direction. It is preferable that the ear tissue is inserted at the position. The said aspect is demonstrated in detail with reference to drawings below.

  1 and 2 are schematic plan views showing one embodiment of the reinforcing fiber sheet precursor of the present invention.

  The reinforcing fiber sheet precursor 1 in FIG. 1 is composed of a warp yarn 2 made of reinforcing fiber yarns and an auxiliary yarn 3 for maintaining the shape of the warp yarns to form a unidirectional plain fabric (ground texture). Yes. In the reinforcing fiber sheet precursor 1, a total of four rows of ear tissue are inserted, one row (4 in the figure) at both ends in the width direction and two rows (6 in the figure) at the center between the ground tissues 5. The ear tissue 4 is arranged in parallel in the vicinity of the outermost warp yarn 7 of the left and right ground tissues, and a tuft ear 8 made of only the auxiliary yarn 3 is formed on the outer side thereof. Here, the ear tissue 4 is a row of entangled tissue in which two entangled yarns 9 are entangled with each other, and plays a role of restraining the warp yarn 7 from falling off the ground tissue. Note that one set of the ear tissue 4 and the tufted ear 8 is collectively referred to as an ear portion 10. On the other hand, the ear tissue 6 is arranged in parallel in the vicinity of the innermost warp thread 11 of the left and right ground tissues, and a section where only the auxiliary thread 3 exists is provided between the ear tissues 6. ing. The section corresponds to a cutting allowance when the raw roll is divided in step 3, and an ear can be formed inside the left and right reinforcing fiber sheets by cutting the center of the region.

  Further, the reinforcing fiber sheet precursor 12 of FIG. 2 forms a bi-directional plain woven fabric (ground texture) in which warp yarns 13 and weft yarns 14 made of reinforcing fiber yarns are interlaced with each other. As in FIG. 1, the reinforcing fiber sheet precursor 12 has two rows (15 in the figure) at both ends in the width direction, and two rows (16 in the drawing) in two places sandwiched between the ground tissues. Has been inserted. The ear tissue 15 is arranged in parallel with the outermost warp yarns 17 of the left and right ground tissues, and two warp auxiliary yarns 18 and weft yarns made of the same fiber yarn as the auxiliary yarns 3 used in FIG. Two rows of plain weave structures in which 14 are interlaced are formed, and on the outer side there are tufted ears 19 consisting only of weft threads 14, which form ears 20. The warp auxiliary yarn 18 is covered with a heat-sealing sealing yarn (not shown) for firmly fixing the ear tissue, and is heated and melted and bonded to the weft yarn. The same applies to the ear tissue 16, and the ear tissue 16 is arranged in parallel in the vicinity of the innermost of the left and right ground tissues and the outermost warp 21 of the central ground tissue, and is sandwiched between the ear tissues 16. A section where only the weft thread 14 exists is provided, and the section becomes an ear portion when divided into reinforcing fiber sheets as in FIG.

  According to the embodiment illustrated in FIGS. 1 and 2, since the position of the warp yarn is regulated by the ear tissue, in Step 3, by dividing the original fabric from the portion of the ear tissue in the width direction, the cutting portion Since the unraveling and fluffing of the reinforcing fibers is difficult to occur, the quality of the end face of the scroll is excellent, and since there is no warp, the cutting resistance is reduced and the workability is remarkably improved.

  It should be noted that the ear tissue is not limited to the illustrated embodiment, and may be inserted at an arbitrary position depending on the tissue to be applied, the number of rows, the division width of the raw roll, and the number of divisions. Should be selected.

  As the auxiliary yarn used for the ear tissue, the fineness is preferably 100 to 200 dtex because it does not essentially bear the reinforcing effect, and it is preferable to use a finer finer than the reinforcing fiber yarn. As a measure of the fineness, since the thickness locally increases in the ear tissue and the roll collapse may occur when it is used as a scroll, it is preferably 1/2 or less of the reinforcing fiber yarn.

  The fiber used for the auxiliary yarn is not particularly limited, such as glass fiber, aromatic polyamide fiber, polyvinyl alcohol fiber, polyester fiber, polyamide fiber, polyethylene fiber, polypropylene fiber, etc. Among them, glass fiber, aromatic polyamide Fibers and polyvinyl alcohol fibers are preferable because they have a small heat shrinkage ratio and good dimensional stability.

  In addition, the auxiliary thread may include a sealing thread for the purpose of further strengthening the restraint of the ear tissue. As such a sealing thread, it is preferable to use a heat-melting low-melting polymer. As the low melting point polymer, thermoplastic resins such as nylon, copolymer nylon, polyester, vinylidene chloride, vinyl chloride, and polypolyurethane can be used. Of these, copolymer nylon, for example, nylon 6, 66 and 610 copolymer nylon, nylon 6, 12, 66 and 610 copolymer nylon is preferable. The fineness of the sealing yarn is preferably 20 to 330 dtex. In addition, it is also possible for the sealing thread to form an ear tissue by itself.

  Step 2-1 of the present invention is a winding step in which the reinforcing fiber sheet precursor (original fabric) obtained in Step 1 is wound around a shaft body to obtain an original fabric roll.

  A known winding core can be used as the shaft body used in step 2-1 or step 2-2 described later, but a tubular body having a length equal to or greater than the width of the original fabric is preferable. Examples of the material of the shaft include paper, plastic, metal, and FRP. Among these, a paper tube made of a paper material is preferable because of cost and handling properties.

  Since the shaft used in the manufacturing method of the present invention is divided into the width direction after inserting the blade in step 3, it is handled as an individual scroll, and thus the shaft divided in advance is connected in the width direction for use. Good. As a means for connecting each shaft body in the width direction, a shaft core smaller than the inner diameter of the shaft body is passed through a plurality of shaft bodies arranged in the width direction, and sandwiched by flanges from the outside of the shaft bodies at both ends. Examples include a method of fixing, a method of fixing from the inside with a shaft core whose outer diameter increases, such as an air shaft, a method of providing a shape at the end of a shaft body and fixing by fitting between adjacent shaft bodies, etc. it can.

  Furthermore, it is preferable to provide a space between the adjacent shaft bodies so that the cutter can enter the inside of the outer diameter of the shaft body. An example is shown in FIG.

  In FIG. 3, three shaft bodies 22 are arranged in the width direction, and spacers 23 are inserted between the adjacent shaft bodies, and are arranged without gaps. Further, a flange 24 for restricting the movement of the shaft body in the width direction is arranged outside the shaft bodies on both sides, and the shaft core 25 passes through the flange 24 so as to penetrate the whole. The outer diameter of the spacer is the same as the outer diameter of the shaft body, and a groove 26 is cut on the entire surface of the spacer. The outer diameter of the groove portion is designed to be smaller than the outer diameter of the shaft body. ing. By inserting the cutting edge 27 into the groove, it is possible to cut deeper than the surface layer of the shaft body around which the raw material is wound, and the raw material can be cut reliably, and the shaft tool is not damaged by the blade.

  The winding method used in step 2-1 or step 2-2 described below is not particularly limited, but a central driving method for driving the central axis of the winding roll by a motor, the central axis of the winding roll is not driven, A surface driving method in which a winding roll is arranged on one or two reel drums, the reel drum is driven, and is wound by the frictional force between the reel drum and the reel, and further, the winding is performed in the surface driving method described above. The center axis of the roll is also driven, and a surface center combined driving method combining the center driving method and the surface driving method can be exemplified.

  Reinforcing fiber sheet precursors (raw fabrics) and reinforcing fiber sheets, which are the subject of winding of the present invention, are bulky compared to general wound papers and films, etc. It is likely to be in a state and may cause collapse or tightening. The collapse of the roll is a gap between the roll layers that occurs when a force is applied in the width direction while the roll is loose, and corresponds to a phenomenon in which the end face of the roll is deformed into a bamboo shoot shape. On the other hand, winding tightening is a gap between the winding layers that occurs in the circumferential direction of the scroll when a force is applied in the circumferential direction when the scroll is loose. The friction of the sheet may cause crushing of the sheet, misalignment of the reinforcing fiber yarn, and bending. In particular, in Step 3 in which the original roll is unrolled as it is (rolled) and divided in the width direction, the roll collapse is fatal.

  Therefore, for the above-described soft winding state, a contact winding method in which contact pressure is applied to the original roll by a contact roller or a press roll is effective. According to the said system, the roll of a hard winding state can be manufactured by making an interlayer contact | adhere and winding up, crushing the thickness of a reinforcing fiber sheet. Therefore, applying this method to the winding step (step 2-1) of the present invention provides a raw roll of an aspect suitable for the slit step of step 3 that is free from collapse and tightening, and finally. Also in the product roll, since the hard winding state is maintained, it is preferable because the roll collapse and the tightening can be suppressed even when the sheet is pulled out during transportation or subsequent processing.

  Furthermore, in order to make the prevention of the roll collapse robust, in the original fabric traveling between the sheet forming process and the winding process, the original fabric position in the direction orthogonal to the traveling direction is detected, and the detected position information is wound. An EPC (Edge Position Control) function that feeds back to the take-up side and corrects the position of the take-up shaft in the width direction may be added to the take-up process of the present invention. By adding this function, even when a deviation occurs in the running position of the original fabric due to troubles or process variations, the deviation can be corrected by correcting the winding position, and a good end-face scroll without collapse can be obtained.

  Process 3 of the present invention is a slitting process in which a blade is inserted into an original roll and divided in the width direction to form a plurality of rolls. This process differs greatly from the known method of slitting the running web in the width direction and dividing the roll in the width direction directly from the state of the web roll.

  In the known method, on-line continuous from the sheet forming step of the reinforcing fiber sheet precursor, while taking the raw fabric, slit into a plurality of reinforcing fiber sheets, and individually take these slit reinforcing fiber sheets, Each is wound on a shaft. According to this method, there is a difference between the lines in the process of pulling the reinforcing fiber sheet, and the slack and suspension may cause the roll end surface to collapse due to fluctuations in the running position, or the roll may be softly wound and collapsed as above. , There are quality concerns. In particular, in the reinforcing fiber sheet, since the elongation is small and the reinforcing fiber yarn is thicker than the general materials such as film, paper, and synthetic fiber fabric, the thickness is not uniform due to the bulky. Concerns are likely to emerge. Furthermore, in the case of a woven fabric in which reinforcing fiber yarns cross each other, due to the difference in the in-plane structure of the crimp in the width direction of the reinforcing fiber sheet, a difference occurs in the thickness and warp yarn length at the center and the end in the width direction. Concerns are still growing.

  For example, when the above-mentioned EPC is applied to such a quality problem, even if the above-described EPC is applied, the deviation of the running position cannot be corrected when the separate behavior is shown between the lines. In order to solve the problem, it is necessary to install an EPC corresponding to the number of reinforcing fiber sheet lines. This is the same for the take-up tension. For example, even when tension control is performed by a dancer roll, balance is performed on the high tension side, so individual control corresponding to the number of lines is also required.

  In addition, as another means for the quality problem, a method of providing individual winding shafts for each line of the reinforcing fiber sheet is known. However, the number of winding shafts and associated facilities increases in proportion to the number of divided sheets. Therefore, the equipment cost of the winding device is high, and the sheet width and the number of divisions that can be handled are limited by the equipment, so that it becomes a dedicated machine that can only produce specific scroll specifications and lacks versatility. is there.

  On the other hand, according to the step 3 of the present invention, it is not necessary to pull out the original fabric from the original fabric roll. Therefore, the equipment cost can be suppressed and both the quality and the cost can be achieved.

  Here, step 3 will be described in detail with reference to the drawings.

  FIG. 4 is a schematic view showing an embodiment of a slitting device applied to step 3 of the present invention. The slitting device shown in FIG. 4 is roughly divided into a roll carriage 28 for installing the original roll and a cutting device 29 for cutting the original roll. In FIG. 4, the raw roll 30 is fixed in the width direction by sandwiching both ends of the shaft body with flanges 32 installed on the shaft core 31 passed through the center of the shaft body. The position of the shaft core is regulated in the width direction by the guide plates 33 installed at both ends. Here, both ends of the shaft core protruding from the shaft body are installed on the two bed rolls 34, and by rotating these free rolls, the precursor roll can be rotated manually. Moreover, as the cutting device 29, it is an electric hand saw having a blade 35 having a blade length longer than the diameter of the original roll, which is installed on a gantry and slid up and down, so that the thickness of the original roll is increased. Insert the blade. At this time, the insertion position of the blade is regulated in the width direction by the guide frame 36, so that the blade can be reliably inserted into the target position. Such a guide frame is slidable in the width direction, and can be adapted to any width specification and number of divisions by sliding to a desired position. According to the method using this slitting apparatus, the blade is reciprocated with an electric hand saw while rotating the original roll by manual operation, so that it is cut in the thickness direction of the original roll. By cutting until reaching the surface of the shaft body, it is divided into individual scrolls.

  FIG. 5 shows another embodiment of the slit device. The configuration of the slitting device in FIG. 5 is the same as that in FIG. 4, and includes a roll carriage 37 and a cutting device 38. In FIG. 5, an original roll 39 is fixed by the shaft core 41 with the adapter 40 mounted at four locations in the width direction passing through the center of the shaft body 42 and the outer diameter of the adapter expanding. . Further, bearings 43 are arranged at both ends of the shaft core 41, and one end thereof is connected to a motor 44, and the precursor roll can be rotated at a constant speed by driving the motor. As a cutting device, it is a reed prosthetic saw with a blade 45 having a longer span than the diameter of the original roll, and this is installed on a gantry and slid back and forth so that the blade is moved in the thickness direction of the original roll. Insert and cut the roll. Here, the cutting device is slidable in the width direction, and can be adapted to any width specification and the number of divisions by sliding to a desired position. According to the method using this slitting device, while automatically reciprocating the cutter, the cutter is inserted in the thickness direction of the original roll until it reaches the surface of the shaft body, and then the original roll is automatically rotated in the circumferential direction. Cut into individual scrolls.

  FIG. 6 shows still another embodiment of the slit device. The slitting device in FIG. 6 is the same as that in FIG. 5 except that two cutting devices 47 each having a rotary blade 46 are arranged in the width direction of the original fabric roll 48. According to this slitting device, three scrolls can be obtained by equal division in the width direction by one operation, so that the number of work steps can be reduced as compared with FIGS.

  4 to 6 is an example, and is not necessarily limited to this. The blade device may be divided into a width direction by inserting a blade into the original roll, and even a plurality of rolls may be obtained. For example, an appropriate specification may be designed according to the purpose, such as the rotation method of the precursor roll, the method of the cutting device, and the number of arrangements.

  In step 3, the blade is inserted to divide the original roll in the width direction, but the blade used here is not particularly limited, and may be appropriately selected depending on the cutting device to be used, such as a scissors blade or a rotary blade. The shape of the blade used in step 3 is not particularly limited, but can be selected from flat blades, corrugated blades, saw blades, etc. Among them, when the blade shape is a corrugated blade, cutting resistance is reduced. This is preferable because it leads to labor savings in the cut man-hours and can suppress the disorder of the orientation of the reinforcing fiber yarns during cutting. FIGS. 7A to 7C show an example of a blade used in step 3 of the present invention.

  In FIG. 7, (A) to (C) are all corrugated blades provided with teeth at the blade tip, and the teeth are arranged at an equal pitch P in the length direction of the blade, and the depth D have. Further, the shape of the tooth tip forms an angle θ connecting each vertex of the concavo-convex shape.

  In FIG. 7 (A), sharp tooth tips are repeatedly formed on the cutting edge, and the space between the tooth tips has a U-shaped curvature toward the peak side. Further, in FIG. 7B, the gently curved tooth tips are repeatedly formed on both sides of the unevenness of the cutting edge, and in FIG. 7C, the tooth tips in which straight lines and curves are alternately arranged are repeatedly formed. ing.

  Here, the pitch P of the tooth tip is not particularly limited, but a pitch P of 5 to 80 mm is suitable for cutting a reinforcing fiber yarn having a finer thickness than a general synthetic fiber. As the fiber yarn becomes thicker, the pitch is preferably roughened. The pitch P of the tooth tip is more preferably 10 to 50 mm, and by making it in such a range, the cut resistance and the smoothness of the cut end face are compatible while covering the fineness range of a general-purpose reinforcing fiber yarn. it can. Further, the depth D may be adjusted according to the pitch, and the angle θ formed by the pitch P and the depth D is in the range of 5 to 30 °, so that the pitch can be adjusted according to the fineness of the reinforcing fiber yarn. Even if it is adjusted, it is preferable because work man-hour and quality performance can be maintained.

  The steps 1, 2-1, and 3 have been described so far. However, the method for manufacturing a scroll according to the present invention can further include a step 2-2 between steps 2-1 and 3 to draw out the original roll, and arbitrarily A post-processing step can be included in which the material is wound up again to obtain an original roll.

  According to a known manufacturing method, since the raw fabric has already been slit at the stage where the sheet forming process is completed, it is necessary to process each wound individually wound after the slit, Cost increases. There is also a method of carrying out post-processing from the sheeting process online, but it is a large facility, and the equipment cost is large, and it is difficult to apply to all sheeting processes, so it is not versatile. On the other hand, according to the manufacturing method of the present invention, since the original roll is not slit, even when it is put into the subsequent processing described above, the entire surface of the original can be processed in a single process. Multiple fiber sheets can be processed at a time, the manufacturing cost in subsequent processing can be reduced, and since it is an off-line process, the reinforcing fiber sheet to be input is not limited and versatility is also possible high.

  Furthermore, according to the present invention, since it is possible to obtain a high-quality original roll that does not collapse, there is no deviation of the travel position during the conveyance of the original, which is derived from the original roll, even during post-processing. In addition to being excellent, even an original roll wound up after processing can be made into a roll of excellent quality.

  As optional processing in Step 2-2, rework of the original fabric (appearance inspection and defect repair), lay-up processing for stacking and integrating a plurality of original fabrics, and particles for imparting a resin material to the surface of the original fabric Examples thereof include spraying processing, spray-up processing, laminating processing, hot pressing processing, calendar processing for adjusting the surface design by smoothing the thickness by passing between rolls. By including these post-processing in the process, the value of the present invention can be further increased.

  Hereinafter, the present invention will be described in more detail with reference to examples.

(1) Production of reinforced fiber sheet precursor Warp yarns and weft yarns of carbon fiber yarns (tensile strength 3530 MPa, tensile elastic modulus 230 GPa, fineness 198 tex) are arranged at a density of 5 pieces / cm, and are woven with a rapier loom and plain weave The structure (ground texture) is covered with glass fiber yarn (fineness: 225 dtex) and low-melting copolymer nylon yarn (fineness: 55 dtex, melting point: 115 ° C.) at 270 turns / m. I let it ring. Two entangled yarns are arranged in two rows to form one ear tissue, and further, there is a section where 10 warp yarns do not exist over 20 mm at the center in the width direction of the ground structure, Similarly, an ear tissue was formed to obtain an original fabric provided with a total of four ear tissues. The obtained raw fabric had a reinforcing fiber basis weight of 198 g / m ² and a total width of 2040 mm.

(2) Evaluation method of end face deviation The difference between the maximum convex part and the maximum concave part in the end face shape of the scroll obtained in the example was measured to a unit of 0.5 mm using a straight scale. Here, in the case of an original roll, two points on both end faces are measured, and in the case of an individual divided piece, two points on both end faces are measured in each roll, and one of these two points is measured. The absolute value of the larger one was defined as the end face deviation, and the score was evaluated according to the following criteria.

◎: 2 mm or less ○: More than 2 mm, 5 mm or less Δ: More than 5 mm, 10 mm or less ×: More than 10 mm (3) Evaluation method of winding circumference The length of the web roll and the winding in the circumferential direction obtained in Examples Measure in 1mm units with a tape measure The measurement location was measured at 3 points / m in the width direction, and the average value was taken as the winding circumference.

(4) Measurement of processing time The time required for the post-processing step and the slitting step was measured, and the total was calculated as the processing time.

Example 1
The original fabric is transported to (1) a center drive type winding device (equipped with an EPC function that detects the position of one end of the original fabric) installed downstream of the manufacturing process of the reinforcing fiber sheet precursor, The set shaft (paper tube) (outer diameter: 176 mm, inner diameter: 152 mm, length: 1220 mm, weight: 2 kg used) is wound with 300 m at a constant torque to obtain an original roll. Process).

  Next, the obtained roll is placed on a roll carriage of a slitting device (device configuration is as shown in FIG. 5), and a flat blade (blade tip is straight and has no teeth) is mounted on a cutting blade cutter made by HASHIMA Co., Ltd. Thus, a cutting device was obtained. Using the slit device, a blade is inserted between the ear tissues in the center in the width direction of the ground tissue, and the entire circumference is cut while rotating the original roll at a constant speed of 0.05 rpm, and two rolls having a total width of 1020 mm (Slit process).

  Here, in the two obtained scrolls, the EPC installation side in the winding process is defined as a left roll, and the other is defined as a right roll.

(Example 2)
A contact roll was installed in the winding device, and divided into two rolls having a total width of 1020 mm in the same manner as in Example 1 except that a contact pressure of 10 kg was always applied during winding.

(Example 3)
The winding device was divided into two rolls having a total width of 1020 mm in the same manner as in Example 1 except that the winding device was a surface drive system provided with three drive rolls of two reel drums and one press roll.

(Example 4)
Example 2 except that the blade mounted on the slit device is a corrugated blade (pitch: 25.4 mm × depth: 3 mm) having the shape shown in FIG. 7B and the rotational speed of the raw roll is 0.15 rpm. In the same manner as above, it was divided into two rolls having a total width of 1020 mm.

(Example 5)
The original roll obtained in Example 2 is set in the inspection facility provided with the inspection table between the unwinding mechanism and the winding mechanism, and the appearance inspection is performed while transporting on the inspection table at a speed of 6 m / min. After the implementation, the entire length was wound up under the same conditions as in Example 2 (but without the EPC function) to obtain an original roll (after appearance inspection) (post-processing step). The obtained raw roll (after visual inspection) was subjected to the same slit processing as in Example 2 and divided into two rolls having a total width of 1020 mm.

(Comparative Example 1)
In Example 1, the raw fabric is slit between the ear tissues at the center in the width direction of the ground tissue using a rotary blade during the period from the production process of the reinforcing fiber sheet precursor to the conveyance of the raw fabric to the winding device. Then, it was wound around a paper tube as a reinforcing fiber sheet having a total width of 1020 mm to obtain two scrolls. In the two obtained scrolls, the EPC installation side is defined as a left roll and the other is defined as a right roll in the same manner as in Example 1.

(Comparative Example 2)
Two scrolls were obtained in the same manner as in Comparative Example 1 except that the winding device was the same as in Example 2.

(Comparative Example 3)
Two scrolls were obtained in the same manner as in Comparative Example 1 except that the winding device was the same as in Example 3.

(Comparative Example 4)
Two of the scrolls obtained in Comparative Example 2 were individually passed through the inspection equipment in the same manner as in Example 5 and wound up again to obtain two scrolls that had been visually inspected.

  The evaluation results of Examples 1 to 5 and Comparative Examples 1 to 4 are summarized in Table 1.

  The scrolls of Examples 1 to 5 had good end face quality with no end face deviation in all the rolls including the intermediate. In Example 1, since there is no contact pressure at the time of winding, the winding circumference is large compared to other examples, and since it is in a relatively soft winding state, a gap occurs between the winding layers. Although the end face deviation slightly increased compared to the other examples, the end face deviation remained at a practical level because the potential collapse was suppressed by the function of the EPC. Moreover, about the processing time, all the slit processes of Examples 1-5 were processed in 35 minutes and in a short time, and in Example 4 which applied the wave blade among them, about 40% compared with other Examples. Work time is reduced.

  On the other hand, in the scrolls of Comparative Examples 1 to 3, end face deviation occurs in all the scrolls. In Comparative Example 1, there is a left-right difference in the end face misalignment, and the left roll with EPC functioned has the same quality as Example 1, but the independent right roll has no effect on EPC, resulting in poor quality. It was. In Comparative Example 3 employing the surface drive method, the end face deviation is the maximum among all the comparative examples, and the product's own weight is applied in addition to the contact pressure, so that the force to spread outward is large on the scroll. It is presumed that the end face deviation occurred due to the action.

  Moreover, in the comparison of the processing time of Example 5 and Comparative Example 4, although time was required for the slit process in Example 5, the slit process was necessary because the post-processing for two scrolls could be processed at a time. Even when compared with the comparative example 4 that does not, Example 5 exceeded the total processing time. Of course, it is obvious that the superiority becomes more significant as the number of divisions increases.

  Among these examples, Example 4 was the most excellent in terms of the quality of the scroll end face and the number of work steps.

According to the present invention, it is possible to manufacture a high-quality scroll that does not collapse at low cost,
RTM (Resin Transfer Molding) molding, RFI (Resin Film Infusion) molding, RIM (Resin Injection Molding) molding, vacuum assist RTM, press molding, hand lay-up molding, autoclave molding, etc. Applicable to manufacturing. Therefore, the manufacturing method of the present invention can be applied to a wide range of fields including various members such as structural members, inner layer members, and outer layer members in transportation equipment such as aircraft, automobiles, and ships.

DESCRIPTION OF SYMBOLS 1,12 Reinforcing fiber sheet precursor 2, 7, 11, 13, 21 Warp yarn 3 Auxiliary yarn 4, 6, 15, 16 Ear tissue 5 Ground tissue 8, 19 Tuft ear 9 Tangle yarn 10, 20 Ear portion 14 Weft yarn 18 Auxiliary yarn 22, 42 Shaft body 23 Spacer 24, 32 Flange 25, 31, 41 Axle core 26 Groove 27 Cutting edge 28, 37 Roll carriage 29, 38, 47 Cutting device 30, 39, 48 Original scroll 33 Guide plate 34 Bed Roll 35, 45, 46 Blade 36 Guide frame 40 Adapter 43 Bearing 44 Motor

Claims (4)

A method for producing a scroll, comprising the following steps 1 to 3.
Step 1: A sheet forming step in which a plurality of reinforcing fiber yarns are made into a reinforcing fiber sheet precursor (hereinafter referred to as an original fabric) that is aligned in at least one direction.
Step 2-1: A winding step in which the raw material is wound around a shaft body to obtain a raw material roll.
Process 3: A slit process in which a blade is inserted into an original roll and divided in the width direction to form a plurality of scrolls. The method for manufacturing a scroll according to claim 1, comprising the following step 2-2 between step 2-1 and step 3.
Step 2-2: a post-processing step in which the raw roll obtained in step 2-1 is pulled out and subjected to arbitrary processing, and then wound up again to form a raw roll.   The method for manufacturing a scroll according to claim 1 or 2, wherein the shape of the blade is a corrugated blade.   The original fabric is a woven fabric in which reinforcing fiber yarns are aligned in at least one direction, and ear tissue is inserted at both ends in the width direction of the woven fabric and at arbitrary positions inside the width direction of the woven fabric sheet. The manufacturing method of the scroll in any one of Claims 1-3.

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