A fabric winding device for preparing large diameter composites

Abstract

The application discloses a fabric winding device for preparing a large-diameter composite, and belongs to the field of fabric winding processing equipment.The fabric winding device comprises a first winding roller, a second winding roller, a film tearing assembly, a guide roller assembly and a cutting assembly which are arranged between the first winding roller and the second winding roller; the first winding roller is wound with a fabric which is to be wound into a roller; the second winding roller is wound with part of the fabric on the first winding roller; the film tearing assembly tears the film on both sides of the fabric; the guide roller assembly is used for guiding the fabric; and the cutting assembly cuts the fabric so as to separate the fabric into multiple sections which are wound on the second winding roller.

Description

Technical Field

[0001] This application relates to the field of fabric winding processing equipment, and in particular to a fabric winding apparatus for preparing large-diameter composite materials. Background Technology

[0002] Composite materials possess advantages such as high specific strength, high specific modulus, good corrosion resistance, and strong design flexibility, and are widely used in aerospace, wind turbine blades, rail transportation, pressure vessels, ships, and large structural components. In the preparation of large-diameter composite material products, it is often necessary to segment, transfer, and wind reinforcing fabrics, prepreg fabrics, film-coated fabrics, or adhesive-coated composite fabrics according to preset dimensions, lengths, or number of layers for subsequent layup, molding, winding, or curing processes.

[0003] In related processes, fabrics are typically stored in roll form on rollers. To prevent contamination, sticking, wrinkling, or performance degradation during storage, transportation, or unwinding, protective films, release films, or isolation films may be applied to both sides of the fabric. Before preparing the composite, the films on both sides of the fabric need to be removed, the fabric is guided to the target position, and the continuous fabric is cut into multiple segments according to process requirements and then wound onto rollers separately.

[0004] However, existing fabric winding processing equipment usually has the following problems: on the one hand, the processes of film tearing, guiding, cutting and winding are often completed step by step by different equipment or manual labor, the process connection is complicated, the degree of manual participation is high and the production efficiency is low; on the other hand, during the film removal process, if the fabric is not stably guided or the tension is not properly controlled, it is easy to cause incomplete film removal, fabric wrinkling, displacement or uneven force, which in turn affects the subsequent cutting position and winding quality. Summary of the Invention

[0005] To address the issue of high manual intervention and low production efficiency, this application provides a fabric winding apparatus for preparing large-diameter composite materials.

[0006] The fabric winding device for preparing large-diameter composite materials provided in this application adopts the following technical solution:

[0007] A fabric winding apparatus for preparing large-diameter composites includes: a support, a first winding roller, a second winding roller, and a film-tearing assembly, a guide roller assembly, and a cutting assembly disposed between the first winding roller and the second winding roller; the first winding roller has a fabric to be separated and wound into a roller; the second winding roller has a portion of the fabric on the first winding roller wound around it; the film-tearing assembly tears the film on both sides of the fabric; the guide roller assembly guides the fabric; and the cutting assembly cuts the fabric to divide it into multiple segments that are wound onto the second winding roller.

[0008] Furthermore, multiple sets of the first winding roller, the film-tearing assembly, and the guide roller assembly are arranged along the axial direction of the second winding roller; the fabric on the multiple sets of the first winding roller is conveyed to the second winding roller through the film-tearing assembly, the guide roller assembly, and the cutting assembly.

[0009] Furthermore, the support is provided with a guide rail and a sliding frame that slides with the guide rail; the second winding roller is disposed on the sliding frame; the length direction of the guide rail is the same as the path direction of the fabric.

[0010] Furthermore, a guide frame is provided on the support frame or the sliding frame, and a guide groove is provided on the guide frame for the fabric to pass through.

[0011] Furthermore, the film-tearing assembly includes a third winding roller, a fourth winding roller, and a drive unit that drives the third winding roller and the fourth winding roller to rotate; the third winding roller is located above the fourth winding roller, the third winding roller winds the upper film of the fabric, and the fourth winding roller winds the lower film of the fabric; the main body of the fabric is conveyed outward between the third winding roller and the fourth winding roller via the guide roller assembly.

[0012] Furthermore, the third winding roller includes a mounting plate, a first fastening block, and a second fastening block; the cross-sections of the first fastening block and the second fastening block are both minor arc shapes; a guide groove is provided on the mounting plate, a first guide block is provided on the first fastening block, and a second guide block is provided on the second fastening block; the first guide block and the second guide block are both slidably engaged with the guide groove so that the first fastening block and the second fastening block are close to or far from each other.

[0013] Furthermore, the mounting plate is also provided with a slot, and a rotating shaft is provided in the slot. The rotating shaft is located between the first fastener and the second fastener. An elastic mechanism is provided at the first guide block and the second guide block to bring the first guide block and the second guide block closer to each other. At least part of the rotating shaft has a non-circular structure so that during the rotation of the rotating shaft, it abuts against the first fastener and the second fastener to drive the first fastener and the second fastener away from each other or separates from the first fastener and the second fastener to the elastic mechanism driving the first fastener and the second fastener closer to each other.

[0014] Furthermore, the non-circular structure of the rotating shaft has a long end and a short end; when the long end is horizontal, the first buckle and the second buckle are close to each other, and when the short end is horizontal, the first buckle and the second buckle are far apart from each other; a through hole is provided at the long end; the first buckle plate and the second buckle plate are at least partially recessed inward.

[0015] Furthermore, the third winding roller also includes a limiting plate, which is located on the side of the first and second fastening blocks away from the mounting plate; the limiting plate is provided with a sliding groove, which is opposite to the guide groove; the mounting plate is provided with a protruding shaft, which is connected to the driving member; when the first and second fastening blocks are close to each other, the size of the first and second fastening blocks is larger than the size of the limiting plate.

[0016] Furthermore, the structure of the fourth winding roller is matched with that of the third winding roller.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] By integrating a film-tearing assembly, a guide roller assembly, and a cutting assembly between the first and second winding rollers, the fabric can sequentially complete film-tearing, guiding, cutting, and winding operations during the transfer from the first winding roller to the second winding roller, thereby reducing the need for multiple equipment transfers or manual step-by-step processing and improving the continuity of fabric processing and production efficiency.

[0019] The film-tearing assembly can tear the film on both sides of the fabric, allowing the protective film, isolation film, or release film to be removed before the fabric enters the subsequent guiding, cutting, and winding stages. This helps to avoid the film residue affecting the quality of composite material laying, bonding, or molding.

[0020] The roller assembly is positioned between the first and second winding rollers and is used to guide the fabric, enabling it to move stably along a preset conveying path. This reduces the risk of fabric deviation, wrinkling, twisting, or tension fluctuations during unwinding and rewinding, thus improving fabric conveying stability.

[0021] The cutting component can cut the fabric, thereby dividing the continuous fabric into multiple segments that are then wound onto the second winding roller. This structure is advantageous for obtaining segmented fabric rolls of preset lengths or specifications according to the needs of large-diameter composite fabric preparation, facilitating subsequent lay-up, winding, or transfer. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0023] Figure 2 Observing from another perspective Figure 1 Structural diagram;

[0024] Figure 3 Observing from another perspective Figure 2 Structural diagram;

[0025] Figure 4 yes Figure 1 Schematic diagram of a partial structure;

[0026] Figure 5 This is a structural diagram of the film-tear assembly and some surrounding parts;

[0027] Figure 6 Observing from another perspective Figure 4 A schematic diagram of the structure;

[0028] Figure 7 This is a structural diagram of the unwinding roller and some surrounding parts;

[0029] Figure 8 This is a structural schematic diagram of the second winding roller and some surrounding parts;

[0030] Figure 9 It is a plan view of the third winding roller, the fourth winding roller, and some surrounding parts.

[0031] Figure label:

[0032] 1. Bracket;

[0033] 2. First winding roller;

[0034] 3. Second winding roller; 31. Sliding frame;

[0035] 4. Film-tear assembly; 41. Third winding roller; 42. Fourth winding roller; 43. Mounting plate; 431. Guide groove; 432. Slot; 44. First fastening block; 441. First guide block; 45. Second fastening block; 442. Second guide block; 45. Rotating shaft; 451. Non-circular structure; 452. Long end; 453. Short end; 454. Perforation; 46. Elastic mechanism; 47. Limiting plate; 471. Slide groove; 48. Protruding shaft;

[0036] 5. Guide roller assembly; 51. First guide roller; 52. Second guide roller; 53. First lifting roller; 54. Second lifting roller;

[0037] 6. Cutting assembly; 61. Cutting mechanism; 62. Horizontal displacement mechanism; 63. First clamping roller; 64. Second clamping roller; 65. Bearing plate;

[0038] 7. Unwind the winding roller;

[0039] 8. Guide frame; 81. Guide groove;

[0040] 9. Mobile stand. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0042] In the description of the embodiments of this application, it should be noted that the terms "first," "second," "third," "fourth," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance, nor as limiting quantities. Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "setting," etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through intermediate components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In the embodiments of this application, the orientation or positional relationship such as "upper", "lower", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship of the fabric winding device in normal use. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] This application provides a fabric winding device for preparing large-diameter composite materials. This device can tear, guide, adjust tension, cut to a fixed length, and rewind fabrics with upper and lower protective films, thereby dividing and winding the originally long or wide composite fabrics into multiple fabric rolls. This device is particularly suitable for fabric pretreatment, segmented feeding, and multi-roll synchronous winding in the preparation of large-diameter composite materials.

[0045] The fabric winding apparatus for preparing large-diameter composite materials provided in this application includes a support, a first winding roller, a second winding roller, and a film-tearing assembly, a guide roller assembly, and a cutting assembly disposed between the first winding roller and the second winding roller.

[0046] The first winding roller is used to wind the fabric to be separated and wound into a roller. The fabric may include a fabric body and an upper film and a lower film respectively attached to both sides of the fabric body. The upper film and the lower film may be release film, protective film, release film, or other film layers used to protect the surface of the fabric body. The second winding roller is used to receive and wind the fabric body output from the first winding roller, or to receive the fabric after the film has been torn off. The length of the fabric wound on the second winding roller can match the predetermined length of the fabric output on the first winding roller. For example, the two can be segmented according to a set length to achieve fixed-length winding.

[0047] The film-tearing assembly is used to tear the film on both sides of the fabric, that is, to peel the upper and lower films off the fabric body. The guide roller assembly is used to guide and adjust the tension of the fabric body, so that the fabric body can be fed to the second winding roller in a relatively flat and stable state. The cutting assembly is used to cut the fabric body at a predetermined position to divide the fabric body into multiple segments, and to make each segment of the fabric body wind sequentially onto the second winding roller.

[0048] With the above structure, after the fabric is released by the first winding roller, the upper and lower films are peeled off and wound up as the fabric passes through the film-tearing assembly. The main body of the fabric continues to be guided by the guide roller assembly, then cut to a set length by the cutting assembly, and finally wound by the second winding roller. Thus, the integrated processing of fabric film tearing, tensioning, cutting and winding can be realized, improving the continuity and stability of fabric feeding in the preparation of large-diameter composite materials.

[0049] In some embodiments, multiple sets of the first winding roller, the film-tearing assembly, and the guide roller assembly can be arranged along the axial direction of the second winding roller. That is, multiple first winding rollers can be arranged along the axial direction of the second winding roller, and each first winding roller corresponds to a set of film-tearing assemblies and a set of guide roller assemblies. The fabric on the multiple sets of first winding rollers can pass through the corresponding film-tearing assembly and guide roller assembly in sequence, and finally be conveyed to the second winding roller through the cutting assembly.

[0050] This setup allows multiple rolls of fabric to be fed simultaneously to the same second winding roller, or multiple fabric bodies to be wound side-by-side along the axial direction of the second winding roller, thereby improving winding efficiency. For wide-width or multi-layer fabric preforming processes, this structure can significantly reduce the time required for individual roll processing and increase the automation level of composite material preparation.

[0051] In some embodiments, the support is provided with a guide rail and a sliding frame that slidably engages with the guide rail, and the second winding roller is disposed on the sliding frame. The longitudinal direction of the guide rail is the same as the direction of the conveying path of the fabric or fabric body. The sliding frame can reciprocate along the guide rail, thereby driving the second winding roller to move closer to or away from the cutting assembly.

[0052] Specifically, during the process of winding the fabric body on the second winding roller, as the diameter of the fabric roll on the second winding roller gradually increases, the winding position between the fabric body and the second winding roller will change. By setting guide rails and sliding frames, the distance between the second winding roller and the front guide and cutting position can be adjusted to keep the fabric body in a suitable tension and winding angle, and to avoid wrinkles, shifts or local stretching of the fabric body during the winding process.

[0053] The sliding frame can be moved manually by pushing or pulling, or it can be automatically moved by means of a screw mechanism, rack and pinion mechanism, linear motor, electric push rod, or cylinder drive. A locking device can also be installed on the support to lock the sliding frame after it has moved to the predetermined position, ensuring the stability of the second winding roller during the winding process.

[0054] In some embodiments, a guide frame may also be provided on the support or sliding frame, and the guide frame has a guide groove for the fabric body to pass through. The guide groove can extend along the width direction of the fabric body and limit the edge of the fabric body. By providing the guide groove, the possibility of lateral displacement of the fabric body during conveying can be reduced, and the edge neatness during the second winding roller can be improved.

[0055] In some embodiments, the film-tearing assembly includes a third winding roller, a fourth winding roller, and a drive member. The drive member is used to rotate the third and fourth winding rollers. The third winding roller is located above the fourth winding roller and is used to wind the upper film of the fabric, while the fourth winding roller is used to wind the lower film of the fabric. The fabric body is then conveyed outward between the third and fourth winding rollers via a guide roller assembly.

[0056] Specifically, after the fabric exits from the first winding roller, the upper film peels upward and connects to the third winding roller, while the lower film peels downward and connects to the fourth winding roller. A drive unit rotates the third and fourth winding rollers, causing the upper and lower films to be continuously wound up. Simultaneously, the main body of the fabric continues to move along the conveyor path towards the second winding roller.

[0057] The driving component may include one or more of the following: a motor, a reducer, a synchronous pulley, a sprocket, and a gear transmission assembly. The third and fourth winding rollers may be driven synchronously by the same driving component or driven by independent driving components. When the third and fourth winding rollers are driven independently, the winding speed and tension can be adjusted according to the peeling resistance of the upper and lower films, thereby avoiding film breakage or uneven stress on the fabric body.

[0058] In some embodiments, the third winding roller includes a mounting plate, a first fastener, and a second fastener. Both the first and second fasteners have a slightly concave cross-section. The first and second fasteners are arranged opposite to each other and together enclose a winding structure for winding the upper film.

[0059] The mounting plate is provided with guide grooves, the first fastener block is provided with a first guide block, and the second fastener block is provided with a second guide block. Both the first guide block and the second guide block are slidably engaged with the guide grooves so that the first fastener block and the second fastener block can move closer to each other or further away from each other.

[0060] When the first and second fasteners are far apart, the combined outer diameter of the winding is relatively large, which can stably support and wind the upper film. When the first and second fasteners are close together, the combined outer diameter of the winding decreases, making it easier to remove the wound film roll from the third winding roller. Thus, the third winding roller has a variable diameter function, which reduces the difficulty of unloading the film roll while ensuring winding stability.

[0061] In some embodiments, the mounting plate is further provided with a slot, and a pivot is disposed within the slot. The pivot is located between the first latching block and the second latching block. An elastic mechanism is provided at the first guide block and the second guide block, the elastic mechanism being used to cause the first guide block and the second guide block to tend towards each other.

[0062] The elastic mechanism can be a tension spring, torsion spring, elastic rope, spring sheet, or other structure capable of providing a restoring force. For example, the elastic mechanism can be connected between the first guide block and the second guide block, so that the first and second latching blocks automatically move closer to each other when not pushed by an external force.

[0063] At least a portion of the rotating shaft has a non-circular structure. This non-circular structure can be a cam structure, an elliptical structure, a polygonal structure, or an eccentric structure. During rotation, the non-circular structure can abut against the first and second latching blocks, thereby pushing the first and second latching blocks away from each other; when the non-circular structure rotates to the yielding position, it separates from the first and second latching blocks or reduces the abutment, and the elastic mechanism drives the first and second latching blocks closer together.

[0064] With the above settings, the outer diameter of the third winding roller can be changed simply by rotating the shaft. The operation is simple, the structure is compact, and it is suitable for applications where film rolls need to be changed frequently.

[0065] In some embodiments, the non-circular structure of the shaft has a long end and a short end. The long end can be understood as the portion of the shaft with a larger outer dimension in one radial direction, and the short end can be understood as the portion of the shaft with a smaller outer dimension in another radial direction.

[0066] In one implementation, when the long end is horizontal, the first and second fastening blocks move closer together under the action of the elastic mechanism; when the short end is horizontal, the long end is vertical and abuts against the inner sides of the first and second fastening blocks, thereby causing the first and second fastening blocks to move away from each other. Thus, the expansion and contraction of the first and second fastening blocks can be achieved by rotating the shaft.

[0067] A perforation may be provided through the long end. The perforation is for the starting end of the upper membrane to pass through. The first and second fastening blocks are at least partially recessed inward to form a recess that mates with the long end.

[0068] In use, first rotate the shaft to a position convenient for film insertion, then pass the end of the upper film through the perforation. Next, rotate the shaft so that the longer end enters or abuts the recess. At this point, the end of the upper film can be clamped between the longer end and the recess, thus securing the upper film. Then, the drive unit rotates the mounting plate, which in turn drives the first and second fastening blocks and the shaft to rotate synchronously, thereby achieving the winding of the upper film.

[0069] The recessed portion can improve the stability of the fit between the long end and the first and second fastening blocks, prevent the rotating shaft from rotating incorrectly or coming out of the clamping position during the winding process, thereby improving the reliability of film fixation.

[0070] In some embodiments, as shown in the figure, the third winding roller further includes a limiting plate. The limiting plate is located on the side of the first and second fastening blocks opposite to the mounting plate. A sliding groove is provided on the limiting plate, and the sliding groove is disposed opposite to the guide groove. First guide blocks can be respectively provided at both ends of the first fastening block, with one first guide block slidingly engaging with the guide groove and the other first guide block slidingly engaging with the sliding groove. Second guide blocks can be respectively provided at both ends of the second fastening block, with one second guide block slidingly engaging with the guide groove and the other second guide block slidingly engaging with the sliding groove.

[0071] By supporting the two ends of the first and second fasteners with the mounting plate and the limiting plate respectively, the stability of the first and second fasteners during the sliding process can be improved, and the first and second fasteners can be prevented from deflecting or getting stuck when subjected to the tension of the film layer.

[0072] A protruding shaft can also be installed on the mounting plate, which is connected to the drive component. The drive component drives the mounting plate to rotate via the protruding shaft, and the mounting plate further drives the first fastening block, the second fastening block, the rotating shaft, and the limiting plate to rotate synchronously, thereby realizing the overall rotation and winding of the third winding roller.

[0073] In some embodiments, when the first and second fastening blocks are close to each other, the overall size formed by the first and second fastening blocks can be larger than the corresponding size of the limiting plate. This structure can prevent the outer edge of the limiting plate from interfering with the film winding and unwinding, and also reduce the possibility of the limiting plate scratching the edge of the film layer during the winding process.

[0074] In some embodiments, the structure of the fourth winding roller can be matched with that of the third winding roller. That is, the fourth winding roller can also include structures such as a mounting plate, a first fastening block, a second fastening block, a rotating shaft, an elastic mechanism, and a limiting plate, and can also achieve variable diameter winding and film end clamping. The fourth winding roller is used to wind up the lower film, and its working principle is the same as that of the third winding roller in winding up the upper film, which will not be described again here.

[0075] In some embodiments, the guide roller assembly includes a first guide roller, a second guide roller, a first lifting roller, a second lifting roller, and a lifting adjustment mechanism. A third winding roller and a fourth winding roller are disposed between the first guide roller and the second guide roller. The fabric body is guided by the first guide roller and the second guide roller before and after film tearing, respectively.

[0076] The first and second lifting rollers can be located on the conveying path of the fabric body and can be adjusted in height by the lifting adjustment mechanism. The lifting adjustment mechanism may include a screw lifting structure, a cylinder, an electric push rod, a linear module, or other mechanisms capable of providing vertical displacement.

[0077] By adjusting the positions of the first and second lifting rollers, the length of the fabric's path and the wrap angle within the guide roller assembly can be changed, thereby adjusting the fabric's tension. When the fabric is loose, the corresponding lifting roller can be raised or lowered to increase the fabric's path length and thus increase tension; when the fabric tension is too high, the lifting roller can be adjusted in the opposite direction to reduce the tension on the fabric. This prevents the fabric from wrinkling, slipping, or stretching during transport.

[0078] In some embodiments, the outer peripheral surfaces of the first guide roller, the second guide roller, the first lifting roller, and the second lifting roller can be configured as smooth cylindrical surfaces, or they can be provided with an anti-stick coating or a low-friction coating to reduce the frictional resistance between the fabric body and the guide rollers. For fabrics containing resin prepreg, the outer peripheral surfaces of the guide rollers can also be provided with a Teflon coating, a silicone layer, or other anti-stick structures.

[0079] In some embodiments, the cutting assembly includes a cutting mechanism and a horizontal displacement mechanism disposed on a support. The cutting mechanism is disposed on the horizontal displacement mechanism, which is used to drive the cutting mechanism to move horizontally.

[0080] The cutting mechanism may include blades, disc cutters, thermal cutters, ultrasonic cutters, or other cutting components suitable for cutting the fabric body. The horizontal displacement mechanism may include linear guides, synchronous belt modules, lead screw modules, gear and rack modules, or linear motor modules. Driven by the horizontal displacement mechanism, the cutting mechanism moves along the width direction of the fabric body, thereby completing the transverse cutting of the fabric body.

[0081] In embodiments where multiple sets of first winding rollers are arranged axially along the second winding roller, the stroke of the horizontal displacement mechanism can cover the area containing multiple fabric bodies. Therefore, the horizontal displacement mechanism can drive the cutting mechanism to simultaneously or sequentially cut multiple fabric bodies distributed along the axis of the first winding roller. This structure enables multiple fabric bodies to be segmented in the same cutting action, improving cutting efficiency and ensuring consistent cutting positions across multiple fabric bodies.

[0082] In some embodiments, the cutting assembly further includes a first clamping roller and a second clamping roller. After the fabric body passes between the first clamping roller and the second clamping roller, it is then cut by the cutting mechanism. The first clamping roller and the second clamping roller can be arranged vertically opposite each other or horizontally opposite each other, for clamping and limiting the fabric body before cutting.

[0083] By setting up a first clamping roller and a second clamping roller, the fabric body can be prevented from shaking, shifting, or curling during cutting by the cutting mechanism, thus improving the flatness of the cut. At least one of the first clamping roller and the second clamping roller can be a driving roller, or both can be driven rollers. When one of the clamping rollers is a driving roller, it can also assist in traction and conveying the fabric body to the second winding roller.

[0084] In some embodiments, the cutting assembly further includes a support plate. The support plate is disposed between the cutting mechanism and the second winding roller, and the fabric body overlaps on the support plate. The support plate is used to support the fabric body to be cut or after cutting, preventing the fabric body from hanging and sagging. The upper surface of the support plate can be flat, or it can be provided with a low-friction layer, an anti-stick layer, or multiple rolling supports to allow the fabric body to pass smoothly.

[0085] The support plate can also cooperate with the cutting mechanism to form a cutting support surface. When the cutting mechanism is a blade or a hot cutter, the support plate can provide support from below the fabric body, enabling the cutting mechanism to stably cut the fabric body.

[0086] The working process of the fabric winding device provided in the embodiments of this application will be described below.

[0087] First, the first winding roller of the fabric with upper and lower side films is mounted on the support frame. Then, the starting end of the fabric is pulled, so that the fabric passes in sequence through the front guide position of the guide roller assembly, the film tearing assembly, and the cutting assembly, and finally connects to the second winding roller.

[0088] During the film-threading process, the upper film of the fabric is peeled off from the main fabric body, and the end of the upper film is connected to the third winding roller. Specifically, this can be achieved by rotating the shaft on the third winding roller to position the perforation for easy insertion of the upper film end; then, the upper film is passed through the perforation, and the shaft is rotated again so that the long end of the shaft engages with the recesses of the first and second fasteners, thereby clamping the upper film end. Similarly, the end of the lower film is connected to the fourth winding roller.

[0089] After the device is started, the first winding roller releases the fabric, while the third and fourth winding rollers respectively wind up the upper and lower side films. The main body of the fabric continues to be conveyed to the second winding roller under the guidance of the guide roller assembly. During the conveying process, the positions of the first and second lifting rollers can be adjusted by the lifting adjustment mechanism to maintain the main body of the fabric in a suitable tension.

[0090] When the fabric body wound on the second winding roller reaches the preset length, the cutting assembly is activated. The first and second clamping rollers clamp the fabric body, and the horizontal displacement mechanism drives the cutting mechanism to move along the width direction of the fabric body to cut it. The cut fabric body continues to be wound into a roll by the second winding roller. Subsequently, the next section of fabric body can be pulled back to the second winding roller, and the above process can be repeated to achieve continuous winding of multiple sections of fabric body.

[0091] After the film roll on the third or fourth winding roller is wound, the shaft on the corresponding winding roller can be rotated, causing the first and second fastening blocks to move closer together under the action of the elastic mechanism, reducing the outer diameter of the winding. At this time, the clamping force between the film roll and the winding roller is reduced, and the operator can easily remove the film roll, thereby improving the film roll unloading efficiency.

[0092] In some embodiments, the first winding roller, the second winding roller, and the intermediate processing structure disposed between the first winding roller and the second winding roller can each be configured as two sets.

[0093] The intermediate processing structure may include at least one of the guide roller assembly, cutting assembly, film-tearing assembly, support plate, tensioning assembly, web-correcting assembly, pressure roller assembly, and cutting assembly described in the foregoing embodiments. In other words, the fabric winding device may form a first station and a second station, both of which can independently complete at least some of the processes of unwinding, guiding, cutting, film-tearing, tensioning, conveying, and winding of the fabric.

[0094] For example, the first station includes a first set of first winding rollers, a first set of guide roller assemblies, a first set of cutting assemblies, a first set of film-tearing assemblies, and a first set of second winding rollers; the second station includes a second set of first winding rollers, a second set of guide roller assemblies, a second set of cutting assemblies, a second set of film-tearing assemblies, and a second set of second winding rollers. The first and second stations can be arranged along the length of the support or along the width of the support, and this application does not limit this arrangement.

[0095] With the above setup, the entire fabric winding device can form a dual-station structure. While one station is in operation, the other station can be in standby, roll-changing, or maintenance mode. For example, when the fabric roll on the first winding roller in the first station is used up, the first station can stop working and replace the first winding roller; simultaneously, the second station can continue fabric unwinding and winding operations. As another example, when a composite roll of a preset diameter or preset number of layers has been wound onto the second winding roller in the second station, the second winding roller in the second station can be disassembled or replaced, while the first station continues production. This reduces downtime caused by replacing the first or second winding roller, improving equipment utilization and production continuity.

[0096] In some embodiments, the first and second workstations can also be configured to operate in an alternating mode. Specifically, when the first workstation is working, the second workstation performs material loading, roll changing, or manual finishing; when the first workstation needs to stop for roll changing, the second workstation switches to working mode. This method is particularly suitable for the preparation of large-diameter composite materials. Since large-diameter composite materials require long and heavy fabric rolls, roll changing operations are usually time-consuming. By alternating between the two workstations, waiting time can be significantly reduced.

[0097] In some embodiments, the fabric winding apparatus may further include an unwinding roller. The unwinding roller is used to unwind fabric that does not require film removal. For ease of description, the fabric wound on the first winding roller is referred to as the first fabric, and the fabric wound on the unwinding roller is referred to as the third fabric. The first fabric may be a fabric with a release film, protective film, or release film on its surface; the third fabric may be a fabric without a film, or a fabric that does not require film removal in this apparatus.

[0098] When the first winding rollers are configured in two sets, the unwinding roller can be located between the two sets of first winding rollers. That is, the two sets of first winding rollers can be respectively arranged on opposite sides of the unwinding roller. The two sets of first winding rollers are used to output two first fabrics, and the unwinding roller is used to output a third fabric located between the two first fabrics. During the conveying process, the two first fabrics can pass through the corresponding guide roller assembly, cutting assembly, and film-tearing assembly respectively to remove the film layer on the first fabrics; the third fabric can be directly conveyed to the second winding roller after passing through the guide roller assembly or tensioning assembly, without passing through the cutting assembly and film-tearing assembly.

[0099] In this embodiment, the guide roller assembly and the cutting assembly are mainly used to process the first fabric on the first winding roller. Specifically, after the first fabric is released from the first winding roller, it can first be guided and flattened by the guide roller assembly, then the film layer is cut or separated and guided by the cutting assembly, and then the film layer is separated from the fabric body by the film-tearing assembly. The fabric body after film tearing continues to be conveyed to the second winding roller. Since the third fabric does not require film tearing, the third fabric can bypass the cutting assembly and the film-tearing assembly, or enter the winding area after passing only through independent guide rollers, tension rollers, and correction rollers.

[0100] In some embodiments, the second winding roller may have two raised outer circles. Here, "raised outer circles" can be understood as an annular support portion, an annular step portion, or a locally increased diameter portion protruding radially outward on the outer circumference of the second winding roller. The two raised outer circles correspond to the first fabric bodies on the two sets of first winding rollers, respectively. In other words, the two first fabric bodies output from the two sets of first winding rollers and after being torn, can be wound around the two raised outer circles of the second winding roller, respectively.

[0101] The third fabric output from the unwinding roller can be wound onto the second winding roller in the area between the two raised outer circles, or wound onto a predetermined area covering the two raised outer circles and the area between them. By setting the two raised outer circles, the second winding roller can provide relatively independent support and positioning for the two first fabric bodies, allowing the two first fabric bodies to maintain a predetermined distance and position during the winding process. In this way, a composite structure including the third fabric and the two first fabric bodies can be formed on the second winding roller, thereby obtaining a composite product with another specific specification or specific cross-sectional shape.

[0102] In some embodiments, the length of the unwinding roller can be longer than the length of the first winding roller. This allows the unwinding roller to carry a wider third fabric, facilitating its participation in composite winding as a base layer, reinforcing layer, or intermediate layer. Correspondingly, the first fabric on the first winding roller can be a narrower strip or ribbon fabric, used for reinforcing winding on both sides, in specific areas, or in predetermined reinforcing regions of the third fabric.

[0103] In some embodiments, the length of the second winding roller can be longer than the sum of the lengths of the two first winding rollers and one unwinding winding roller. By giving the second winding roller a longer axial dimension, sufficient winding space can be provided for the two first fabric bodies and the third fabric, while also allowing for installation space, axial adjustment space, and correction compensation space. Therefore, even if the fabric experiences some lateral shift during transport, it is less likely to exceed the effective winding area of ​​the second winding roller, thereby improving winding stability and finished product consistency.

[0104] In some embodiments, the two raised outer circles may be spaced apart along the axial direction of the second winding roller. The spacing between the two raised outer circles can be determined based on the width of the third fabric, the target positions of the two first fabric bodies, and the structural requirements of the final composite product. The outer diameters of the two raised outer circles may be the same or different. When the thickness, width, or number of winding layers of the two first fabric bodies are the same, the two raised outer circles may have the same outer diameter; when the structural parameters of the two first fabric bodies are different or the final product requires an asymmetrical structure, the two raised outer circles may have different outer diameters.

[0105] In some embodiments, the raised outer circle can be integrally formed with the second winding roller. For example, the second winding roller can be integrally machined to form a partially diameter-enhancing annular boss.

[0106] In some embodiments, a movable frame may also be provided on the support. The movable frame is movable relative to the support. At least one of the guide roller assembly, cutting assembly, film-tearing assembly, and first winding roller may be disposed on the movable frame. Preferably, the guide roller assembly, cutting assembly, film-tearing assembly, and first winding roller are all disposed on the movable frame. In this way, the relative path of the first fabric from the first winding roller to the completion of the film-tearing process can move with the movable frame as a whole, so that the local processing relationship of the first fabric can remain stable when the position of the movable frame changes.

[0107] In some embodiments, the movable frame can move along the length of the support. The movable frame can be moved via linear guides, guide blocks, rollers, gears and racks, lead screws and nuts, chain drives, synchronous belt drives, or electric push rods. The movable frame can also be equipped with a locking mechanism, which locks the movable frame relative to the support when it reaches the working position, roll changing position, or maintenance position, preventing the movable frame from shifting during operation.

[0108] In some embodiments, two sets of movable frames may be provided. For ease of explanation, the two sets of movable frames are referred to as the left movable frame and the right movable frame, respectively. The left movable frame may be provided with a set of first winding rollers and corresponding guide roller assemblies, cutting assemblies, and film-tearing assemblies; the right movable frame may also be provided with a set of first winding rollers and corresponding guide roller assemblies, cutting assemblies, and film-tearing assemblies. The left movable frame and the right movable frame may correspond to the aforementioned two sets of first winding rollers, respectively.

[0109] When the first fabric carried by the first winding roller on the left movable frame is used up, and the unwinding roller in the right station needs to be replaced with a third fabric, the left movable frame can be moved to a more leftward position. This allows the operator more space to replace, thread, connect, or clean the first winding roller on the left movable frame. Simultaneously, the right movable frame can be moved to the left working position, allowing the first winding roller on the right movable frame to continue working. At this time, the unwinding roller in the right station is exposed in a position easily accessible for manual operation, allowing the operator to replace the third fabric on the unwinding roller in the right station.

[0110] The arrangement of the aforementioned movable frame allows for spatial misalignment of the first winding roller and the unwinding winding roller replacement operation. In other words, when the first winding roller on one side needs replacement, the corresponding movable frame can be moved out of the main working area; similarly, when the unwinding winding roller on the other side needs replacement, the position of the movable frame can be adjusted to create an easily accessible operating space. This avoids the need to replace multiple large-diameter, heavy fabric rolls in the same confined area, reducing operational difficulty and improving safety.

[0111] In some embodiments, the left and right movable frames can share a single guide rail, or they can be mounted on two separate parallel guide rails. When sharing a single guide rail, the two movable frames can move back and forth in the same direction, and are prevented from colliding with each other by limiting components. When mounted on two separate parallel guide rails, the two movable frames can move independently, facilitating more workstation switching methods.

[0112] In some embodiments, the unwinding rollers at the left and right stations can carry the same type of third fabric or different types of third fabric. For example, a fabric in the shape of a cloth can be wound on the unwinding roller at the left station, and a fabric in the shape of a rope can be wound on the unwinding roller at the right station. The fabric in the shape of a cloth can be a wide-width fabric, a sheet fabric, a felt, or a woven fabric; the fabric in the shape of a rope can be a fiber rope, a woven rope, a bundle of fibers, or a narrow strip fabric.

[0113] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fabric winding apparatus for preparing large-diameter composite materials, characterized in that, include: A first winding roller, a second winding roller, and a film-tearing assembly, a guide roller assembly, and a cutting assembly disposed between the first winding roller and the second winding roller; The first winding roller winds the fabric to be separated and wound into a roller; the second winding roller winds a portion of the fabric on the first winding roller. The film-tearing assembly tears the film on both sides of the fabric; the guide roller assembly guides the fabric; and the cutting assembly cuts the fabric to divide it into multiple segments that are wound around the second winding roller.

2. The fabric winding apparatus for preparing large-diameter composite materials according to claim 1, characterized in that: Multiple sets of the first winding roller, the film-tearing assembly, and the guide roller assembly are arranged along the axial direction of the second winding roller; The fabrics on the multiple sets of the first winding rollers are all conveyed to the second winding rollers through the tearing assembly, the guide roller assembly, and the cutting assembly.

3. The fabric winding apparatus for preparing large-diameter composite materials according to claim 2, characterized in that: The support is provided with a guide rail and a sliding frame that slides with the guide rail; the second winding roller is provided on the sliding frame; the length direction of the guide rail is the same as the path direction of the fabric.

4. The fabric winding apparatus for preparing large-diameter composite materials according to claim 3, characterized in that: A guide frame is provided on the support frame or the sliding frame, and a guide groove is provided on the guide frame for the fabric to pass through.

5. The fabric winding apparatus for preparing large-diameter composite materials according to claim 4, characterized in that: The film-tearing assembly includes a third winding roller, a fourth winding roller, and a drive unit that drives the third winding roller and the fourth winding roller to rotate; the third winding roller is located above the fourth winding roller, the third winding roller winds the upper film of the fabric, and the fourth winding roller winds the lower film of the fabric. The fabric body is conveyed outward between the third and fourth winding rollers via the guide roller assembly.

6. The fabric winding apparatus for preparing large-diameter composite materials according to claim 5, characterized in that: The third winding roller includes a mounting plate, a first fastening block, and a second fastening block; the cross-sections of the first fastening block and the second fastening block are both minor arc shapes; The mounting plate is provided with guide grooves, the first buckle is provided with a first guide block, and the second buckle is provided with a second guide block; Both the first guide block and the second guide block are slidably engaged with the guide groove so that the first buckle block and the second buckle block are close to or far from each other.

7. The fabric winding apparatus for preparing large-diameter composite materials according to claim 6, characterized in that: The mounting plate is also provided with a slot, and a pivot is provided in the slot. The pivot is located between the first fastener and the second fastener. An elastic mechanism is provided at the first guide block and the second guide block to bring the first guide block and the second guide block closer to each other; At least a portion of the rotating shaft is a non-circular structure, so that during the rotation of the rotating shaft, it abuts against the first and second fastening blocks, causing the first and second fastening blocks to move away from each other or to separate from the first and second fastening blocks, so that the elastic mechanism causes the first and second fastening blocks to move closer to each other.

8. The fabric winding apparatus for preparing large-diameter composite materials according to claim 7, characterized in that: The non-circular structure of the rotating shaft has a long end and a short end; when the long end is horizontal, the first fastener and the second fastener are close to each other, and when the short end is horizontal, the first fastener and the second fastener are far apart from each other. A through hole is provided at the long end; the first buckle plate and the second buckle plate are at least partially recessed inward.

9. The fabric winding apparatus for preparing large-diameter composite materials according to claim 8, characterized in that: The third winding roller also includes a limiting plate, which is located on the side of the first and second fasteners away from the mounting plate; The limiting plate is provided with a sliding groove, which is opposite to the guide groove; the mounting plate is provided with a protruding shaft, which is connected to the driving component; When the first and second fasteners are close to each other, the size of the first and second fasteners is larger than the size of the limiting plate.

10. The fabric winding apparatus for preparing large-diameter composite materials according to claim 9, characterized in that: The structure of the fourth winding roller is matched with that of the third winding roller.

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