Special-shaped basalt fiber forming device suitable for concrete

Abstract

The utility model discloses a special-shaped basalt fiber forming device suitable for concrete, and belongs to the technical field of basalt fiber processing. The device is sequentially provided with an unwinding mechanism, a forming mechanism, a curing mechanism and a winding mechanism in the fiber advancing direction. The forming mechanism comprises a rack, a first special-shaped pore plate, a second special-shaped pore plate, a distance adjusting mechanism, a gluing mechanism and a wrapping mechanism, wherein the first special-shaped pore plate and the second special-shaped pore plate are oppositely arranged in parallel. And special-shaped through holes with target section shapes are formed in the centers of the two special-shaped pore plates. According to the fiber bundle forming device, mechanical forming of fiber bundles is achieved through the double special-shaped pore plates in combination with distance adjustment and axial tension, gluing and fiber wrapping are synchronously completed in the forming interval, then curing forming is conducted, the process bottleneck that basalt melt cannot be directly drawn and formed due to surface tension is effectively overcome, and the production efficiency is improved. A stable and efficient special-shaped fiber preparation path is provided, and continuous production of the special-shaped basalt fiber is achieved.

Description

Technical Field

[0001] This utility model relates to the field of basalt fiber processing technology, and in particular to a molding device for irregularly shaped basalt fibers suitable for concrete. Background Technology

[0002] Basalt fiber, an inorganic fiber material prepared from natural basalt ore through high-temperature melting and drawing, shows promising application prospects in concrete reinforcement due to its high strength, high modulus, excellent temperature resistance, and corrosion resistance. Theoretically, fibers with irregular cross-sections (such as triangular, rectangular, and rhomboid shapes) offer greater mechanical interlocking force and anchoring effect, and therefore have greater potential in suppressing concrete cracking and improving toughness and impact resistance compared to circular cross-section fibers.

[0003] In existing technologies, directly producing irregularly shaped cross-section fibers from basalt fibers through the drawing process faces fundamental technical bottlenecks. Basalt fiber formation relies on the rapid drawing and cooling of a high-temperature melt through a platinum-rhodium alloy spinneret. During this process, the molten basalt droplets, driven by their enormous surface tension, spontaneously tend to form a circular cross-section with the smallest surface area. If an irregularly shaped nozzle is forcibly used, the melt, after flowing out of the spinneret and before complete solidification, cannot maintain the preset angular shape and will quickly shrink back into an approximately circular or elliptical shape. This physical phenomenon results in uncontrolled cross-sectional shape and uneven diameter of the directly drawn fibers, and significant residual stress within them, making fiber breakage highly likely. This leads to an extremely unstable production process, low yield, and inability to achieve continuous industrial production.

[0004] Therefore, it is necessary to provide a molding apparatus for irregularly shaped basalt fibers suitable for concrete to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention overcomes the shortcomings of the prior art and provides a molding device for irregularly shaped basalt fibers suitable for concrete.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a molding device for irregularly shaped basalt fibers suitable for concrete, comprising: arranged sequentially along the fiber travel direction;

[0007] Unwinding mechanism;

[0008] A forming mechanism is used to bundle, shape, and wrap multiple strands of basalt fibers;

[0009] A curing mechanism is used to cure and shape the wrapped fiber bundles; and

[0010] Receiving and collecting institutions;

[0011] The forming mechanism includes:

[0012] a rack;

[0013] a first profiled hole plate and a second profiled hole plate, which are installed in parallel and face each other on the rack;

[0014] a distance adjusting mechanism, which is installed on the rack and connected with the first profiled hole plate and / or the second profiled hole plate, is used to drive at least one of the first profiled hole plate and the second profiled hole plate to move so as to adjust the distance therebetween;

[0015] a gluing mechanism, which is arranged between the first profiled hole plate and the second profiled hole plate, is used to apply glue liquid to the surface of the fiber bundle; and

[0016] a wrapping mechanism, which is arranged between the first profiled hole plate and the second profiled hole plate and located downstream of the gluing mechanism, comprises a wrapping head that can rotate around the fiber bundle.

[0017] In a preferred embodiment of the utility model, the first profiled hole plate and the second profiled hole plate are fixed hole plates of modular design, which are installed on the distance adjusting mechanism through quick-change connecting mechanisms.

[0018] In a preferred embodiment of the utility model, the first profiled hole plate is located upstream, and the second profiled hole plate is located downstream.

[0019] In a preferred embodiment of the utility model, the cross-sectional size of the profiled through hole of the second profiled hole plate is greater than the cross-sectional size of the profiled through hole of the first profiled hole plate; and the cross-sectional shape of the profiled through hole is one of a triangle, a rectangle or a rhombus.

[0020] In a preferred embodiment of the utility model, the distance adjusting mechanism comprises:

[0021] a guide rail, which is installed on the rack;

[0022] a sliding block, which is arranged on the guide rail, and the second profiled hole plate is installed on the upper surface of the sliding block; and

[0023] a driving member, which is connected with the sliding block.

[0024] In a preferred embodiment of the utility model, the gluing mechanism is a precise metering glue dropping valve or a glue dipping groove.

[0025] In a preferred embodiment of the utility model, the wrapping mechanism further comprises a yarn supply unit for supplying yarn to the wrapping head, and the wrapping head is installed on the rack through a ring-shaped track or a rotating arm.

[0026] In a preferred embodiment of the utility model, the special-shaped through hole is provided with a bundling groove, and the bundling groove is an open groove penetrating through the upper side plate body of the first special-shaped hole plate or the second special-shaped hole plate.

[0027] In a preferred embodiment of the utility model, the curing mechanism is an ultraviolet curing lamp box or a hot air oven, and the inlet end of the curing mechanism is arranged close to the outlet end of the second special-shaped hole plate.

[0028] In a preferred embodiment of the utility model, the cross-sectional area of the special-shaped through hole of the second special-shaped hole plate is 5% to 20% larger than the cross-sectional area of the special-shaped through hole of the first special-shaped hole plate.

[0029] The utility model solves the defects in the background art and has the following beneficial effects:

[0030] (1) The utility model provides a special-shaped basalt fiber forming device suitable for concrete, which is integrated with unwinding, forming, curing and winding mechanisms, wherein the forming mechanism adopts double special-shaped hole plates in parallel opposition to realize mechanical shaping of the fiber bundle in cooperation with spacing adjustment and axial tension, and simultaneously completes gluing and fiber wrapping in the shaping interval, and finally realizes permanent fixation of the cross-sectional shape through the curing mechanism, thereby solving the technical bottleneck that the special-shaped basalt fiber cannot be directly drawn due to the surface tension of the melt, and providing a stable and feasible alternative process path.

[0031] (2) The utility model constructs an adjustable and controllable mechanical shaping area by arranging the first special-shaped hole plate and the second special-shaped hole plate in parallel opposition and cooperating with the spacing adjustment mechanism and the axial tension. This structure forces multiple circular basalt fiber raw wires to be constrained and pass through the special-shaped through hole under the action of axial tension, thereby passively and accurately filling the preset special-shaped cross section, and realizing stable and controllable shaping of the fiber cross-sectional shape.

[0032] (3) The utility model designs the cross-sectional size of the special-shaped through hole of the second special-shaped hole plate to be larger than that of the first special-shaped hole plate, and reserves a size allowance for the wrapped fiber semi-finished product, so that the fiber semi-finished product with completed surface wrapping and increased diameter will not cause the outer wrapping layer to be severely scraped with the inner wall of the hole plate when passing through the downstream second special-shaped hole plate, thereby protecting the integrity of the wrapping layer and preventing the fiber from being damaged or the structure from being damaged due to scratching.

[0033] (4) The utility model discloses a set of fiber bundle groove is set up on the upper side plate body of the through hole plate, provides the fiber bundle radial placement lead -through passageway, so that the operator need not with great difficulty axial from one end of the special-shaped through -hole into the fiber bundle, but can conveniently put the fiber bundle from the set of fiber bundle groove above and slide to the working position. Simplify the silk operation, reduce the working difficulty and time cost. Especially suitable for the flexible production scene of frequently changing product specification, improves the comprehensive efficiency of whole production line.

[0034] (5) The utility model discloses a set of upper gluing mechanism and wrapping mechanism are set gradually between the first and second special-shaped hole plate, and this space layout makes the fiber bundle in just complete mechanical setting, the most regular state of shape, immediately carries out surface gluing and synchronously winds the reinforcing fiber, finally through the curing mechanism of immediate vicinity, the process circulation time is shortened, and the shape relaxation or damage risk of semi -finished product because circulation is reduced. Further, this online composite process ensures that the wrapping layer and core fiber bundle are combined more firmly under the action of adhesive, and the structural integrity and durability of the final product are significantly enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0035] The utility model will be further explained in connection with the drawings and examples;

[0036] Figure 1 It is the whole structure diagram of the forming device of the special-shaped basalt fiber of the embodiment 1 of the utility model;

[0037] Figure 2 It is the structure diagram of the first special-shaped hole plate and second special-shaped hole plate of the embodiment 1 of the utility model;

[0038] Figure 3 It is the structure diagram of the first special-shaped hole plate and second special-shaped hole plate of the embodiment 2 of the utility model.

[0039] In the drawing: 1, pay -off mechanism, 2, forming mechanism, 21, first special-shaped hole plate, 22, second special-shaped hole plate, 23, upper gluing mechanism, 24, wrapping mechanism, 201, special-shaped through -hole, 202, set of fiber bundle groove, 3, curing mechanism, 4, winding mechanism, 5, rack, 6, spacing adjusting mechanism. DETAILED DESCRIPTION

[0040] The utility model relates to a forming device for special-shaped basalt fiber suitable for concrete, which is a post-processing device specially designed for preparing special-shaped cross-section basalt fiber for reinforcing concrete. Basalt fiber is formed by rapidly drawing and cooling molten basalt ore at high temperature through a platinum-rhodium alloy bushing. In the high-temperature molten state, the surface tension of the melt is extremely strong, which can strongly drive the liquid cross-section to be circular with the smallest surface area. If a special-shaped nozzle is used directly, the melt cannot maintain its corners after flowing out and before solidification, and will immediately shrink into a circular or oval shape, resulting in shape out of control, uneven fiber diameter and internal stress concentration, and the fiber is prone to breakage. Therefore, the process of directly drawing special-shaped fiber is extremely unstable, the yield is extremely low, and industrialized continuous production cannot be realized. Therefore, the utility model provides a forming route of "firstly preparing a conventional circular cross-section raw fiber, and then combining and shaping in a subsequent process", and through the forming device, multiple circular basalt fiber raw wires are bundled, mechanically shaped through a special-shaped hole plate, and combined with outer fiber wrapping, to stably and efficiently manufacture special-shaped basalt fiber products with accurate shape and firm structure.

[0041] The prepared special-shaped basalt fiber product has a triangular, rectangular or rhombic cross-section, and has corners and flat surfaces, which provide a large "anchoring point" for the concrete matrix. When the special-shaped basalt fiber product bears tension and tends to be pulled out, the concrete will have a strong mechanical interlocking effect with the corners of the special-shaped basalt fiber product, which is much stronger than chemical bonding and friction, and can greatly increase the difficulty of pulling the fiber out of the matrix, thereby fully exerting the tensile strength of the special-shaped basalt fiber product itself.

[0042] The utility model will be further described in detail in combination with the drawings and examples. These drawings are simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the structure related to the utility model.

[0043] Example 1

[0044] Figure 1 The overall structure diagram of the forming device for special-shaped basalt fiber suitable for concrete in this embodiment is shown. The forming device for special-shaped basalt fiber includes, arranged in sequence along the fiber running direction: a unwinding mechanism 1, a forming mechanism 2, a solidification mechanism 3 and a winding mechanism 4.

[0045] The unwinding mechanism 1 is a common fiber yarn frame unwinding equipment in the prior art, which is used to stably release multiple basalt fiber raw wires and maintain the basic stability of their running tension. The unwinding mechanism 1 includes a support for carrying multiple fiber spindles, a guide roller group for guiding the fiber path, and a simple tension control device for preliminary detection and adjustment of fiber tension, to ensure that the fiber can be conveyed to the downstream forming mechanism 2 with controllable tension.

[0046] Further, the unwinding mechanism 1 is installed with multiple spindles, which are installed in a vertical or horizontal manner. Each spindle is wound with a single strand of basalt fiber filament with a circular cross-section. The basalt fiber filaments discharged from the spindles are guided by the godet roller set to smoothly converge in a predetermined path, preventing mutual interference or entanglement. The number of spindles determines the number of core fibers in the final shaped fiber bundle, which can be adjusted according to product specifications.

[0047] The winding mechanism 4 of the present embodiment is a spool winding device, which is arranged at the end of the shaped basalt fiber forming device, for winding the final shaped basalt fiber product into a regular package.

[0048] The winding mechanism 4 includes a winding roller driven by a drive motor, a yarn guide wire that guides the lateral reciprocating arrangement of the fibers, and a finished product tension controller that controls the tension during winding, achieving continuous and orderly collection of the shaped basalt fiber product.

[0049] The shaping mechanism 2 of the present embodiment is arranged downstream of the unwinding mechanism 1, for bundling, shaping, and wrapping multiple strands of basalt fiber filaments. The shaping mechanism 2 includes a rack 5, a first shaped hole plate 21, a second shaped hole plate 22, a spacing adjustment mechanism 6, a gluing mechanism 23, and a wrapping mechanism 24.

[0050] Specifically, the rack 5 is the basic support structure of the entire shaping mechanism 2, which is welded or bolted from profile steel, providing a rigid mounting platform for all sub-components.

[0051] As shown in Figure 2 , the first shaped hole plate 21 and the second shaped hole plate 22 are both made of tool steel or ceramic materials with high hardness and wear resistance, and are arranged in parallel and directly on the rack 5. Among them, the first shaped hole plate 21 is located upstream, close to the unwinding mechanism 1; the second shaped hole plate 22 is located downstream. The center of the first shaped hole plate 21 and the second shaped hole plate 22 is provided with a shaped through hole 201, the cross-sectional shape of which is consistent with the target cross-section of the final product, such as triangle, rectangle or rhombus. It is worth mentioning that the first shaped hole plate 21 and the second shaped hole plate 22 are fixed hole plates designed in a modular manner, which are installed on the spacing adjustment mechanism 6 through positioning pins cooperating with hydraulic clamps or quick pressure plates, facilitating quick replacement of the entire hole plate according to different product specifications.

[0052] Further, the cross-sectional size of the shaped through hole 201 of the second shaped hole plate 22 is configured to be slightly larger than that of the first shaped hole plate 21. Specifically, the cross-sectional area of the shaped through hole 201 of the second shaped hole plate 22 is 5% to 20% larger than that of the first shaped hole plate 21, providing an unobstructed passage for the subsequent shaped basalt fiber semi-finished product after wrapping treatment and diameter increase, effectively preventing the wrapping layer from being scratched or damaged when passing through the second hole plate.

[0053] In this embodiment, the spacing adjustment mechanism 6 is mounted on the frame 5 and is used to adjust the axial distance between the first irregularly shaped perforated plate 21 and the second irregularly shaped perforated plate 22. A preferred embodiment of the spacing adjustment mechanism 6 includes: a guide rail fixedly mounted on the frame 5, a slider disposed on the guide rail, and a driving component fixedly connected to the slider. The driving component is one of a ball screw pair driven by a servo motor, a hydraulic cylinder, or a pneumatic cylinder, used to drive the slider to slide axially along the guide rail. The second irregularly shaped perforated plate 22 is detachably mounted on the upper surface of the slider via a positioning pin and a hydraulic clamp or a quick-release plate.

[0054] In this embodiment, the gluing mechanism 23 is disposed between the first irregular perforated plate 21 and the second irregular perforated plate 22. It is used to apply an adhesive or a special wetting agent to the surface of the multi-strand basalt fiber filaments when they are initially shaped but not yet wrapped. The adhesive is one of epoxy resin, unsaturated polyester, etc.

[0055] The gluing mechanism 23 is either a precision metering dispensing valve or a dipping tank. The precision metering dispensing valve can accurately control the flow rate and dispensing position of the adhesive, while the dipping tank allows the slowly conveyed fiber bundle to be briefly immersed in it to achieve uniform coating. By applying adhesive to the fiber bundle, the bundle's cohesion is increased, and an adhesive medium is provided for subsequent wrapping.

[0056] In this embodiment, the wrapping mechanism 24 is disposed between the first shaped perforated plate 21 and the second shaped perforated plate 22, and is located downstream of the gluing mechanism 23. It is used to tightly wrap at least one layer of basalt fiber yarn around the surface of the glued shaped fiber bundle for morphological reinforcement.

[0057] The wrapping mechanism 24 includes: a winding head and a yarn supply unit for supplying fine basalt fiber yarn for wrapping to the winding head. The winding head is one or two yarn feeders that can rotate at high speed around the fiber bundle. The winding head is mounted on the frame 5 via a ring track or rotating arm and moves in a circular motion around the traveling fiber bundle.

[0058] With the setting of the wrapping mechanism 24, the fiber bundle is wrapped in time under tension and shaping conditions, which can effectively fix its irregular cross-section and prevent it from spreading out in subsequent processing and concrete mixing.

[0059] In this embodiment, the curing mechanism 3 is located downstream of the forming mechanism 2 and upstream of the winding mechanism 4. It is used to receive the semi-finished irregularly shaped basalt fiber that has been wrapped, and to use hot air or ultraviolet light to quickly complete the curing reaction of the adhesive or impregnating agent on the surface of the semi-finished irregularly shaped basalt fiber, so as to permanently and firmly combine the wrapping layer and the internal fiber bundle into a whole, and realize the final shaping of the irregular cross section.

[0060] Furthermore, the specific implementation of the curing mechanism 3 depends on the type of adhesive used, and is specifically divided into:

[0061] The hot air curing oven comprises: a heat-insulated box body, built-in electric heating pipes or far-infrared heaters, high-temperature-resistant centrifugal fans, hot air circulation air ducts, and a temperature control system. The fan sucks in air, which becomes high-temperature hot air after flowing through the heating element, and forms a uniform and circulating hot air field in the box body through the air duct. The profiled basalt fiber semi-finished product is inserted from one end of the hot air curing oven and taken out from the other end. In this process, the fiber bundle is uniformly heated, and the adhesive (such as epoxy resin or unsaturated polyester resin) on the surface of the fiber bundle undergoes crosslinking reaction at a temperature of 80-200℃ and a set time, and changes from a liquid or gel state to a solid state, completing the curing.

[0062] Or the ultraviolet (UV) curing light box comprises: a relatively closed box body, ultraviolet lamp tubes, reflector covers, and cooling systems arranged in the box body. For the light-sensitive resin adhesive, when the profiled basalt fiber semi-finished product passes through the ultraviolet curing light box, it will be irradiated by ultraviolet light of a specific wavelength (preferably the UVA band, wavelength 365nm or 395nm) and intensity. The photoinitiator in the light-sensitive resin will quickly produce active groups after absorbing ultraviolet light, and will initiate the chain polymerization reaction of the resin monomer, completing the curing in a few seconds or even milliseconds.

[0063] It should be noted that no matter which form of hot air or ultraviolet light is used in the curing mechanism 3, the inlet end of the curing mechanism 3 is arranged close to the outlet end of the second profiled hole plate 22, which minimizes the exposure time and travel of the profiled basalt fiber semi-finished product in the air, prevents shape distortion due to external interference or internal stress rebound, and ensures continuous and stable process from shaping, wrapping to curing.

[0064] When the utility model is used, according to the target product specification, for example, preparing the profiled basalt fiber product of rhombic section, by 15 2400 Tex basalt fiber filaments. The first profiled hole plate 21 with the corresponding rhombic through hole and the second profiled hole plate 22 are respectively installed on the rack 5 and the slider of the spacing adjusting mechanism 6, and the initial positions of the first profiled hole plate 21 and the second profiled hole plate 22 are the closest. Subsequently, the basalt fiber filaments drawn from the 15 spindles of the unwinding mechanism 1 are gathered into a bundle through the guide roller group, pass through the first profiled hole plate 21, the gluing area, the wrapping area, the second profiled hole plate 22, the ultraviolet curing light box in turn, and finally fixed on the winding mechanism 4.

[0065] After the start of the device, the unwinding mechanism 1 and the tension control system of the winding mechanism 4 work together to establish a constant axial tensile force on the fiber bundle. The servo motor driven ball screw pair of the spacing adjustment mechanism 6 drives the second special-shaped hole plate 22 to translate, so that it is separated from the first special-shaped hole plate 21 to a set distance. The fiber bundle is forced to be constrained in the diamond-shaped hole of the first special-shaped hole plate 21 and the second special-shaped hole plate 22 under the action of tension, and the cross-sectional shape is completed.

[0066] The shaped fiber bundle passes through the impregnation tank with UV-curable epoxy resin, enters the wrapping process, and the wrapping head makes high-speed circumferential motion around it to tightly wrap the 1200 Tex basalt fiber yarn from the yarn supply unit on the surface at a high wrapping angle, forming a dense reinforcement layer. After the wrapped fiber semi-finished product leaves the second special-shaped hole plate 22, it enters the ultraviolet curing lamp box arranged next to it, and under the irradiation of ultraviolet light with a wavelength of 365 nm, the adhesive rapidly crosslinks and cures, permanently bonding the wrapping layer and the core fiber bundle into a diamond-shaped composite fiber with stable cross-sectional shape and overall fineness meeting the requirements of concrete application. Finally, the product is wound into a regular roll by the winding mechanism 4 under constant tension.

[0067] Example 2:

[0068] Based on Example 1, this example improves the first special-shaped hole plate 21 and the second special-shaped hole plate 22 to further optimize the convenience of threading operation and improve the efficiency of the equipment preparation stage.

[0069] As shown in Figure 3 , the special-shaped through hole 201 of the first special-shaped hole plate 21 and the second special-shaped hole plate 22 of this example is provided with a bunching groove 202. The bunching groove 202 is an open groove that penetrates the upper side plate of the first special-shaped hole plate 21 or the second special-shaped hole plate 22. The bottom of the bunching groove 202 is in communication with the special-shaped through hole 201, and the top opening of the bunching groove 202 extends to the upper edge of the plate body. The width of the bunching groove 202 is slightly larger than the diameter of the single basalt fiber filament, but the depth and opening width are sufficient to allow a bundle of fiber filaments to be easily placed in.

[0070] When threading during the preparation stage, the operator no longer needs to struggle to thread the fiber bundle from the tiny hole end of the special-shaped through hole 201. Instead, the operator only needs to place the gathered fiber bundle radially from above into the bunching groove 202 and make it slide down the groove, and the fiber bundle can be conveniently positioned in the special-shaped through hole 201. This significantly reduces the difficulty of guiding multiple loose fibers into the precise special-shaped hole, especially when changing product specifications and frequently threading fibers, which can greatly reduce preparation time, reduce work intensity, and improve the operating efficiency of the entire production line.

[0071] It should be noted that when the fiber bundle is applied with axial tension and enters the normal production state, the fiber bundle will be tightly filled in the special-shaped through hole 201, at this time, the existence of the bundling groove 202 will not have a negative impact on the shaping effect of the fiber. In order to ensure the integrity of the special-shaped through hole 201 during production, a corresponding cover member (not shown in the figure) can be provided outside the first special-shaped hole plate 21 or the second special-shaped hole plate 22, which closes the opening of the bundling groove 202 after the threading is completed, so as to prevent the glue solution from leaking therefrom, but this cover member is not necessary.

[0072] In addition to the above improvements of the first special-shaped hole plate 21 and the second special-shaped hole plate 22, other components of the forming device of the embodiment, including the unwinding mechanism 1, the spacing adjusting mechanism 6 in the forming mechanism 2, the gluing mechanism 23, the wrapping mechanism 24, the curing mechanism 3 and the winding mechanism 4, have the same specific structure and connection relationship as those of the first embodiment, and will not be described here.

[0073] The use process of the embodiment 2 is similar to that of the embodiment 1, and the difference mainly lies in the threading method in the preparation stage: after the special-shaped hole plate with the bundling groove 202 is installed, the gathered fiber bundle is radially placed into the bundling groove 202 of the first special-shaped hole plate 21 and the second special-shaped hole plate 22 from top to bottom, so as to be threaded into the special-shaped through hole 201, and the subsequent tension building, hole plate separation, shaping, gluing, wrapping, curing and winding steps are consistent with those of the embodiment 1.

[0074] The utility model provides a kind of special-shaped basalt fiber forming device suitable for concrete, by integrating unwinding, forming, curing and winding mechanism 4, wherein, forming mechanism 2 adopts double special-shaped hole plates of parallel and opposite, and realizes the mechanical shaping of fiber bundle by spacing adjustment and axial tension, and gluing and fiber wrapping are completed synchronously in shaping interval, finally realizes the permanent fixation of cross-sectional shape by curing mechanism 3, solve the technical bottleneck that direct drawing special-shaped basalt fiber cannot be carried out due to melt surface tension, provide a stable, feasible alternative process path.The utility model first realizes the continuous, stable, efficient forming of special-shaped basalt fiber from round raw wire to final product, and lays a solid equipment foundation for the large-scale popularization and application of special-shaped basalt fiber in concrete reinforcement field.

[0075] According to the ideal embodiment of the utility model, the related personnel can make various changes and modifications without deviating from the technical idea of the utility model through the above description. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A forming device of a profiled basalt fiber suitable for concrete, characterized in that, comprise a plurality of basalt fiber strands arranged sequentially along a fiber travel direction, and a plurality of binder yarns arranged around the plurality of basalt fiber strands; an unwinding mechanism (1); a forming mechanism (2) for bundling and sizing the plurality of basalt fiber strands and wrapping the plurality of basalt fiber strands with the plurality of binder yarns; a curing mechanism (3) for curing and sizing the plurality of basalt fiber strands wrapped with the plurality of binder yarns; and a winding mechanism (4); The forming mechanism comprises: a rack (5); a first profiled hole plate (21) and a second profiled hole plate (22) installed in parallel and facing each other on the rack (5); a spacing adjustment mechanism (6) installed on the rack (5) and connected with the first profiled hole plate (21) and / or the second profiled hole plate (22) for driving at least one of the first profiled hole plate (21) and the second profiled hole plate (22) to move to adjust the spacing therebetween; a glue applying mechanism (23) arranged between the first profiled hole plate (21) and the second profiled hole plate (22) for applying glue to the surface of the plurality of basalt fiber strands; and a wrapping mechanism (24) arranged between the first profiled hole plate (21) and the second profiled hole plate (22) and downstream of the glue applying mechanism (23), the wrapping mechanism (24) comprising a wrapping head rotatable around the plurality of basalt fiber strands. The first profiled hole plate (21) and the second profiled hole plate (22) are fixed profiled hole plates of modular design and are installed on the spacing adjustment mechanism (6) through quick-change connecting mechanisms.

2. A forming device for shaped basalt fibers for concrete according to claim 1, characterized in that: The first profiled hole plate (21) is located upstream, and the second profiled hole plate (22) is located downstream.

3. A forming device for shaped basalt fibers for concrete according to claim 1, characterized in that: The cross-sectional size of the profiled through hole (201) of the second profiled hole plate (22) is greater than the cross-sectional size of the profiled through hole (201) of the first profiled hole plate (21); and the cross-sectional shape of the profiled through hole (201) is one of a triangle, a rectangle or a rhombus.

4. A forming device for shaped basalt fibers for concrete according to claim 1, characterized in that: The spacing adjustment mechanism (6) comprises:

5. A forming device for shaped basalt fibers for concrete according to claim 1, characterized in that: a guide rail installed on the rack (5); a sliding block arranged on the guide rail; and a driving member connected with the sliding block; The second profiled hole plate (22) is installed on the upper surface of the sliding block. The glue applying mechanism (23) is a precise metering glue dropping valve or a glue dipping groove.

6. A forming device for shaped basalt fibers for concrete according to claim 1, characterized in that: The wrapping mechanism (24) further comprises a yarn supplying unit for supplying yarn to the wrapping head, and the wrapping head is installed on the rack (5) through a ring-shaped track or a rotating arm.

7. A forming device for shaped basalt fibers for concrete according to claim 1, characterized in that: The profiled through hole (201) is provided with a bundling groove (202), and the bundling groove (202) is an open groove penetrating through the upper side plate of the first profiled hole plate (21) or the second profiled hole plate (22).

8. A forming device for shaped basalt fibers for concrete according to claim 4, characterized in that: The curing mechanism (3) is an ultraviolet curing lamp box or a hot air oven, and the inlet end of the curing mechanism (3) is arranged adjacent to the outlet end of the second profiled hole plate (22).

9. A forming device for shaped basalt fibers for concrete according to claim 1, characterized in that: The cross-sectional area of the profiled through hole (201) of the second profiled hole plate (22) is 5% to 20% greater than the cross-sectional area of the profiled through hole (201) of the first profiled hole plate (21).

10. A forming device for shaped basalt fibers for concrete according to claim 4, characterized in that: ​

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