Fiber composite bar processing device and its production process

Abstract

The present invention discloses a fiber composite rib processing device and a production process thereof, comprising a core rod and a first fiber bundle and a second fiber bundle interlaced and wound on the surface of the core rod; the first fiber bundle is a basalt fiber bundle, and the second fiber bundle is a carbon fiber bundle; the first fiber bundle and the second fiber bundle are interlaced and spirally wound on the core rod, and an overlapping portion is formed at the interlaced portion; the pitches of the spiral windings of the first fiber bundle and the second fiber bundle are equal, and the spacings between the overlapping portions formed after the first fiber bundle and the second fiber bundle are wound one circle are equal; the present invention provides a fiber composite rib and a processing device and a production process for producing the composite rib, the composite rib improves the strength of the fiber composite rib by interlaced winding, and at the same time, carbon fiber bundles and basalt fiber bundles of different diameters are used for winding, so that the composite rib reduces its weight while maintaining its strength.

Description

Technical Field

[0001] The invention relates to the technical field of fiber composite ribs and production equipment thereof, in particular to a fiber composite rib processing device and a production process thereof. Background Art

[0002] Steel-Basalt Fiber Hybrid Rebar (SBFCB) is a new composite material that combines the advantages of traditional steel and basalt fiber. This composite rebar has the high strength and ductility of steel, and the corrosion resistance and high temperature resistance of basalt fiber, so it shows excellent performance in many application fields.

[0003] When making the above-mentioned fiber composite reinforcement, the following production steps are generally included: Pretreatment: Pre-treat the steel, such as rust removal and cleaning, to ensure that the surface is clean. Impregnation: Immerse the basalt fiber in the resin matrix to fully infiltrate it. Winding: Wrap the impregnated basalt fiber around the steel to form a composite reinforcement structure. Curing: Curing the resin matrix by heating or other methods to form a strong composite material. Post-treatment: Surface treatment of the cured composite reinforcement, such as grinding, painting, cutting, etc.

[0004] Existing steel-basalt fiber composite bars have the following defects:

[0005] When basalt fiber is wound with steel, a unidirectional spiral winding method is usually adopted. The flexibility and bending resistance of the finished fiber composite reinforcement are significantly improved compared with the steel itself. However, the flexibility and bending resistance of the steel not covered by the fiber bundle in the fiber thread interval are poor, resulting in certain usage defects of the finished composite reinforcement.

[0006] Therefore, the present invention provides a new fiber composite bar and a processing device and a production process for producing the composite bar. Summary of the invention

[0007] The present invention aims at the deficiencies in the prior art and provides a fiber composite rib processing device and a production process thereof.

[0008] To solve the above technical problems, the present invention solves the problems through the following technical solutions: a fiber composite rib comprises a mandrel and a first fiber bundle and a second fiber bundle interlaced and wound on the surface of the mandrel;

[0009] The first fiber bundle is a basalt fiber bundle, and the second fiber bundle is a carbon fiber bundle;

[0010] The first fiber bundle and the second fiber bundle are staggered and spirally wound on the core rod, and an overlapping portion is formed at the staggered position;

[0011] The pitches of the helical winding of the first fiber bundle and the second fiber bundle are equal, and the distances between the overlapping parts formed after one turn of winding of the first fiber bundle and the second fiber bundle are equal.

[0012] In the above solution, preferably, the ratio of the bundle diameters of the first fiber bundle and the second fiber bundle is: 1:1.5 - 1:5.

[0013] In the above solution, preferably, the processing device for producing fiber composite bars includes a guiding seat for conveying a mandrel, a forming seat for molding the mandrel wound with fiber bundles, and a winding unit provided between the guiding seat and the forming seat;

[0014] The winding unit includes a first winding mechanism for winding the first fiber bundle on the mandrel and a second winding mechanism for winding the second fiber bundle, which is mirror - set with the first winding mechanism and has an opposite winding direction;

[0015] The winding speeds of the first winding mechanism and the second winding mechanism are the same;

[0016] The first winding mechanism and the second winding mechanism form overlapping parts after winding the corresponding fiber bundles on the mandrel.

[0017] In the above solution, preferably, the first winding mechanism includes a first winding seat and a first winding disk rotatably provided on the first winding seat, and a first storage disk for storing the first fiber bundle is provided on the first winding disk;

[0018] The second winding mechanism includes a second winding seat and a second winding disk rotatably provided on the second winding seat, and a second storage disk for storing the second fiber bundle is provided on the second winding disk.

[0019] In the above solution, preferably, driving motors are provided on both the first winding seat and the second winding seat, driving gears are provided on the driving motors, and transmission gears meshing with the corresponding driving gears are provided on the first winding disk and the second winding disk.

[0020] In the above solution, preferably, a first guiding frame for guiding during the winding of the first fiber bundle is provided on the first winding seat, and a second guiding frame for guiding during the winding of the second fiber bundle is provided on the second winding seat;

[0021] Injecting rods for injecting glue into the passing fiber bundles are provided on both the first guiding frame and the second guiding frame.

[0022] In the above solution, preferably, a stamping unit for fixing the overlapping part is provided on the first guiding frame, and the stamping unit includes a stamping push rod and a stamping head provided on the stamping push rod.

[0023] In the above solution, preferably, a stop unit cooperating with the first guide frame is provided on the second guide frame;

[0024] The stop unit includes a driving push rod and stop rods symmetrically arranged and connected thereto. The stop rods are slidably arranged through the first guide frame and the second guide frame;

[0025] An extrusion plate is slidably arranged on the stop rod. A contact switch cooperating with the extrusion plate is arranged on the stop rod, and the contact switch is electrically connected to the driving push rod.

[0026] In the above solution, preferably, an elastic resetting member is arranged between the extrusion plate and the stop rod.

[0027] In the above solution, preferably, a production process for producing fiber composite bars using a processing device for fiber composite bars is as follows:

[0028] S1: Insert the mandrel into the guide seat. At the same time, store the first fiber bundle and the second fiber bundle in the corresponding first storage disk and the second storage disk respectively, and fix the ends of the first fiber bundle and the second fiber bundle at the front end of the mandrel;

[0029] S2: The mandrel is horizontally transported. At the same time, the driving motor drives the corresponding first winding disk and the second winding disk to rotate. The first fiber bundle and the second fiber bundle are intertwined and wound around the mandrel to form an overlapping part;

[0030] S3: After the mandrel wound with fiber bundles enters the forming seat, it is formed and cured to form fiber composite bars; and is segmented and cut in the subsequent cutting device.

[0031] The beneficial effects of the present invention are: The present invention provides a fiber composite bar, a processing device and a production process for producing the composite bar. The strength of the fiber composite bar is improved by intertwined winding. At the same time, carbon fiber bundles and basalt fiber bundles with different diameters are used for winding, so that while reducing the weight of the composite bar, its strength is maintained;

[0032] In addition, by arranging a corresponding processing device to perform intertwined winding of fibers on the mandrel, the production efficiency of the fiber composite bar is improved, and at the same time, the accuracy of fiber winding is improved, and the overall quality of the composite bar is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional structural schematic diagram of the fiber composite bar of the present invention.

[0034] Figure 2 It is a top-view structural schematic diagram of the fiber composite bar of the present invention.

[0035] Figure 3 It is a three-dimensional structural schematic diagram of the processing device for the fiber composite bar of the present invention.

[0036] Figure 4 For the present invention Figure 3 is a schematic diagram of the partially enlarged structure at position A in the present invention.

[0037] Figure 5 is a schematic cross-sectional view of the winding mechanism of the present invention.

[0038] Figure 6 is a schematic three-dimensional structure diagram of the winding mechanism of the present invention.

[0039] Figure 7 is a schematic three-dimensional structure diagram of the stop rod of the present invention. Specific embodiments

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0041] Example 1: Refer to Figures 1 - 2 .

[0042] The fiber composite bar includes a mandrel 1 and a first fiber bundle 101 and a second fiber bundle 102 that are intertwined and wound around the surface of the mandrel 1; the mandrel 1 is a steel bar, and its cross-sectional area preferably has a cylindrical shape. The surface of the mandrel 1 is cleaned before winding the fibers so that its surface does not have impurities;

[0043] The first fiber bundle 101 is made of a basalt fiber bundle, and the second fiber bundle 102 is made of a carbon fiber bundle. Carbon fiber has higher strength and a lower density than basalt fiber. Therefore, in order to reduce the outer dimensions of the formed fiber composite bar, the bundle diameter ratio of the first fiber bundle 101 to the second fiber bundle 102 is: 1:1.5 - 1:5, that is, the diameter of the first fiber bundle 101 is greater than the diameter of the second fiber bundle 102, thereby improving the overall strength of the fiber composite bar while reducing its impact on the outer dimensions.

[0044] The first fiber bundle 101 and the second fiber bundle 102 are intertwined and helically wound around the mandrel 1, and an overlapping portion 101 is formed at the intersection, that is, the overlapping portion 101 is formed by the superposition of the first fiber bundle 101 and the second fiber bundle 102 when they intersect; the pitch of the helical winding of the first fiber bundle 101 and the second fiber bundle 102 is equal, so that the distance between the overlapping portions 103 formed after the first fiber bundle 101 and the second fiber bundle 102 are wound synchronously for one week is equal, ensuring the same overall strength uniformity of the fiber composite bar formed after the first fiber bundle 101 and the second fiber bundle 102 are intertwined and wound.

[0045] The first fiber bundle 101 and the second fiber bundle 102 are infiltrated with resin before winding, and then the infiltrated fibers are intertwined and wound along the axial direction of the mandrel 1. The pitch of the helical winding can be adjusted to adapt to the diameter and strength requirements of different mandrels.

[0046] Embodiment 2: This embodiment is a processing device for producing the fiber composite bars in Embodiment 1. As Figures 3 - 7 shown, specifically, the processing device includes a guiding seat 2 for conveying the mandrel 1, a forming seat 3 for molding the mandrel 1 around which the fiber bundle is wound, and a winding unit 4 provided between the guiding seat 2 and the forming seat 3; the mandrel 1 is arranged through the guiding seat 2, and the mandrel 1 is axially displaced relative to the guiding seat 2 at a uniform speed by a traction mechanism or a propulsion mechanism.

[0047] After the mandrel 1 passes through the guiding seat 2, the end of the displacement end of the mandrel 1 enters the winding unit 4, and after passing through the winding unit 4, the first fiber bundle 101 and the second fiber bundle 102 are intertwinedly wound around the mandrel 1. Subsequently, the mandrel 1 around which the fiber bundle is wound enters the forming seat 3 again, so that the mandrel 1 and the fiber bundle are formed into a fiber composite bar; a mechanism for coating a resin coating can be provided between the winding unit 4 and the forming seat 3. This is a prior art and will not be elaborated here; after passing through this mechanism, the resin is coated on the surface of the mandrel 1 that has completed the winding, so that the mandrel 1 is firmly combined with the first fiber bundle 101 and the second fiber bundle 102 after forming.

[0048] The winding unit 4 includes a first winding mechanism 401 for winding the first fiber bundle 101 on the mandrel 1 and a second winding mechanism 402 for winding the second fiber bundle 102 and mirror - set with the first winding mechanism 401 and having the opposite winding direction. As Figures 3 - 4 shown, the second winding mechanism 402 is arranged on the side close to the guiding seat 2, and the first winding mechanism 401 is arranged on the side close to the forming seat 3, and the two winding mechanisms are mirror - set.

[0049] In this embodiment, when the first winding mechanism 401 winds, the first fiber bundle 101 is wound clockwise in the Figure 3 shown direction, while when the second winding mechanism 402 winds, the second fiber bundle 102 is wound counterclockwise in the Figure 3 shown direction, so as to realize the spiral intertwined winding of the first fiber bundle 101 and the second fiber bundle 102, and a superposition part 103 is formed at the fiber intersection after winding.

[0050] The first winding mechanism 401 includes a first winding seat 501 and a first winding disk 502 rotatably arranged on the first winding seat 501. A first storage disk 503 for storing the first fiber bundle 101 is arranged on the first winding disk 502; that is, the coiled first fiber bundle 101 is stored on the first storage disk 503, and a guiding rod is arranged on the first winding disk 502 to guide the first fiber bundle 101. When winding, one end of the first fiber bundle 101 is fixed on the mandrel 1, and then, with the axial displacement of the mandrel 1 and the rotation of the first winding disk 502, the spiral winding of the first fiber bundle 101 on the mandrel 1 is realized.

[0051] Similarly, the second winding mechanism 402 includes a second winding base 601 and a second winding disc 602 rotatably provided on the second winding base 601. A second storage disc 603 for storing the second fiber bundle 102 is provided on the second winding disc 602. That is, the coiled second fiber bundle 102 is stored on the second storage disc 603, and a guide rod is provided on the second winding disc 602 to guide the second fiber bundle 102. During winding, one end of the second fiber bundle 102 is fixed on the mandrel 1, and then, with the axial displacement of the mandrel 1 and the rotation of the second winding disc 602, the second fiber bundle 102 is helically wound on the mandrel 1. Since the rotation direction of the second winding disc 602 is opposite to that of the first winding disc 602, the winding direction of the second fiber bundle 102 is opposite to that of the first fiber bundle 101, realizing staggered winding.

[0052] Drive motors 7 are provided on both the first winding base 501 and the second winding base 601. Drive gears 701 are provided on the drive motors 7. Transmission gears 702 meshing with the corresponding drive gears 701 are provided on the first winding disc 502 and the second winding disc 602. That is, the drive motor 7 drives the corresponding transmission gear 702 to rotate through the drive gear 701, thereby driving the corresponding first winding disc 502 and second winding disc 602 to rotate. The first winding disc 502 and the second winding disc 602 are integrally formed with the transmission gear 702. The first winding disc 502 is rotatably provided on the first winding base 501, and a through hole for the mandrel 1 to pass through is provided in the middle thereof. The second winding disc 602 is rotatably provided on the second winding base 601, and a through hole for the mandrel 1 to pass through is also provided in the middle thereof.

[0053] A first guide frame 504 for guiding during the winding of the first fiber bundle 101 is provided on the first winding base 501, and a second guide frame 604 for guiding during the winding of the second fiber bundle 102 is provided on the second winding base 601. As Figure 5 shown, a winding channel is formed between the first guide frame 504 and the second guide frame 604 for the first fiber bundle 101 and the second fiber bundle 102 to pass through. Glue injection rods 8 for injecting glue into the passing fiber bundles are horizontally provided on the walls of the first guide frame 504 and the second guide frame 604 near the mandrel 1. The glue injection rods 8 are symmetrically arranged. The injected glue preferably uses semi-cured resin, and the resin temperature is set at 50 - 100°. The glue injection rods 8 can be connected to a pump body or a syringe to quantify the glue injected by the glue injection rods 8, and specific adjustment can be made according to the resin composition, so as to ensure that it has both a certain fluidity and an adhesive effect.

[0054] The first guiding frame 504 is connected to the first winding base 501 after passing through the first winding disk 502 via the first extension arm, and the second guiding frame 604 is connected to the second winding base 601 after passing through the second winding disk 602 via the second extension arm, so that the first guiding frame 504 and the second guiding frame 604 are fixed relative to the first winding base 501 and the second winding base 601.

[0055] A stamping unit for fixing the overlapping part 103 is provided on the first extension arm of the first guiding frame 504. The stamping unit includes a stamping push rod 9 and a stamping head 10 provided on the stamping push rod 9. The stamping push rod 9 is an air-driven push rod or an electric push rod. When the overlapping part 103 passes through the stamping head 10, the stamping head 10 slides down to stamp the overlapping part 103. At this time, since the first fiber bundle 101 and the second fiber bundle 102 are added with semi-cured resin after passing through the winding channel formed by the first guiding frame 504 and the second guiding frame 604, then under the stamping of the stamping head 10, the overlapping part 103 and the mandrel 1 are fixed by stamping with the semi-cured resin to ensure that the distance between each adjacent overlapping part 103 is the same.

[0056] A stop unit matching with the first guiding frame 504 is provided on the second guiding frame 604; the stop unit includes a driving push rod 11 and stop rods 12 connected thereto and symmetrically arranged. The stop rods 12 are slidably arranged through the first guiding frame 504 and the second guiding frame 604; an extrusion plate 13 is slidably arranged on the stop rods 12. The extrusion plate 13 is slidably arranged on the outer wall of the stop rods 12 through a sliding rod, as Figure 7 shown. An elastic reset member is provided between the extrusion plate 13 and the stop rods 12. The elastic reset member preferably adopts a spring; a contact switch 14 matching with the extrusion plate 13 is provided on the stop rods 12. When the extrusion plate 13 is extruded to compress the spring and then contacts the contact switch 14, the switch is triggered; the contact switch 14 is electrically connected to the driving push rod 11. After the switch is triggered, the driving push rod 11 retracts, so that the stop rods 12 slide leftward along the Figure 5 shown direction. At this time, the winding channel is opened to facilitate the passage of the first fiber bundle 101 and the second fiber bundle 102.

[0057] The contact switches 14 on the stop rods 12 on both sides are connected in series with the driving push rod 11. When the first fiber bundle 101 extrudes the extrusion plate 13 on one side to trigger the contact switch 14 on this side, it is necessary to wait for the second fiber bundle 102 to trigger the contact switch 14 on the other side before the stop rods 12 are synchronously driven by the driving push rod 11. Then the winding channel is opened, and the first fiber bundle 101 and the second fiber bundle 102 enter the winding channel synchronously and are adhered by the resin. Then they simultaneously form an overlapping part 103 on the mandrel 1, and then the overlapping part 103 is fixed by stamping with the stamping head 10.

[0058] In this embodiment, the driving push rod 11, the stamping push rod 9 and the driving motor 7 are all controlled by a PLC controller, which is convenient for adjusting the cooperation degree between various components and connecting them to the existing forming mechanism, resin coating mechanism or traction mechanism to complete the overall automatic operation.

[0059] Embodiment 3: On the basis of Embodiment 1 and Embodiment 2, this embodiment adopts the fiber composite bar processing device of Embodiment 2 to process the fiber composite bar in Embodiment 1. Specifically, the production process is as follows:

[0060] S1: Insert the mandrel 1 into the guide seat 2. At the same time, store the first fiber bundle 101 and the second fiber bundle 102 in the corresponding first storage disk 503 and second storage disk 603, and fix the ends of the first fiber bundle 101 and the second fiber bundle 102 at the front end of the mandrel 1.

[0061] S2: The mandrel 1 is horizontally transported. At the same time, the driving motor 7 drives the corresponding first winding disk 502 and second winding disk 602 to rotate. The first fiber bundle 101 and the second fiber bundle 102 are intertwined around the mandrel 1 to form an overlapping part 103.

[0062] S3: After the first fiber bundle 101 and the second fiber bundle 102 enter the winding channel at the same time, they adhere to the resin on the glue injection rod 8, and then form an overlapping part 103 adhered with resin.

[0063] S4: The overlapping part 103 adhered with resin is stamped when passing through the stamping head 10, so that the overlapping part 103 is fixed on the surface of the mandrel 1, so that the distance between adjacent overlapping parts 103 is the same, so that the overall strength uniformity of the formed fiber composite bar is better.

[0064] S5: The mandrel 1 wound with fiber bundles is formed and cured in the forming seat 3 to form a fiber composite bar; and is segmented and cut in the subsequent cutting device.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fiber composite reinforcement processing device, characterized in that: It comprises a guide seat (2) for conveying a core rod (1), a molding seat (3) for molding the core rod (1) for winding a fiber bundle, and a winding unit (4) arranged between the guide seat (2) and the molding seat (3); The winding unit (4) comprises a first winding mechanism (401) for winding a first fiber bundle (101) on a core rod (1), and a second winding mechanism (402) for winding a second fiber bundle (102) and arranged in a mirror image with the first winding mechanism (401) and with a winding direction opposite to that of the first winding mechanism (401); The first winding mechanism (401) and the second winding mechanism (402) have the same winding speed; The first winding mechanism (401) and the second winding mechanism (402) wind corresponding fiber bundles on the core rod (1) to form an overlapping portion (103); The first winding mechanism (401) comprises a first winding seat (501) and a first winding disc (502) rotatably arranged on the first winding seat (501), and the first winding disc (502) is provided with a first storage disc (503) for storing the first fiber bundle (101); The second winding mechanism (402) comprises a second winding seat (601) and a second winding disc (602) rotatably arranged on the second winding seat (601), and the second winding disc (602) is provided with a second storage disc (603) for storing the second fiber bundle (102); The first winding seat (501) is provided with a first guide frame (504) for guiding when the first fiber bundle (101) is wound, and the second winding seat (601) is provided with a second guide frame (604) for guiding when the second fiber bundle (102) is wound; The first guide frame (504) and the second guide frame (604) are both provided with a glue injection rod (8) for injecting glue into the fiber bundle passing through; The first guide frame (504) is provided with a punching unit for fixing the overlapping portion (103), the punching unit comprising a punching push rod (9) and a punching head (10) provided on the punching push rod (9); The second guide frame (604) is provided with a stop unit that matches the first guide frame (504); The stop unit comprises a driving push rod (11) and a stop rod (12) connected thereto and symmetrically arranged, wherein the stop rod (12) is slidably arranged to penetrate the first guide frame (504) and the second guide frame (604); A pressing plate (13) is slidably provided on the stop rod (12), and a contact switch (14) matching with the pressing plate (13) is provided on the stop rod (12), and the contact switch (14) is electrically connected to the driving push rod (11).

2. The fiber composite reinforcement processing device according to claim 1, characterized in that: The first winding disc (502) and the second winding disc (602) are both provided with a driving motor (7), the driving motor (7) is provided with a driving gear (701), and the first winding seat (501) and the second winding seat (601) are provided with a transmission gear (702) meshing with the corresponding driving gear (701).

3. The fiber composite reinforcement processing device according to claim 1, characterized in that: An elastic reset member is provided between the extrusion plate (13) and the stop rod (12).

4. A process for producing fiber composite bars using the fiber composite bar processing device according to claim 1, characterized in that: The process is as follows: S1: inserting the core rod (1) into the guide seat (2), storing the first fiber bundle (101) and the second fiber bundle (102) in the corresponding first storage tray (503) and the second storage tray (603), and fixing the ends of the first fiber bundle (101) and the second fiber bundle (102) to the front end of the core rod (1); S2: the core rod (1) is transported laterally, and at the same time, the driving motor (7) drives the corresponding first winding disk (502) and the second winding disk (602) to rotate, so that the first fiber bundle (101) and the second fiber bundle (102) are interlaced and wound on the core rod (1) to form an overlapping portion (103); S3: The core rod (1) wound with the fiber bundle enters the forming seat (3) and is formed and solidified to form a fiber composite rib; and is cut into sections in a subsequent cutting device.

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