Fiber composite rib, processing device and production process thereof

Abstract

The invention discloses a fiber composite rib, a processing device and a production process thereof. The fiber composite rib comprises a core rod, a first fiber bundle and a second fiber bundle, 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 spirally wound on the core rod in a staggered manner, and an overlapping part is formed at the staggered part; the spiral winding screw pitches of the first fiber bundle and the second fiber bundle are equal, and the distances between overlapping parts formed after the first fiber bundle and the second fiber bundle are wound for one circle are equal; according to the fiber composite rib and the processing device and the production process for producing the fiber composite rib, the strength of the fiber composite rib is improved through staggered winding, meanwhile, the carbon fiber bundles and the basalt fiber bundles which are different in diameter are adopted for winding, and the strength of the fiber composite rib is maintained while the weight of the fiber composite rib is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of fiber composite reinforcement and production equipment thereof, in particular to fiber composite reinforcement, processing equipment and production technology 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: 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.

[0005] 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

[0006] The present invention aims at the deficiencies in the prior art and provides a fiber composite reinforcement, a processing device and a production process thereof.

[0007] 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; 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 staggered and spirally wound on the core rod, and an overlapping portion is formed at the staggered position; The pitches of the spiral windings of the first fiber bundle and the second fiber bundle are equal, and the spacings between the overlapping parts formed after the first fiber bundle and the second fiber bundle are wound once are equal.

[0008] In the above solution, preferably, the bundle diameter ratio of the first fiber bundle to the second fiber bundle is: 1:1.5-1:5.

[0009] In the above scheme, preferably, the processing device for producing fiber composite tendons includes a guide seat for conveying a mandrel, a molding seat for molding the mandrel wound with a fiber bundle, and a winding unit disposed between the guide seat and the molding seat; The winding unit comprises a first winding mechanism for winding the first fiber bundle on the core rod and a second winding mechanism for winding the second fiber bundle and arranged in a mirror image with the first winding mechanism and in an opposite winding direction; The winding speed of the first winding mechanism is the same as that of the second winding mechanism; The first winding mechanism and the second winding mechanism form an overlapping portion after winding corresponding fiber bundles on the core rod.

[0010] In the above scheme, preferably, the first winding mechanism comprises a first winding seat and a first winding disk rotatably arranged on the first winding seat, and the first winding disk is provided with a first storage disk for storing the first fiber bundle; The second winding mechanism comprises a second winding seat and a second winding disk rotatably arranged on the second winding seat, and the second winding disk is provided with a second storage disk for storing the second fiber bundle.

[0011] In the above scheme, preferably, the first winding seat and the second winding seat are both provided with a driving motor, the driving motor is provided with a driving gear, and the first winding disk and the second winding disk are provided with a transmission gear meshing with the corresponding driving gear.

[0012] In the above scheme, preferably, the first winding seat is provided with a first guide frame for guiding the first fiber bundle when it is wound, and the second winding seat is provided with a second guide frame for guiding the second fiber bundle when it is wound; The first guide frame and the second guide frame are both provided with a glue injection rod for injecting glue into the passing fiber bundle.

[0013] In the above scheme, preferably, a stamping unit for fixing the overlapping portion is provided on the first guide frame, and the stamping unit includes a stamping push rod and a stamping head provided on the stamping push rod.

[0014] In the above solution, preferably, the second guide frame is provided with a stop unit matched with the first guide frame; The stop unit comprises a driving push rod and a stop rod connected thereto and symmetrically arranged, wherein the stop rod slides through the first guide frame and the second guide frame; A pressing plate is slidably arranged on the stop rod, and a contact switch matched with the pressing plate is arranged on the stop rod, and the contact switch is electrically connected with the driving push rod.

[0015] In the above solution, preferably, an elastic reset member is provided between the extrusion plate and the stop rod.

[0016] In the above scheme, preferably, the production process of producing fiber composite reinforcement using a fiber composite reinforcement processing device is as follows: S1: inserting the mandrel into the guide seat, storing the first fiber bundle and the second fiber bundle in the corresponding first storage tray and the second storage tray, and fixing the ends of the first fiber bundle and the second fiber bundle at the front end of the mandrel; S2: The mandrel is transported transversely, and at the same time, the driving motor drives the corresponding first winding disk and the second winding disk to rotate, and the first fiber bundle and the second fiber bundle are alternately wound on the mandrel to form an overlapping portion; S3: The core rod wound with the fiber bundle enters the forming seat and is formed and solidified to form a fiber composite rib; and is cut into sections in the subsequent cutting device.

[0017] The beneficial effects of the present invention are as follows: the present invention provides a fiber composite bar and a processing device and a production process for producing the composite bar, wherein the composite bar improves the strength of the fiber composite bar by staggered winding, and at the same time, carbon fiber bundles and basalt fiber bundles with different diameters are used for winding, so that the composite bar can reduce its weight while maintaining its strength; In addition, by setting up corresponding processing equipment to interlace the fibers on the core rod, the production efficiency of the fiber composite reinforcement is improved, and the accuracy of the fiber winding is also improved, thereby improving the overall quality of the composite reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the fiber composite reinforcement of the present invention.

[0019] Figure 2 It is a schematic diagram of the top view structure of the fiber composite reinforcement of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the fiber composite rib processing device of the present invention.

[0021] Figure 4 For the present invention Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0022] Figure 5 It is a schematic cross-sectional view of the winding mechanism of the present invention.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the winding mechanism of the present invention.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the stop rod of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Example 1

[0026] See also Figure 1-Figure 2 , the fiber composite rib comprises a core rod 1 and a first fiber bundle 101 and a second fiber bundle 102 interlacedly wound on the surface of the core rod 1; the core rod 1 is a steel rod, and its cross-sectional area is preferably cylindrical. The surface of the core rod 1 is cleaned before winding the fiber so that the surface is free of impurities; The first fiber bundle 101 is made of basalt fiber bundles, and the second fiber bundle 102 is made of carbon fiber bundles. Carbon fiber has higher strength and lighter density than basalt fiber. Therefore, in order to reduce the external dimensions of the formed fiber composite bar, the bundle diameter ratio of the first fiber bundle 101 and 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 external dimensions.

[0027] The first fiber bundle 101 and the second fiber bundle 102 are staggered and spirally wound on the core rod 1, and an overlapping portion 101 is formed at the intersection, that is, the overlapping portion 101 is formed by superimposing the first fiber bundle 101 and the second fiber bundle 102 when they are staggered; the pitches of the spiral windings of the first fiber bundle 101 and the second fiber bundle 102 are equal, so that the spacing between the overlapping portions 103 formed after the first fiber bundle 101 and the second fiber bundle 102 are synchronously wound for one circle is equal, which ensures that the overall strength uniformity of the fiber composite reinforcement formed by the first fiber bundle 101 and the second fiber bundle 102 after the staggered winding is the same.

[0028] The first fiber bundle 101 and the second fiber bundle 102 are impregnated with resin before winding, and then the impregnated fibers are staggered and wound along the axial direction of the core rod 1. The pitch of the spiral winding can be adjusted to adapt to the diameter and strength requirements of different core rods.

[0029] like Figure 3-Figure 7 As shown, it is a processing device for producing fiber composite tendons. Specifically, the processing device includes a guide seat 2 for conveying a core rod 1, a molding seat 3 for molding the core rod 1 wound with a fiber bundle, and a winding unit 4 arranged between the guide seat 2 and the molding seat 3; the core rod 1 is arranged through the guide seat 2, and the core rod 1 is uniformly displaced axially relative to the guide seat 2 by a traction mechanism or a propulsion mechanism.

[0030] After passing through the guide seat 2, the end of the displacement end of the core rod 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 interlaced. Then, the core rod 1 that has been wound with the fiber bundle enters the forming seat 3 again, so that the core rod 1 and the fiber bundle are formed into fiber composite ribs; a mechanism for coating resin coating can be set between the winding unit 4 and the forming seat 3, which is a prior art and will not be described in detail here; after passing through the mechanism, the resin is coated on the surface of the core rod 1 that has been wound, so that the core rod 1 is firmly combined with the first fiber bundle 101 and the second fiber bundle 102 after molding.

[0031] The winding unit 4 includes a first winding mechanism 401 for winding the first fiber bundle 101 on the core rod 1 and a second winding mechanism 402 for winding the second fiber bundle 102 and arranged in a mirror image with the first winding mechanism 401 and in an opposite winding direction. Figure 3-Figure 4 As shown, the second winding mechanism 402 is arranged on a side close to the guide seat 2, and the first winding mechanism 401 is arranged on a side close to the forming seat 3, and the two sets of winding mechanisms are arranged in a mirror image.

[0032] In this embodiment, the first winding mechanism 401 presses the first fiber bundle 101 into the Figure 3 The second fiber bundle 102 is wound clockwise in the direction shown in FIG. Figure 3 The fiber bundles 101 and 102 are wound in a counterclockwise direction as shown, so as to realize the spiral interlaced winding of the first fiber bundle 101 and the second fiber bundle 102, and form an overlapped portion 103 at the interlaced position of the wound fibers.

[0033] 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, and the first winding disk 502 is provided with a first storage disk 503 for storing the first fiber bundle 101; that is, the first storage disk 503 stores the coiled first fiber bundle 101, and the first winding disk 502 is provided with a guide rod for guiding the first fiber bundle 101. During winding, one end of the first fiber bundle 101 is fixed on the core rod 1, and then the core rod 1 is displaced axially to cooperate with the rotation of the first winding disk 502 to realize the spiral winding of the first fiber bundle 101 on the core rod 1.

[0034] Similarly, the second winding mechanism 402 includes a second winding seat 601 and a second winding disk 602 rotatably disposed on the second winding seat 601, and the second winding disk 602 is provided with a second storage disk 603 for storing the second fiber bundle 102; that is, the coiled second fiber bundle 102 is stored on the second storage disk 603, and the second winding disk 602 is provided with a guide rod for guiding the second fiber bundle 102. During winding, one end of the second fiber bundle 102 is fixed on the core rod 1, and then the core rod 1 is axially displaced to cooperate with the rotation of the second winding disk 602 to realize the spiral winding of the second fiber bundle 102 on the core rod 1. Because the rotation direction of the second winding disk 602 is opposite to that of the first winding disk 602, the winding direction of the second fiber bundle 102 is opposite to that of the first fiber bundle 101, thereby realizing staggered winding.

[0035] The first winding seat 501 and the second winding seat 601 are both provided with a driving motor 7, and the driving motor 7 is provided with a driving gear 701. The first winding disc 502 and the second winding disc 602 are provided with a transmission gear 702 meshing with the corresponding driving gear 701, that is, the driving motor 7 drives the corresponding transmission gear 702 to rotate through the driving gear 701, thereby driving the corresponding first winding disc 502 and the second winding disc 602 to rotate; the first winding disc 502 and the second winding disc 602 are both integrally formed with the transmission gear 702, and the first winding disc 502 is rotatably arranged on the first winding seat 501, and a through hole is provided in the middle thereof for the core rod 1 to pass through; the second winding disc 602 is rotatably arranged on the second winding seat 601, and a through hole is also provided in the middle thereof for the core rod 1 to pass through.

[0036] The first winding seat 501 is provided with a first guide frame 504 for guiding the first fiber bundle 101 when winding, and the second winding seat 601 is provided with a second guide frame 604 for guiding the second fiber bundle 102 when winding. Figure 5 As 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, and a glue injection rod 8 for injecting glue into the passing fiber bundle is laterally provided on the wall of the first guide frame 504 and the second guide frame 604 near the core rod 1. The glue injection rod 8 is symmetrically arranged, and the injected glue preferably uses semi-cured resin. The resin temperature is set at 50-100°. The glue injection rod 8 can be connected to a pump body or a syringe so that the glue injected by the glue injection rod 8 is quantified, and the specific amount can be adaptively adjusted according to the resin composition, so as to ensure that it has both a certain fluidity and an adhesion effect.

[0037] The first guide frame 504 is connected to the first winding seat 501 after passing through the first extension arm to set the first winding disk 502, and the second guide frame 604 is connected to the second winding seat 601 after passing through the second extension arm to set the second winding disk 602, so that the first guide frame 504 and the second guide frame 604 are fixed relative to the first winding seat 501 and the second winding seat 601.

[0038] A punching unit for fixing the overlapping portion 103 is provided on the first extension arm of the first guide frame 504, and the punching unit includes a punching push rod 9 and a punching head 10 provided on the punching push rod 9. The punching push rod 9 adopts a pneumatic push rod or an electric push rod. When the overlapping portion 103 passes through the punching head 10, the punching head 10 slides down to punch the overlapping portion 103. At this time, semi-cured resin is added to the first fiber bundle 101 and the second fiber bundle 102 after passing through the winding channel formed by the first guide frame 504 and the second guide frame 604. Subsequently, under the punching of the punching head 10, the overlapping portion 103 and the core rod 1 are fixed by punching with the semi-cured resin to ensure that the spacing between each adjacent overlapping portion 103 is the same.

[0039] The second guide frame 604 is provided with a stop unit matched with the first guide frame 504; the stop unit includes a driving push rod 11 and a stop rod 12 connected thereto and symmetrically arranged, the stop rod 12 is slidably arranged through the first guide frame 504 and the second guide frame 604; an extrusion plate 13 is slidably arranged on the stop rod 12, and the extrusion plate 13 is slidably arranged on the outer side of the wall of the stop rod 12 through a sliding rod, such as Figure 7 As shown, an elastic reset member is provided between the extrusion plate 13 and the stop rod 12, and the elastic reset member is preferably a spring; a contact switch 14 is provided on the stop rod 12 to match the extrusion plate 13, and when the extrusion plate 13 is squeezed, the spring is compressed and contacts the contact switch 14, thereby triggering the switch; the contact switch 14 is electrically connected to the driving push rod 11, and when the switch is triggered, the driving push rod 11 retracts, thereby moving the stop rod 12 along the Figure 5 The fiber bundle 102 slides to the left in the direction shown, and the winding channel is opened to facilitate the passage of the first fiber bundle 101 and the second fiber bundle 102.

[0040] The contact switches 14 on the stop rods 12 on both sides are arranged in series with the driving push rod 11. When the first fiber bundle 101 squeezes the extrusion plate 13 on one side and triggers the contact switch 14 on that side, it is necessary to wait for the second fiber bundle 102 to trigger the contact switch 14 on the other side so that the stop rod 12 is synchronously driven by the driving push rod 11, and then the winding channel is opened. The first fiber bundle 101 and the second fiber bundle 102 enter the winding channel synchronously and are adhered by resin, and then contact on the core rod 1 at the same time to form an overlapping portion 103, and then the overlapping portion 103 is fixed by stamping of the punch head 10.

[0041] 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 degree of fit between the components and connecting them with the existing molding mechanism, resin coating mechanism or traction mechanism to complete the overall automated operation.

[0042] Embodiment 2: This embodiment is a further design based on the embodiment 1, and adopts a fiber composite rib processing device to process a production process of a fiber composite rib. Specifically, the production process is as follows: S1: insert the mandrel 1 into the guide seat 2, store 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 fix the ends of the first fiber bundle 101 and the second fiber bundle 102 to the front end of the mandrel 1; S2: The core rod 1 is transported horizontally, and the driving motor 7 drives the corresponding first winding disk 502 and the second winding disk 602 to rotate, and the first fiber bundle 101 and the second fiber bundle 102 are alternately wound on the core rod 1 to form an overlapping portion 103; 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 injection rod 8, and then form an overlapping portion 103 adhered by the resin; S4: The overlapping portion 103 adhered by the resin is punched when passing through the punch head 10, so that the overlapping portion 103 is fixed to the surface of the core rod 1, so that the spacing between adjacent overlapping portions 103 is the same, so that the overall strength uniformity of the formed fiber composite rib is better; S5: 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 the subsequent cutting device.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Fiber composite reinforcement, characterized in that: It comprises a core rod (1) and a first fiber bundle (101) and a second fiber bundle (102) interlaced and wound on the surface of the core rod (1); The first fiber bundle (101) is a basalt fiber bundle, and the second fiber bundle (102) is a carbon fiber bundle; The first fiber bundle (101) and the second fiber bundle (102) are interlaced and spirally wound on the core rod (1), and an overlapping portion (103) is formed at the interlaced portion; The pitches of the spiral windings of the first fiber bundle (101) and the second fiber bundle (102) are equal, and the spacings between the overlapping parts (103) formed after the first fiber bundle (101) and the second fiber bundle (102) are wound around one circle are equal.

2. The fiber composite reinforcement according to claim 1, characterized in that: The bundle diameter ratio between the first fiber bundle (101) and the second fiber bundle (102) is 1:1.5-1:

5.

3. A processing device for producing the fiber composite reinforcement according to claim 1, 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).

4. The fiber composite reinforcement processing device according to claim 3, characterized in that: 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).

5. The fiber composite reinforcement processing device according to claim 4, 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).

6. The fiber composite reinforcement processing device according to claim 4, characterized in that: 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 bundles passing through.

7. The fiber composite reinforcement processing device according to claim 6, characterized in that: A punching unit for fixing the overlapping portion (103) is provided on the first guide frame (504), and the punching unit comprises a punching push rod (9) and a punching head (10) provided on the punching push rod (9).

8. The fiber composite reinforcement processing device according to claim 6, characterized in that: 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).

9. The fiber composite reinforcement processing device according to claim 8, characterized in that: An elastic reset member is provided between the extrusion plate (13) and the stop rod (12).

10. A process for producing fiber composite bars using the fiber composite bar processing device according to claim 4, 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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