A FRP tendon grooving device

Abstract

The utility model discloses a kind of FRP reinforcement material groove cutting device, including abutment, support assembly for being inserted by FRP reinforcement material is provided in one end of abutment, sliding clamping device for driving FRP reinforcement material rotation and linear displacement along the guiding direction of support assembly is provided on the abutment of one side of support assembly;Groove cutting assembly for the groove cutting of FRP reinforcement material is provided on the abutment of the other side of support assembly;Controller is also erected on the front side of abutment, controller and power piece in support assembly, sliding clamping device and groove cutting assembly are electrically connected.The device realizes the accurate groove cutting of FRP reinforcement material, ensures the continuous flat of FRP reinforcement material core fiber, effectively solve the performance reduction problem caused by fiber bending in FRP reinforcement material production process.

Description

Technical Field

[0001] This utility model relates to a groove-cutting device for FRP (fiberglass reinforced plastic) reinforcing bars, belonging to the field of FRP reinforcing bar processing technology. Background Technology

[0002] Traditional FRP reinforcing bars are produced by filament winding and pultrusion molding. FRP filament winding and pultrusion molding equipment includes... Figure 1 As shown, the roving on the yarn rack is drawn by the traction device and impregnated in a resin-containing impregnation tank. Then, the resin-impregnated fibers are bundled together by a preforming frame. Before entering the molding die and curing device, a winding device winds the resin-impregnated fiber bundles. The fiber bundles and resin are cured at high temperature in the curing device to form cylindrical reinforcing bars. A unwinding device is connected to the outlet of the curing device. The unwinding device unwinds the winding around the cylindrical reinforcing bars, creating rib grooves around the reinforcing bars. The traction device pulls the reinforcing bars forward at a uniform speed. According to the set dimensions, the cutting device cuts the reinforcing bars to obtain the required FRP reinforcing bars. Although this traditional winding and pultrusion method for forming ribs is simple and effective, the application of external force during the winding and extrusion process causes the internal fibers to bend and wrinkle, thus changing the direction of the stressed fibers and affecting the stress performance of the reinforcing bars. Utility Model Content

[0003] The purpose of this invention is to provide an FRP rib grooving device, which enables precise grooving of FRP ribs, ensures the continuous straightness of the core fibers of FRP ribs, and effectively solves the problem of performance reduction caused by fiber bending during the production process of FRP ribs.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An FRP (fiberglass reinforced plastic) grooving device includes a base, a support assembly for FRP ribs to pass through at one end of the base, a sliding clamping device for rotating the FRP ribs and linearly displacing them along the guide direction of the support assembly on the base on one side of the support assembly, a grooving assembly for grooving the FRP ribs on the base on the other side of the support assembly, and a controller mounted on the front side of the base, the controller being electrically connected to the power components in the support assembly, the sliding clamping device, and the grooving assembly.

[0005] Preferably, the sliding clamping device includes two first guide rails that extend along the length of the base and are symmetrically arranged, a slide table that is slidably arranged on the two first guide rails, a housing that is mounted on the slide table, a machine shaft that extends along the length of the slide table and passes through the housing that is rotatably installed inside the housing, a chuck that is mounted at one end of the machine shaft near the support assembly, a first pulley that is mounted on the shaft body at the other end of the machine shaft, a rotary motor that is mounted on the slide table located on one side of the first pulley, a second pulley that corresponds to the first pulley that is provided at the end of the rotary motor, and a transmission belt that is provided outside the first pulley and the second pulley; A toothed plate is installed on the first guide rail located on the rear side of the base. The toothed plate has toothed grooves. A slide extends above the toothed plate and a drive motor with an actuation shaft that passes vertically downward through the slide is installed on the slide. The end of the actuation shaft of the drive motor is equipped with a gear that meshes with the toothed grooves on the toothed plate.

[0006] Preferably, the support assembly includes a base plate, a guide plate is vertically mounted on the side of the base plate away from the chuck, the top of the guide plate extends toward the rear side of the base and the end is provided with a guide hole coaxial with the machine shaft, a fixing plate parallel to the guide plate is mounted on the side of the base plate near the chuck, and a clamp for supporting the FRP reinforcement is obliquely mounted on the side of the fixing plate near the guide plate.

[0007] Preferably, the grooving assembly includes a bracket extending downward at the top toward the front side of the base, two second guide rails symmetrically arranged on the bracket along the length of the bracket, a mounting platform slidably arranged on the two second guide rails, and a telescopic device connected to the mounting platform and used to drive the mounting platform to move back and forth linearly along the second guide rails at the top of the bracket. A servo motor is mounted on the mounting platform. At the end of the servo motor is a grooved disc that corresponds to the gap between the guide plate and the fixture and is arranged parallel to the guide plate and the fixture.

[0008] The beneficial effects of this utility model are as follows: This grooving device enables precise grooving of FRP (fiberglass reinforced plastic) reinforcement, ensuring the continuous straightness of the core fibers and effectively solving the performance degradation problem caused by fiber bending during FRP reinforcement production. The mechanically cut ribs have sharper edges and a higher degree of interlocking with concrete, improving the mechanical bonding force between the two materials. Furthermore, the device can flexibly adjust the shape and spacing of the grooves and ribs according to different design requirements to suit various engineering applications, facilitating the standardization and large-scale production of FRP reinforcement. Attached Figure Description

[0009] Figure 1 For traditional FRP (fiberglass reinforced plastic) filament winding and pultrusion molding equipment; Figure 2 The shape of the pultruded FRP reinforcing fiber is determined by winding. Figure 3This is the front view of the grooving device; Figure 4 A three-dimensional schematic diagram of the grooving device (controller omitted); Figure 5 A three-dimensional schematic diagram of the grooving device from one perspective; Figure 6 A three-dimensional schematic diagram of the grooving device from another perspective; Figure 7 This is a schematic diagram of the fiber shape of FRP reinforcement obtained by grooving using a grooving device.

[0010] The meanings of the main reference numerals in the figure are as follows: 1. Base, 2. Support assembly, 3. Sliding clamping device, 4. Grooving assembly, 5. Controller, 6. First guide rail, 7. Slide table, 8. Chassis, 9. Machine shaft, 10. Chuck, 11. First pulley, 12. Rotary motor, 13. Second pulley, 14. Transmission belt, 15. Gear plate, 16. Drive motor, 17. Gear, 18. Base plate, 19. Guide plate, 20. Guide hole, 21. Fixing plate, 22. Fixture, 23. Bracket, 24. Second guide rail, 25. Mounting platform, 26. Telescopic device, 27. Servo motor, 28. Grooving disc. Detailed Implementation

[0011] In practical applications, FRP reinforcement needs to work synergistically with concrete. Good bond performance is fundamental to this synergy, and the key to successful integration lies in ensuring a match between their bond properties and physical characteristics. To guarantee good synergy between FRP reinforcement and concrete, surface treatment (such as roughening) is required to enhance the mechanical anchoring effect. The linear expansion coefficient of FRP reinforcement is close to that of concrete (approximately 10 × 10⁻⁶). -6 / ℃), which can effectively reduce relative deformation caused by temperature changes and avoid adhesion failure. Traditional filament pultrusion molding of FRP ribs involves winding yarn around the surface of the rib to form a spiral groove on its smooth surface. After the resin is fully cured, the yarn is removed, ultimately forming a release groove rib. In this traditional rib-forming method, the application of external force during the winding and extrusion process causes the internal fibers to produce... Figure 2 The bending and wrinkling shown are due to the bending of the stressed fibers in the filament-wound pultruded FRP reinforcement, which reduces the overall integrity of the fibers and lowers the tensile and compressive mechanical properties of the FRP reinforcement. Furthermore, the rib precision of filament-wound pultruded FRP reinforcement is poor, and its adhesion to concrete is also inadequate.

[0012] To address the aforementioned problems, this embodiment provides an FRP reinforcement grooving device, such as... Figure 3-6As shown: It includes a base 1, a support assembly 2 for FRP reinforcement to pass through at one end of the base 1, a sliding clamping device 3 for rotating the FRP reinforcement and linearly displacing it along the guide direction of the support assembly 2 on the base 1 on one side of the support assembly 2; a grooving assembly 4 for grooving the FRP reinforcement on the base 1 on the other side of the support assembly 2; and a controller 5 is also mounted on the front side of the base 1. The controller 5 is electrically connected to the power components (i.e., chuck 10, rotary motor 12, drive motor 16, clamp 22, telescopic device 26 and servo motor 27 mentioned below) in the support assembly 2, the sliding clamping device 3 and the grooving assembly 4, that is, the controller 5 controls the operation of the corresponding power components.

[0013] The sliding clamping device 3 includes two first guide rails 6 (convex-shaped structure) extending symmetrically along the length of the base 1. A slide table 7 is slidably arranged on the two first guide rails 6. A housing 8 is installed on the slide table 7. A hollow machine shaft 9 extending along the length of the slide table 7 and passing through the machine shaft 8 is rotatably installed inside the machine shaft 8. (Bearings are provided on the shaft body of the machine shaft 9, and the whole assembly is installed into the machine shaft 8. Reliable connection between the bearings, the machine shaft 9, and the machine shaft 8 is achieved by interference filling.) A chuck 10 (electric three-jaw type) is installed at one end of the machine shaft 9 near the support assembly 2. A first pulley 11 is installed on the shaft body at the other end of the machine shaft 9. A rotary motor 12 is installed on a slide table 7 located on one side of the first pulley 11. A second pulley 13 corresponding to the first pulley 11 is provided at the end of the rotary motor 12. A transmission belt 14 is provided outside the first pulley 11 and the second pulley 13. A toothed plate 15 is installed on the first guide rail 6 located behind the base 1. The toothed plate 15 has toothed grooves. The slide table 7 extends above the toothed plate 15. A drive motor 16 (a motor that can rotate in both forward and reverse directions) with an actuation shaft that passes vertically downward through the slide table 7 is installed on the slide table 7. A gear 17 that meshes with the toothed grooves on the toothed plate 15 is installed at the end of the actuation shaft of the drive motor 16.

[0014] The support assembly 2 includes a base plate 18. A guide plate 19 is vertically mounted on the side of the base plate 18 away from the chuck 10. The top of the guide plate 19 extends toward the rear of the base 1 and the end is provided with a guide hole 20 coaxial with the machine shaft 9. A fixing plate 21 parallel to the guide plate 19 is mounted on the side of the base plate 18 near the chuck 10. A clamp 22 (electromechanical gripper) is obliquely mounted on the side of the fixing plate 21 near the guide plate 19. The actuating end of the clamp 22 is coaxially arranged with the guide hole 20 (this means that after the actuating end of the clamp 22 is closed, the central area it generates is coaxial with the guide hole 20).

[0015] The grooving assembly 4 includes a bracket 23 extending downwards towards the front of the base 1 at its top. Two second guide rails 24 are symmetrically arranged on the bracket 23 along its length. A mounting platform 25 is slidably mounted on the two second guide rails 24. A telescopic device 26 connected to the mounting platform 25 and used to drive the mounting platform 25 to move linearly back and forth along the second guide rails 24 is provided at the top of the bracket 23. A servo motor 27 is mounted on the mounting platform 25. A grooving disc 28 (also called a cutting disc) is mounted at the end of the servo motor 27, corresponding to the gap between the guide plate 19 and the clamp 22 and arranged parallel to the guide plate 19 and the clamp 22. In practical applications, the top tilt angle of the bracket 23 is determined according to the tilt angle of the bottom end of the guide plate 19. As long as the grooving disc 28 can maintain a large contact area with the FRP rib passing through the guide plate 19 and the clamp 22 after it moves down with the mounting platform 25, it is acceptable.

[0016] When grooving the FRP bar, the FRP bar passes through the guide hole 20 on the guide plate 19 and is clamped by the chuck 10 at the end of the machine shaft 9. Then, the clamp 22 closes, so that the clamp 22 supports the FRP bar but does not clamp it. During the initial processing, the sliding clamping device 3 is located on the far right of the first guide rail 6, close to the support component 2. During the processing, the servo motor 27 is moved down by the telescopic device 26, so that the grooving disk 28 gradually contacts the FRP bar and grooves it (the extension distance of the telescopic device 26 can be controlled by the controller 5, which in turn controls the grooving depth). Then, the drive motor 16 is started to drive the slide table 7 and its components and the FRP bar to move to the right at a constant speed through the meshing gears 17 and tooth grooves. At the same time, the rotation motor 12 is started to drive the machine shaft 9, the chuck 10 and the FRP bar to rotate at a constant speed. During this process, the rotating grooving disk 28 will continuously groove the FRP bar, and the resulting FRP bar material is as follows. Figure 7 As shown, it can preserve the integrity of the fibers in the plain FRP reinforcement to the maximum extent, without affecting the internal fibers. The core fibers are straight, increasing the tensile and compressive strength of the reinforcement. At the same time, the mechanically grooved FRP reinforcement has high rib precision and clear groove patterns, which can improve the bonding performance with concrete.

[0017] The extension distance of the telescopic device 26, the speed of the drive motor 16, and the speed of the rotating motor 12 can all be controlled by the controller 5. In this way, the shape and spacing of the grooves and ribs can be controlled and adjusted according to different design requirements to suit different engineering application scenarios, which facilitates the standardization and large-scale production of FRP reinforcement.

[0018] The above description is only a preferred embodiment of this utility model patent. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model patent, and these improvements and modifications should also be considered within the scope of protection of this utility model patent.

Claims

1. A groove-cutting device for FRP reinforcing bars, characterized in that, The device includes a base, a support assembly for FRP reinforcement to pass through at one end of the base, a sliding clamping device for rotating the FRP reinforcement and linearly displacing it along the guide direction of the support assembly on the base on one side of the support assembly, a grooving assembly for grooving the FRP reinforcement on the base on the other side of the support assembly, and a controller mounted on the front of the base, which is electrically connected to the power components in the support assembly, the sliding clamping device, and the grooving assembly.

2. The FRP rib grooving device according to claim 1, characterized in that, The sliding clamping device includes two first guide rails that extend along the length of the base and are symmetrically arranged. A slide table is slidably arranged on the two first guide rails. A housing is installed on the slide table. A machine shaft that extends along the length of the slide table and passes through the housing is rotatably installed inside the housing. A chuck is installed at one end of the machine shaft near the support assembly. A first pulley is installed on the shaft body at the other end of the machine shaft. A rotary motor is installed on the slide table located on one side of the first pulley. A second pulley corresponding to the first pulley is provided at the end of the rotary motor. A transmission belt is provided outside the first pulley and the second pulley. A toothed plate is installed on the first guide rail located on the rear side of the base. The toothed plate has toothed grooves. A slide extends above the toothed plate and a drive motor with an actuation shaft that passes vertically downward through the slide is installed on the slide. The end of the actuation shaft of the drive motor is equipped with a gear that meshes with the toothed grooves on the toothed plate.

3. The FRP rib grooving device according to claim 2, characterized in that, The support assembly includes a base plate, on the side of the base plate away from the chuck, a guide plate is vertically mounted, the top of the guide plate extends toward the rear of the base and the end is provided with a guide hole coaxial with the machine shaft, a fixing plate parallel to the guide plate is mounted on the side of the base plate near the chuck, and a clamp for supporting the FRP reinforcement is mounted obliquely on the side of the fixing plate near the guide plate.

4. The FRP rib grooving device according to claim 3, characterized in that, The grooving assembly includes a bracket that extends downward at the top toward the front of the base. Two second guide rails are symmetrically arranged on the bracket along the length of the bracket. A mounting platform is slidably arranged on the two second guide rails. A telescopic device connected to the mounting platform is provided on the top of the bracket to drive the mounting platform to move back and forth linearly along the second guide rails. A servo motor is mounted on the mounting platform. At the end of the servo motor is a grooved disc that corresponds to the gap between the guide plate and the fixture and is arranged parallel to the guide plate and the fixture.

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