Open-loop control system for adjusting fiber tension

Abstract

The utility model discloses an open-loop control system for adjusting fiber tension, and relates to the field of fiber tension control. The magnetic powder brake is connected with a yarn shaft, the manual tension controller is connected with the magnetic powder brake, the tension sensor is used for measuring tension of a fiber bundle, the tension amplifier is connected with the tension sensor, the alarm is connected with the tension amplifier, the tension sensor is tightly attached to the fiber bundle, and a protective cover is arranged on the outer side of the fiber bundle. The tension amplifier can display the tension value of the current fiber bundle, a worker can obtain the specific tension value in real time, the worker can manually adjust the manual tension controller to the proper tension value and accurately control the tension according to the real-time tension value, and the system is low in price and reduces the cost.

Description

Technical Field

[0001] The utility model relates to the field of fiber tension control, in particular to an open-loop control system for adjusting fiber tension. Background Art

[0002] Filament winding is a key forming process in FRP production. Fibers are pre-tensioned, impregnated with a resin binder, and then arranged in a regular pattern on a core mold. The winding process increases density and, consequently, the strength of the finished product. Applying and controlling tension to the fiber material is crucial in the winding molding of composite products. Appropriate tension straightens the fibers, removes air bubbles, and allows for resin penetration, resulting in a denser finished product. Furthermore, to avoid fiber breakage due to excessive tension, which could affect product quality, stringent control of winding tension parameters is crucial.

[0003] The traditional tension control system has insufficient tension control accuracy and lacks a device to measure tension. The tension needs to be adjusted manually, and the tension control is unstable, which cannot meet the process requirements. Although the new closed-loop tension control system can control the tension well, the structure of the tension system is relatively complex and the cost is high. Utility Model Content

[0004] The utility model provides an open-loop control system for adjusting fiber tension, so as to solve the problem that traditional tension control means cannot measure the tension of the fiber and accurately control the tension.

[0005] The utility model is an open-loop control system for adjusting fiber tension, which adopts the following technical solution: the device comprises: a yarn shaft for mounting a yarn ball and a core mold for winding a fiber bundle, and is characterized in that it comprises a magnetic powder brake connected to the yarn shaft, a manual tension controller connected to the magnetic powder brake, a tension sensor for measuring the tension of the fiber bundle, a tension amplifier connected to the tension sensor, and an alarm connected to the tension amplifier;

[0006] The tension sensor is in close contact with the fiber bundle; a protective cover is provided on the outside of the fiber bundle.

[0007] Preferably, the tension sensor is arranged below the fiber bundle, and tension auxiliary rollers are respectively arranged on both sides of the tension sensor. The tension auxiliary rollers are located above the fiber bundle and are in close contact with the fiber bundle.

[0008] Preferably, the protective cover includes a groove-shaped seat, a top plate movably connected to the groove-shaped seat, and two support rods vertically arranged at the bottom of the groove-shaped seat.

[0009] Preferably, the top plate is inserted into the top of the groove-shaped seat, and the length of the top plate is equal to the length of the groove-shaped seat.

[0010] Preferably, the support rod is height adjustable.

[0011] Preferably, the top end of the support rod is hinged to the grooved seat.

[0012] Preferably, the model of the magnetic powder brake is FZ6A-1, FZ12A-1, FZ25A-1 or FZ50A-1.

[0013] Preferably, the model of the manual tension controller is KTC800A, KTC002A or KTC002B.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, the tension sensor is connected to the tension amplifier, which can display the current tension value of the fiber bundle. The staff can obtain the specific tension value in real time. According to the real-time tension value, the staff can manually adjust the manual tension controller to adjust it to the appropriate tension value and accurately control the tension. In addition, the system is inexpensive, which reduces costs.

[0016] 2. In the present invention, the tension amplifier is connected to the alarm. When the resin displayed on the tension amplifier exceeds the preset range, the alarm sounds to remind the staff to adjust the tension value in time.

[0017] 3. In the present invention, a protective cover is provided on the outside of the fiber bundle, which can protect the fiber bundle to a certain extent, reduce dust falling on the fiber bundle, thereby reducing the friction force borne by the fiber bundle, and thus reducing the influence of friction force on the tension value of the fiber bundle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0020] Figure 2 This is a side structural schematic diagram of a protective cover according to an embodiment of the present utility model.

[0021] Description of Reference Numerals

[0022] 1. Yarn shaft; 2. Core mold; 3. Magnetic powder brake; 4. Manual tension controller; 5. Tension sensor; 6. Tension amplifier; 7. Alarm; 8. Protective cover; 9. Tension auxiliary roller; 81. Grooved seat; 82. Top plate; 83. Support rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] An embodiment of an open-loop control system for adjusting fiber tension of the present invention is as follows: Figure 1 and Figure 2 As shown, the device comprises: a yarn shaft 1 for mounting a yarn ball and a core mold 2 for winding a fiber bundle, and is characterized in that it includes a magnetic powder brake 3 connected to the yarn shaft 1, a manual tension controller 4 connected to the magnetic powder brake 3, a tension sensor 5 for measuring the tension of the fiber bundle, a tension amplifier 6 connected to the tension sensor 5, and an alarm 7 connected to the tension amplifier 6;

[0025] The tension sensor 4 is in close contact with the fiber bundle; a protective cover 8 is provided on the outside of the fiber bundle.

[0026] When this embodiment is actually used, the yarn ball wrapped with the fiber bundle is installed on the yarn shaft 1, and the fiber bundle passes through the tension sensor 5 and is wound onto the core mold 2 rotating at a certain speed. The tension sensor 5 monitors the tension value of the fiber bundle and transmits the tension value to the tension amplifier 6 in the form of an electrical signal. The tension amplifier 6 can display the tension value. When the tension value exceeds the preset range, the alarm 7 will sound an alarm to remind the staff to adjust the manual tension controller 4. The manual tension controller 4 controls the magnetic powder brake 3 to change the torque of the yarn shaft 1, thereby adjusting the tension of the fiber bundle.

[0027] In this embodiment, it should be noted that the protective cover outside the fiber bundle can protect the fiber bundle to a certain extent, reducing the dust in the air that increases the friction force on the fiber bundle.

[0028] In this embodiment, the tension sensor 4 is disposed below the fiber bundle. Tension auxiliary rollers 9 are respectively disposed on both sides of the tension sensor 4. The tension auxiliary rollers 9 are located above the fiber bundle and in close contact with the fiber bundle.

[0029] In this embodiment, it should be noted that, under the action of the tension auxiliary rollers 9 on both sides of the tension sensor 4, the fiber bundle is more closely attached to the tension sensor 4, and the tension value monitored by the tension sensor 4 is more accurate.

[0030] In this embodiment, it should be noted that the contact surface between the tension auxiliary roller 9 and the fiber bundle is a smooth surface, which reduces the influence of friction on the tension of the fiber bundle.

[0031] In this embodiment, the protective cover 8 includes a groove-shaped seat 81 , a top plate 82 movably connected to the groove-shaped seat 81 , and two support rods 83 vertically arranged at the bottom of the groove-shaped seat 81 .

[0032] In this embodiment, it should be noted that the groove seat 81 is in the shape of an elongated strip, with both ends of the groove seat 81 open. The tops of the two side walls of the groove seat 81 are oppositely provided with transverse slots for mounting the top plate 82 .

[0033] In this embodiment, it should be noted that the two support rods 83 are respectively close to the two ends of the groove seat 81.

[0034] In this embodiment, the top plate 82 is inserted into the top of the groove-shaped seat 81 , and the length of the top plate 82 is equal to the length of the groove-shaped seat 81 .

[0035] In this embodiment, the height of the support rod 83 is adjustable.

[0036] In this embodiment, the top end of the support rod 83 is hinged to the groove-shaped seat 81 .

[0037] In this embodiment, it should be noted that when the top end of the support rod 83 is hinged to the groove seat 81 , the support rod 83 can always remain in a vertical state no matter how the inclination angle of the groove seat 81 is adjusted.

[0038] When using this embodiment, the height of the support rods 83 at both ends is adjusted to ensure that the fiber bundle is located in the groove seat 81, and then the top plate 82 is inserted into the top of the groove seat 81 to protect the fiber bundle and reduce dust falling on the fiber bundle.

[0039] In this embodiment, the model of the magnetic powder brake 3 is FZ6A-1, FZ12A-1, FZ25A-1 or FZ50A-1.

[0040] In this embodiment, the model of the manual tension controller 4 is KTC800A, KTC002A or KTC002B

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An open-loop control system for adjusting fiber tension, comprising a yarn shaft (1) for mounting a yarn ball and a core mold (2) for winding a fiber bundle, characterized in that: It comprises a magnetic powder brake (3) connected to the yarn shaft (1), a manual tension controller (4) connected to the magnetic powder brake (3), a tension sensor (5) for measuring the tension of the fiber bundle, a tension amplifier (6) connected to the tension sensor (5), and an alarm (7) connected to the tension amplifier (6); The tension sensor (4) is in close contact with the fiber bundle; and a protective cover (8) is provided on the outside of the fiber bundle.

2. An open-loop control system for adjusting fiber tension according to claim 1, characterized in that: The tension sensor (4) is arranged below the fiber bundle, and tension auxiliary rollers (9) are respectively arranged on both sides of the tension sensor (4). The tension auxiliary rollers (9) are located above the fiber bundle and are in close contact with the fiber bundle.

3. The open-loop control system for adjusting fiber tension according to claim 1, characterized in that: The protective cover (8) comprises a groove-shaped seat (81), a top plate (82) movably connected to the groove-shaped seat (81), and two supporting rods (83) vertically arranged at the bottom of the groove-shaped seat (81).

4. An open-loop control system for adjusting fiber tension according to claim 3, characterized in that: The top plate (82) is inserted into the top of the groove-shaped seat (81), and the length of the top plate (82) is equal to the length of the groove-shaped seat (81).

5. The open-loop control system for adjusting fiber tension according to claim 3, characterized in that: The height of the support rod (83) is adjustable.

6. An open-loop control system for adjusting fiber tension according to claim 3, characterized in that: The top end of the support rod (83) is hinged to the grooved seat (81).

7. An open-loop control system for adjusting fiber tension according to claim 1, characterized in that: The model of the magnetic powder brake (3) is FZ6A-1, FZ12A-1, FZ25A-1 or FZ50A-1.

8. The open-loop control system for adjusting fiber tension according to claim 1, characterized in that: The model of the manual tension controller (4) is KTC800A, KTC002A or KTC002B.

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