Carbon fiber prepreg production synchronizing device

Abstract

The invention discloses a carbon fiber prepreg production synchronizing device which comprises a gum dipping tank mounted on a gum dipping tank rack, a gum extruding wheel is arranged at the tail end of the gum dipping tank and is driven by a speed regulating motor, a rocker is arranged at the tail end of the gum dipping tank rack and is rotationally mounted on a mounting frame through a rotating shaft, a rubber belt is sleeved on the rotating shaft, and the rubber belt is connected with the gum dipping tank rack. The other end of the rubber belt is further connected to a rotary knob of an electromagnetic valve regulator in a sleeved mode, and the electromagnetic valve regulator and the speed regulating motor are both electrically connected with the controller. Carbon fibers penetrate through the lower portion of the rocker and then are connected with the extruder after being subjected to gum dipping treatment, when the traction speed of the extruder is too high, the rocker can be lifted, a rotary shaft of the rocker drives a rotary knob of the electromagnetic valve regulator to rotate clockwise through a rubber belt, a rotation signal is fed back to the controller, and the controller controls the speed adjusting motor to adjust the rotation speed, so that the rotation speed of the gum extruding wheel is increased; otherwise, the controller controls the speed regulating motor to regulate the rotating speed, so that the rotating speed of the rubber extruding wheel is slowed down, and the traction speed and the speed of the rubber extruding wheel are regulated to be consistent.

Description

Technical Field

[0001] The present invention relates to a fiber production device, in particular to a carbon fiber prepreg production synchronization device. Background Art

[0002] During the production process of carbon fiber prepreg, the fiber synchronization problem is an important consideration. Fiber asynchronization will lead to uneven distribution of fibers in the prepreg. There may be too many or too few fibers in some areas, thus affecting the strength and performance consistency of the composite material. At the same time, the asynchronization between fiber winding and impregnation will cause fiber knotting and affect the smoothness of production. On the other hand, fiber asynchronization may lead to inconsistent arrangement directions of fibers during the molding process, resulting in a decline in the molding quality of the composite material and problems such as bubbles and defects. Therefore, when manufacturing carbon fiber prepreg, it is very crucial to ensure the uniform distribution and direction consistency of fibers, which will ensure that the finally manufactured composite material has consistent performance and quality. Summary of the Invention

[0003] The purpose of the present invention is to provide a carbon fiber prepreg production synchronization device. The present invention solves the problem of synchronizing the speed of pulling the fiber and the running speed of the fiber impregnating rubber squeezing and drying roller with a simple and practical device, and at the same time dries the impregnated and modified fiber in a timely manner.

[0004] The technical solution of the present invention: A carbon fiber prepreg production synchronization device includes an impregnation tank installed on the impregnation tank frame. A squeezing roller is arranged at the tail end of the impregnation tank. The squeezing roller is driven by a speed regulating motor. A rocker is arranged at the tail end of the impregnation tank frame. The rocker is rotatably installed on the mounting frame through a rotating shaft. A rubber belt is sleeved on the rotating shaft. The other end of the rubber belt is also sleeved on the knob of the solenoid valve regulator. Both the solenoid valve regulator and the speed regulating motor are electrically connected to the controller.

[0005] In the aforementioned carbon fiber prepreg production synchronization device, a rod higher than the impregnation tank is arranged on the impregnation tank frame in front of the impregnation tank, and a guide groove is arranged on the rod; a pressing roller is arranged at the middle front end of the impregnation tank.

[0006] In the aforementioned carbon fiber prepreg production synchronization device, two groups of squeezing rollers are arranged. Each group consists of an upper squeezing roller and a lower squeezing roller. The upper squeezing rollers of the two groups of squeezing rollers are connected to the speed regulating motor through the same chain.

[0007] In the aforementioned carbon fiber prepreg production synchronization device, a drying box is arranged behind the impregnation tank. A guiding component is arranged at the head end of the drying box. The guiding component includes an upper guiding rod and a lower guiding rod. The lower guiding rod is flush with the drying box.

[0008] In the aforementioned carbon fiber prepreg production synchronization device, the rocker is of a U-shaped structure and includes two parallel rotating rods. The left head ends of the two rotating rods are connected by the rocker body. On the front and rear sides of the top of the tail end of the dipping tank frame, there is an installation bracket each, and the rotating rod is rotatably installed on the installation bracket through a rotating shaft.

[0009] In the aforementioned carbon fiber prepreg production synchronization device, a pulley or a rubber belt clamping groove is provided on the rotating shaft and the knob of the solenoid valve regulator.

[0010] In the aforementioned carbon fiber prepreg production synchronization device, a deflector wheel is further provided at the front end of the installation bracket.

[0011] The beneficial effects of the present invention: Compared with the prior art, in the present invention, by providing a rocker, the rotating shaft of the rocker is connected to the solenoid valve regulator through a rubber belt. The solenoid valve regulator and the speed regulating motor are both electrically connected to the controller. After the carbon fiber is impregnated, it passes under the rocker and then is connected to the extruder. When the traction speed of the extruder is too fast, the rocker will be lifted, and the rotating shaft of the rocker drives the knob of the solenoid valve regulator to rotate clockwise through the rubber belt. This rotation signal is fed back to the controller, and the controller controls the speed regulating motor to adjust the speed, so that the rubber extrusion wheel speeds up; on the contrary, when the traction speed becomes slower, the rotating shaft of the rocker drives the knob of the solenoid valve regulator to rotate counterclockwise through the rubber belt. This rotation signal is also fed back to the controller, and the controller controls the speed regulating motor to adjust the speed, so that the speed of the rubber extrusion wheel becomes slower. In this way, the traction speed and the speed of the rubber extrusion wheel are adjusted to be consistent. In the whole device, the traction wheel of the extruder, the solenoid valve regulator, and the speed regulating motor form a "feedback regulation" system to adjust the traction speed and the speed of the rubber extrusion wheel to be consistent.

[0012] Specifically, the device of the present invention has the following advantages: 1) The fiber impregnation and traction are synchronized, and the speed regulation feedback system can accurately adjust the synchronization of the fiber and the traction; 2) Multiple groups of pressing wheels are used to impregnate and dry the fiber. The "S-shaped" walking path of the fiber ensures the uniformity and complete penetration of the fiber impregnation; 3) The synchronous air drying device eliminates the post-treatment of the fiber, and the fiber can be directly wound and cured after passing through this device. Description of the Drawings

[0013] Figure 1 is the structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the dipping tank of the present invention.

[0014] Reference Numerals: 1 - fiber tow, 2 - pressing wheel, 3 - dipping tank, 4 - adhesive solution, 5 - glue squeezing wheel, 6 - rocker, 7 - speed regulating motor, 8 - solenoid valve regulator, 9 - drying oven, 10 - chain, 11 - rubber belt, 12 - rod, 13 - mounting bracket, 14 - upper guide rod, 15 - lower guide rod, 16 - rotating rod, 17 - rocker body, 18 - deflecting wheel. Detailed Embodiment

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but it shall not be used as a basis for limiting the present invention.

[0016] Embodiment of the present invention: A carbon fiber prepreg production synchronization device includes a dipping tank 3 installed on the dipping tank frame. A glue squeezing wheel 5 is provided at the tail end of the dipping tank 3. The glue squeezing wheel 5 is driven by a speed regulating motor 7. A rocker 6 is provided at the tail end of the dipping tank frame. The rocker 6 is rotationally installed on the mounting bracket 13 through a rotating shaft. A rubber belt 11 is sleeved on the rotating shaft. The other end of the rubber belt 11 is also sleeved on the knob of the solenoid valve regulator 8. Both the solenoid valve regulator 8 and the speed regulating motor 7 are electrically connected to the controller.

[0017] During the use of this device, the fiber tow 1 first passes through the dipping tank 3 for dipping treatment. The dipped fiber tow 1 then passes through the glue squeezing wheel 5 to "squeeze out" the excess adhesive solution. The "squeezed" fiber passes through the lower part of the rocker 6. Finally, the fiber tow 1 enters the extruder for modification. The traction force of the extruder on the fiber tow 1 forms an upward lifting force on the rocker 6. When the traction speed of the extruder is too fast, the rocker 6 will be lifted, causing the rotating shaft of the rocker 6 to rotate. Under the action of friction, the rubber belt 11 is driven to rotate together with the rotating shaft. Similarly, the rubber belt 11 will also drive the knob of the solenoid valve regulator 8 to rotate under the action of friction, causing the rotating shaft of the rocker 6 to drive the knob of the solenoid valve regulator 8 to rotate clockwise through the rubber belt 11. The rotation signal of the solenoid valve regulator 8 is fed back to the controller. After receiving the clockwise rotation signal of the solenoid valve regulator 8, the controller will control the speed of the speed regulating motor 7 to increase, so that the glue squeezing wheel 5 speeds up; conversely, when the traction speed slows down, the upward lifting force on the rocker 6 will become smaller. At this time, the rocker 6 will rotate downward counterclockwise under its own weight. The rotating shaft of the rocker 6 drives the knob of the solenoid valve regulator 8 to rotate counterclockwise through the rubber belt 11. This rotation signal is also fed back to the controller. The controller controls the speed of the speed regulating motor 7 to decrease, so that the speed of the glue squeezing wheel 5 slows down. In this way, the traction speed and the speed of the glue squeezing wheel 5 are adjusted to be consistent. In the whole device, the traction force of the extruder, the solenoid valve regulator 8, and the speed regulating motor 7 form a "feedback regulation" system to adjust the traction speed and the speed of the glue squeezing wheel 5 to be consistent.

[0018] A rod 12 higher than the dipping tank 3 is provided on the dipping tank rack in front of the dipping tank 3, and a guiding groove is provided on the rod 12; a pressing wheel 2 is provided at the front end in the dipping tank 3. The fiber bundle 1 enters the dipping tank 3 filled with glue liquid 4 after being deflected by the rod 12 with the guiding groove. The fiber bundle 1 passes through the bottom of the pressing wheel 2, immersing the fiber bundle 1 in the glue liquid. After passing through the rod 12, the fiber bundle 1 walks in an "S" shape. After walking along the "S" - shaped path, the fiber bundle 1 becomes dispersed, and at this time, the glue liquid 4 can better infiltrate the fiber bundle 1.

[0019] There are two sets of squeezing wheels 5, and each set consists of an upper squeezing wheel and a lower squeezing wheel. Setting two sets of squeezing wheels 5 can better "squeeze dry" the glue liquid on the fiber bundle 1. The upper squeezing wheels of the two sets of squeezing wheels 5 are connected to the speed - regulating motor 7 through the same chain 10, that is, one speed - regulating motor 7 drives the upper squeezing wheels of the two sets of squeezing wheels 5 to rotate through the same chain 10. By adjusting the rotation speed of the speed - regulating motor 7, the rotation speed of the squeezing wheels 5 can be adjusted.

[0020] A drying box 9 is provided behind the dipping tank 3. The "squeezed - dry" fiber bundle 1 passes through the lower part of the rocker 6 and then enters the drying box 9 to dry the fiber bundle 1. Finally, the fiber bundle 1 enters the extruder for modification. A guiding component is provided at the head end of the drying box 9. The guiding component includes an upper guiding rod 14 and a lower guiding rod 15, and the lower guiding rod 15 is flush with the drying box 9. The fiber bundle 1 passes through the bottom of the rocker 6 and then is deflected and wound around the top of the upper guiding rod 14, and then horizontally enters the drying box 9 from the bottom of the lower guiding rod 15. The provision of the upper guiding rod 14 enables the fiber bundle 1 to have an upward lifting force on the rocker 6 after passing through the bottom of the rocker 6. When the traction speed of the extruder is too fast, the lifting force becomes larger, which will cause the rocker 6 to rotate upward. When the traction speed of the extruder becomes slower, the lifting force becomes smaller, which will cause the rocker 6 to rotate downward. The provision of the lower guiding rod 15 enables the fiber bundle 1 to enter the drying box 9 horizontally for drying, avoiding the contact between the fiber bundle 1 and the inlet of the drying box 9, and easily causing the fiber bundle 1 to break under the action of the traction force.

[0021] The rocker 6 is of a U - shaped structure and includes two parallel rotating rods 16. The left - hand head ends of the two rotating rods 16 are connected by a rocker body 17. There is an installation bracket 13 on each of the front and rear sides at the top of the tail end of the dipping tank rack. The rotating rod 16 is rotationally installed on the installation bracket 13 through a rotating shaft. Since there is only a rocker body 17 at one end of the two rotating rods 16, when the fiber bundle 1 has not passed through, under the action of the self - weight of the rocker body 17, the rocker 6 will rotate downward and contact the installation bracket 13. After the fiber bundle 1 passes through the bottom of the rocker body 17, an upward lifting force is formed on the rocker 6.

[0022] The rotating shaft and the knob of the solenoid valve regulator 8 are provided with pulleys or rubber belt slots to facilitate the rubber belt 11 to be inserted into the pulleys or rubber belt slots, thereby limiting the rubber belt 11 and preventing the rubber belt 11 from falling off the rotating shaft of the rocker 6 or the knob of the solenoid valve regulator 8.

[0023] The front end of the mounting frame 13 is also provided with a direction-changing wheel 18 , and the fiber bundle 1 after the excess glue is “squeezed out” by the glue squeezing wheel 5 is changed in direction by the direction-changing wheel 18 and then passes through the bottom of the rocker 6 .

[0024] The specific engineering process of the device of the present invention is as follows: The fiber bundle 1 changes direction through the rod 12 with the guide groove and enters the dipping tank 3 filled with glue 4. The pressing wheel 2 immerses the fiber bundle 1 in the glue to achieve dipping. After passing through the rod 12, the fiber moves in an "S" shape. After walking in the "S"-shaped path, the fiber bundle 1 becomes sparse, and the glue 4 can better infiltrate the fiber. After the fiber is infiltrated, the two sets of rubber squeezing wheels 5 "squeeze out" the excess glue. The "squeezed" fiber passes over the top of the deflection wheel 18 and then passes through the bottom of the rocker 6. After being guided by the guide assembly, it enters the drying box 9 to dry the fiber. Finally, the fiber enters the extruder for modification.

[0025] When the traction speed of the extruder is too fast, the upward lifting force on the rocker 6 increases, so that the rocker 6 will be lifted. At this time, the rocker 6 drives the knob of the solenoid valve regulator 8 to rotate clockwise through the rubber belt 11, and the solenoid valve regulator 8 feeds back the signal of the traction speed to the controller. The controller controls the speed of the speed regulating motor 7 to increase, and the motor speed increases. Similarly, the chain 10 pulls the rubber extrusion wheel 5 to increase the speed, so that the traction speed is adjusted to the same speed as the rubber extrusion wheel 5. On the contrary, when the traction speed of the extruder slows down, the rocker 6 will droop and rotate counterclockwise. At this time, the knob of the solenoid valve regulator 8 rotates counterclockwise under the action of the rubber belt 11, and the rotation signal is also fed back to the controller. After receiving the signal, the controller controls the speed regulating motor 7 to slow down the motor speed, and then the rotation speed of the rubber extrusion wheel 5 will also slow down accordingly. In the whole device, the extruder traction wheel-solenoid valve regulator 8-speed regulating motor 7 forms a "feedback adjustment" system to adjust the traction speed to the same speed as the rubber extrusion wheel 5.

Claims

1. A carbon fiber prepreg production synchronization device, characterized in that: The invention comprises a dipping tank (3) mounted on a dipping tank frame, a rubber squeezing wheel (5) being arranged at the rear end of the dipping tank (3), the rubber squeezing wheel (5) being driven by a speed regulating motor (7), a rocker (6) being arranged at the rear end of the dipping tank frame, the rocker (6) being rotatably mounted on a mounting frame (13) via a rotating shaft, a rubber belt (11) being sleeved on the rotating shaft, the other end of the rubber belt (11) being sleeved on a knob of a solenoid valve regulator (8), and the solenoid valve regulator (8) and the speed regulating motor (7) being electrically connected to a controller.

2. A carbon fiber prepreg production synchronization device according to claim 1, characterized in that: A rod (12) higher than the glue dipping tank (3) is arranged on the glue dipping tank frame in front of the glue dipping tank (3), and a guide groove is arranged on the rod (12); a pressing wheel (2) is arranged at the front end of the glue dipping tank (3).

3. A carbon fiber prepreg production synchronization device according to claim 1, characterized in that: The rubber extruding wheels (5) are provided in two groups, each group consisting of an upper rubber extruding wheel and a lower rubber extruding wheel, and the upper rubber extruding wheels of the two groups of rubber extruding wheels (5) are connected to the speed regulating motor (7) via the same chain (10).

4. A carbon fiber prepreg production synchronization device according to claim 1, characterized in that: A drying box (9) is arranged behind the dipping tank (3), and a guide assembly is arranged at the head end of the drying box (9), the guide assembly comprising an upper guide rod (14) and a lower guide rod (15), and the lower guide rod (15) is flush with the drying box (9).

5. A carbon fiber prepreg production synchronization device according to claim 1, characterized in that: The rocker (6) is a U-shaped structure, comprising two rotating rods (16) parallel to each other, the left head ends of the two rotating rods (16) being connected via a rocker body (17), a mounting frame (13) being provided at the front and rear sides of the top of the rear end of the glue dipping tank frame, and the rotating rod (16) being rotatably mounted on the mounting frame (13) via a rotating shaft.

6. A carbon fiber prepreg production synchronization device according to claim 1, characterized in that: The rotating shaft and the knob of the solenoid valve regulator (8) are provided with a pulley or a rubber belt slot.

7. A carbon fiber prepreg production synchronization device according to claim 1, characterized in that: A direction-changing wheel (18) is also provided at the front end of the mounting frame (13).

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