CN115961499A - A device for preparing chopped carbon fiber orientation - Google Patents

Abstract

The invention discloses a chopped carbon fiber orientation preparation device, which comprises a flow pulp orientation device for controlling the orientation rate of chopped carbon fibers and the surface density of felting; the pulp flow orientation device comprises a pulp flow motion platform device and an orientation seat device; the orientation seat device comprises a cylinder mounting seat, a height adjusting cylinder is arranged on the cylinder mounting seat and connected with a rotating cylinder seat, an angle-controllable swing cylinder is arranged on the rotating cylinder seat and connected with a head flow pipe seat, a flow pipe is fixed on the head flow pipe seat, the top end of the head flow pipe is connected with a feeding valve body, the bottom end of the head flow pipe is connected with a left orientation nozzle plate and a right orientation nozzle plate, the left orientation nozzle plate and the right orientation nozzle plate are combined to form an orientation nozzle with a gradually-reduced taper section at the upper part and a parallel splint section at the lower part, and a damping coating is adhered to the inner wall of the orientation nozzle; the orientation seat device is arranged on the pulp flow motion platform device through a cylinder mounting seat. The device has good orientation control effect and high flexibility.

Description

A device for preparing chopped carbon fiber orientation

technical field

The invention relates to the field of felting, in particular to a chopped carbon fiber orientation preparation device.

Background technique

Carbon fiber materials are widely used in textiles, military, environmental protection, medicine, construction, biology, civil engineering, aerospace and other fields due to their outstanding advantages such as high specific strength, high specific modulus, low density, corrosion resistance, and high temperature resistance.

Among them, the carbon fiber felt made of carbon fiber has the advantages of highly developed microporous structure, large adsorption capacity, fast desorption speed, and good purification effect, and is widely used in various fields.

Existing devices for carbon fiber felting, such as a method and device for preparing chopped fiber continuous orientation felt disclosed in Chinese patent application CN106758481A; and a chopped fiber disclosed in Chinese patent application CN114272834A Carbon fiber felting unit.

The chopped carbon fiber felting process provided by the above-mentioned patented technology can be realized, but the structure of the device is complicated, and the orientation rate of the felted carbon fiber is difficult to guarantee, the efficiency is relatively low, the device is not fully functional, and the flexibility needs to be improved.

Contents of the invention

Aiming at the above technical problems and the deficiencies in the field, the present invention provides a chopped carbon fiber orientation preparation device, which has good orientation control effect and high flexibility, can not only improve the quality of felting, but also occupies a small area and has a simple structure.

A device for preparing chopped carbon fiber orientation, including a slurry orientation device for controlling the orientation rate of chopped carbon fiber and the surface density of felting;

The slurry orientation device includes a slurry movement platform device and an orientation seat device;

The orientation seat device includes a cylinder mounting seat, on which a height-adjusting cylinder is arranged, and the height-adjusting cylinder is connected to a rotating cylinder seat, and an angle-controllable swing cylinder is arranged on the rotating cylinder seat, and an angle-controllable swing cylinder is connected to a slurry pipe seat to flow The slurry pipe is fixed on the slurry pipe seat, the top of the flow pipe is connected to the feed valve body, and the bottom is connected to the left orientation nozzle plate and the right orientation nozzle plate, and the left orientation nozzle plate and the right orientation nozzle plate are combined to form the upper part as a tapered section , The lower part is the orientation nozzle of the parallel splint section, and the inner wall of the orientation nozzle is coated with a damping coating;

The orientation seat device is set on the slurry movement platform device through the cylinder mounting seat.

The principle of action of the above-mentioned orientation seat device on fiber orientation is induced by the tapering of the fiber suspension-rheological properties and the fiber suspension is affected by friction resistance along the two parallel side plates, and the flow velocity is lower than that of the fiber suspension in the middle, so shearing occurs Orientation force, the chopped fibers are automatically oriented during the flow.

The orientation nozzle tapers to induce the orientation of the parallel splints. Preferably, the gap between the parallel splint segments is 1.2-1.5 mm, and the height distance is 40-50 mm.

Preferably, the slurry motion platform device includes two X-axis slide tables, a slide table is set up on the two X-axis slide tables, a Y-axis motion slide table is arranged on the slide table, and the orientation seat device is arranged on the Y-axis through the cylinder mounting seat. on the sports slide;

The two X-axis sliding tables are synchronously controlled by the first servo motor through the shaft transmission, so that the sliding table and the Y-axis motion sliding table on it drive the overall X-axis displacement movement of the orientation seat device;

The Y-axis motion slide table is driven by the second servo motor through the ball screw to realize the Y-axis displacement movement of the orientation seat device.

Preferably, the chopped carbon fiber orientation preparation device also includes:

The conveying device is connected with the feed valve body, and is used to convey the chopped carbon fiber slurry to the slurry orientation device under constant pressure;

The circular forming mesh belt device is set under the flow pulp orientation device, with several suction devices with negative pressure suction function, located under the circular forming mesh belt, used for dehydration and felting of carbon fiber slurry, and is connected with the flow pulp movement platform The combination of devices can realize area-type and continuous-type oriented felting;

The heating and drying device is set above the cycle forming mesh belt device and at the rear end of the flow orienting device. It has the function of heating and temperature control, and is used for drying carbon fiber orientation felt; it is under the cycle forming mesh belt and directly below the heating and drying device Several ventilation devices are provided.

Preferably, the cycle forming mesh belt device includes a frame body on which the cycle forming mesh belt is fixed, and the frame body is provided with a traction device to drive the cycle forming mesh belt to move and a mesh belt deviation correction control device.

Preferably, the suction device is used to suck the moisture on the circulating forming mesh belt, including a suction pipe and a water collecting cover device communicated with the suction pipe;

The water collection cover device includes a plurality of water collection tanks arranged under the circular forming mesh belt, and the bottom of the water collection tanks is provided with an air guide device, which is connected to the exhaust pipe provided under the water collection cover through the partition control pipe valve body.

Preferably, the heating and drying device includes a heating furnace body, a heating lampshade is installed in the heating furnace body, and an infrared heating lamp is installed in the heating lampshade;

The heating furnace body is made of stainless steel and an insulating material layer is installed in the middle;

The damper plate is arranged on the heating furnace body and can move up and down.

Compared with the prior art, the present invention has beneficial effects:

1. The continuous orientation felting of the chopped carbon fiber orientation preparation device of the present invention greatly improves production efficiency and saves energy consumption; and the device has a simple structure, a small footprint and wide applicability.

2. The present invention realizes the effective control of the slurry flow rate and fiber orientation rate by setting the conveying device, the slurry orientation device, the cycle forming mesh belt device and the heating and drying device, and significantly improves the quality of felting .

Description of drawings

Fig. 1 is the schematic diagram of assembly of the chopped carbon fiber orientation preparation device of the embodiment;

Fig. 2 is the structural representation of the slurry movement platform device of embodiment;

Fig. 3 is the schematic diagram of the structure of the orientation seat device of the embodiment;

Fig. 4 is the schematic diagram of the structure of the orientation shower head of the embodiment;

Fig. 5 is the structural schematic diagram of the cycle forming mesh belt device of the embodiment;

Fig. 6 is a schematic structural view of the water collecting cover device of the embodiment;

Fig. 7 is the schematic diagram of the structure of the exhaust duct of the embodiment;

Fig. 8 is a schematic structural diagram of the heating and drying device of the embodiment.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. The operating methods not indicated in the following examples are generally in accordance with conventional conditions, or in accordance with the conditions suggested by the manufacturer.

As shown in Figure 1, the chopped carbon fiber orientation preparation device of this embodiment includes a conveying device (not shown), a slurry orientation device for controlling the orientation rate of chopped carbon fibers and the surface density of felting, and a device for orientation felting The formed circular forming mesh belt device 1 and the heating and drying device 3 which is arranged above the circulating forming mesh belt, has a heating and temperature control function, and is used for drying carbon fiber oriented felt.

The conveying device is used to convey the chopped carbon fiber slurry to the slurry orientation device under constant pressure.

The slurry orientation device includes a slurry movement platform device 2 and an orientation seat device 210 .

As shown in Figure 3, the orientation seat device 210 includes a cylinder mount 2101, the cylinder mount 2101 is provided with a height adjustment cylinder 2102, the height adjustment cylinder 2102 is connected to a rotating cylinder base 2103, and the rotation cylinder base 2103 is provided with an angle controllable swing cylinder 2104, the angle controllable swing cylinder 2104 is connected to the flow pipe seat 2106, the flow pipe 2107 is fixed on the flow pipe seat 2106, the top of the flow pipe 2107 is connected to the feed valve body 2105, and the feed valve body 2105 is connected to the conveying device, and the flow The bottom end of the slurry pipe 2107 is connected to the left orientation sprinkler plate 2018 and the right orientation sprinkler plate 2109. After the combination of the left orientation sprinkler plate 2108 and the right orientation sprinkler plate 2109, an orientation sprinkler head with a tapered section at the upper part and a parallel splint section at the lower part is formed, see Fig. 4. The inner wall of the orientation nozzle is coated with a damping coating 2110 . The orientation nozzle tapers to induce the orientation of the parallel splints, the gap between the parallel splints is controlled to be 1.2-1.5mm, and the height distance is controlled to be 40-50mm.

When the slurry flows through the orientation seat device 210 and passes through the orientation nozzle formed by the combination of the left orientation nozzle plate 2108 and the right orientation nozzle plate 2109, after the slurry on both sides is affected by the damping coating, the slurry flow velocity is lower than the slurry flow velocity in the middle of the orientation nozzle, due to the The difference in flow velocity forms the active arrangement and orientation of the fibers, and finally the oriented fibers flow out from the flat nozzle at the bottom of the orientation nozzle.

The material of the damping coating 2110 in this embodiment is a roughened alloy wear-resistant coating. The raw materials of the alloy wear-resistant coating are composed of WC, Co, Mo and Ni, which can further increase the flow resistance of the fiber slurry to improve the resistance of the chopped fibers. Orientation degree, after it is pasted, the flow resistance on the surface of the nozzle plate will be doubled.

The angle-controllable swing cylinder 2104 in the orientation seat device 210 is used to control the angle between the orientation nozzle and the circular forming mesh belt when the orientation nozzle moves back and forth. angular direction.

The height adjustment cylinder 2102 is used to control the height position between the orientation nozzle and the circulating forming mesh belt when the orientation nozzle moves, and the end position when the orientation nozzle moves back and forth. Felt to the touch.

As shown in Figure 1 and Figure 2, the slurry motion platform device 2 includes two X-axis slide tables, which are respectively the X-axis left slide table 207 and the X-axis right slide table 209, and the two X-axis slide tables are provided with slide tables Plate 212, sliding platform The Y-axis moving sliding platform 211 is fixedly installed on the sliding platform, and the orientation seat device 210 is arranged on the Y-axis moving sliding platform 211 through the cylinder mounting seat 2101 .

The two X-axis sliding tables are synchronously controlled by the first servo motor 202 through the shaft transmission 203. The X-axis left sliding table 207 and the X-axis right sliding table 209 drive the sliding table 212 on the two X-axis sliding tables and the Y-axis The motion slide table 211 moves back and forth, and simultaneously drives the X-axis drag chain 205 to move together.

The Y-axis motion slide table 211 is driven by the second servo motor 201 through the ball screw, and drives the orientation seat device 210 to move along the Y-axis direction on the Y-axis motion slide table 211. At the same time, it can also drive the Y-axis drag chain support plate The Y-axis drag chain 208 on the 204 moves together, and the Y-axis drag chain support plate 204 is fixedly installed on the slide plate 212 .

The two X-axis sliding tables and the Y-axis moving sliding table 211 in the slurry movement platform device 2 are used to control the orientation seat device 210 to move in the X and Y directions on the mesh surface of the cycle forming mesh belt device 1; and according to The preparation process can carry out repeated multi-layer spraying and felting.

As shown in Fig. 1 and Fig. 5, the circular forming mesh belt device 1 is arranged below the flow slurry orientation device, and has four exhaust devices 102 located under the circular forming mesh belt and having a negative pressure suction function, of which two exhaust devices 102 is directly below the heating and drying device 3, and is used for dehydration felting of carbon fiber slurry, and cooperates with the slurry movement platform device 2 to realize area type and continuous orientation felting.

The cycle forming mesh belt device 1 includes a frame body 101 on which the cycle forming mesh belt is fixed, and the frame body 101 is provided with a traction device and a mesh belt deviation correction control device to drive the cycle forming mesh belt to move. In this embodiment, the traction device includes a driving roller 109 , a tension adjustment driven roller 107 and a driving roller 106 . The driving roller 109 is arranged on the top surface of the frame body 101 close to one end of the heating and drying device 3 , and is connected with the mesh belt drive servo motor 1011 through the synchronous belt drive 1010 . The tension adjustment driven roller 107 is arranged at the end of the top surface of the frame body 101 away from the heating and drying device 3 , and the end is connected with an adjustment bearing seat 1013 for adjusting tension. The transmission passing roller 106 is arranged below the tension adjustment driven roller 107 . The mesh belt deviation correction control device includes a deviation correction roller 105 located between the tension adjustment driven roller 107 and the transmission passing roller 106 .

8 adjusting casters 103 are installed on the bottom of the frame body 101 . A water receiving chassis 104 is installed between the frame body 101 and the adjusting casters 103 .

The air suction device 102 is used for suctioning the moisture on the circulating forming mesh belt, and includes an air suction pipe 1026 (see FIG. 7 ) and a water collecting cover device communicated with the air suction pipe 1026 . The exhaust pipe 1026 adopts 4 vortex blowers to carry out large suction suction and dewatering.

As shown in Figure 6, the water collection cover device includes a plurality of water collection tanks 1022 arranged under the circular forming mesh belt. The quick-fit joint 1023 is connected with the zone control pipeline valve body 1024, and the zone control pipeline valve body 1024 is connected with the exhaust pipe 1026 arranged under the water collecting cover.

The fiber orientation slurry flows on the circular forming mesh belt, and an exhaust device is installed under the circular forming mesh belt, which can quickly desizing and water removal.

As shown in Fig. 1 and Fig. 8, the heating and drying device 3 is set above the circulating forming mesh belt device 1 and at the rear end of the flow orientation device, and has the function of heating and temperature control, and is used for drying the carbon fiber oriented felt.

The heating and drying device 3 includes a heating furnace body 301 , a heating lampshade 302 is installed in the heating furnace body 301 , and an infrared heating lamp 305 is installed in the heating lampshade 302 . The heating furnace body 301 is made of stainless steel and a heat insulating material layer is installed in the middle. The left damper plate 303 and the right damper plate 304 are arranged on the heating furnace body 301, and can move up and down to facilitate the operation of retrieving materials.

After the fiber oriented felt has been made into a certain area, it is precisely conveyed by the circular forming mesh belt, and the sprayed and stacked felt surface is sent to the heating and drying device 3, and the temperature in the heating furnace body 301 is set between 80-100 °C , and a negative pressure ventilation device is installed under the circular forming mesh belt to perform rapid drying and improve production efficiency.

In the process of heating and drying, the second spray stacking can continue to be repeated, so that the continuous operation of fiber orientation felting.

In addition, it should be understood that after reading the above description of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims (7)

1. The chopped carbon fiber orientation preparation device is characterized by comprising a flow pulp orientation device for controlling the orientation rate of chopped carbon fibers and the felting surface density;

the pulp flow orientation device comprises a pulp flow motion platform device and an orientation seat device;

the orientation seat device comprises an air cylinder mounting seat, a height adjusting air cylinder is arranged on the air cylinder mounting seat and connected with a rotating air cylinder seat, an angle-controllable swing air cylinder is arranged on the rotating air cylinder seat and connected with a head tube seat, a stock flow tube is fixed on the head tube seat, the top end of the stock flow tube is connected with a feeding valve body, the bottom end of the stock flow tube is connected with a left orientation nozzle plate and a right orientation nozzle plate, the left orientation nozzle plate and the right orientation nozzle plate are combined to form an orientation nozzle with a gradually-reduced taper section at the upper part and a parallel splint section at the lower part, and a damping coating is coated on the inner wall of the orientation nozzle;

the orientation seat device is arranged on the pulp flow motion platform device through a cylinder mounting seat.

2. The chopped carbon fiber orientation preparation device of claim 1, wherein the orientation nozzle is tapered to induce the orientation of the parallel splint, the gap of the parallel splint section is 1.2-1.5mm, and the height distance is 40-50mm.

3. The chopped carbon fiber orientation preparation device according to claim 1, wherein the pulp flow movement platform device comprises two X-axis sliding tables, sliding table plates are erected on the two X-axis sliding tables, Y-axis movement sliding tables are arranged on the sliding table plates, and the orientation seat device is arranged on the Y-axis movement sliding tables through cylinder mounting seats;

the two X-axis sliding tables are synchronously controlled by a first servo motor through the transmission of a connecting shaft, so that the sliding table plate and the Y-axis moving sliding table on the two X-axis sliding tables drive the whole orientation base device to move in the X-axis direction;

and the Y-axis moving sliding table is driven by a second servo motor through a ball screw to realize the displacement motion of the orientation seat device in the Y-axis direction.

4. The chopped carbon fiber orientation preparation device of claim 1, further comprising:

the conveying device is connected with the feeding valve body and is used for conveying the chopped carbon fiber slurry to the slurry flow orientation device at constant pressure;

the circulating forming mesh belt device is arranged below the flow stream orientation device, is provided with a plurality of air draft devices with negative pressure suction functions, is positioned below the circulating forming mesh belt, is used for dewatering and felting carbon fiber slurry, and can realize surface area type and continuous type orientation felting by matching with the flow stream motion platform device;

the heating and drying device is arranged above the circulating forming mesh belt device and is positioned at the rear end of the flow-slurry orientation device, has the heating and temperature-control function and is used for drying the carbon fiber orientation felt; a plurality of air draft devices are arranged below the circulating molding mesh belt and right below the heating and drying device.

5. The chopped carbon fiber orientation preparation device according to claim 4, wherein the endless forming mesh belt device comprises a frame body fixed with the endless forming mesh belt, and the frame body is provided with a traction device and a mesh belt deviation rectification control device for driving the endless forming mesh belt to move.

6. The chopped carbon fiber orientation preparation device according to claim 4, wherein the air draft device is used for sucking moisture on the circular forming mesh belt and comprises an air draft pipe and a water collecting cover device communicated with the air draft pipe;

the water collecting cover device comprises a plurality of water collecting grooves arranged below the circulating forming mesh belt, and an air guide device is arranged at the bottom of each water collecting groove and connected with an exhaust pipe arranged below the water collecting cover through a partition control pipeline valve body.

7. The chopped carbon fiber orientation preparation device according to claim 4, wherein the heating and drying device comprises a heating furnace body, a heating lampshade is arranged in the heating furnace body, and an infrared heating lamp is arranged in the heating lampshade;

the heating furnace body is made of stainless steel materials, and a heat insulation material layer is additionally arranged in the middle of the heating furnace body;

the air door plate is arranged on the heating furnace body and can move up and down.

Images