CN219564196U - Large gram weight carbon fiber prepreg production equipment - Google Patents

Abstract

The utility model discloses a production device of a large-gram-weight carbon fiber prepreg, which comprises a yarn withdrawal and spreading mechanism, a film impregnation mechanism, a lower layer support material replacement mechanism, an upper layer protection material winding mechanism and a finished product winding mechanism which are sequentially arranged front and back; the yarn withdrawal and spreading mechanism is used for leading out and uniformly dispersing the carbon fibers from the creel; the coating and impregnating mechanism is used for coating and impregnating the carbon fiber; the lower layer support material replacing mechanism and the upper layer protection material winding mechanism are used for replacing the release paper of the carbon fiber with a grid PE film or a PE flat film; the finished product winding mechanism is used for winding the carbon fiber. The equipment realizes the uniform unwinding tension and the uniform gram weight of the carbon fiber with low cost; automatically controlling friction force to realize constant unwinding tension; the product thickness control precision and the impregnation effect are good; the fold defect in the winding process is reduced, and meanwhile, the material cost can be reduced; the winding instability caused by the weight increase of the large gram weight carbon fiber is avoided, the prepreg bending in the cutting process is avoided, and the continuous production is ensured.

Description

Large gram weight carbon fiber prepreg production equipment

Technical Field

The utility model belongs to the technical field of continuous fiber reinforced composite production processes, and particularly relates to production equipment for a large-gram-weight carbon fiber prepreg.

Background

The present utility model relates to a composite part of a gluing and composite technology in a two-step method. The dry-method carbon fiber prepreg is also called carbon fiber prepreg, and is a composite material which is formed by processing materials such as carbon fiber yarns, epoxy resin, release paper and the like through the processes of coating, hot pressing, cooling, film coating, coiling and the like. Besides carbon fiber prepreg materials, there are also application modes such as vacuum infusion of carbon fiber fabrics, hand pasting of carbon fiber fabrics, winding of carbon fibers, pultrusion of carbon fibers and the like. Although the carbon fiber prepreg material has the highest cost, the carbon fiber prepreg material is widely applied to the fields of sports and leisure and aviation due to the convenience in operation, stable performance and the like. The carbon fiber prepreg is mainly used for producing products, the low gram weight prepreg is mainly used for producing racket, fishing rod and the like, the universal prepreg is mainly used for manufacturing bicycle frames and unmanned aerial vehicles, carbon fibers with the weight of less than 12K are used, the number of yarn bundles is large, tension change is small during yarn spreading and production, and the tension control and yarn spreading requirements are low. The prepreg has low gram weight, low requirement on resin impregnation capability, 3-4 pairs of composite press rolls in common industry, and the pressurizing mode is mainly an air pressure mode and a hydraulic mode, and does not need larger impregnation pressure. Besides, the impregnation speed is high, 5-10m/min due to low gram weight, the material is thin and easy to bend, and the method is easy to realize in the aspects of film coating and winding.

At present, the domestic carbon fiber production capacity is exponentially increased, but the processing technology cost of the product is high, the carbon fiber cannot be popularized and used in the civil market, and the reduction of the use cost of the carbon fiber is an urgent problem to be solved. When the existing device is used for production, the carbon fiber prepreg (more than 600g/m < 2 >) with large gram weight is difficult to impregnate due to the large thickness of the carbon fiber layer, the carbon fiber is difficult to control, the thickness is difficult to cover, the winding is easy to bend and fold, the production process is complex, and the requirement on production equipment is high.

Disclosure of Invention

The utility model aims to solve the problems in the background art and provides a production process and a device for a large-gram-weight carbon fiber prepreg.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the production equipment of the large-gram-weight carbon fiber prepreg comprises a yarn withdrawal and spreading mechanism, a film impregnation mechanism, a lower layer support material replacement mechanism, an upper layer protection material winding mechanism and a finished product winding mechanism which are sequentially arranged front and back; the yarn withdrawal and spreading mechanism is used for leading out and uniformly dispersing the carbon fibers from the creel; the coating and impregnating mechanism is used for coating and impregnating the carbon fiber; the lower layer support material replacing mechanism and the upper layer protection material winding mechanism are used for replacing the release paper of the carbon fiber with a grid PE film or a PE flat film; the finished product winding mechanism is used for winding the carbon fiber.

Further, the yarn withdrawing and spreading mechanism comprises a carbon fiber creel, a pore plate, a carbon yarn traction rubber press roll, a yarn comb and a yarn spreading roll; the carbon fiber creel, the pore plate and the carbon yarn traction rubber press roller are sequentially arranged front and back.

Further, the film covering and impregnating mechanism comprises an upper adhesive film unreeling device, a composite steel press roller, a lower adhesive film unreeling device and a heating plate; the upper adhesive film unreeling device and the lower adhesive film unreeling device are symmetrically distributed up and down and are arranged behind the yarn withdrawing and yarn expanding mechanism; the composite steel press roller and the heating plate are sequentially arranged behind the upper adhesive film unreeling device and the lower adhesive film unreeling device.

The upper adhesive film unreeling device and the lower adhesive film unreeling device are all existing devices, and each device consists of 3 guide rollers, a single-side deviation correcting detection sensor and 1 steel wheel through which chilled water is led.

Further, the lower layer support material replacing mechanism comprises a composite ceramic coating press roll, a lower release paper winding device, a primary film-covered rubber press roll and a lower grid PE film unreeling device; the composite ceramic coating press roll is arranged behind the film covering impregnation mechanism, and the lower release paper winding device is arranged below the composite ceramic coating press roll; the primary film-covered rubber press roll is arranged behind the composite ceramic coating press roll, and the lower grid PE film unreeling device is arranged below the primary film-covered rubber press roll.

The lower release paper winding device and the lower grid PE film unwinding device are all existing devices, the lower release paper winding device consists of a guide roller, a rubber removing roller, a single-side deviation correcting detection sensor and a winding wheel, and the lower grid PE film unwinding device consists of an unwinding wheel, a single-side deviation correcting detection sensor and 3 guide rollers.

Further, the upper protective material winding mechanism comprises an upper release paper winding device, a prepreg traction rubber press roll, an upper PE film unreeling device and a secondary film-covered rubber press roll; the prepreg traction rubber press roll is arranged at the rear of the lower layer support material replacement mechanism, the upper release paper winding device is arranged above the prepreg traction rubber press roll, the secondary film coating rubber press roll is arranged at the rear side of the prepreg traction rubber press roll, and the upper PE film unreeling device is arranged above the secondary film coating rubber press roll.

The upper release paper winding device and the upper PE film unwinding device are all existing devices, the upper release paper winding device consists of a guide roller, a rubber removing roller, a single-side deviation correcting detection sensor and a winding wheel, and the upper PE film unwinding device consists of an unwinding wheel, a single-side deviation correcting detection sensor and 3 guide rollers.

Further, the finished product winding mechanism comprises an automatic speed-reducing cutting device, a slitter edge cutting device and a finished product winding device; the waste edge cutting device is arranged behind the upper-layer protective material winding mechanism, is two pneumatic circular cutters, is arranged on two sides of the carbon fiber prepreg finished product transmitted by the upper-layer protective material winding mechanism, and is used for setting the interval between the pneumatic circular cutters according to the preset width condition; the automatic speed-reducing cutting device is arranged behind the waste edge cutting device and consists of an air cylinder, a linear guide rail and a cutting knife, wherein the linear guide rail is used for conveying a carbon fiber prepreg finished product, the cutting knife is perpendicular to the linear guide rail and is used for cutting the carbon fiber prepreg finished product, the cutting knife is connected with the air cylinder, the automatic speed-reducing is controlled by a PLC program, and the rotating speed of the traction roller is automatically reduced before the length of the finished product is reached; the finished product winding device is arranged behind the automatic speed-reducing cutting device and consists of two winding shafts capable of manually switching the winding shafts with the inflatable jackets and is used for winding the cut carbon fiber prepreg finished product.

Further, a detection mechanism is also arranged for detecting the thickness and uniformity of the carbon fiber; the detection mechanism comprises a detector and an appearance monitoring platform; the appearance monitoring platform is arranged behind the waste edge cutting device and consists of a high-brightness LED lamp tube and transparent toughened glass, the high-brightness LED lamp tube is arranged between the high-brightness LED lamp tube and the carbon fiber prepreg finished product, and the transparent toughened glass is arranged above the carbon fiber prepreg finished product; the detector is arranged between the prepreg traction rubber press roll and the secondary film coating rubber press roll.

Further, the position of each row of first shafts of the creel is provided with an ultrasonic sensor.

Further, the number of the composite steel press rolls is five, and the number of the heating plates is four; the five composite steel press rolls are sequentially arranged behind the upper adhesive film unreeling device and the lower adhesive film unreeling device, and the four heating plates are sequentially arranged between the five composite steel press rolls.

Further, an ice plate is arranged between the tectorial membrane impregnating mechanism and the composite ceramic coating compression roller, and the ice plate is also arranged behind the primary tectorial membrane rubber compression roller.

Compared with the prior art, the utility model has the beneficial effects that: 1) According to the production process and the device for the large-gram-weight carbon fiber prepreg, disclosed by the utility model, the simple yarn withdrawing device, the added rubber pinch roller and the adjustable grate can realize the adjustment of unwinding tension and the uniformity of gram weight of the carbon fiber at low cost; 2) The ultrasonic sensor monitors the diameter of the yarn shaft in real time, automatically controls friction force according to the torque conversion coefficient, and realizes constant unwinding tension; 3) The gap is controlled by using a 405mm diameter high-hardness steel wheel and a servo screw rod, so that the influence of rebound force in the pressing process is reduced, and the thickness control precision and the impregnation effect of the product are ensured; 4) The lower release paper is added to replace the grid PE film, so that the stripping force of the prepreg and the protective material is reduced, the bending of the carbon fiber is facilitated, the fold defect in the winding process is reduced, and the material cost can be reduced; 5) The winding device with double supports and automatic cutting and continuous reel changing is adopted, so that unstable winding caused by the increase of weight of large gram weight carbon fibers is avoided, automatic speed reduction cutting is realized, prepreg bending in the cutting process is avoided, and continuous production is ensured.

In order to more clearly describe the functional characteristics and structural parameters of the present utility model, the following description is made with reference to the accompanying drawings and detailed description.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of a large gram weight carbon fiber prepreg production device;

FIG. 2 is a schematic diagram of a large gram weight carbon fiber prepreg production facility workflow;

the reference numerals in the drawings are: the device comprises a carbon fiber creel 1, an ultrasonic sensor 2, an orifice plate 3, a carbon yarn traction rubber press roll 4, a yarn comb 5, a yarn spreading roll 6, an upper adhesive film unreeling device 7, a composite steel press roll 8, a lower adhesive film unreeling device 9, a heating plate 10, an ice plate 11, a composite ceramic coating press roll 12, a lower release paper reeling device 13, a primary film coating rubber press roll 14, a lower grid PE film unreeling device 15, an upper release paper reeling device 16, a prepreg traction rubber press roll 17, a detector 18, an upper PE film unreeling device 19, a secondary film coating rubber press roll 20, an appearance monitoring platform 21, an automatic speed reduction cutting device 22, a slitter edge cutting device 23 and a finished product reeling device 24.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, a carbon fiber creel 1, an orifice plate 3, a carbon yarn traction rubber press roll 4, a yarn comb 5 and a yarn spreading roll 6 are arranged in sequence. The upper adhesive film unreeling device 7 and the lower adhesive film unreeling device 9 are symmetrically distributed up and down and are arranged behind the yarn spreading roller 6; the composite steel press roller 8 and the heating plate 10 are sequentially arranged behind the upper adhesive film unreeling device 7 and the lower adhesive film unreeling device 9. The five composite steel press rolls 8 are sequentially arranged behind the upper adhesive film unreeling device 7 and the lower adhesive film unreeling device 9, and the four heating plates 10 are sequentially arranged between the five composite steel press rolls 8. A first ice plate 11 is arranged behind the fifth composite steel pressing roller 8, a composite ceramic coating pressing roller 12 is arranged behind the first ice plate 11, and a lower release paper winding device 13 is arranged below the composite ceramic coating pressing roller 12; the primary film-covered rubber press roll 14 is arranged behind the composite ceramic coating press roll 12, and the lower grid PE film unreeling device 15 is arranged below the primary film-covered rubber press roll 14. The second ice plate 11 is arranged behind the primary laminating rubber press roller 14, the prepreg traction rubber press roller 17 is arranged behind the second ice plate 11, the upper release paper winding device 16 is arranged above the prepreg traction rubber press roller 17, the secondary laminating rubber press roller 20 is arranged at the rear side of the prepreg traction rubber press roller 17, and the upper PE film unreeling device 19 is arranged above the secondary laminating rubber press roller 20. The waste edge cutting device 23 is arranged behind the secondary film-covered rubber press roller 20, the automatic speed-reducing cutting device 22 is arranged behind the waste edge cutting device 23, and the finished product winding device 24 is arranged behind the automatic speed-reducing cutting device 22.

Specifically, in this embodiment, the apparatus is further provided with a detection mechanism for detecting the thickness and uniformity of the carbon fiber; the detection mechanism comprises a detector 18 and an appearance monitoring platform 21; the appearance monitoring platform 21 is arranged behind the scrap edge cutting device 23, and the detector 18 is arranged between the prepreg traction rubber press roll 17 and the secondary film coating rubber press roll 20.

Specifically, in the present embodiment, the position of each row of the first shafts of the creel 1 is provided with the ultrasonic sensor 2.

As shown in fig. 2, the workflow and principle of the device are as follows: after being led out from the creel, the carbon fiber passes through the yarn guiding porcelain eye, then passes through the pore plate and the carbon yarn to drag the rubber press roller and the yarn comb, and enters the yarn spreading roller. The upper adhesive film and the lower adhesive film pass through the ice wheel and then are stripped to form PE films, then the lower adhesive film, the carbon fibers and the upper adhesive film pass through the first group of composite pressing wheels sequentially and are spliced with the PET films unreeled from the winding wheel sequentially, the PET films are pulled by the rubber wheel to drive the adhesive films and the carbon fibers to continuously pass through the subsequent composite pressing roller and the rubber roller until part of the adhesive films is wound on the winding wheel, after the carbon fibers are fully impregnated, the lower release paper is replaced by the grid PE film, the upper release paper is replaced by the PE flat film, the slitter edges are cut off, and finally the adhesive films are wound according to the fixed length.

Specifically, in the present embodiment, the creel withdraws yarn: carbon fibers are led out from the creel and sequentially pass through the pore plate and the carbon yarn traction rubber press roller, so that the carbon fibers can be orderly and uniformly distributed in the preliminary step. The tension of each yarn can be controlled by independently adjusting the tension of the friction belt at one end of the creel, and simultaneously, all the friction belts are interconnected through the tension belt at the upper part of the creel, so that the synchronous adjustment of the unwinding tension of all the yarn shafts in the creel can be realized. An ultrasonic sensor is arranged at each row of first shaft position of the creel, the diameter of the carbon fiber yarn is detected in real time, automatic adjustment of unwinding tension of the carbon fiber yarn shaft is automatically realized according to a plurality of groups of gradient conversion relations of the set diameter and tension, and finally, the effective stable unwinding tension of the large-tow carbon fiber is realized, and the problem of tension change caused by larger moment change in the unwinding process of the large-tow carbon fiber is solved.

Specifically, in the present embodiment, the yarn is spread by vibration: the carbon yarn passes through a yarn comb with variable width and movement, the width of the carbon yarn entering the yarn spreading device is adjusted, carbon fibers can be further evenly dispersed, and then the carbon yarn is overlapped into cloth through seven yarn spreading rollers. Seven yarn stretching rollers of the carbon fiber yarn stretching device sequentially comprise fixing, up-and-down vibration, fixing, left-and-right vibration and fixing, the fixed yarn stretching rollers can move up and down, and adjusting the wrap angle of the carbon fiber and the yarn spreading roller to control the yarn spreading force, and simultaneously, utilizing the friction between the rough surface of the vibration roller and the carbon fiber to force the carbon fiber to be fully and uniformly dispersed.

Specifically, in the present embodiment, the resin film is covered with: the upper adhesive film unreeling device and the lower adhesive film unreeling device control unreeling tension through tension rollers, and peel off PE films after passing through an ice wheel, and the residual resin films are coated on two sides of the carbon fiber cloth. The unwinding directions of the upper adhesive film and the lower adhesive film are controlled by the deviation corrector, so that the upper adhesive film and the lower adhesive film are ensured to be aligned in parallel and coincide with the central line of the carbon fiber cloth.

Specifically, in the present embodiment, the hot press impregnation: the adhesive film and the carbon fiber pass through the composite steel press roller and the heating plate, and the material forms an adhesive film, carbon fiber and adhesive film three-layer stable structure at a certain temperature and pressure, and the impregnation degree and thickness are ensured to meet the product requirement continuously four times.

Specifically, in the present embodiment, the lower layer support material is replaced: after the temperature of the prepreg is reduced by the ice plate, the lower release paper is peeled off by the composite ceramic coating press roller, rolled by the lower release paper rolling device, and placed by the lower grid PE film unreeling device and subjected to one-time laminating rubber press roller laminating process. The lower release paper is replaced by the grid PE film, so that the contact area of the protective material and the prepreg is reduced, the carbon fiber production process can be ensured not to be deformed, the bonding force between the protective material and the prepreg can be reduced, and the carbon fiber curl caused by different deformation characteristics in the large gram weight prepreg winding process is avoided. The problems of high resin content and high viscosity on the surface with large gram weight are solved.

Specifically, in this embodiment, the upper release paper collection is replaced with a PE flat film: the carbon fiber is rolled by the prepreg traction rubber press roll and the upper release paper rolling device in sequence, the upper PE film unreeling device unreels and the secondary film-covered rubber press roll is covered, the PE plane ensures that the carbon fiber production process is not polluted, and the surface defect of the appearance monitoring platform is convenient to observe. After PE film is replaced, the high-gram-weight prepreg is large in heat conductivity coefficient and fast in heat dissipation due to the fact that the carbon fiber layer is thick, the PE film is easy to separate from the prepreg, a heating steel wheel is added subsequently, the surface viscosity of the prepreg is kept, and the PE film is prevented from falling off.

Specifically, in the present embodiment, the online thickness detection: the thickness and uniformity of the carbon fiber are tested by the detector, and the resin content of the prepreg and the size of the composite material are ensured.

Specifically, in the present embodiment, the double support continuously winds: firstly, cutting off the waste edges through a waste edge cutting device, determining the width of a finished product, and then automatically cutting according to a metering device to meet the fixed-length cutting of the product, thereby reducing the workload of operators; and finally, continuously winding by a double-support finished product winding device. The double-support manual reel changing continuous winding, and the upper support reel has larger stress intensity than the single cantilever reel; the automatic speed-reducing cutting is adopted, so that the excessive speed is avoided, and the prepreg can be seriously bent and damaged in the cutting stop time, thereby improving the yield.

Specifically, in this embodiment, the creel is located at the forefront end of the device, and the standard 3-inch paper tube can be used for the creel spool to use the engineering plastic shaft to expand and contract the spring, and the paper tube with the diameter of 76-80mm and the length of 280-300mm is suitable. Each unwinding position corresponds to one stainless steel parallel roller, so that each layer of yarns can be enabled to be quickly parallel, and meanwhile, the yarns are enabled not to be wound with other layers of yarns in a crossing manner. The unwinding tension of each shaft is provided by an end friction belt and the unwinding shaft friction force, and the friction force is realized by adjusting the tension of the tension spring. The whole tension can be adjusted through the hand stretcher at the tail of the creel and the motor drive, and the tension can be obtained through the conversion of the tension of the puller. The tension control range of each unwinding shaft is 1N-3N, and the unwinding shaft is regularly corrected by weights of 50-100 g. In addition, the diameter of the yarn shaft is monitored in real time through an ultrasonic detector, and the friction force is adjusted according to the moment, so that the constant unwinding tension is automatically realized.

Specifically, in this embodiment, the yarn spreading device is located between the yarn comb and the composite steel roller, seven fixed yarn spreading rollers are used, and the surface is electroplated with a roughened coating, and the diameter is 100mm. The three fixed yarn spreading rollers can vibrate and are respectively positioned at the second (vertical vibration), the fourth (horizontal vibration) and the sixth (horizontal vibration) positions. Four non-vibration yarn spreading rollers can move up and down, and two ends of the non-vibration yarn spreading rollers synchronously move up and down through a coupler. All seven spreader rolls can be heated to 120 ℃. In order to ensure yarn spreading efficiency, before entering the yarn spreading, the yarn tension is balanced by a carbon yarn traction rubber compression roller. In order to ensure the even distribution of the yarns, the yarns pass through a yarn comb with telescopic width before entering the yarn spreading.

Specifically, in the present embodiment, the composite steel nip roll is located between the spreader roll and the rubber nip roll. The diameter of each pair of press rolls is 405mm, the surface hardness is HRC63 + -5, the surface runout of the steel rolls is + -5 um, and the heating of the heat conduction oil meets the highest heating temperature of 130 ℃. The servo motors at the two ends control the gap of the steel roller, the asynchronous adjustment realizes the parallel adjustment of the steel roller, the adjustment of the gap and the pressure is synchronously realized, the screw rod adjustment avoids rebound due to the toughness of the product, and meanwhile, the enough pressure is ensured, and the maximum pressure is 42kg/cm.

Specifically, in this embodiment, the primary laminating rubber press roller is located between the primary stripping rubber press roller and the prepreg traction rubber press roller, and is used for laminating the PE film with the lower grid, the lower roller is a steel roller, the upper roller is a rubber roller, the steel roller is filled with hot water, and can be heated to 50 ℃, and the pressure is realized by adjusting gaps through the servo motors at two ends and the screw rods.

Specifically, in this embodiment, the finished product coiling mechanism is located the final end of equipment, and the rolling physiosis axle adopts on general 3 inches steel physiosis axle, adds two sections 12 inches tile physiosis axles, can guarantee under the prerequisite of rolling stability, reduces the weight of the physiosis axle, increases the rolling quantity. The two ends of the inflatable shaft are in double-support mode, so that uneven winding end faces caused by distortion deformation due to cantilever winding are avoided. The stations can be replaced, one can be rolled, and the other can be replaced.

Example 1

The production process and the device of the large-gram-weight carbon fiber prepreg can realize the production of the low-cost large-gram-weight carbon fiber prepreg, the specification of the product is 1000mm wide, and the gram weight is more than 600 g. The device dimensions 33000X 7000X 3000mm.

The wrap angle of the yarn spreading roller ranges from 0 to 120 degrees, the vibration frequency of the vibration roller is 10Hz at the highest, and the yarn spreading roller is continuously adjustable.

The composite steel press roller is 1600mm long, 405mm in diameter, HRC 63+ -5 in surface hardness, + -5 um in steel roller surface runout, 0-50mm in gap adjustment range, 3um in adjustment precision and 1um in display precision.

The prepreg pulls the rubber press roll, the width is 1600mm, the diameter is 500mm, and the speed is 0-15 m/min.

The waste edge cutting device is adjustable in position within the range of 1000mm, three pneumatic circular knives are arranged, and the middle pair of the waste edge cutting device can cut prepreg according to requirements.

And an automatic speed-reducing cutting device for automatically cutting after the speed is reduced to 0.5 m/min.

The finished product winding device has a width of 1600mm, a diameter of 300mm and a speed of 0-15 m/min, and can bear the weight of 300kg of products.

In the specific implementation process, personnel are responsible for replacing and unreeling, process parameters such as tension, impregnation temperature, impregnation pressure, production speed, production length and the like are set, finished products are rolled and replaced, and 6 persons can operate stably.

Example 2

Production process of large-gram-weight carbon fiber prepreg, and preparation of 600g/m by adopting general prepreg resin and 24K T300-grade domestic carbon fiber ² A prepreg. The viscosity of the resin is 13000-23000 mPa.s at 70 ℃, the gel time is 750-950s at 120 ℃, and the gram weight of the coated adhesive film is 310+/-6 g/m ² The method comprises the steps of carrying out a first treatment on the surface of the 375 yarns are used for the carbon fiber linear density 1.6g/m and the 1000mm wide prepreg, and the spreading vibration frequencies are respectively 3Hz (up-down vibration), 3Hz (first left-right vibration) and 1Hz (second left-right vibration); the temperature of the 5 pairs of press rolls is 120 ℃, the pressure is 0.8kg/cm,1.5kg/cm,2kg/cm,4kg/cm and 4kg/cm at one time, and the early-stage pressure cannot be too high, so that glue is easy to overflow; the temperature of the 4 heating plates is 120 ℃, and the temperature of the ice wheels and the ice plates is 10 ℃ or 3 ℃ lower than the room temperature; the temperature of the two film laminating wheels is 50 ℃, and the grid film adopts 40-60g/m ² The production speed is 4m/min, the automatic cutting setting is automatically reduced to 0.5m/min, the winding end face is neat, the surface is smooth, and the gram weight is 980+/-30 g/m ² Within the inner part.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The production equipment for the large-gram-weight carbon fiber prepreg is characterized by comprising a yarn withdrawal and spreading mechanism, a film impregnation mechanism, a lower layer support material replacement mechanism, an upper layer protection material winding mechanism and a finished product winding mechanism which are sequentially arranged front and back; the yarn withdrawal and spreading mechanism is used for leading out and uniformly dispersing the carbon fibers from the creel; the coating and impregnating mechanism is used for coating and impregnating the carbon fiber; the lower layer support material replacing mechanism and the upper layer protection material winding mechanism are used for replacing the release paper of the carbon fiber with a grid PE film or a PE flat film; the finished product winding mechanism is used for winding the carbon fiber.

2. The production equipment of the large-gram-weight carbon fiber prepreg according to claim 1, wherein the yarn withdrawal and spreading mechanism comprises a carbon fiber creel (1), an orifice plate (3), a carbon yarn traction rubber press roll (4), a yarn comb (5) and a yarn spreading roll (6); the carbon fiber creel (1), the pore plate (3) and the carbon yarn traction rubber press roller (4), and the yarn comb (5) and the yarn spreading roller (6) are sequentially arranged front and back.

3. The production equipment of the large-gram-weight carbon fiber prepreg according to claim 1, wherein the film covering and impregnating mechanism comprises an upper adhesive film unreeling device (7), a composite steel press roll (8), a lower adhesive film unreeling device (9) and a heating plate (10); the upper adhesive film unreeling device (7) and the lower adhesive film unreeling device (9) are symmetrically distributed up and down and are arranged behind the yarn withdrawing and yarn expanding mechanism; the composite steel press roller (8) and the heating plate (10) are sequentially arranged behind the upper adhesive film unreeling device (7) and the lower adhesive film unreeling device (9).

4. The production equipment of the large-gram-weight carbon fiber prepreg according to claim 1, wherein the lower-layer support material replacement mechanism comprises a composite ceramic coating press roll (12), a lower release paper winding device (13), a primary film-covered rubber press roll (14) and a lower grid PE film unreeling device (15); the composite ceramic coating press roll (12) is arranged behind the film covering impregnation mechanism, and the lower release paper winding device (13) is arranged below the composite ceramic coating press roll (12); the primary film-covered rubber press roll (14) is arranged behind the composite ceramic coating press roll (12), and the lower grid PE film unreeling device (15) is arranged below the primary film-covered rubber press roll (14).

5. The large-gram-weight carbon fiber prepreg production equipment according to claim 1, wherein the upper protective material winding mechanism comprises an upper release paper winding device (16), a prepreg traction rubber press roll (17), an upper PE film unreeling device (19) and a secondary film-coating rubber press roll (20); the prepreg traction rubber press roll (17) is arranged at the rear of the lower layer support material replacement mechanism, the upper release paper winding device (16) is arranged above the prepreg traction rubber press roll (17), the secondary film coating rubber press roll (20) is arranged at the rear side of the prepreg traction rubber press roll (17), and the upper PE film unreeling device (19) is arranged above the secondary film coating rubber press roll (20).

6. The large-gram-weight carbon fiber prepreg production equipment according to claim 5, wherein the finished product winding mechanism comprises an automatic speed-reducing cutting device (22), a slitter edge cutting device (23) and a finished product winding device (24); the slitter edge cutting device (23) is arranged behind the upper-layer protective material winding mechanism, the slitter edge cutting device (23) is two pneumatic circular cutters, is arranged on two sides of a carbon fiber prepreg finished product transmitted by the upper-layer protective material winding mechanism, and is used for setting the interval between the pneumatic circular cutters according to the preset width condition; the automatic speed-reducing cutting device (22) is arranged behind the waste edge cutting device (23), the automatic speed-reducing cutting device (22) consists of an air cylinder, a linear guide rail and a cutting knife, the linear guide rail is used for conveying carbon fiber prepreg finished products, the cutting knife is perpendicular to the linear guide rail and is used for cutting the carbon fiber prepreg finished products, and the cutting knife is connected to the air cylinder; the finished product winding device (24) is arranged behind the automatic speed-reducing cutting device (22), and the finished product winding device (24) consists of two winding shafts capable of manually switching the winding shafts with the inflatable jackets and is used for winding the cut carbon fiber prepreg finished product.

7. The large-gram-weight carbon fiber prepreg production equipment according to claim 6, wherein a detection mechanism is further provided for detecting the thickness and uniformity of the carbon fiber; the detection mechanism comprises a detector (18) and an appearance monitoring platform (21); the appearance monitoring platform (21) is arranged behind the waste edge cutting device (23), the appearance monitoring platform (21) is composed of a high-brightness LED lamp tube and transparent toughened glass, the high-brightness LED lamp tube is arranged below the carbon fiber prepreg finished product, and the transparent toughened glass is arranged between the high-brightness LED lamp tube and the carbon fiber prepreg finished product; the detector (18) is arranged between the prepreg traction rubber press roll (17) and the secondary film coating rubber press roll (20).

8. A production facility for high gram weight carbon fiber prepregs according to claim 2, characterized in that the position of each row of the first axis of the creel (1) is provided with an ultrasonic sensor (2).

9. A large gram weight carbon fiber prepreg production equipment according to claim 3, wherein the number of the composite steel press rolls (8) is five, and the number of the heating plates (10) is four; the five composite steel press rolls (8) are sequentially arranged behind the upper adhesive film unreeling device (7) and the lower adhesive film unreeling device (9), and the four heating plates (10) are sequentially arranged between the five composite steel press rolls (8).

10. The production equipment of the large-gram-weight carbon fiber prepreg according to claim 4, wherein an ice plate (11) is arranged between the film coating impregnation mechanism and the composite ceramic coating press roll (12), and the ice plate (11) is also arranged behind the primary film coating rubber press roll (14).