阅读说明：本技术 一种风电叶片碳纤维梁制作工艺 (Manufacturing process of carbon fiber beam of wind power blade ) 是由 张力赫 张森银 张欣磊 于 2021-06-25 设计创作，主要内容包括：本发明公开了一种风电叶片碳纤维梁制作工艺,包括如下步骤,S1、碳纤维预浸料低温储存；S2、碳纤维浸料解冻；S3、碳纤维预浸料进行铺层,首先模具预热28℃-30℃,预热后在模具上铺放免打磨布,随后在免打磨布上铺设碳纤维预浸料；S4、检验真空度和气密性；S5、碳纤维预浸料固化。本发明精心设计工艺步骤和每个步骤中的参数和施工要点,对工艺整体进行提升改良,便于实施,得到产品质量稳定量可靠。(The invention discloses a manufacturing process of a carbon fiber beam of a wind power blade, which comprises the following steps of S1, storing carbon fiber prepreg at low temperature; s2, unfreezing the carbon fiber impregnated material; s3, laying carbon fiber prepreg, preheating a mould by 28-30 ℃, laying polishing-free cloth on the mould after preheating, and laying the carbon fiber prepreg on the polishing-free cloth; s4, checking the vacuum degree and the air tightness; and S5, curing the carbon fiber prepreg. The invention elaborately designs the process steps and the parameters and construction key points in each step, improves the whole process, is convenient to implement, and obtains the product with stable quality and reliable quality.)

1. A manufacturing process of a carbon fiber beam of a wind power blade is characterized by comprising the following steps: comprises the following steps of (a) carrying out,

s1, storing the carbon fiber prepreg at low temperature;

s2, unfreezing the carbon fiber impregnated material;

s3, laying carbon fiber prepreg, preheating a mould by 28-30 ℃, laying polishing-free cloth on the mould after preheating, and laying the carbon fiber prepreg on the polishing-free cloth;

s4, checking the vacuum degree and the air tightness;

and S5, curing the carbon fiber prepreg.

2. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 1, wherein: in the step S1, the carbon fiber prepreg has a shelf life of less than 20 days at room temperature, or a shelf life of 180 days at a temperature of less than or equal to 0 ℃, or a shelf life of 360 days at a temperature of less than or equal to-18 ℃.

3. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 1, wherein: in the step S2, the carbon fiber prepreg is put into a temperature return room 24 hours in advance to be heated, and the temperature of the temperature return room is 30-35 ℃.

4. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 1, wherein: in the step S3, the mold is preheated by 30 ℃.

5. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 1, wherein: in the step S3, when the non-polishing cloth is laid, the non-polishing cloth with the adhesive is laid on the mold, and the non-polishing cloth is used to stick the mold, so that it is ensured that no air or air bubbles are generated.

6. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 1, wherein: in the step S3, when the carbon fiber prepreg is laid, the carbon fiber prepreg is rolled on a cloth spreading vehicle, the surface temperature of the carbon fiber prepreg at room temperature is measured to reach 22 ± 4 ℃, the temperature difference between the inner roll and the outer roll is measured to be less than or equal to 3 ℃, the parameter setting of the cloth spreading vehicle is adjusted, the tension is output by 30%, and the speed is 5% -10%.

7. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 1 or 6, wherein: in step S3, when the carbon fiber prepreg is laid, the carbon fiber prepreg is laid along the length direction of the mold, the two sides of the carbon fiber prepreg are aligned with the edges of the cloth layer, the two ends of the cloth layer are aligned with the product line, and the carbon fiber prepreg is compacted and adhered to the mold in the laying process.

8. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 7, wherein: the two sides of the cloth spreading advancing direction are provided with cloth spreading stations, and the cloth spreading stations comprise the following parts:

a station A: the lifting mechanism is positioned on one side of the cloth spreading advancing direction, is responsible for lifting the travelling crane and advancing the cloth spreading vehicle, and advances synchronously with the cloth spreading vehicle;

b station and C station: the cloth layer trimming device is arranged behind the station A and positioned on two sides in the cloth paving advancing direction, and is responsible for aligning the edges of the cloth layer in the cloth paving process, aligning the two ends of the cloth layer with the product lines, and trimming the cloth layer after cloth paving;

d, station: the cloth layer compacting device is positioned behind the station B or the station C and is responsible for compacting the middle position of the cloth layer and moving the cloth layer towards the cloth paving advancing direction;

e station and F station: the cloth pushing device comprises a D station, an E station, an F station, a cloth pushing device and a cloth pushing device, wherein the D station is positioned behind the D station, the E station is positioned on two sides in the cloth paving advancing direction and positioned on one side of the rear edge, the F station is positioned on one side of the front edge and is responsible for cloth pushing, the E station pushes the cloth from the middle to the front edge, and the F station pushes the cloth from the middle to the rear edge;

g station and H station: the cloth driving device is respectively positioned behind the station E and the station F and is responsible for repeatedly driving cloth, G drives cloth from the middle to the front edge, H drives cloth from the middle to the rear edge, after each layer is laid, the cloth is checked again from the front to the rear, and the cloth is repeatedly driven in an area which is not leveled;

i station: and the material roll is responsible for tearing off the isolating films on the upper surface and the lower surface of the material roll.

9. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 8, wherein: the station D adopts an iron mop to operate, the iron mop comprises a mop base plate, an extension bar and a connecting piece, and the extension bar is connected to the upper surface of the mop base plate through the connecting piece.

10. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 9, wherein: a pair of coaxial circular tubes is arranged on the upper surface of the mop bottom plate, and the circular tubes are arranged at intervals along the long axis direction of the mop bottom plate; the connecting piece is the T type, sets up between a pair of pipe, include that both ends insert the horizontal spliced pole of both sides pipe respectively and follow the vertical spliced pole that stretches out in the middle part of the horizontal spliced pole, vertical spliced pole is followed a pair of stretch out between the pipe, and with the extension bar is connected.

11. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 10, wherein: the terminal flat plug that is of vertical spliced pole, extension bar one end is seted up and is supplied plug male socket, the plug inserts socket adopts the fastener to fix.

12. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 8, wherein: e, H station adopts the round brush operation, the round brush includes handle, dabber and cylinder, the coaxial cover of cylinder is established on the dabber, the dabber both ends surpass the cylinder and with the handle is connected.

13. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 12, wherein: the two ends of the mandrel are sleeved with bushes, bearings are sleeved on the bushes, and the bearings are connected to the inner side of the roller.

14. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 13, wherein: the handle includes connector and handle body, the connector includes both sides fork arm and connects connecting rod between the fork arm, handle body one end is connected the connecting rod middle part, the other end is equipped with application of force portion.

15. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 8, wherein: and 4, after paving, sequentially paving polishing-free cloth and a porous isolating membrane on the carbon fiber prepreg, placing a flange on the side surface of the product to prevent the cloth layer from being deformed by atmospheric pressure in the vacuumizing process, paving auxiliary materials, paving a first layer of vacuum bag membrane, verifying the vacuum degree and the air tightness, finally paving a flow guide net, paving a second layer of vacuum bag membrane, and verifying the vacuum degree and the air tightness again.

16. The manufacturing process of the carbon fiber beam of the wind power blade as claimed in claim 1, wherein: in the step S5, the carbon fiber beam is fully covered with insulation cotton, and the mold heating system is turned on to perform the following temperature raising and constant temperature operation:

the method comprises the following steps: heating from 30 deg.C to 35 deg.C, and taking 180 min;

step two: heating from 35 deg.C to 50 deg.C, and taking 60 min;

step three: heating from 50 deg.C to 60 deg.C, and taking 120 min;

step four: heating from 60 deg.C to 80 deg.C, and taking 120 min;

step five: heating from 80 deg.C to 90 deg.C, and taking 60 min;

step six: heating from 90 deg.C to 100 deg.C, and taking 60 min;

step seven: heating from 100 deg.C to 110 deg.C, and taking 30 min;

step eight: the temperature is raised from 110 ℃ to 120 ℃ and the time is 150 min.

Technical Field

The invention relates to a manufacturing process of a carbon fiber beam of a wind power blade.

Background

With the development of the blade industry, in order to improve the wind power generation efficiency and adapt to the wind power price-balancing policy, the trend of large-scale and light-weight blades is more obvious, the load is increased due to the increase of the weight of the large-scale blades, the traditional glass fiber reinforced plastic main beam becomes one of the important factors restricting the large-scale and light-weight development of the blades, the main beam made of a material with higher rigidity, high specific strength and high specific tensile modulus instead of a glass fiber reinforced plastic composite material is found to become a consensus in the industry, and the rigidity, specific strength and specific tensile modulus of a carbon fiber composite material are better than those of the glass fiber reinforced plastic composite material, so that the carbon fiber composite material is a preferred material for large-scale and light-weight wind power blades.

The carbon fiber prepreg is a material of a low-temperature curing process, and reacts at room temperature, and has low viscosity at a low temperature and high viscosity and rapid reaction at an excessively high temperature. In the production of the carbon fiber beam, the carbon fiber prepreg needs to be stored at low temperature, is thawed during production, is laid on a mold layer by layer, is subjected to vacuum and air tightness inspection, and is finally cured and the like.

Due to the particularity of the carbon fiber prepreg, the product quality is easy to cause problems in the production process because the temperature and the production rhythm are not well mastered, so a set of system and a strict production process need to be designed to achieve the high-quality production effect.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a manufacturing process of a carbon fiber beam of a wind power blade.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a manufacturing process of a carbon fiber beam of a wind power blade is characterized by comprising the following steps,

s1, storing the carbon fiber prepreg at low temperature;

s2, unfreezing the carbon fiber impregnated material;

s3, laying carbon fiber prepreg, preheating a mould by 28-30 ℃, laying polishing-free cloth on the mould after preheating, and laying the carbon fiber prepreg on the polishing-free cloth;

s4, checking the vacuum degree and the air tightness;

and S5, curing the carbon fiber prepreg.

Preferably, in the step S1, the carbon fiber prepreg has a shelf life of less than 20 days at room temperature, or a shelf life of 180 days at a temperature of 0 ℃ or less, or a shelf life of 360 days at a temperature of-18 ℃ or less.

Preferably, in the step S2, the carbon fiber prepreg is put into a temperature return room 24 hours in advance to be heated, and the temperature of the temperature return room is 30-35 ℃.

Preferably, in the step S3, the mold is preheated by 30 ℃.

Preferably, in step S3, when the non-polishing cloth is laid, the non-polishing cloth with glue is laid on the mold, and the non-polishing cloth is used to stick to the mold, so as to ensure that no air or air bubbles are generated.

Preferably, in the step S3, when the carbon fiber prepreg is laid, the carbon fiber prepreg is rolled on a cloth spreading vehicle, the surface temperature of the carbon fiber prepreg at room temperature is measured to reach 22 ± 4 ℃, the temperature difference between the inner roll and the outer roll is measured to be less than or equal to 3 ℃, the parameter setting of the cloth spreading vehicle is adjusted, the tension is output by 30%, and the speed is 5% -10%.

Preferably, in step S3, when the carbon fiber prepreg is laid, the carbon fiber prepreg is laid along the length direction of the mold, two sides of the carbon fiber prepreg are aligned with edges of the cloth layer, two ends of the cloth layer are aligned with the product line, and the carbon fiber prepreg is compacted and adhered to the mold during the laying process.

Preferably, the two sides of the cloth spreading advancing direction are provided with cloth spreading stations, and the cloth spreading stations comprise the following parts:

a station A: the lifting mechanism is positioned on one side of the cloth spreading advancing direction, is responsible for lifting the travelling crane and advancing the cloth spreading vehicle, and advances synchronously with the cloth spreading vehicle;

b station and C station: the cloth layer trimming device is arranged behind the station A and positioned on two sides in the cloth paving advancing direction, and is responsible for aligning the edges of the cloth layer in the cloth paving process, aligning the two ends of the cloth layer with the product lines, and trimming the cloth layer after cloth paving;

d, station: the cloth layer compacting device is positioned behind the station B or the station C and is responsible for compacting the middle position of the cloth layer and moving the cloth layer towards the cloth paving advancing direction;

e station and F station: the cloth pushing device comprises a D station, an E station, an F station, a cloth pushing device and a cloth pushing device, wherein the D station is positioned behind the D station, the E station is positioned on two sides in the cloth paving advancing direction and positioned on one side of the rear edge, the F station is positioned on one side of the front edge and is responsible for cloth pushing, the E station pushes the cloth from the middle to the front edge, and the F station pushes the cloth from the middle to the rear edge;

g station and H station: the cloth driving device is respectively positioned behind the station E and the station F and is responsible for repeatedly driving cloth, G drives cloth from the middle to the front edge, H drives cloth from the middle to the rear edge, after each layer is laid, the cloth is checked again from the front to the rear, and the cloth is repeatedly driven in an area which is not leveled;

i station: and the material roll is responsible for tearing off the isolating films on the upper surface and the lower surface of the material roll.

Preferably, the station D adopts an iron mop for operation, the iron mop comprises a mop base plate, an extension bar and a connecting piece, and the extension bar is connected to the upper surface of the mop base plate through the connecting piece.

Preferably, a pair of coaxial circular tubes is arranged on the upper surface of the mop bottom plate, and the pair of circular tubes are arranged at intervals along the long axis direction of the mop bottom plate; the connecting piece is the T type, sets up between a pair of pipe, include that both ends insert the horizontal spliced pole of both sides pipe respectively and follow the vertical spliced pole that stretches out in the middle part of the horizontal spliced pole, vertical spliced pole is followed a pair of stretch out between the pipe, and with the extension bar is connected.

Preferably, the tail end of the vertical connecting column is a flat plug, one end of the extension bar is provided with a socket for inserting the plug, and the plug is inserted into the socket and fixed by a fastener.

Preferably, the E, H station adopts the round brush operation, the round brush includes handle, dabber and cylinder, the cylinder is coaxial to be established on the dabber, the dabber both ends surpass the cylinder and with the handle is connected.

Preferably, bushings are sleeved at two ends of the mandrel, bearings are sleeved on the bushings, and the bearings are connected to the inner side of the roller.

Preferably, the handle includes connector and handle body, the connector includes both sides fork arm and connects connecting rod between the fork arm, handle body one end is connected the connecting rod middle part, the other end is equipped with application of force portion.

Preferably, in the step 4, after the laying is finished, sequentially laying polishing-free cloth and a perforated isolating membrane on the carbon fiber prepreg, placing a flange on the side face of the product to prevent the cloth layer from being deformed by atmospheric pressure in the vacuumizing process, laying auxiliary materials, laying a first layer of vacuum bag membrane, verifying the vacuum degree and the air tightness, finally laying a flow guide net, laying a second layer of vacuum bag membrane, and verifying the vacuum degree and the air tightness again.

Preferably, in the step S5, the formed carbon fiber beam is fully covered with insulation cotton, and the mold heating system is turned on to perform the following temperature raising and constant temperature operation:

the method comprises the following steps: heating from 30 deg.C to 35 deg.C, and taking 180 min;

step two: heating from 35 deg.C to 50 deg.C, and taking 60 min;

step three: heating from 50 deg.C to 60 deg.C, and taking 120 min;

step four: heating from 60 deg.C to 80 deg.C, and taking 120 min;

step five: heating from 80 deg.C to 90 deg.C, and taking 60 min;

step six: heating from 90 deg.C to 100 deg.C, and taking 60 min;

step seven: heating from 100 deg.C to 110 deg.C, and taking 30 min;

step eight: the temperature is raised from 110 ℃ to 120 ℃ and the time is 150 min.

The technical scheme can obtain the following beneficial effects:

1. the low temperature which is not reacted for a long time and is favorable for unfreezing is found, a group of corresponding storage temperature and storage time data are determined, the storage temperature can be selected according to the production rhythm, and the storage and the unfreezing of the carbon fiber prepreg are favorable.

2. Find the temperature interval that can guarantee the carbon fiber and lay the effect, carbon fiber prepreg's viscosity is suitable, reaction rate is suitable, the exhaust is smooth and easy, is favorable to laying of carbon fiber prepreg.

3. Corresponding laying technology and tools are designed, the laying process and the driving process are matched, the carbon fiber prepreg layers are tightly attached to each other, no gap exists, no bubbles exist, and laying efficiency and effect are guaranteed.

4. The curing heat release area limit of the carbon fiber prepreg at different high temperatures is tested, the proper preheating temperature exhaust operation is found, the proper curing heat release temperature is found, the curing heating curve with reasonable design is adopted, the product quality of the main beam is ensured, and the porosity and fold defects are reduced.

5. The process steps, the parameters in each step and the construction key points are elaborately designed, the whole process is improved, the implementation is convenient, and the stable quantity of the obtained product quality is reliable.

Drawings

FIG. 1 is a flow chart of the present invention.

Fig. 2 is a schematic view of laying up the carbon fiber prepreg of the present invention.

Fig. 3 is a schematic view of a cloth laying station of the present invention.

Fig. 4 is a schematic view of the iron mop of the present invention.

Fig. 5 is a schematic view of the iron mop attachment of the present invention.

Fig. 6 is an end view of the extension bar of the iron mop of the present invention.

Fig. 7 is a schematic view of a roll brush of the present invention.

In the figure:

1. the mop comprises a roller, 2, a mandrel, 3, a handle, 31, a connector, 311, a fork rod, 312, a connecting rod, 32, a handle body, 33, a force application part, 4, a lining, 5, a bearing, 6, a mop bottom plate, 61, a circular tube, 7, an extension rod, 71, a socket, 8, a connecting piece, 81, a transverse connecting column, 82, a vertical connecting column, 821, a plug, 10, a mold surface, 20, adhesive-carrying polishing-free cloth, 30, carbon fiber prepreg, 40, prepreg polishing-free cloth, 50, a perforated isolating membrane, 60, a double-layer breathable felt, 70 and a bag membrane.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

As shown in FIG. 1, the invention discloses a manufacturing process of a carbon fiber beam of a wind power blade, which comprises the following steps,

s1, storing the carbon fiber prepreg at low temperature;

s2, unfreezing the carbon fiber impregnated material;

s3, laying carbon fiber prepreg;

s4, checking the vacuum degree and the air tightness;

and S5, curing the carbon fiber prepreg.

Carbon fiber prepregs are materials for low temperature curing processes that react at room temperature and therefore require extra attention to temperature changes during storage and lay-up. In step S1, if the carbon fiber prepreg is at room temperature, the shelf life is less than 20 days, if the temperature is less than or equal to 0 ℃, the shelf life is 180 days, and if the temperature is less than or equal to-18 ℃, the shelf life is 360 days, so as to ensure the optimal low temperature that is not reacted for a long time and is favorable for thawing, and a suitable storage temperature can be selected according to production needs, thereby being favorable for storage and subsequent use of the carbon fiber prepreg.

In step S2, the carbon fiber prepreg is put into a temperature return room 24 hours before use to be heated, the temperature of the temperature return room is 30-35 ℃, enough operable time and operability of the prepreg are ensured, and after the temperature return thawing is completed, the outer package condensate water is wiped dry.

In step S3, the mold is first preheated during the laying. In the preheating link, the preheating temperature of the mold is 28-32 ℃, the preheating temperature is too high, the operation time of the prepreg is shortened, the prepreg can be cured in the operation process, the viscosity of the prepreg is reduced due to the too low preheating temperature, the interlayer is difficult to bond to form a gap, the preheating temperature is preferably 30 ℃, the prepreg is most suitable for operation, and the product quality is ensured.

As shown in fig. 2, after preheating, polishing-free cloth is laid on the surface 10 of the mold, when the polishing-free cloth is laid, the polishing-free cloth 20 with glue is laid on the mold, and the polishing-free cloth is used for adhering to the mold, so that the mold is ensured to be free of soakage and bubbles, the subsequent carbon fiber prepreg laying is facilitated, and the quality of a main beam is ensured.

After the polishing-free cloth is laid, laying carbon fiber prepreg 30, when laying the carbon fiber prepreg 30, firstly hoisting a carbon fiber prepreg roll by using a travelling crane, placing the carbon fiber prepreg roll on a cloth laying vehicle, measuring that the surface temperature of the carbon fiber prepreg roll at room temperature needs to reach 22 +/-4 ℃, measuring that the temperature difference between an inner roll and an outer roll is less than or equal to 3 ℃, adjusting the parameter setting of the cloth laying vehicle, outputting the tension by 30 percent, and preparing for laying at the speed of 5-10 percent.

In the process of laying the carbon fiber prepreg roll, the carbon fiber prepreg roll is laid along the length direction of the mold, the edges of the cloth layers are aligned on two sides of the carbon fiber prepreg roll, the product lines are aligned at two ends of the cloth layers, and the carbon fiber prepreg is required to be compacted and adhered to the mold in the laying process.

Specifically, as shown in fig. 3, cloth spreading stations are arranged on two sides of the cloth spreading advancing direction, each station is attended by one worker, the prepreg laying requirements are met, and the cloth spreading stations include the following steps:

a station A: the worker at the station A is a travelling crane and a cloth spreading worker and is responsible for lifting the travelling crane and advancing the cloth spreading vehicle and synchronously advancing with the cloth spreading vehicle; stopping the vehicle as much as possible in the midway; whether the limitation of the prepreg material roll on the trolley is changed or not is noticed, and the limitation looseness needs to be adjusted in time. Before the trolley advances, an alarm must be turned on, people around the trolley must be observed, and the driving safety of the travelling crane and the cloth spreading vehicle is noticed.

B station and C station: the cloth layer aligning device is arranged behind the station A and located on two sides of the advancing direction of cloth paving, and is responsible for aligning the edges of the cloth layer in the cloth paving process, aligning product lines at two ends of the cloth layer, and aligning the station positions of the station B and the station C3-4 m away from cloth rolls on a cloth paving vehicle to facilitate the alignment of the cloth layer. After the cloth is laid, workers at the station B and the station C are also responsible for trimming the cloth layer.

D, station: and the middle position of the cloth layer is compacted and moves towards the cloth paving advancing direction.

E station and F station: and the E station drives the cloth from the middle to the front edge, and the F station drives the cloth from the middle to the rear edge.

G station and H station: the cloth driving device is respectively positioned behind the station E and the station F and is responsible for repeatedly driving cloth, the station G drives the cloth from the middle to the front edge, the station H drives the cloth from the middle to the rear edge, after each layer is laid, the cloth is inspected again from the front to the rear, and the cloth is driven again in an area which is not leveled.

I station: and the material roll is responsible for tearing off the isolating films on the upper surface and the lower surface of the material roll.

As shown in fig. 4-6, in the above operation, the station D uses an iron mop, the iron mop includes a mop base plate 6, an extension bar 7 and a connecting piece 8, and the extension bar 7 is connected to the upper surface of the mop base plate 6 through the connecting piece 8. Specifically, a pair of coaxial circular tubes 61 is arranged on the upper surface of the mop base plate 6, and the pair of circular tubes 61 are arranged at intervals along the long axis direction of the mop base plate 6; the connecting piece 8 is T type, sets up between a pair of pipe 61, including both ends insert the horizontal spliced pole 81 of both sides pipe 61 respectively and the vertical spliced pole 82 that stretches out from horizontal spliced pole 81 middle part, vertical spliced pole 82 stretches out from between a pair of pipe 61 to be connected with extension bar 7. The tail end of the vertical connecting column 82 is a flat plug 821, one end of the extension bar 7 is provided with a socket 71 for inserting the plug, and the plug 821 is inserted into the socket 71 and fixed by a fastener. When the mop is used, the connecting piece 31 can rotate in the round pipe 61, the extension bar 7 connected to the connecting piece 31 can also rotate, the mop can be conveniently used by an operator by stretching the mop to a distance and pulling the mop close to the body, and meanwhile, the mop bottom plate 6 is large in area and good in compaction effect.

As shown in FIG. 7, a E, H station adopts a rolling brush operation, the rolling brush comprises a handle 3, a mandrel 2 and a roller 1, the roller 1 is coaxially sleeved on the mandrel 2, and two ends of the mandrel 2 exceed the roller 1 and are connected with the handle 3. Two ends of the mandrel 2 are sleeved with bushings 4, the bushings 4 are sleeved with bearings 5, and the bearings 5 are connected to the inner side of the roller 1. Specifically, the handle 3 includes a connecting head 31 and a handle body 32, the connecting head 31 includes two side forks 311 and a link 312 connected between the forks 311, one end of the handle body 32 is connected to the middle of the link 312, and the other end is provided with a force application portion 33, in this embodiment, the force application portion 33 is a short rod perpendicular to the handle body, in other embodiments, other structures are also possible, and the present invention is also within the protection scope. During the use, hold application of force portion 33, cylinder 1 compaction is on spreading the cloth, and the front and back pulling round brush, cylinder 1 can rotate round dabber 3, can further catch up with spreading the layer and tie the compaction, guarantees the planarization of spreading the layer, simple structure, and is light and handy, easy operation.

In step 4, after the laying is finished, firstly, laying pre-impregnated polishing-free cloth 40 and a perforated isolating membrane 50 on the carbon fiber prepreg in sequence, and placing a flange on the side surface of the product to prevent the cloth layer from being deformed by atmospheric pressure in the vacuumizing process; laying auxiliary materials such as double-layer breathable felt 60 and the like, laying a 1 st layer of vacuum bag film 70, vacuumizing, verifying the vacuum degree and the air tightness, laying a flow guide net, laying a 2 nd layer of vacuum bag film 70, vacuumizing, and verifying the vacuum degree and the air tightness.

In step S5, the carbon fiber beam after being laid is completely covered with the heat-insulating cotton, and the mold heating system is turned on to perform the following temperature raising and constant temperature operation:

the method comprises the following steps: heating from 30 deg.C to 35 deg.C, and taking 180 min;

step two: heating from 35 deg.C to 50 deg.C, and taking 60 min;

step three: heating from 50 deg.C to 60 deg.C, and taking 120 min;

step four: heating from 60 deg.C to 80 deg.C, and taking 120 min;

step five: heating from 80 deg.C to 90 deg.C, and taking 60 min;

step six: heating from 90 deg.C to 100 deg.C, and taking 60 min;

step seven: heating from 100 deg.C to 110 deg.C, and taking 30 min;

step eight: the temperature is raised from 110 ℃ to 120 ℃ and the time is 150 min.

The mould is heated in a curve manner according to the heating steps, so that exhaust can occur in the curing process of the carbon fiber beam, and heat release buckling can occur. The method is carried out according to the steps, so that the sufficient exhaust time can be ensured, the main beam cannot be wrapped and heated to buckle in the curing process, the porosity and the wrinkle defects are reduced, and the production cycle meets the production requirements.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.