Carbon fiber composite hat-shaped stringer forming equipment and process

Abstract

The invention discloses carbon fiber composite cap-shaped stringer forming equipment and process, and the equipment comprises a material roll quick-change mechanism, a guide mechanism, a heating device, a rolling mechanism, a bottom bracket, a cap-shaped mold, a linear guide rail and a spiral clamping mechanism; the cap-shaped mold and the linear guide rail are respectively mounted on the bottom bracket; the spiral clamping mechanism is mounted at one end of the bottom bracket; the material roll quick-changing mechanism, the guide mechanism and the heating device are mounted on the linear guide rail and can move along the linear guide rail; the rolling mechanism is arranged above the cap-shaped mold and located between the spiral clamping mechanism and the heating device. By arranging the material roll quick-changing mechanism, the guide mechanism, the heating device and the rolling mechanism, the constant-force compaction, constant-temperature heating and constant-tension control of the carbon fiber prepreg can be realized while the automatic forming of the cap-shaped stringer made of the carbon fiber composite material is ensured. On the premise that automatic forming of the carbon fiber composite stringer is guaranteed, the forming efficiency and forming quality of the carbon fiber composite stringer are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing aircraft composite material structural parts, and in particular to a carbon fiber composite hat-shaped long stringer forming equipment and process. Background Art

[0002] Carbon fiber composites, due to their high specific strength and stiffness, offer lightweight structural advantages. Furthermore, their excellent fatigue and corrosion resistance make them a highly advanced material in civil aircraft design. In the fuselage wall structure of a semi-monocoque aircraft, the long truss is the primary load-bearing component that transmits azimuth loads. Its compressive bearing capacity significantly impacts the overall stability and post-buckling capacity of the composite-reinforced wall panels. Carbon fiber composite beams are the primary load-bearing structural components in aircraft lightweight design. Against this backdrop, the importance of manufacturing and forming carbon fiber composite trusses is self-evident.

[0003] Traditional carbon fiber composite hat-shaped stringers are often formed using a manual layup method. Carbon fiber composite prepreg tape is cut into appropriate sizes and shapes, then manually laid out in a specific layup sequence using a heated iron on a mold. After laying, the layers are placed in an autoclave for curing. This entire manufacturing process has a low degree of automation, low efficiency, and poor quality. Therefore, there is an urgent need to develop a process and equipment suitable for the automated forming of carbon fiber composite hat-shaped stringers. Summary of the Invention

[0004] In order to overcome the problems of long production cycle and unguaranteed molding quality of carbon fiber composite hat-shaped long stringers in the prior art, the purpose of the present invention is to provide a carbon fiber composite hat-shaped long stringer molding equipment and process, which can improve the molding efficiency and molding quality of carbon fiber composite long stringers while ensuring the automated molding of carbon fiber composite long stringers.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A carbon fiber composite hat-shaped long stringer forming equipment, comprising a material roll quick-changing mechanism, a guide mechanism, a heating device, a rolling mechanism, a bottom bracket, a hat-shaped mold, a linear guide rail and a screw clamping mechanism;

[0007] The hat-shaped mold and the linear guide rail are respectively mounted on the bottom bracket; and the screw clamping mechanism is mounted on one end of the bottom bracket;

[0008] The material roll quick change mechanism, guide mechanism and heating device are installed on the linear guide rail and can move along the linear guide rail;

[0009] The rolling mechanism is arranged above the hat-shaped mold and is located between the screw clamping mechanism and the heating device.

[0010] Furthermore, the material roll quick-change mechanism includes a first support plate, two connecting plates, an eccentric clamping mechanism, a material roll, a support, a connecting plate, a torque motor and a first optical axis; wherein, the material roll is wound on the first optical axis, and both ends of the first optical axis are mounted on the connecting plate through an eccentric clamping structure, and the two connecting plates are respectively connected to the first support plate and the second support plate; the second support plate and the first support plate are arranged on a linear guide rail; the torque motor is mounted on the connecting plate, and the connecting plate is mounted on the second support plate.

[0011] Furthermore, the carbon fiber composite material prepreg tape is tensioned by means of a material roll quick-change mechanism, a guide mechanism and a spiral clamping mechanism, so that the carbon fiber composite material prepreg tape always maintains a set tension during molding; the hat-shaped mold is heated by means of a heating device to heat the carbon fiber composite material prepreg tape, so that the hat-shaped mold and the carbon fiber composite material prepreg tape always maintain a set temperature; the linear guide rail drives the material roll quick-change mechanism, the guide mechanism and the heating device to feed linearly; the downward pressure and linear feeding of the roller pressing mechanism are controlled to always maintain a set pressure on the carbon fiber composite material prepreg tape, and finally the roller pressing device is used in conjunction with the hat-shaped mold to realize the molding of the hat-shaped long stringer through synchronous movement.

[0012] Furthermore, the guide mechanism includes a first connecting plate, a third support plate, a fourth support plate, a second connecting plate, a second optical axis, a third optical axis, a fourth optical axis, a cover plate, and a first U-shaped plate, a second U-shaped plate, a third U-shaped plate, a fourth U-shaped plate, a fifth U-shaped plate and a sixth U-shaped plate arranged on the bottom surface of the cover plate; wherein, the first U-shaped plate, the second U-shaped plate, the third U-shaped plate, the fourth U-shaped plate, the fifth U-shaped plate and the sixth U-shaped plate are all provided with U-shaped grooves; the second U-shaped plate is connected to the first connecting plate, and the fifth U-shaped plate is connected to the second connecting plate; the first connecting plate is connected to the fourth support plate, and the second connecting plate is connected to the third support plate; the third support plate and the fourth support plate are arranged on a linear guide rail; the second optical axis is installed in the U-shaped grooves on the U-shaped plate and the fourth U-shaped plate, the third optical axis is installed in the U-shaped grooves on the second U-shaped plate and the fifth U-shaped plate, and the fourth optical axis is installed in the U-shaped grooves on the third U-shaped plate and the sixth U-shaped plate.

[0013] Furthermore, the heating device includes an insulation box, a first connecting member, a first support member, a second connecting member and a second support member; wherein, an infrared heating lamp is arranged inside the insulation box; one end of the insulation box is fixed to the first support plate through the first connecting member, and the other end is fixed to the second support member through the second connecting member; the first support member and the second support member are arranged on a linear guide rail.

[0014] Furthermore, the rolling mechanism includes a roller bracket, a straight roller, a top hat-shaped profiling roller and a bottom hat-shaped profiling roller, wherein a flange opening for connecting a robotic arm is provided on the top of the roller bracket, a U-shaped plate is provided on one side of the bottom surface of the roller bracket, and a U-shaped plate is provided on the other side, and the U-shaped plates on both sides are symmetrically arranged, each U-shaped plate is provided with a circular opening, the straight roller is installed on a pair of U-shaped plates at the front end of the roller bracket; the top hat-shaped profiling roller is installed on a pair of U-shaped plates in the middle of the roller bracket; the bottom hat-shaped profiling roller is installed on a pair of U-shaped plates at the rear end of the roller bracket.

[0015] Furthermore, the sliding guide rail includes two parallel first guide rails, a second guide rail, a first slider, a second slider, a third slider, a fourth slider, a fifth slider, a sixth slider, a first motor and a second motor, wherein the third slider is installed at one end of the first guide rail, the sixth slider is installed at one end of the second guide rail, and the material roll quick change mechanism is installed on the third slider and the sixth slider; the first slider is installed at the other end of the first guide rail, the fourth slider is installed at the other end of the second guide rail, and the heating device is installed on the first slider and the fourth slider; the second slider is installed between the first and third sliders, the fifth slider is installed between the fourth and sixth sliders, and the guide device is installed on the second slider and the fifth slider; the first motor is installed at one end of the first guide rail, and the second motor is installed at one end of the second guide rail; the first slider, the second slider and the third slider are connected to the first motor, and the fourth slider, the fifth slider and the sixth slider are connected to the second motor.

[0016] Furthermore, a plurality of heating rods are provided on the hat-shaped mold; the bottom bracket includes a bracket part and a plurality of mold mounting plates sequentially provided on the bracket part.

[0017] A carbon fiber composite hat-shaped long stringer forming process, comprising:

[0018] One end of the carbon fiber composite material prepreg tape on the material roll quick change mechanism is pulled out, passed through one end of the guide mechanism, and the other end is passed out. Then the carbon fiber composite material prepreg tape is passed through one end of the heating device and the other end is passed out. It is placed between the rolling mechanism and the hat-shaped mold. Finally, the spiral clamping mechanism fixes the carbon fiber composite material prepreg tape to one end of the hat-shaped mold.

[0019] The hat-shaped mold is heated to a temperature between 40°C and 100°C, and the carbon fiber composite material prepreg tape is heated to a temperature between 40°C and 100°C by the heating device 3;

[0020] The material roll quick change mechanism, guide mechanism and heating device are fed linearly to one end at the same speed at the same time, and the roller pressing mechanism cooperates with the hat-shaped mold to perform roller forming;

[0021] When the rolling mechanism, the material roll quick-changing mechanism, the guide mechanism and the heating device roll to the end of the long stringer, the carbon fiber composite material prepreg tape is cut to obtain a hat-shaped long stringer preform;

[0022] The hat-shaped long stringer preform is solidified to obtain the hat-shaped composite material long stringer.

[0023] Furthermore, by adjusting the guide mechanism, the tension of the carbon fiber composite material prepreg tape is maintained between 1N and 10N;

[0024] The downward pressure of the roller pressing mechanism is 200-2000N, and the feed speed of the material roll quick change mechanism, guide mechanism, heating device and roller pressing mechanism is 2mm / s-30mm / s.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] Compared to traditional carbon fiber composite model stringer forming processes using manual layup, the present invention utilizes a quick-change roll mechanism, a guide mechanism, a heating device, and a roller pressing mechanism. This ensures automated formation of the carbon fiber composite hat-shaped stringer while also achieving constant-force compaction, constant-temperature heating, and constant-tension control of the carbon fiber prepreg. This improves both the efficiency and quality of carbon fiber composite stringer forming while ensuring automated formation of the stringer.

[0027] Furthermore, the roll-changing mechanism is modular in design, allowing for quick replacement of one roll of carbon fiber composite prepreg tape when it is depleted. A three-position adjustable rotating optical axis is incorporated into the guide mechanism, which, in conjunction with the torque motor and spiral tightening mechanism within the roll-changing mechanism, enables tension control of the carbon fiber composite prepreg tape.

[0028] Furthermore, the rolling mechanism can realize three-stage rolling. The straight roller uses the upper surface of the hat-shaped mold as the positioning reference and preferentially rolls the upper surface of the hat-shaped mold; the top hat-shaped profiling roller uses the upper surface of the hat-shaped mold as the positioning reference and rolls the upper R angle of the model mold; the bottom hat-shaped profiling roller uses the plane at the bottom R angle of the hat-shaped mold as the reference and rolls the isosceles sides and the bottom R angle on both sides of the hat-shaped structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is the general assembly drawing of the roller press;

[0030] Figure 2 This is a schematic diagram of the traction and material roll quick change mechanism;

[0031] Figure 3 Schematic diagram of the guiding mechanism;

[0032] Figure 4 It is a schematic diagram of the components of the heating device;

[0033] Figure 5 Schematic diagram of the roller pressing mechanism;

[0034] Figure 6 Schematic diagram of the sliding guide rail;

[0035] Figure 7 Schematic diagram of the screw clamping device;

[0036] Figure 8 Schematic diagram of a hat-shaped mold;

[0037] Figure 9 This is a schematic diagram of the bottom bracket;

[0038] Figure 10 This is a schematic diagram of the robotic arm;

[0039] Explanation of the numbers in the figure:

[0040] 1 is the material roll quick change mechanism, 2 is the guide mechanism, 3 is the heating device, 4 is the rolling mechanism, 5 is the bottom bracket, 6 is the hat-shaped mold, 7 is the robot arm, 8 is the linear guide rail, 9 is the screw clamping mechanism, and 10 is the robot arm;

[0041] 1-1 is the first support plate, 1-2 is the connecting plate, 1-3 is the eccentric tightening mechanism, 1-4 is the material roll, 1-5 is the second support plate, 1-6 is the connecting plate, 1-7 is the torque motor, 1-8 is the first optical axis; 2-1 is the cover plate, 2-2 is the connecting plate, 2-3 is the support plate, 2-4 is the support plate, 2-5 is the connecting plate, 2-6 is the second optical axis, 2-7 is the third optical axis, 2-8 is the fourth optical axis, 2-9 is the first U Profile plate, 2-10 is the second U-shaped plate, 2-11 is the third U-shaped plate, 2-12 is the fourth U-shaped plate, 2-13 is the fifth U-shaped plate, 2-14 is the sixth U-shaped plate, 3-1 is the insulation box body, 3-2 is the first connecting member, 3-3 is the first supporting member, 3-4 is the second connecting member, 3-5 is the supporting member; 4-1 is the roller bracket, 4-2 is the straight roller, 4-3 is the top hat-shaped profiling roller, and 4-4 is the bottom hat-shaped profiling roller; 5-1 is the first mold mounting plate, 5-2 is the second mold mounting plate, 5-3 is the third mold mounting plate, 5-4 is the fourth mold mounting plate, 5-5 is the fifth mold mounting plate, 5-6 is the sixth mold mounting plate, 5-7 is the seventh mold mounting plate, 5-8 is the eighth mold mounting plate, 5-9 is the ninth mold mounting plate, and 5-10 is the bracket part; 6-1 is the first resistance rod, 6-2 is the second resistance rod, 6-3 is the third resistance rod, 6-4 is the fourth resistance rod, 6-5 is the fifth resistance rod, 6-6 is the sixth resistance rod, 6-7 is the seventh resistance rod, 6-8 is the eighth resistance rod, 6-9 is the ninth resistance rod, and 6-10 is the tenth resistance rod; 8-1 is the first slider, 8-2 is the second slider, 8-3 is the third slider, 8-4 is the fourth slider, 8-5 is the fifth slider, 8-6 is the sixth slider, 8-7 is the first motor, and 8-8 is the second motor. DETAILED DESCRIPTION

[0042] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in a variety of different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0043] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0044] like Figure 1As shown, a carbon fiber composite material hat-shaped long stringer roll forming equipment of the present invention includes: a material roll quick-changing mechanism 1, a guiding mechanism 2, a heating device 3, a rolling mechanism 4, a bottom bracket 5, a hat-shaped mold 6, a robotic arm 7, a linear guide rail 8 and a spiral clamping mechanism 9; the heating device 3 is an infrared heating device.

[0045] The hat-shaped mold 6 and the linear guide rail 8 are respectively installed on the bottom bracket 5; and the screw clamping mechanism 9 is installed on the left end of the bottom bracket 5.

[0046] The material roll quick change mechanism 1, the guide mechanism 2 and the heating device 3 are installed on the linear guide rail 8 and can move along the linear guide rail 8;

[0047] The rolling mechanism 4 is installed at the end of the robot arm 7, and the posture of the robot arm 7 is adjusted so that the rolling mechanism 4 is placed above the hat-shaped mold 6 and between the screw clamping mechanism 9 and the heating device 3;

[0048] The carbon fiber composite material prepreg tape is fixed using the material roll quick-change mechanism 1, the guide mechanism 2 and the spiral clamping mechanism 9.

[0049] See also Figure 2 The material roll quick-changing mechanism 1 is composed of a first support plate 1-1, two connecting plates 1-2, an eccentric tightening mechanism 1-3, a material roll 1-4, a support member 1-5, a connecting plate 1-6, a torque motor 1-7 and a first optical axis 1-8. The material roll 1-4 can be a single-layer unidirectional carbon fiber prepreg, a single-layer woven carbon fiber prepreg, a double-layer unidirectional prepreg, a double-layer unidirectional and woven prepreg, a double-layer woven prepreg or a multi-layer prepreg; the material roll 1-4 is rolled on the first optical axis 1-8, and the two ends of the first optical axis 1-8 are installed on the connecting plate 1-2 through the eccentric clamping structure 1-3 (that is, each end of the first optical axis 1-8 is provided with a connecting plate 1-2), and the two connecting plates 1-2 are respectively connected to the first support plate 1-1 and the second support plate 1-5; the second support plate 1-5 and the first support plate 1-1 are arranged on the linear guide rail 8; the torque motor 1-7 is installed on the connecting plate 1-6, and the connecting plate 1-6 is installed on the second support plate 1-5.

[0050] The carbon fiber composite material prepreg tape is tensioned by the torque motors 1-7 and the guide mechanism 2 in the material roll quick-change mechanism 1, so that the carbon fiber composite material prepreg tape always maintains a certain tension during molding; the hat-shaped mold 6 is heated by multiple resistance rods, and the carbon fiber composite material prepreg tape is heated by the heating device 3, so that the hat-shaped mold 6 and the carbon fiber composite material prepreg tape always maintain a certain temperature during molding; the linear guide rail 8 drives the material roll quick-change mechanism 1, the guide mechanism 2, and the heating device 3 to feed linearly at a certain speed; the robot arm 7 controls the downward pressure and linear feeding of the rolling mechanism 4, so that the carbon fiber composite material prepreg tape always maintains a certain pressure during molding, and finally the rolling device 4 is used to cooperate with the hat-shaped mold 6 to realize the hat-shaped long stringer molding through synchronous movement.

[0051] See also Figure 3 In (a) and (b), the guide mechanism 2 is composed of a cover plate 2-1, a first connecting plate 2-2, a third support plate 2-3, a fourth support plate 2-4, a second connecting plate 2-5, a second optical axis 2-6, a third optical axis 2-7, a fourth optical axis 2-8, a first U-shaped plate 2-9, a second U-shaped plate 2-10, a third U-shaped plate 2-11, a fourth U-shaped plate 2-12, a fifth U-shaped plate 2-13, and a sixth U-shaped plate 2-14. U-shaped grooves are formed on the first U-shaped plate 2-9, the second U-shaped plate 2-10, the third U-shaped plate 2-11, the fourth U-shaped plate 2-12, the fifth U-shaped plate 2-13, and the sixth U-shaped plate 2-14. The cover plate 2-1 is the top body, and a U-shaped plate (a first U-shaped plate 2-9, a second U-shaped plate 2-10, a third U-shaped plate 2-11, a fourth U-shaped plate 2-12, a fifth U-shaped plate 2-13 and a sixth U-shaped plate 2-14) is installed on the bottom surface of the cover plate 2-1. The second U-shaped plate 2-10 is connected to the first connecting plate 2-2, and the fifth U-shaped plate 2-13 is connected to the second connecting plate 2-5; the first connecting plate 2-2 is connected to the fourth supporting plate 2-4, and the second connecting plate 2-5 is connected to the third supporting plate 2-3; the third supporting plate 2-3 and the fourth supporting plate 2-4 are arranged in a straight line. On the guide rail 8; the second optical axis 2-6 is installed on the U-shaped plate 2-9 and the fourth U-shaped plate 2-12, and can be adjusted up and down through the U-shaped grooves on the first U-shaped plate 2-9 and the fourth U-shaped plate 2-12; the third optical axis 2-7 is installed on the second U-shaped plate 2-10 and the fifth U-shaped plate 2-13, and can be adjusted up and down through the U-shaped grooves on the second U-shaped plate 2-10 and the fifth U-shaped plate 2-13; the fourth optical axis 2-8 is installed on the third U-shaped plate 2-11 and the sixth U-shaped plate 2-14, and can be adjusted up and down through the U-shaped grooves on the third U-shaped plate 2-11 and the sixth U-shaped plate 2-14.

[0052] See also Figure 4The heating device 3 is composed of a heat preservation box 3-1, a first connecting member 3-2, a first support member 3-3, a second connecting member 3-4, and a second support member 3-5. An infrared heating lamp is arranged inside the heat preservation box 3-1; one end of the heat preservation box 3-1 is fixed to the first support plate 3-3 via the first connecting member 3-2, and the other end is fixed to the second support member 3-5 via the second connecting member 3-4; the first support member 3-3 and the second support member 3-5 are arranged on a linear guide rail 8.

[0053] See also Figure 5 The rolling mechanism 4 includes a roller bracket 4-1, a straight roller 4-2, a top hat-shaped profiling roller 4-3 and a bottom hat-shaped profiling roller 4-4, wherein the roller bracket 4-1 is the bearing body of the entire structure, and a flange opening is provided on the top for connecting with the robotic arm 7. Three U-shaped plates (the seventh U-shaped plate, the eighth U-shaped plate and the ninth U-shaped plate) are provided on one side of the bottom surface of the roller bracket 4-1, and three U-shaped plates (the tenth U-shaped plate, the eleventh U-shaped plate and the twelfth U-shaped plate) are provided on the other side, and the U-shaped plates on both sides are symmetrically arranged (the seventh U-shaped plate and the tenth U-shaped plate are symmetrically arranged, the eighth U-shaped plate and the eleventh U-shaped plate are symmetrically arranged, and the ninth U-shaped plate and the twelfth U-shaped plate). Specifically, each U-shaped plate is provided with a circular opening for connecting with the shafts at both ends of the straight roller 4-2, the top hat-shaped profiling roller 4-3 and the bottom hat-shaped profiling roller 4-4. The straight roller 4-2 is installed on a pair of U-shaped plates at the front end of the roller bracket 4-1; the top hat-shaped profiling roller 4-3 is installed on a pair of U-shaped plates in the middle of the roller bracket 4-1; and the bottom hat-shaped profiling roller 4-4 is installed on a pair of U-shaped plates at the rear end of the roller bracket 4-1.

[0054] See also Figure 6The sliding guide rail 8 includes two parallel guide rails (a first guide rail and a second guide rail), a first slider 8-1, a second slider 8-2, a third slider 8-3, a fourth slider 8-4, a fifth slider 8-5, a sixth slider 8-6, a first motor 8-7 and a second motor 8-8. The third slider 8-3 is mounted on the right end of the first guide rail, the sixth slider 8-6 is mounted on the right end of the second guide rail, and the material roll quick change mechanism 1 is mounted on the third slider 8-3 and the sixth slider 8-6; the first slider 8-1 is mounted on the left end of the first guide rail, the fourth slider 8-4 is mounted on the left end of the second guide rail, and the heating device 3 is mounted on the first slider 8-1 and the fourth slider 8-4; the second slider 8-2 is mounted between the first slider 8-1 and the third slider 8-3, the fifth slider 8-5 is mounted between the fourth slider 8-4 and the sixth slider 8-6, and the guide device 2 is mounted on the second slider 8-2 and the fifth slider 8-5; the first motor 8-7 is mounted on the rightmost end of the first guide rail, and the second motor 8-8 is mounted on the rightmost end of the second guide rail. The first slider 8-1, the second slider 8-2, and the third slider 8-3 are connected to the first motor 8-7, and the fourth slider 8-4, the fifth slider 8-5, and the sixth slider 8-6 are connected to the second motor 8-8. By starting the first motor 8-7 and the second motor 8-8 of the linear guide 8, the sliders (the first slider 8-1, the second slider 8-2, the third slider 8-3, the fourth slider 8-4, the fifth slider 8-5, and the sixth slider 8-6) are driven to move linearly, thereby driving the roll quick change mechanism 1, the guide mechanism 2, and the heating device 3 to move linearly at the same speed.

[0055] The second support plate 1-5 of the material roll quick change mechanism 1 is arranged on the third slider 8-3 on the linear guide rail 8, and the first support plate 1-1 is arranged on the sixth slider 8-6.

[0056] The third support plate 2 - 3 of the guide mechanism 2 is arranged on the second slider 8 - 2 on the linear guide rail 8 , and the fourth support plate 2 - 4 is arranged on the fifth slider 8 - 5 .

[0057] The first support member 3 - 3 of the heating device 3 is arranged on the first slider 8 - 1 on the linear guide rail 8 , and the second support member 3 - 5 is arranged on the fourth slider 8 - 4 .

[0058] See also Figure 7 , the spiral clamping mechanism 9 is installed on the left end of the hat-shaped mold 6 by screws.

[0059] See also Figure 8 The hat-shaped mold 6 is heated by resistance heat, and the first resistance rod 6-1, the second resistance rod 6-2, the third resistance rod 6-3, the fourth resistance rod 6-4, the fifth resistance rod 6-5, the sixth resistance rod 6-6, the seventh resistance rod 6-7, the eighth resistance rod 6-8, the ninth resistance rod 6-9 and the tenth resistance rod 6-10 are sequentially arranged on the hat-shaped mold 6.

[0060] See also Figure 9 The bottom bracket 5 includes a bracket portion 5-10, and a first mold mounting plate 5-1, a second mold mounting plate 5-2, a third mold mounting plate 5-3, a fourth mold mounting plate 5-4, a fifth mold mounting plate 5-5, a sixth mold mounting plate 5-6, a seventh mold mounting plate 5-7, an eighth mold mounting plate 5-8, and a ninth mold mounting plate 5-9, which are sequentially arranged on the bracket portion 5-10. The mold mounting plates (the first mold mounting plate 5-1 to the ninth mold mounting plate 5-9) are used to support the installation of the hat-shaped mold 6.

[0061] See also Figure 10 , the robotic arm 7 is connected to the rolling mechanism 4 through the top chassis.

[0062] A carbon fiber composite material prepreg cap-type long stringer molding process of the present invention comprises the following steps:

[0063] Step 1: Fix the linear guide rail 8, the screw clamping mechanism 9 and the hat-shaped mold 6 on the bottom bracket 5;

[0064] Step 2: Install the material roll quick change mechanism 1 on the third slider 8-3 and the sixth slider 8-6 of the linear guide rail 8, fix the guide device 2 on the second slider 8-2 and the fifth slider 8-5, and install the heating device 3 on the first slider 8-1 and the fourth slider 8-4.

[0065] Step 3: Fix the rolling mechanism 4 on the robotic arm 7;

[0066] Step 4: Pull out one end of the carbon fiber composite material prepreg tape on the material roll quick change mechanism 1, pass it through the right end of the guide mechanism 2, and then pass it out from the left end. Then continue to pass the carbon fiber composite material prepreg tape through the right end of the heating device 3 and out from the left end, and place it between the rolling mechanism 4 and the hat-shaped mold 6. Finally, the spiral clamping mechanism 9 fixes the carbon fiber composite material prepreg tape to the left end of the hat-shaped mold 6.

[0067] Step 5: Adjust the positions of the first optical axis 2-6, the third optical axis 2-7, and the third optical axis 2-8 on the guide mechanism 2 so that the tension of the carbon fiber composite material prepreg tape is maintained between 1N and 10N;

[0068] Step 6: heating the hat-shaped mold 6 to a temperature between 40° C. and 100° C. by heating the first resistor rod 6-1, the second resistor rod 6-2, the third resistor rod 6-3, the fourth resistor rod 6-4, the fifth resistor rod 6-5, the sixth resistor rod 6-6, the seventh resistor rod 6-7, the eighth resistor rod 6-8, the ninth resistor rod 6-9 and the tenth resistor rod 6-10 on the hat-shaped mold 6, and heating the carbon fiber composite material prepreg tape to a temperature between 40° C. and 100° C. by using the heating device 3;

[0069] Step 7: Start the first motor 8-7 and the first motor 8-8 on the slider of the linear guide 8 to drive the material roll quick change mechanism 1, the guide mechanism 2, and the heating device 3 to feed linearly to the right end at the same speed at the same time. The feeding speed is 2mm / s-30mm / s;

[0070] Step 8: At the same time, the rolling mechanism 4 is driven by the robotic arm 7 to press down and feed linearly, with a pressing pressure of 200-2000N and a feeding speed of 2mm / s-30mm / s. During rolling, the straight roller 4-2 first presses the top of the carbon fiber composite material prepreg tape against the hat-shaped mold 6, and the top hat-shaped profiling roller 4-3 uses the upper surface of the hat-shaped mold 6 as a reference to roll the plane at the top of the hat-shaped long stringer and the R angles on both sides of the plane. The bottom hat-shaped profiling roller 4-4 uses the lower surface of the hat-shaped mold 6 as a reference to roll the planes and R angles on both sides of the bottom of the hat-shaped long stringer. Finally, the rolling mechanism 4 and the hat-shaped mold 6 cooperate to perform roll forming.

[0071] Step 9: When the rolling mechanism 4, the material roll quick change mechanism 1, the guide mechanism 1 and the heating device 3 roll to the end of the long stringer at a certain speed of 2mm / s-30mm / s, the rolling mechanism 4 is lifted by the robotic arm 7, and the carbon fiber composite material prepreg tape is manually cut to obtain a hat-shaped long stringer preform;

[0072] Step 10: Place the hat-shaped long stringer preform obtained in step 9 in an autoclave or a high-temperature drying oven for curing.

[0073] Step 11: De-mold and remove the cured hat-shaped composite long stringer.

[0074] The above description is merely a description of the preferred embodiment of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiment, and variations in the specific structure are permitted. Any variations made within the scope of the independent claims of the present invention are also within the scope of protection of the present invention.

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

Claims

1. A carbon fiber composite hat-shaped long stringer forming equipment, characterized in that: It comprises a material roll quick-changing mechanism (1), a guide mechanism (2), a heating device (3), a rolling mechanism (4), a bottom bracket (5), a cap-shaped mold (6), a linear guide rail (8) and a screw clamping mechanism (9); The cap-shaped mold (6) and the linear guide rail (8) are respectively mounted on the bottom bracket (5); and the screw clamping mechanism (9) is mounted on one end of the bottom bracket (5); The material roll quick-change mechanism (1), the guide mechanism (2) and the heating device (3) are installed on a linear guide rail (8) and are capable of moving along the linear guide rail (8); The rolling mechanism (4) is arranged above the hat-shaped mold (6) and is located between the screw clamping mechanism (9) and the heating device (3).

2. The carbon fiber composite hat-shaped stringer forming equipment according to claim 1, characterized in that: The material roll quick-change mechanism (1) comprises a first support plate (1-1), two connecting plates (1-2), an eccentric tightening mechanism (1-3), a material roll (1-4), a support member (1-5), a connecting plate (1-6), a torque motor (1-7) and a first optical axis (1-8); wherein the material roll (1-4) is wound on the first optical axis (1-8), both ends of the first optical axis (1-8) are mounted on the connecting plate (1-2) via an eccentric clamping structure (1-3), and the two connecting plates (1-2) are respectively connected to the first support plate (1-1) and the second support plate (1-5); the second support plate (1-5) and the first support plate (1-1) are arranged on a linear guide rail (8); the torque motor (1-7) is mounted on the connecting plate (1-6), and the connecting plate (1-6) is mounted on the second support plate (1-5).

3. The carbon fiber composite hat-shaped stringer forming equipment according to claim 1, characterized in that: The carbon fiber composite material prepreg tape is tensioned by means of a material roll quick-change mechanism (1), a guide mechanism (2) and a spiral clamping mechanism (9), and during molding, the carbon fiber composite material prepreg tape is always kept at a set tension; the hat-shaped mold (6) is heated, and the carbon fiber composite material prepreg tape is heated by means of a heating device (3), and the hat-shaped mold (6) and the carbon fiber composite material prepreg tape are always kept at a set temperature; the linear guide rail (8) drives the material roll quick-change mechanism (1), the guide mechanism (2) and the heating device (3) to linearly feed; the roller pressing mechanism (4) is controlled to press down and linearly feed, and the carbon fiber composite material prepreg tape is always kept at a set pressure; finally, the roller pressing device (4) is used in conjunction with the hat-shaped mold (6) to achieve synchronous movement to realize the molding of the hat-shaped long stringer.

4. The carbon fiber composite hat-shaped stringer forming equipment according to claim 1, characterized in that: The guide mechanism (2) comprises a first connecting plate (2-2), a third supporting plate (2-3), a fourth supporting plate (2-4), a second connecting plate (2-5), a second optical axis (2-6), a third optical axis (2-7), a fourth optical axis (2-8), a cover plate (2-1), and a first U-shaped plate (2-9), a second U-shaped plate (2-10), a third U-shaped plate (2-11), a fourth U-shaped plate (2-12), a fifth U-shaped plate (2-13), and a sixth U-shaped plate (2-14) arranged on the bottom surface of the cover plate (2-1); wherein the first U-shaped plate (2-9), the second U-shaped plate (2-10), the third U-shaped plate (2-11), the fourth U-shaped plate (2-12), the fifth U-shaped plate (2-13), and the sixth U-shaped plate (2-14) are all provided with U The invention relates to a linear guide rail (8) comprising a first U-shaped plate (2-9) and a second U-shaped plate (2-12), a second U-shaped plate (2-10) and a fifth U-shaped plate (2-13) connected to the second U-shaped plate (2-5); a first U-shaped plate (2-2) and a fourth U-shaped plate (2-4) connected to the fourth support plate (2-4); a second U-shaped plate (2-3) and a fourth support plate (2-4) arranged on a linear guide rail (8); a second optical axis (2-6) installed in the U-shaped grooves on the U-shaped plate (2-9) and the fourth U-shaped plate (2-12); a third optical axis (2-7) installed in the U-shaped grooves on the second U-shaped plate (2-10) and the fifth U-shaped plate (2-13); and a fourth optical axis (2-8) installed in the U-shaped grooves on the third U-shaped plate (2-11) and the sixth U-shaped plate (2-14).

5. The carbon fiber composite hat-shaped stringer forming equipment according to claim 1, characterized in that: The heating device (3) comprises a heat preservation box (3-1), a first connecting member (3-2), a first supporting member (3-3), a second connecting member (3-4) and a second supporting member (3-5); wherein an infrared heating lamp sheet is arranged inside the heat preservation box (3-1); one end of the heat preservation box (3-1) is fixed to the first supporting plate (3-3) through the first connecting member (3-2), and the other end is fixed to the second supporting member (3-5) through the second connecting member (3-4); the first supporting member (3-3) and the second supporting member (3-5) are arranged on a linear guide rail (8).

6. The carbon fiber composite hat-shaped stringer forming equipment according to claim 1, characterized in that: The rolling mechanism (4) comprises a roller bracket (4-1), a straight roller (4-2), a top hat-shaped profiling roller (4-3) and a bottom hat-shaped profiling roller (4-4), wherein a flange opening for connecting a mechanical arm (7) is provided on the top of the roller bracket (4-1), (3) U-shaped plates are provided on one side of the bottom surface of the roller bracket (4-1), and (3) U-shaped plates are provided on the other side, and the U-shaped plates on both sides are symmetrically arranged, and each U-shaped plate is provided with a circular opening, the straight roller (4-2) is mounted on a pair of U-shaped plates at the front end of the roller bracket (4-1); the top hat-shaped profiling roller (4-3) is mounted on a pair of U-shaped plates in the middle of the roller bracket (4-1); and the bottom hat-shaped profiling roller (4-4) is mounted on a pair of U-shaped plates at the rear end of the roller bracket (4-1).

7. The carbon fiber composite hat-shaped stringer forming equipment according to claim 1, characterized in that: The sliding guide rail (8) comprises two parallel first guide rails, a second guide rail, a first slider (8-1), a second slider (8-2), a third slider (8-3), a fourth slider (8-4), a fifth slider (8-5), a sixth slider (8-6), a first motor (8-7) and a second motor (8-8), wherein the third slider (8-3) is mounted on one end of the first guide rail, the sixth slider (8-6) is mounted on one end of the second guide rail, and the material roll quick change mechanism (1) is mounted on the third slider (8-3) and the sixth slider (8-6); the first slider (8-1) is mounted on the other end of the first guide rail, the fourth slider (8-4) is mounted on the other end of the second guide rail, and the heating device (3) is mounted on the first slider. (8-1) and the fourth slider (8-4); the second slider (8-2) is installed between the first slider (8-1) and the third slider (8-3); the fifth slider (8-5) is installed between the fourth slider (8-4) and the sixth slider (8-6); the guide device (2) is installed on the second slider (8-2) and the fifth slider (8-5); the first motor (8-7) is installed on one end of the first guide rail, and the second motor (8-8) is installed on one end of the second guide rail; the first slider (8-1), the second slider (8-2), and the third slider (8-3) are connected to the first motor (8-7), and the fourth slider (8-4), the fifth slider (8-5), and the sixth slider (8-6) are connected to the second motor (8-8).

8. The carbon fiber composite hat-shaped stringer forming equipment according to claim 1, characterized in that: A plurality of heating rods are arranged on the hat-shaped mold (6); the bottom bracket (5) comprises a bracket part (5-10) and a plurality of mold mounting plates sequentially arranged on the bracket part (5-10).

9. A carbon fiber composite hat-shaped long stringer forming process based on the equipment according to any one of claims 1 to 8, characterized in that: include: One end of the carbon fiber composite material prepreg tape on the material roll quick change mechanism (1) is pulled out, passed through one end of the guide mechanism (2), and then passed out from the other end; then the carbon fiber composite material prepreg tape is passed through one end of the heating device (3), and then passed out from the other end; and then placed between the rolling mechanism (4) and the hat-shaped mold (6); finally, the spiral clamping mechanism (9) fixes the carbon fiber composite material prepreg tape to one end of the hat-shaped mold (6); The hat-shaped mold (6) is heated to a temperature between 40° C. and 100° C., and the carbon fiber composite material prepreg tape is heated to a temperature between 40° C. and 100° C. by the heating device 3; The material roll quick-change mechanism (1), the guide mechanism (2) and the heating device (3) are fed linearly toward one end at the same speed at the same time, the roller pressing mechanism (4) performs downward pressing and linear feeding, and the roller pressing mechanism (4) cooperates with the hat-shaped mold (6) to perform roller forming; When the rolling mechanism (4), the material roll quick-changing mechanism (1), the guide mechanism (1) and the heating device (3) are rolled to the end of the long stringer, the carbon fiber composite material prepreg tape is cut to obtain a hat-shaped long stringer preform; The hat-shaped long stringer preform is solidified to obtain the hat-shaped composite material long stringer.

10. The carbon fiber composite hat-shaped stringer forming process according to claim 9, characterized in that: By adjusting the guide mechanism (2), the tension of the carbon fiber composite material prepreg tape is maintained between 1N and 10N; The downward pressure of the roller pressing mechanism (4) is 200-2000N, and the feeding speed of the material roll quick-changing mechanism (1), the guide mechanism (2), the heating device (3) and the roller pressing mechanism (4) is 2mm / s-30mm / s.

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