Composite material laying equipment

Abstract

The invention relates to the technical field of stacking forming equipment, and provides composite material laying equipment which comprises a material frame and a fiber laying head connected to the lower portion of the material frame. At least one group of discharging mechanisms are arranged on the material frame; the discharging mechanism comprises a material winding shaft, a material guide roller and a film winding shaft; the material frame is further provided with a transition wheel set and a wire guide assembly. The fiber placement head comprises two hanging plates which are oppositely arranged and used for being connected with the material frame. A wire feeding mechanism and a wire cutting mechanism are arranged between the two hanging plates; and the two hanging plates are also connected with a fiber placement roller. Therefore, the prefabricated filaments are sequentially pressed on the mold through the filament placement roller, and finally the product is obtained. An existing blade production mode is replaced, the production efficiency is improved, the defects of the existing production mode are eliminated, and the product quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of stacking and forming equipment, and in particular relates to composite material laying equipment. Background Art

[0002] Composite materials have the advantages of light weight, high strength, corrosion resistance, and high temperature resistance, and are used in aircraft engine blades. At present, RTM (resin transfer molding) molding technology is mostly used to manufacture blades.

[0003] The RTM molding process involves multiple steps, such as the production of fiber preforms, mold preparation, and resin infusion. Each step takes time, which makes the overall manufacturing cycle longer. Especially in the resin infusion step, it takes a lot of time to wait for the resin to fully penetrate the fiber preform. This greatly affects the production efficiency of the blade.

[0004] In addition, the fibers may overlap, bend, etc. during the preforming process; at the same time, the penetration of resin into the fiber preform during the infusion process varies in different parts, which may easily lead to uneven local fiber content and ultimately affect the overall performance of the blade.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0006] In view of the above-mentioned defects, the present invention mainly provides a composite material laying equipment to solve the technical problems of long blade molding cycle and many defects in the molding process.

[0007] In order to solve the above problems, the present invention provides a composite material placement equipment, including a material rack and a wire placement head connected below the material rack;

[0008] The material rack is provided with at least one set of unloading mechanism; the unloading mechanism comprises a material reel, a material guide roller and a film winding shaft; the material rack is also provided with a transition wheel set and a wire guide assembly;

[0009] The wire placing head comprises two hanging plates arranged opposite to each other and used for connecting the material rack; a wire feeding mechanism and a wire cutting mechanism are arranged between the two hanging plates; and the two hanging plates are also connected to wire placing rollers.

[0010] According to the composite material laying equipment of the present invention, the material guide roller and the film taking-up shaft of the material unwinding mechanism are respectively located on both sides of the material reel.

[0011] According to the composite material placement equipment of the present invention, the transition wheel set includes a plurality of transition wheels.

[0012] According to the composite material placement equipment of the present invention, the guide wire assembly includes a guide wire drive wheel and two reversing wheels; the guide wire drive wheel is connected to the two reversing wheels through a synchronous belt drive; the guide wire assembly also includes two guide wheels; the guide wire drive wheel is connected to the guide wire motor.

[0013] According to the composite material placement equipment of the present invention, a slide rail is fixedly arranged on the outer side of the hanging plate; a rail groove member slidably matched with the slide rail is fixedly arranged on the material rack; and a vertical cylinder connected to the hanging plate is also arranged on the material rack.

[0014] According to the composite material placement equipment of the present invention, a hot air gun is also provided on the wire placement head, and the hot air gun is connected to an air outlet pipe.

[0015] According to the composite material placement equipment of the present invention, the wire feeding mechanism comprises a wire feeding wheel plate and a pressure wheel assembly;

[0016] The wire feeding wheel plate is provided with at least one wire feeding wheel; the wire feeding wheel is transmission-connected to the wire feeding motor;

[0017] The pressure wheel assembly includes a pressure wheel plate arranged opposite to the wire feeding wheel plate; a pressure wheel cylinder is provided on the pressure wheel plate, the pressure wheel cylinder is connected to the pressure wheel frame, and a pressure wheel is provided on the pressure wheel frame; the pressure wheel is arranged opposite to the wire feeding wheel; the wire feeding wheel plate and the pressure wheel plate are both provided with wire passing grooves; scrapers are provided under the wire feeding wheel and the pressure wheel.

[0018] According to the composite material placement equipment of the present invention, the material discharge mechanisms are four groups; the wire feeding mechanisms are two groups, and the wire feeding wheel plate and the pressure wheel plate of each group of wire feeding mechanisms are provided with two wire passing grooves.

[0019] According to the composite material placement equipment of the present invention, the wire cutting mechanism comprises a wire breaking cylinder, the wire breaking cylinder is connected to a knife rod, and a wire cutting knife capable of extending into the wire passing groove is fixed at the end of the knife rod.

[0020] According to the composite material placement equipment of the present invention, two groups of wire feeding wheels are provided on the wire feeding wheel plate of the wire feeding mechanism, and one group of wire feeding wheels is transmission-connected to the wire feeding motor; the pressure wheel assembly is divided into two groups; and each group of wire feeding wheels corresponds to one pressure wheel.

[0021] In summary, the present invention sequentially presses the prefabricated wires onto the mold through the wire laying roller to finally produce the product, thereby replacing the existing production method of blades, improving production efficiency, eliminating the defects of the existing production method, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 yes Figure 1 Structural diagram of the middle material rack;

[0024] Figure 3 It is a structural schematic diagram of a material rack of the present invention from one direction;

[0025] Figure 4 It is a structural schematic diagram of a wire placing head of the present invention;

[0026] Figure 5 yes Figure 4 Schematic diagram of the internal structure of the wire laying head;

[0027] Figure 6 yes Figure 5 The structural diagram of the middle A direction;

[0028] Figure 7 yes Figure 5 A schematic structural diagram of a wire placing head from one direction;

[0029] Figure 8 yes Figure 7 Schematic diagram of the structure in the middle B direction;

[0030] Fig. 9 yes Figure 7 Schematic diagram of the structure in the C direction;

[0031] Fig.10 It is a structural schematic diagram of the wire pressing assembly of the present invention;

[0032] Fig.11 is a schematic structural diagram of a wire feeding assembly of the present invention;

[0033] Fig.12 yes Fig.11 Schematic diagram of the structure in the middle D direction;

[0034] Fig.13 is a schematic cross-sectional structural diagram of a wire laying roller of the present invention;

[0035] Fig.14 yes Fig.13 A schematic structural diagram of an embodiment of a volume adjustment shaft;

[0036] Fig.15 yes Fig.13 A schematic structural diagram of an embodiment of a volume adjustment shaft;

[0037] Fig.16 It is a schematic diagram of the wire laying operation principle of the present invention;

[0038] In the figure: 1-material reel, 11-material guide roller, 12-film collection shaft, 13-transition wheel; 2-wire guide drive wheel, 21-wire guide motor, 22-guide wheel, 23-reversing wheel; 3-vertical cylinder, 31-track groove member; 4-wire laying roller, 41-roller plate, 42-roller skin, 43-roller shaft, 44-main air pipe, 45-distribution air pipe, 46-rotating joint, 47-air cylinder, 471-vent, 472-ring groove; 48-air bag; 5-hanging plate, 51- Slide rail, 52-guide roller, 53-wire feeding motor, 54-transmission gear, 55-hot air gun, 56-air outlet pipe; 6-wire trough, 61-blowing hole, 62-wire breaking cylinder, 63-scraper, 64-knife rod, 65-wire cutting knife; 7-pressure wheel plate, 71-pressure wheel cylinder, 72-pressure wheel; 8-wire feeding wheel plate, 81-wire outlet plate, 82-wire feeding wheel, 83-wheel axle; 100-material rack, 200-wire laying head, 300-quick change plate, 400-mold. DETAILED DESCRIPTION

[0039] See also Figure 1 , the present invention provides a composite material placement equipment, including a material rack 100 and a wire placement head 200 connected below the material rack 100;

[0040] Optionally, a quick-change plate 300 is provided on the top of the material rack 100 for connecting to equipment such as a robot arm to achieve overall mobile operation of the laying equipment.

[0041] See also Figure 2 The material rack 100 is provided with at least one set of unloading mechanism; the unloading mechanism includes a material reel 1, a material guide roller 11 and a film-collecting shaft 12;

[0042] Also included are a transition wheel assembly and a guide wire assembly;

[0043] The material reel 1 is used to fix the material roll. The material roll of the present invention includes a prefabricated wire, which is wound on a barrel to form a material roll; the barrel is sleeved and fixed on the material reel 1. The prefabricated wire is pulled to realize continuous material discharge.

[0044] The prefabricated wire is wound onto the transition wheel set via the guide roller 11 and is sent to the wire placement head 200 via the wire guide assembly.

[0045] Optionally, the material reel 1 of the present invention is connected to a material unwinding motor. The material unwinding motor controls the rotation of the material reel 1 to reduce the tension on the preformed wire and prevent it from being broken due to excessive tension.

[0046] Optionally, the prefabricated yarn of the present invention is: a fiber yarn, and the outer layer of the fiber yarn is coated with resin.

[0047] Preferably, in order to prevent the prefabricated wires from sticking together, a separation film is arranged between two adjacent layers of prefabricated wires. When the prefabricated wires are pulled out, the separation film is synchronously wound onto the film collection shaft 12 and recovered.

[0048] Each set of unloading mechanisms can unload one prefabricated wire, and increasing the number of unloading mechanisms can improve the efficiency of wire laying. The number of unloading mechanisms is set according to the requirements of actual products. Preferably, the present invention has four sets of unloading mechanisms.

[0049] As a preferred solution, the material guide roller 11 and the film collection shaft 12 of the material unwinding mechanism are respectively located on both sides of the material reel 1, and the prefabricated wire and the separator film have different directions and do not interfere with each other.

[0050] See also Figure 3 As a preferred solution, the transition wheel group includes a plurality of transition wheels 13; the preformed wire is wound around each transition wheel 13 in sequence along the transmission direction;

[0051] The guide wire assembly includes a guide wire driving wheel 2 and two reversing wheels 23; the guide wire driving wheel 2 is connected to the two reversing wheels 23 through a synchronous belt drive; the guide wire assembly also includes two guide wheels 22; the guide wire driving wheel 2 is connected to the guide wire motor 21;

[0052] The prefabricated wire is wound around the guide wheels 22 and the reversing wheels 23 in sequence;

[0053] The wire guide motor 21 drives the wire guide driving wheel 2 to rotate, so that the two reversing wheels 23 generate a pulling force on the prefabricated wire and send it to the wire placement head 200.

[0054] See also Figure 4 The wire placing head 200 includes two hanging plates 5 arranged opposite to each other for connecting the material rack 100; Figure 5 A wire feeding mechanism and a wire cutting mechanism are arranged between the two hanging plates 5; the two hanging plates 5 are also connected to a wire laying roller 4;

[0055] See also Fig.16 , the prefabricated wire is sent to the mold by the wire feeding mechanism, and the wire laying roller 4 presses it on the mold 400 with a certain pressure. As the wire laying head 200 moves, the wire laying roller 4 rolls and lays the prefabricated wire on the surface of the mold 400. When it is pressed to the edge of the mold 400, the wire cutting mechanism is activated to cut it off. The wire laying head 200 returns to its position and continues the next pass of pressing and laying.

[0056] The prefabricated wire is continuously pressed on the mold 400 to avoid defects such as overlap, bending, etc. The resin of the prefabricated wire is coated on the outside of the fiber wire. During the wire feeding and pressing process, the resin is rolled open, avoiding the problem of uneven penetration of the resin in the fiber.

[0057] The shape of the surface of the mold 400 is similar to the shape of the product to be produced, and the prefabricated wires are sequentially pressed onto the mold 400 by the wire placing roller 4 of the placing equipment of the present invention, and finally the product is produced. The existing production method of blades is replaced, the production efficiency is improved, the defects of the existing production method are eliminated, and the product quality is improved.

[0058] See also Figure 6 As a preferred solution, a slide rail 51 is fixedly arranged on the outer side of the hanging plate 5; a rail groove member 31 that slides with the slide rail 51 is fixedly arranged on the material rack 100; and a vertical cylinder 3 connected to the hanging plate 5 is also arranged on the material rack 100;

[0059] The height of the wire placing head 200 can be adjusted by the vertical cylinder 3 so that the wire placing roller 4 is adapted to the structural undulations of the surface of the mold 400 .

[0060] As a preferred solution, a hot air gun 55 is further provided on the outer side of the hanging plate 5, and the hot air gun 55 is connected to an air outlet pipe 56;

[0061] During the wire laying operation, hot air is blown to the surface of the mold 400 through the air outlet pipe 56 for preheating, so that its temperature is increased, which is beneficial to the softening of the resin, so that the prefabricated wire can be better pressed on the mold 400, and the quality of the wire laying is improved.

[0062] See also Figure 7 and Figure 8 As an embodiment, the wire feeding mechanism includes a wire feeding wheel plate 8 and a pressure wheel assembly;

[0063] See also Fig.11 and Fig.12 , the wire feeding wheel plate 8 is provided with at least one wire feeding wheel 82; the wire feeding wheel 82 is transmission-connected to the wire feeding motor 53;

[0064] See also Fig.10 The pressure wheel assembly includes a pressure wheel plate 7 arranged opposite to the wire feeding wheel plate 8; a pressure wheel cylinder 71 is arranged on the pressure wheel plate 7, the pressure wheel cylinder 71 is connected to the pressure wheel frame, and a pressure wheel 72 is arranged on the pressure wheel frame; the pressure wheel 72 is arranged opposite to the wire feeding wheel 82; the wire feeding wheel plate 8 and the pressure wheel plate 7 are both provided with a wire passing groove 6;

[0065] The wire feeding wheel plate 8 and the wire passing groove 6 of the pressure wheel plate 7 are matched to form a wire path for the prefabricated wire. The prefabricated wire is straightened in the wire path to facilitate flattening and subsequent pressing operations.

[0066] More preferably, the number of the wire-passing slots 6 is the same as the number of the prefabricated wires.

[0067] The pressing wheel cylinder 71 pushes the pressing wheel 72 forward to press the prefabricated wire onto the wire feeding wheel 82; the wire feeding wheel 82 rotates and cooperates with the pressing wheel 72 to generate a pulling force on the prefabricated wire, and guides the prefabricated wire to the mold 400 below the wire laying roller 4. During the conveying process, the prefabricated wire is squeezed into a strip shape by the wire feeding wheel 82 and the pressing wheel 72, which is conducive to laying on the mold 400.

[0068] The rotation speed of the wire feeding motor 53 of the present invention is matched with that of the wire guiding motor 21, so that the tension of the prefabricated wire is appropriate, neither too great to cause breaking nor too small to cause folding.

[0069] Optionally, two groups of wire feeding wheels 82 are provided on the wire feeding wheel plate 8 of the wire feeding mechanism, and one group of wire feeding wheels 82 is transmission-connected to the wire feeding motor 53; the pressing wheel assembly consists of two groups; each group of wire feeding wheels 82 corresponds to a pressing wheel 72; the prefabricated wire is straightened during the flattening process, with uniform thickness and avoiding bending.

[0070] As an embodiment, a scraper 63 is provided under the wire feeding wheel 82 and the pressing wheel 72 to scrape off the resin residue adhering to the wire feeding wheel 82 and the pressing wheel 72 in real time to prevent it from sticking to the prefabricated wire and affecting the subsequent pressing quality.

[0071] As an embodiment, the discharge mechanism of the present invention is four groups; the wire feeding mechanism is two groups, and two wire passing grooves 6 are provided on the wire feeding wheel plate 8 and the pressure wheel plate 7 of each group of wire feeding mechanism.

[0072] Optionally, the wire feeding wheel 82 is connected to the wheel axle 83; a transmission gear 54 is sleeved on the wheel axle 83; the transmission gears 54 of the two wheel axles 83 are meshed together; the wire feeding motor 53 is connected to one of the wheel axles 83, so as to realize the synchronous and same-speed rotation of the two wire feeding wheels 82, so that the wire feeding speeds of the four prefabricated wires are the same, thereby ensuring the quality of the pressing.

[0073] Optionally, the lower end of the wire feeding wheel plate 8 is overlapped with a wire outlet plate 81 , and the wire outlet plate 81 is provided with a wire passing groove 6 ; after the prefabricated wire is flattened, it is guided from the wire outlet plate 81 to the mold 400 .

[0074] Optionally, a blowing hole 61 is opened at the bottom of the wire slot 6; a cold air flow is blown into the wire slot 6 from the blowing hole 61 to separate the flattened prefabricated wire from the wire slot 6 to prevent its resin from adhering to the slot wall and hindering the guidance of the prefabricated wire.

[0075] See also Fig. 9 The wire cutting mechanism includes a wire breaking cylinder 62, and the wire breaking cylinder 62 is connected to a knife rod 64. A wire cutting knife 65 is fixed at the end of the knife rod 64 and can extend into the wire cutting knife 65 in the wire passing groove 6; the knife rod 64 extends to cut the prefabricated wire.

[0076] The number of the wire cutting knives 65 is the same as the number of the wire passing grooves 6 , and each wire cutting knife 65 correspondingly cuts a prefabricated wire.

[0077] The laying roller 4 of the present invention is a rubber roller, the surface of which can be deformed under pressure, and the laying effect is good.

[0078] Since the surface of the mold 400 has an undulating structure, the deformation of the surface of the laying roller 4 is limited at the position of the concave structure, and the prefabricated wire at this position cannot be completely attached to the mold 400, reducing the laying effect.

[0079] See also Figure 13-15 To solve this problem, the present invention provides an embodiment of a wire laying roller 4, wherein the wire laying roller 4 comprises two roller shaft plates 41 arranged opposite to each other, a roller skin 42 is connected between the two roller shaft plates 41; the roller skin 42 and the two roller shaft plates 41 form a roller chamber;

[0080] Preferably, the roller skin 42 is made of rubber.

[0081] The roller plate 41 is fixedly connected to the roller shaft 43; a main air pipe 44 is provided at the center of the roller shaft 43; a plurality of air distribution pipes 45 connecting the main air pipe 44 and the roller chamber are also provided in the roller shaft 43; each air distribution pipe 45 is also connected to a volume adjustment shaft provided in the roller chamber;

[0082] The volume adjustment shaft includes an air cylinder 47; one end of the air cylinder 47 is provided with an air hole 471 connected to the air distribution pipe 45, and the other end is connected to the air bag 48;

[0083] During operation, gas is introduced into the air cylinder 47 at the recessed position of the mold, the airbag 48 expands, the volume of the roller chamber increases, and under the downward pressure of the wire laying head 200, the volume is automatically distributed in the roller chamber, so that the roller skin 42 located at the recessed position expands outward to fill the recessed position on the mold 400, thereby increasing the pressing force of the prefabricated wire at this position, ensuring the pressing effect, and avoiding the problem of incomplete pressing here.

[0084] Optionally, the roller cavity is filled with silicone oil to make the pressing force of the roller skin 42 on the surface of the mold 400 uniform.

[0085] As an embodiment, the airbag 48 may be hemispherical;

[0086] As an embodiment, the air bag 48 is in the shape of a bellows and can be expanded and contracted along the axial direction of the air cylinder 47. When expanded, it contacts the roller skin 42 from the inside to provide a pressing force.

[0087] As an embodiment, one end of the main air pipe 44 is connected to the air source through a rotary joint 46, and the other end is connected to the control valve through a rotary joint 46. When pressing the raised structure, the air is released through the control valve to adjust the air pressure in the roller chamber.

[0088] As a preferred solution, the wire laying head 200 of the present invention is also provided with a laser radar. Before the wire laying operation, the wire laying head 200 pre-scans the surface of the mold 400 according to the wire laying path, and sends the scan data to the control unit. During the wire laying operation, the roller chamber is inflated or deflated in advance according to the scan data, and the pressure in the roller chamber is adjusted in time to make the pressure of the pressing process uniform and ensure the pressing quality.

[0089] In summary, the present invention provides a composite material placement equipment, which presses the prefabricated wires onto the mold in sequence through the wire placement roller to finally produce the product, replacing the existing production method of blades, improving production efficiency, eliminating the defects of the existing production method, and improving product quality.

[0090] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A composite material placement equipment, characterized in that: It includes a material rack and a wire placing head connected below the material rack; The material rack is provided with at least one set of unloading mechanism; the unloading mechanism comprises a material reel, a material guide roller and a film winding shaft; the material rack is also provided with a transition wheel set and a wire guide assembly; The wire placing head comprises two hanging plates arranged opposite to each other and used for connecting the material rack; a wire feeding mechanism and a wire cutting mechanism are arranged between the two hanging plates; and the two hanging plates are also connected to wire placing rollers.

2. The composite material placement equipment according to claim 1, characterized in that: The material guide roller and film taking-up shaft of the material unwinding mechanism are respectively located on both sides of the material reel.

3. The composite material placement equipment according to claim 1, characterized in that: The transition wheel set includes a plurality of transition wheels.

4. The composite material placement equipment according to claim 1, characterized in that: The guide wire assembly includes a guide wire driving wheel and two reversing wheels; the guide wire driving wheel is connected to the two reversing wheels through a synchronous belt transmission; the guide wire assembly also includes two guide wheels; the guide wire driving wheel is connected to the guide wire motor.

5. The composite material placement equipment according to claim 1, characterized in that: A slide rail is fixedly arranged on the outer side of the hanging plate; a rail groove member which is slidably matched with the slide rail is fixedly arranged on the material rack; and a vertical cylinder connected to the hanging plate is also arranged on the material rack.

6. The composite material placement equipment according to claim 1, characterized in that: The wire placing head is also provided with a hot air gun, and the hot air gun is connected to an air outlet pipe.

7. The composite material placement equipment according to any one of claims 1 to 6, characterized in that: The wire feeding mechanism comprises a wire feeding wheel plate and a pressure wheel assembly; The wire feeding wheel plate is provided with at least one wire feeding wheel; the wire feeding wheel is transmission-connected to the wire feeding motor; The pressure wheel assembly includes a pressure wheel plate arranged opposite to the wire feeding wheel plate; a pressure wheel cylinder is provided on the pressure wheel plate, the pressure wheel cylinder is connected to the pressure wheel frame, and a pressure wheel is provided on the pressure wheel frame; the pressure wheel is arranged opposite to the wire feeding wheel; the wire feeding wheel plate and the pressure wheel plate are both provided with wire passing grooves; scrapers are provided under the wire feeding wheel and the pressure wheel.

8. The composite material placement equipment according to claim 7, characterized in that: There are four groups of material discharge mechanisms; there are two groups of wire feeding mechanisms, and two wire feeding grooves are arranged on the wire feeding wheel plate and the pressure wheel plate of each group of wire feeding mechanisms.

9. The composite material placement equipment according to claim 7, characterized in that: The wire cutting mechanism comprises a wire breaking cylinder, the wire breaking cylinder is connected to a knife rod, and a wire cutting knife is fixed at the end of the knife rod and can extend into the wire passing groove.

10. The composite material placement equipment according to claim 7, characterized in that: The wire feeding wheel plate of the wire feeding mechanism is provided with two groups of wire feeding wheels, wherein one group of wire feeding wheels is drivingly connected to the wire feeding motor; the pressure wheel assembly is divided into two groups; each group of wire feeding wheels corresponds to a pressure wheel.

Images