Preposed yarn box device, fiber placement head and fiber placement system

Abstract

The present invention provides a front yarn box device, a fiber placement head, and a fiber placement system, which relate to the technical field of automatic fiber placement. The front yarn box device includes a box body with a hollow interior for storing a pre-impregnated tow bobbin body, and the box body has an opening; a connecting part is detachably connected to the opening and seals the interior of the box body; at least one bobbin winding and unwinding assembly is arranged on the box body, and the bobbin winding and unwinding assembly is used for unwinding the tow from the pre-impregnated tow bobbin body placed on the bobbin winding and unwinding assembly and recycling the backing paper; a turning assembly is arranged on the box body; a first double-feed assembly is arranged on the box body and is located below the turning assembly, and the turning assembly is used for guiding the tow separated from the pre-impregnated tow bobbin body onto the first double-feed assembly; wherein, the first double-feed assembly is used for conveying the tow separated from the pre-impregnated tow bobbin body to the fiber placement head.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic fiber placement, and in particular to a front yarn box device, a fiber placement head, and a fiber placement system. Background Art

[0002] Due to a series of advantages such as light weight, high strength, high modulus, fatigue resistance, corrosion resistance, good designability, and good process performance, composite materials have been increasingly widely used in many industrial fields. They are particularly suitable for large structures and integral structures and are ideal aviation structural materials. With the enlargement of aircraft, the structural dimensions of composite material components used on aircraft have been continuously increasing, and the usage amount has also been continuously increasing. The automatic fiber placement technology for manufacturing large and complex composite material components has obtained rapid development and has been applied industrially.

[0003] During the placement process of a composite material automatic fiber placement machine, the final performance of the material is very sensitive to the forming process, and the final performance is also imparted to the structural member through the forming process. Therefore, the forming process parameters determine the performance and quality of the composite material structure. The placement tension and the feeding speed are important parameters of the fiber bundle placement forming process and have an important impact on the mechanical properties, density, and resin content of the placed product.

[0004] The existing feeding effect of the feeding device of the fiber placement head is not good, and when the feeding device is damaged, the production shutdown time is relatively long, thus affecting the production efficiency.

[0005] Therefore, the above technical problems need to be further solved. Summary of the Invention

[0006] The purpose of the present invention is to provide a front yarn box device, a fiber placement head, and a fiber placement system to alleviate the technical problems existing in the above related technologies.

[0007] The present invention provides a front yarn box device, including:

[0008] A box body, the interior of the box body is hollow, and the interior of the box body is used for storing a prepreg tow bobbin body, and the box body has an opening;

[0009] A connecting part, detachably connected to the opening and sealing the interior of the box body;

[0010] At least one bobbin winding and unwinding assembly, arranged on the box body, and the bobbin winding and unwinding assembly is used to release the tow from the prepreg tow bobbin body arranged on the bobbin winding and unwinding assembly and recycle the backing paper;

[0011] A turning assembly, arranged on the box body;

[0012] The first layer feeding component is arranged on the box body and is located below the steering component. The steering component is used to guide the tow that has separated from the prepreg tow bobbin body to the first layer feeding component.

[0013] Among them, the first layer feeding component is used to convey the tow that has separated from the prepreg tow bobbin body to the fiber placement head.

[0014] The purpose of this application and the technical problems solved by it can be further achieved by the following technical measures.

[0015] Optionally, for the aforementioned front yarn box device, it further includes:

[0016] The transition mounting plate is arranged at the bottom of the box body, and the transition mounting plate is used to connect the box body and the fiber placement head.

[0017] Optionally, for the aforementioned front yarn box device, it further includes:

[0018] The driving component is arranged inside the box body, and the output end of the driving component is used to be drivingly connected to the frame of the fiber placement head.

[0019] Optionally, for the aforementioned front yarn box device, it further includes:

[0020] The laser rangefinder is arranged on the box body.

[0021] Optionally, for the aforementioned front yarn box device, the connecting part includes:

[0022] The connecting flange is detachably connected to the opening and seals the opening;

[0023] Among them, the connecting flange is also used to connect to the gantry frame body or the industrial robot body.

[0024] On the other hand, this application provides a fiber placement head, including:

[0025] The frame and two pressing components arranged on the frame. Each pressing component is used to receive the tow that has separated from the prepreg tow bobbin body conveyed by the first layer feeding component of the front yarn box device and press the corresponding tow;

[0026] The second layer feeding component is arranged on the frame and is located below the pressing component. The feeding component is used to convey the tow that has separated from the prepreg tow bobbin body conveyed from the pressing component;

[0027] Two cutter assemblies, both connected to the frame and located below the second re-feeding assembly. Each cutter assembly is used to cut the corresponding tow that is conveyed by the second re-feeding assembly and separated from the prepreg tow bobbin body.

[0028] A tow combing assembly, connected to the frame and located below the cutter assemblies. The tow combing assembly is used to lay the tows cut by the two cutter assemblies on the to-be-laid mold body.

[0029] Optionally, the foregoing fiber placement head further includes:

[0030] A heating assembly, arranged on the frame and located at the rear side of the tow combing assembly;

[0031] wherein, the heating assembly is used to heat the cut tows laid on the to-be-laid mold body.

[0032] Optionally, the foregoing fiber placement head further includes:

[0033] A pressure roller assembly, connected to the frame and located on one side of the tow combing assembly. The pressure roller assembly is used to press the cut tows laid on the to-be-laid mold body.

[0034] Optionally, the foregoing fiber placement head further includes:

[0035] A button lock, arranged on the frame. The button lock is used for detachable connection with the corresponding cutter assembly.

[0036] On the other hand, the present application provides a fiber placement system, including:

[0037] A front yarn box device and a fiber placement head;

[0038] The front yarn box device includes a box body with a hollow interior for storing the prepreg tow bobbin body, and the box body has an opening;

[0039] A connecting part, detachably connected to the opening and sealing the interior of the box body;

[0040] At least one bobbin winding and unwinding assembly, arranged on the box body. The bobbin winding and unwinding assembly is used to release the tow from the prepreg tow bobbin body placed on the bobbin winding and unwinding assembly and recycle the backing paper;

[0041] A turning assembly, arranged on the box body;

[0042] The first wire feeding component is arranged on the box body and is located below the steering component. The steering component is used to guide the wire bundle separated from the prepreg wire bundle reel body to the first wire feeding component.

[0043] The fiber placement head includes a frame and two pressing components arranged on the frame.

[0044] The second wire feeding component is arranged on the frame and is located below the pressing component. The wire feeding component is used to convey the wire bundle separated from the prepreg wire bundle reel body conveyed from the pressing component.

[0045] Two cutter components are both connected to the frame and are located below the second wire feeding component. Each cutter component is used to cut the corresponding wire bundle conveyed by the second wire feeding component and separated from the prepreg wire bundle reel body.

[0046] The wire combing component is connected to the frame and is located below the cutter components. The wire combing component is used to lay the wire bundles cut by the two cutter components on the mold body to be laid.

[0047] Wherein, the box body is drivingly connected to the frame. The first wire feeding component is used to convey the wire bundle separated from the prepreg wire bundle reel body to the pressing component. Each pressing component is used to receive the wire bundle separated from the prepreg wire bundle reel body conveyed by the first wire feeding component and press the corresponding wire bundle.

[0048] By means of the above technical solutions, the front yarn box device, fiber placement head and fiber placement system of the present application at least have the following advantages:

[0049] The front yarn box device provided by the embodiment of the present application has a bearing shaft passing through the inside of the prepreg tow spool body to hold the prepreg tow spool body. The driving motor is arranged on the box body, and the driving motor drives the bearing shaft to rotate through its driving shaft, realizing the transmission connection of the prepreg tow spool body, thereby accurately controlling the feeding speed and the strip tension, ensuring a constant laying tension and a stable feeding speed, improving the quality and performance of the product. Moreover, the design of the bearing shaft can adapt to prepreg tow spool bodies of different sizes, ensuring the versatility and flexibility of the equipment. In addition, after the top surface of the first limiting member abuts against the prepreg tow spool body, it can prevent the prepreg tow spool body from sliding or shifting on the bearing shaft, ensuring its fixed position. The elastic limiting portion of the second limiting member abuts against the end of the prepreg tow spool body, preventing the prepreg tow spool body from loosening or shifting during the feeding process. When the prepreg tow spool body needs to be disassembled, the elastic limiting portion can be pressed to make its top surface shrink to be flush with the surface of the bearing shaft, and then the prepreg tow spool body can be withdrawn along the axial direction of the bearing shaft to disassemble the prepreg tow spool body. Similarly, when installing the prepreg tow spool body, the inner cylinder of the prepreg tow spool body can be aligned with the bearing shaft and pushed along the axial direction of the bearing shaft, so that the inner wall of the prepreg tow spool body compresses the elastic limiting portion, enabling the prepreg tow spool body to be loaded onto the bearing shaft. When the prepreg tow spool body is installed in place, the end of the prepreg tow spool body disengages from the top surface of the elastic limiting portion, and the elastic limiting portion recovers its deformation under the elastic action and abuts against the end face of the prepreg tow spool body, realizing the limitation of the prepreg tow spool body. The disassembly and assembly operations are simple and time-consuming, which can reduce the production downtime during the replacement process, thereby improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0051] Figure 1 It is a schematic structural diagram of the fiber placement system provided by the embodiment of the present invention;

[0052] Figure 2 It is a schematic structural diagram of the box body of the front yarn box device provided by the embodiment of the present invention;

[0053] Figure 3 It is a schematic structural diagram of the spool winding and unwinding assembly of the front yarn box device provided by the embodiment of the present invention;

[0054] Figure 4 It is a schematic structural diagram of the steering assembly of the front yarn box device provided by the embodiment of the present invention;

[0055] Figure 5 Schematic diagram of the first re-feeding component of the front yarn box device provided by the embodiment of the present invention;

[0056] Figure 6 Schematic diagram of the transition mounting plate of the front yarn box device provided by the embodiment of the present invention;

[0057] Figure 7 Schematic diagram of the drive component of the front yarn box device provided by the embodiment of the present invention;

[0058] Figure 8 Schematic diagram of the fiber placement head provided by the embodiment of the present invention;

[0059] Figure 9 Schematic diagram of the second re-feeding component of the fiber placement head provided by the embodiment of the present invention.

[0060] Icon:

[0061] 1. Box body; 2. Connection part; 3. Material roll winding and unwinding component; 4. Steering component; 5. First re-feeding component; 6. Transition mounting plate; 7. Drive component; 8. Pressing component; 9. Second re-feeding component; 10. Cutting knife component; 11. Wire combing component; 12. Heating component; 13. Pressure roller component. Detailed implementation manners

[0062] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0063] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0064] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] Embodiment 1

[0066] As Figures 1-7 shown, the front yarn box device proposed in the embodiment of the present invention includes:

[0067] A box body 1, the interior of the box body 1 is hollow, and the interior of the box body 1 is used to store the pre-impregnated tow bobbin body, and the box body 1 has an opening;

[0068] A connecting part 2, detachably connected to the opening and sealing the interior of the box body 1;

[0069] At least one bobbin winding and unwinding assembly 3, arranged on the box body 1, and the bobbin winding and unwinding assembly 3 is used to release the tow from the pre-impregnated tow bobbin body placed on the bobbin winding and unwinding assembly 3 and recycle the backing paper;

[0070] A turning assembly 4, arranged on the box body 1;

[0071] A first re-feed assembly 5, arranged on the box body 1 and located below the turning assembly 4, and the turning assembly 4 is used to guide the tow separated from the pre-impregnated tow bobbin body onto the first re-feed assembly 5;

[0072] Among them, the first re-feed assembly 5 is used to convey the tow separated from the pre-impregnated tow bobbin body to the fiber placement head.

[0073] Specifically, the interior of the box body 1 is used to store the pre-impregnated tow bobbin body. The pre-impregnated tow bobbin body is a key material for fiber placement in an automatic fiber placement machine, and it is mainly composed of a composite material formed by winding carbon fiber or other high-performance fibers pre-impregnated with resin. When the device needs to work, technicians can place the pre-impregnated tow bobbin body stored in the box body 1 through the opening of the box body 1 and place it on the bobbin winding and unwinding assembly 3. The connecting part 2 is detachably connected to the opening and seals the interior of the box body 1. The number of bobbin winding and unwinding assemblies 3 can be determined according to actual needs, and this application does not make a limitation.

[0074] Each bobbin winding and unwinding assembly 3 includes a bobbin winding and unwinding part, a backing paper recycling part, and a dancer roller part;

[0075] The material roll taking-up and unwinding part includes a driving component, a bearing component and a limiting component, wherein the driving component includes a driving motor, the driving motor is arranged on the box body 1, the driving motor has a driving shaft, the bearing component includes a bearing shaft, the bearing shaft is transmission-connected with the driving shaft and is used to penetrate into and carry the prepreg bundle material roll body, the limiting component includes a first limiting member and a second limiting member, the first limiting member is arranged at one end of the bearing shaft close to the driving shaft, the top surface of the first limiting member protrudes from the outer wall of the bearing shaft and is used to abut against the inner wall of the bundle roll, the second limiting member is arranged at one end of the bearing shaft away from the driving component, the second limiting member has an elastic limiting portion, the top surface of the elastic limiting portion protrudes from the outer wall of the bearing shaft and is used to abut against the end of the prepreg bundle material roll body.

[0076] The bearing shaft is passed through the roll of the prepreg bundle material roll body to hold the prepreg bundle material roll body. The driving motor is arranged on the box body 1. The driving motor drives the bearing shaft to rotate through its driving shaft to realize the transmission connection with the prepreg bundle material roll body, thereby accurately controlling the discharge speed and the belt tension, ensuring a constant laying tension and a stable discharge speed, and improving the quality and performance of the product. In addition, the design of the bearing shaft can adapt to prepreg bundle material roll bodies of different sizes, ensuring the versatility and flexibility of the equipment. In addition, after the top surface of the first limiting member abuts against the prepreg bundle material roll body, it can prevent the prepreg bundle material roll body from sliding or shifting on the bearing shaft, ensuring its position is fixed. The elastic limiting portion of the second limiting member abuts against the end of the prepreg bundle material roll body to prevent the prepreg bundle material roll body from loosening or shifting during the discharge process. When removing the prepreg bundle material roll body, the elastic limiting part can be pressed to shrink its top surface to be flush with the surface of the load-bearing shaft, and then the prepreg bundle material roll body can be pulled out along the axial direction of the load-bearing shaft to remove the prepreg bundle material roll body. Similarly, when installing the prepreg bundle material roll body, the inner tube of the prepreg bundle material roll body can be aligned with the load-bearing shaft and pushed in along the axial direction of the load-bearing shaft, so that the inner wall of the prepreg bundle material roll body compresses the elastic limiting part, so that the prepreg bundle material roll body can be loaded onto the load-bearing shaft. When the prepreg bundle material roll body is installed in place, the end of the prepreg bundle material roll body is separated from the top surface of the elastic limiting part, and the elastic limiting part recovers its deformation under the action of elasticity and abuts against the end face of the prepreg bundle material roll body to achieve the limitation of the prepreg bundle material roll body. The disassembly and assembly operation is simple and time-saving, which can reduce the production downtime during the replacement process, thereby improving production efficiency.

[0077] The backing paper recycling part includes a driving assembly, a guiding assembly, a bearing assembly and a locking assembly. The driving assembly includes a driving member and a rotating shaft. One end of the driving member is connected to the box body 1, and the rotating shaft is in transmission connection with the driving shaft of the driving member. The guiding assembly includes a connecting member and a rotating member. The connecting member is connected to the driving member, the rotating member is arranged around the rotating shaft and rotates with the rotating shaft. The rotating member is rotatably connected to the connecting member, and a limiting portion is arranged on the rotating member. The bearing assembly includes a backing paper reel for winding the backing paper. An axially extending empty groove is formed on the surface of the backing paper reel. The backing paper reel is sleeved outside the rotating shaft. A positioning portion is arranged at one end of the backing paper reel and is in fit connection with the limiting portion so that the backing paper reel rotates with the rotating shaft. The locking assembly is detachably arranged at the end of the rotating shaft away from the guiding assembly and is in fit connection with the connecting end to clamp the bearing assembly.

[0078] The driving member is arranged on the box body 1, the rotating shaft is in transmission connection with the driving member, and the rotating member is connected to the driving member through the connecting member, so that the relative positions of the connecting member and the driving member are kept fixed. The backing paper reel is sleeved on the rotating shaft and is in transmission connection with the rotating member. In this structure, the backing paper reel rotates following the driving member, and the connection structure between the backing paper reel and the rotating member can be ensured under the cooperation of the positioning portion and the limiting portion, avoiding the backing paper reel from moving or the rotating shaft being unable to drive due to excessive weight. When using the backing paper winding device, first attach one end of the backing paper to the surface of the backing paper reel, and install the locking assembly to the end of the rotating shaft to clamp the backing paper reel. Then control the driving member to drive the backing paper reel to rotate to wind the backing paper. After winding, detach the locking assembly from the rotating shaft and pull out the backing paper reel from the rotating shaft. Since an axially extending empty groove is arranged on the surface of the backing paper reel, the backing paper reel can be compressed by squeezing the backing paper wound outside the backing paper reel, so that the outer wall of the backing paper reel squeezes the empty groove, and the outer diameter of the backing paper reel becomes smaller under the extrusion, so as to take out the backing paper reel from the wound backing paper. The disassembly is very simple and labor-saving, thus improving the efficiency of backing paper recycling and being able to avoid damage to the backing paper.

[0079] The dancing wheel part is a prior art and can be obtained by procurement. The dancing wheel part, the backing paper recycling part and the material roll winding and unwinding part cooperate with each other to guide the filaments of the prepreg filament bundle body to the steering assembly 4.

[0080] The steering assembly 4 includes a mounting frame and at least one pendulum wheel assembly. The pendulum wheel assembly is rotatably mounted on the mounting frame, and the mounting frame is mounted thereon. The pendulum wheel assembly includes a tow steering frame and at least one roller rotatably mounted on the tow steering frame. The tow steering frame includes two opposite and spaced-apart retaining walls, namely a first retaining wall and a second retaining wall. A rotating shaft can be provided at the center of the roller, and the wheel surface of the roller rotates around the central rotating shaft. The roller is rotatably connected between the first retaining wall and the second retaining wall through its rotating shaft. Opposite ends of the rotating shaft are respectively rotatably connected to the first retaining wall and the second retaining wall, and there is a spacing between two opposite wheel surfaces of the roller, so that an annular groove surrounded along the circumferential direction of the rotating shaft is formed between the bushings of the two wheel surfaces of the rotating shaft. The annular groove forms a tow steering channel, so that the tow is introduced from one end side (tow inlet side) of the annular groove, bypasses the annular groove and is discharged from the other end side (tow outlet side). Specifically, the tow can be released from the tow reel winding and unwinding unit. The tow inlet side of the annular groove of the pendulum wheel assembly can be arranged close to the tow reel winding and unwinding unit, and the tow outlet of the tow steering device correspondingly leads to the first doubling assembly 5.

[0081] The steering device provided in this embodiment adopts a pendulum wheel assembly rotatably connected to the mounting frame, making the pendulum wheel assembly rotate flexibly with multiple rotation angles. This enables the tow inlet side at the position of the annular groove of the pendulum wheel assembly to flexibly adapt to the tows released from the tow reel winding and unwinding unit at different angles, and flexibly adapt to different feeding angles of the tow, rather than having the tow reel winding and unwinding unit looking for a fixed tow inlet slot. Thus, it effectively avoids problems such as tow flipping, offset, and knotting, improves the stability and accuracy of tow transmission, reduces maintenance costs, and enhances adaptability. In addition, after the tow is introduced into the annular groove of the flexibly swinging pendulum wheel assembly, the tow is limited and blocked by the two opposite wheel surfaces of the annular groove, effectively limiting the transportation path of the tow, so that the tow can always remain in a predetermined position during transportation. At the same time, due to the flexible swing of the pendulum wheel assembly, while limiting, it will not give excessive resistance to the tow. While playing a limiting role, it will not damage the tow, further avoiding problems such as tow offset, friction damage, flipping, and falling off, effectively improving the conveying accuracy of the tow, ensuring the stability of the tow during high-speed transportation, reducing wear, enhancing adaptability, reducing maintenance costs, and thereby improving the quality of the final product.

[0082] The first layer feeding assembly 5 includes a fixed bracket, a driving motor, an active runner assembly, a guiding assembly, a spacer assembly and a passive wheel assembly. The driving motor is arranged on one side of the fixed bracket, and the active runner assembly is arranged on the other side of the fixed bracket. The active runner assembly is in transmission connection with the driving motor. The guiding assembly is arranged above the active runner assembly through the fixed bracket, and the spacer assembly is arranged below the active runner assembly through the fixed bracket. The passive wheel assembly is arranged in the middle of the fixed bracket. The tow is clamped between the passive wheel assembly and the active runner assembly. The fixed bracket includes a left fixed bracket, a right fixed bracket, an upper bracket and a lower bracket. The upper bracket is in a door shape. One end of the upper bracket is connected to the left fixed bracket by bolts, and the other end of the upper bracket is connected to the right fixed bracket by bolts. The upper bracket is vertically connected to the two parallel lower brackets. The passive wheel assembly is fixedly connected between the two parallel lower brackets. The right fixed bracket is fixedly connected to the active runner assembly. The upper bracket is fixedly connected to the guiding assembly. The bottom end of the lower bracket is fixedly connected to the spacer assembly. The active runner assembly includes a pulley bracket, a first rotating shaft, a transmission wheel, a coupling, a second rotating shaft, an active runner bracket, a rotating gear and an active runner. The pulley bracket is fixedly connected to the end of the right fixed bracket. The first rotating shaft passes through the pulley bracket. The transmission wheel is sleeved on the first rotating shaft. The transmission wheel is in transmission connection with the driving motor. One end of the first rotating shaft away from the right fixed bracket is rotationally connected to the second rotating shaft through the coupling. The second rotating shaft passes through the active runner bracket. The active runner bracket is fixedly connected to the passive wheel assembly. The rotating gear is sleeved in the middle of the second rotating shaft. The outer peripheral surface of the rotating gear is clamped with the inner peripheral surface of the active runner, so that the rotating gear drives the active runner to rotate. The active runner is arranged opposite to the passive wheel assembly. The passive wheel assembly includes an outer bracket, a cylinder bracket, a cylinder, a telescopic rod, a passive wheel bracket and a passive wheel. The outer bracket is in a door shape. The surface of the outer bracket is fixedly connected to the active runner assembly. A plurality of parallel cylinder brackets are arranged inside the outer bracket. One end of each cylinder bracket is provided with a cylinder. Through holes are formed on the outer surface of each cylinder bracket. The telescopic rod is arranged in the through hole. The telescopic rod passes through the through hole and is fixedly connected to the passive wheel bracket. The end of the passive wheel bracket away from the cylinder bracket is fixedly connected to the passive wheel. The passive wheel is arranged opposite to the active runner assembly. The guiding assembly includes a guiding bracket, a partition, a first fixed shaft and a first sliding roller. The guiding bracket is fixedly connected to the top end of the upper bracket. A plurality of partitions are arranged on the guiding bracket. A sliding groove is formed between two adjacent partitions. The first fixed shaft is arranged on the guiding bracket. The first sliding rollers corresponding to the number of the sliding grooves are sleeved on the first fixed shaft.

[0083] The drive motor is fixed to the box body 1 by bolts, and the fixing bracket in a protruding shape is connected to the box body 1 by bolts. The fixing bracket extends outwardly and is provided with a driving runner assembly. The driving runner assembly realizes power transmission by means of a synchronous belt or a chain using the drive motor, so that the tow can be transmitted downward. At the top end of the fixing bracket, a guiding assembly is fixedly connected by bolts. The guiding assembly is located above the driving runner assembly, so that after the tow passes through the guiding assembly, it can be clamped between the driving runner assembly and the driven wheel assembly. The setting of the guiding assembly can separate each tow from each other to avoid interference between tows. The bottom end of the fixing bracket is designed in an arc shape. At the central position of the fixing bracket, a driven wheel assembly is provided. The driven wheel assembly is close to the driving runner assembly, so that the tow is clamped between the driven wheel assembly and the driving runner assembly, and the distance between the driven wheel assembly and the driving runner assembly can be controlled separately to control each tow individually. The fixing bracket is bolted to the left fixing frame and the right fixing frame at both ends through a door-shaped upper bracket. At the bottom end of the upper bracket, two parallel lower brackets are vertically arranged downward. A space is formed in the middle of the two parallel lower brackets to fixedly connect the driven wheel assembly. At the front end of the right fixing frame, the driving runner assembly is fixed by bolts. A gap for clamping the tow is left between the driving runner assembly and the driven wheel assembly which are close to each other. At the top end of the upper bracket, the guiding assembly is fixed by bolts. At the bottom ends of the two lower brackets, a spacer assembly is fixedly connected. The pulley bracket is in a right-angled shape. One end is fixedly connected to the end of the right fixing frame, and a hole is opened at the other end and a first rotating shaft is inserted into the hole. A transmission wheel is sleeved on the first rotating shaft. The transmission wheel is connected in transmission with an output wheel arranged on the output shaft of the drive motor through a synchronous belt, so that the transmission wheel rotates and drives the first rotating shaft to rotate. Since the first rotating shaft is connected to a second rotating shaft through a coupling, the second rotating shaft also rotates accordingly. The second rotating shaft is arranged in the driving runner bracket. The driving runner bracket is fixedly connected to the driven wheel assembly through a threaded hole. The rotating gear on the second rotating shaft rotates accordingly, and drives the driving runner clamped on the surface to rotate, so as to realize the purpose that the driving runner assembly can clamp the tow with the driven wheel assembly and rotate downward to drive the tow to move downward. The outer bracket is in a door shape. The top end of the outer bracket is fixedly connected to the upper bracket and is fixed between the two parallel lower brackets. The front surface of the outer bracket is fixedly connected to the driving runner assembly. Inside the door shape of the outer bracket, a cylinder bracket is fixedly connected. One end of the cylinder bracket is provided with 1 to 3 cylinders, and through holes are opened on the cylinder bracket. A telescopic rod is inserted into the through holes, so that the telescopic rod is arranged in parallel with the cylinders. The telescopic rod passes through the through hole and is fixedly connected to a driven wheel bracket. One end of the driven wheel bracket away from the cylinder bracket is fixedly connected to a driven wheel, so that the cylinder exerts a forward pushing force. The driven wheel bracket can slide forward through the telescopic rod. Furthermore, the driven wheel is driven to move forward. At this time, the driving runner is located at the front end of the driven wheel. In this way, the distance between the driven wheel and the driving runner is controlled.When a certain wire bundle needs to be delivered, the corresponding cylinder will drive the passive wheel to extend, and the passive wheel extends to clamp the wire bundle with the active rotating wheel, and will drive the wire bundle to move downward. The top of the upper bracket is fixedly connected to a guide frame, and a number of trapezoidal partitions are arranged on the guide frame, so that sliding grooves are formed between two adjacent partitions. The number of sliding grooves is the same as the number of actually clamped wire bundles, so that the turned wire bundles are separated and smoothly enter between the active rotating wheel and the passive wheel below. A first fixed shaft is provided on the guide frame, and each sliding groove has a first sliding roller fixedly mounted on the first fixed shaft to prevent the wire bundle from sliding out of the guide assembly during the downward movement, thereby limiting the position of the wire bundle.

[0084] like Figure 1 and Figure 6 As shown, in a specific implementation, it also includes:

[0085] A transition mounting plate 6 is disposed at the bottom of the box body 1 , and the transition mounting plate 6 is used to connect the box body 1 with a wire placing head.

[0086] Specifically, the transition mounting plate 6 is used to provide support for the wire placement head.

[0087] like Figure 1 and Figure 7 As shown, in a specific implementation, it also includes:

[0088] The driving assembly 7 is arranged on the inner side of the box body 1, and the output end of the driving assembly 7 is used for connecting with the frame drive of the wire placing head.

[0089] Specifically, the driving assembly 7 includes a cylinder, the telescopic end of the cylinder is drivingly connected to the frame of the wire placing head, and the cylinder body end of the cylinder away from the telescopic end is connected to the inner side of the box body 1.

[0090] In the specific implementation, it also includes:

[0091] The laser rangefinder is arranged on the box 1 .

[0092] Specifically, the laser rangefinder can accurately measure the distance during the wire laying process to ensure the accuracy and consistency of the wire laying. In the automatic wire laying system, the laser rangefinder can help determine the position of the wire laying head, thereby guiding it to lay along the predetermined path. The laser rangefinder can also be used to detect quality problems in the wire laying process, such as wire offset, missing or overlapping. Through real-time monitoring and feedback, problems can be discovered and corrected in a timely manner to ensure the quality of wire laying.

[0093] like Figures 1-2 As shown, in a specific implementation, the connecting portion 2 includes:

[0094] A connecting flange, which is detachably connected to the opening and seals the opening;

[0095] Wherein, the connecting flange is also used to connect to the gantry frame body or the industrial robot body.

[0096] Embodiment 2

[0097] As Figure 1 and Figures 8-9 shown, the fiber placement head proposed in Embodiment 2 of the present invention includes:

[0098] A frame and two pressing components 8 arranged on the frame. Each pressing component 8 is used to receive the fiber bundle separated from the prepreg fiber bundle reel body conveyed by the first refeeding component 5 of the front yarn box device, and press the corresponding fiber bundle;

[0099] A second refeeding component 9, arranged on the frame and located below the pressing component 8. The refeeding component is used to convey the fiber bundle separated from the prepreg fiber bundle reel body conveyed from the pressing component 8;

[0100] Two cutter components 10, both connected to the frame and located below the second refeeding component 9. Each cutter component 10 is used to cut the corresponding fiber bundle conveyed by the second refeeding component 9 and separated from the prepreg fiber bundle reel body;

[0101] A fiber combing component 11, connected to the frame and located below the cutter components 10. The fiber combing component 11 is used to lay the fiber bundles cut by the two cutter components 10 on the mold body to be laid.

[0102] Specifically, the frame can play a role in supporting and fixing. The frame is used to connect to the driving device of the front yarn box device. The driving device is used to provide power for the device. The driving device is a cylinder, and the telescopic end of the cylinder is connected to the frame to drive the frame to reciprocate along Figure 1 the vertical direction shown.

[0103] Two pressing components 8 are installed on the frame. Each pressing component 8 is used to receive the fiber bundle separated from the prepreg fiber bundle reel body conveyed by the first refeeding component 5 of the front yarn box device, and press the corresponding fiber bundle to prevent the fiber bundle body from being retracted due to the tension generated by the fiber bundle body during the fiber placement process, thereby affecting the fiber placement effect of the device.

[0104] The second refeeding component 9 is installed on the frame through a swivel bolt and is located below the pressing component 8. The second refeeding component 9 can convey the eight fiber bundle bodies conveyed by the two pressing components 8 together to the corresponding cutter component 10 on one side.

[0105] The cutter assembly 10 is connected to the frame so that the cutter assembly 10 is fixed on the frame. Each cutter assembly 10 is used to cut the tow body delivered from the corresponding side of the re-feeding assembly.

[0106] The combing assembly 11 is connected to the frame and is used to gather the eight filament bundle bodies cut by the two cutter assemblies 10 and lay them on the mold body to be laid, so as to achieve the wire laying effect of the device.

[0107] The front yarn box device provided in the first embodiment of the present invention uses a clamping assembly 8 so that each clamping assembly 8 can compress the four yarn bundle bodies delivered from the corresponding steering device body to avoid the phenomenon that the yarn bundle bodies are pulled back due to the tension force generated by the yarn bundle bodies during the yarn laying process of the device, thereby affecting the yarn laying effect of the device.

[0108] like Figure 8 As shown, in a specific implementation, it also includes:

[0109] A heating assembly 12 is disposed on the frame and located at the rear side of the combing assembly 11;

[0110] The heating component 12 is used to heat the cut filament bundles laid on the mold body to be laid.

[0111] Specifically, the heating component 12 heats the cut filament bundle body laid on the mold body to be laid so as to maintain the filament bundle body at an appropriate temperature, thereby ensuring that the filament bundle body can be evenly and tightly fitted to the surface to be laid of the mold body to be laid.

[0112] like Figure 8 As shown, in a specific implementation, it also includes:

[0113] The pressing roller assembly 13 is connected to the frame and is located on one side of the combing assembly 11. The pressing roller assembly 13 is used to press the cut filament bundles laid on the mold body to be laid.

[0114] Specifically, the pressing roller assembly 13 is used to press the cut tow body laid on the mold body to be laid, so that the tow body can be evenly and tightly fitted with the surface to be laid of the mold body to be laid.

[0115] In the specific implementation, it also includes:

[0116] A button locker is arranged on the frame, and the button locker is used to be detachably connected to the corresponding cutter assembly 10.

[0117] Specifically, a button lock is provided on the cutter assembly 10. The button lock on the cutter assembly 10 cooperates with the button lock on the frame to fix the cutter assembly 10 to the frame.

[0118] The button lock is a mechanical device mainly used to replace traditional bolts for quick locking operations. It realizes locking and unlocking through button operations without the need for tools, thus improving work efficiency, especially suitable for occasions that require frequent installation and disassembly.

[0119] Embodiment III

[0120] As Figures 1-9 shown, Embodiment III of the present invention proposes a fiber placement system, including:

[0121] A front yarn box device and a fiber placement head;

[0122] The front yarn box device includes a box body 1. The interior of the box body 1 is hollow and is used to store a prepreg tow bobbin body. The box body 1 has an opening;

[0123] A connecting portion 2, detachably connected to the opening and sealing the interior of the box body 1;

[0124] At least one bobbin winding and unwinding assembly 3, provided on the box body 1. The bobbin winding and unwinding assembly 3 is used to unwind the tow from the prepreg tow bobbin body placed on the bobbin winding and unwinding assembly 3 and recycle the backing paper;

[0125] A turning assembly 4, provided on the box body 1;

[0126] A first re-feed assembly 5, provided on the box body 1 and located below the turning assembly 4. The turning assembly 4 is used to guide the tow separated from the prepreg tow bobbin body to the first re-feed assembly 5;

[0127] The fiber placement head includes a frame and two pressing assemblies 8 provided on the frame;

[0128] A second re-feed assembly 9, provided on the frame and located below the pressing assemblies 8. The re-feed assembly is used to convey the tow separated from the prepreg tow bobbin body conveyed by the pressing assemblies 8;

[0129] Two cutter assemblies 10, both connected to the frame and located below the second re-feed assembly 9. Each cutter assembly 10 is used to cut the corresponding tow conveyed by the second re-feed assembly 9 and separated from the prepreg tow bobbin body;

[0130] The wire combing assembly 11 is connected to the frame and is located below the cutter assembly 10. The wire combing assembly 11 is used to lay the tow after being cut by the two cutter assemblies 10 on the mold body to be laid;

[0131] Wherein, the box body 1 is drivingly connected to the frame. The first double-feed assembly 5 is used to convey the tow separated from the prepreg tow bobbin body to the pressing assembly 8. Each pressing assembly 8 is used to receive the tow separated from the prepreg tow bobbin body conveyed by the first double-feed assembly 5 and press the corresponding tow.

[0132] Specifically, the fiber placement system in the third embodiment can directly use the front yarn box device provided in the first embodiment and the fiber placement head provided in the second embodiment. The specific implementation structure can refer to the relevant content described in the first and second embodiments, which will not be elaborated here.

[0133] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fiber placement system, characterized in that, It includes a pre-positioned yarn box device and a fiber placement head. The pre-positioned yarn box device includes: a box body, a connecting part, a bobbin winding and unwinding assembly, a steering assembly, and a first re-feed assembly; The interior of the box body is hollow and is used to store the pre-impregnated tow bobbin body. There is an opening on the box body; The connecting part is detachably connected to the opening and seals the interior of the box body; The bobbin winding and unwinding assembly is arranged on the box body. The bobbin winding and unwinding assembly is used to unwind the tow from the pre-impregnated tow bobbin body placed on the bobbin winding and unwinding assembly and recycle the backing paper; The steering assembly is arranged on the box body; The first re-feed assembly is arranged on the box body and is located below the steering assembly. The steering assembly is used to guide the tow separated from the pre-impregnated tow bobbin body onto the first re-feed assembly; Among them, the first re-feed assembly is used to convey the tow separated from the pre-impregnated tow bobbin body to the fiber placement head; The fiber placement head includes: a frame, a pressing assembly, a second re-feed assembly, a cutting tool assembly, and a combing assembly; There are two pressing assemblies arranged on the frame. Each pressing assembly is used to receive the tow separated from the pre-impregnated tow bobbin body conveyed by the first re-feed assembly of the pre-positioned yarn box device and press the corresponding tow; The second re-feed assembly is arranged on the frame and is located below the pressing assembly. The re-feed assembly is used to convey the tow separated from the pre-impregnated tow bobbin body conveyed by the pressing assembly; There are two cutting tool assemblies, both of which are connected to the frame and are located below the second re-feed assembly. Each cutting tool assembly is used to cut the corresponding tow conveyed by the second re-feed assembly and separated from the pre-impregnated tow bobbin body; The combing assembly is connected to the frame and is located below the cutting tool assembly. The combing assembly is used to lay the tow cut by the two cutting tool assemblies on the mold body to be laid; The steering assembly includes a mounting frame and a swivel wheel assembly rotatably connected to the mounting frame. The mounting frame is arranged on the box body. The swivel wheel assembly includes a tow steering frame and at least one roller rotatably mounted on the tow steering frame. A rotating shaft is provided at the center of the roller, and an annular groove is formed on the roller. The annular groove forms a tow steering channel corresponding to the tow outlet and leading to the first re-feed assembly.

2. The fiber placement system according to claim 1, wherein It further includes: A transition mounting plate is arranged at the bottom of the box body. The transition mounting plate is used to connect the box body to the fiber placement head.

3. The fiber placement system according to claim 1, characterized in that It further includes: A driving assembly. The driving assembly is arranged inside the box body. The output end of the driving assembly is used to be drivingly connected to the frame of the fiber placement head.

4. The fiber placement system according to claim 1, characterized in that, It further includes: A laser rangefinder is arranged on the box body.

5. The fiber placement system according to claim 1, wherein, The connecting part includes: A connecting flange. The connecting flange is detachably connected to the opening and seals the opening; Among them, the connecting flange is also used to be connected to the gantry frame body or the industrial robot body.

6. The fiber placement system according to claim 1, characterized in that, It further includes: A heating assembly is arranged on the frame and is located behind the combing assembly; Wherein, the heating component is used to heat the cut tow laid on the to-be-laid mold body.

7. The fiber placement system according to claim 6, characterized in that, It further includes: A pressure roller assembly, connected to the frame and located on one side of the tow combing assembly. The pressure roller assembly is used to press the cut tow laid on the to-be-laid mold body.

8. The fiber placement system according to claim 6, characterized in that, It further includes: A button lock, arranged on the frame. The button lock is used for detachably connecting with the corresponding cutter assembly.

9. The fiber placement system according to claim 1, wherein, Wherein, The box body is drivingly connected to the frame. The first re-feed assembly is used to convey the tow separated from the prepreg tow bobbin body to the pressing assembly. Each pressing assembly is used to receive the tow separated from the prepreg tow bobbin body conveyed by the first re-feed assembly and press the corresponding tow.

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