A material band winding machine

Abstract

The application discloses a material belt winding machine, which comprises a base, a first driving mechanism arranged on the base, a mounting plate connected with the first driving mechanism, a material unwinding assembly and a film winding assembly which are both arranged on the mounting plate, the material unwinding assembly comprises a rotatable unwinding roller, the film winding assembly comprises a rotatable pressing roller, and the pressing roller is close to a mandrel; the pressing roller can rotate with the mandrel, so that the material belt on the unwinding roller is wound to the surface of the mandrel through the pressing roller; the first driving mechanism can drive the pressing roller to rotate with the mounting plate, and the direction of the rotation axis of the first driving mechanism intersects with the direction of the rotation axis of the mandrel. In conclusion, the material belt winding machine can have more degrees of freedom, the real-time adhesion effect of the material belt and the mandrel can be ensured by adjusting the position of the pressing roller, the forming precision of the composite material product is relatively high, and thus the quality of the composite material winding product, especially the quality of the composite material winding product with a complex surface, is improved.

Description

Technical Field

[0001] This application relates to the field of additive manufacturing, and in particular to a strip winding machine. Background Technology

[0002] In related technologies, dry winding of prepreg composite materials is commonly used to form composite material winding products such as pipes, cylinders, cones, and complex curved surfaces of revolution. Specifically, through specific mechanical movements and controls, composite material tape is wound onto the surface of a mandrel according to a required linear pattern, thereby achieving the forming of the composite material winding product. However, the tape winding machines in these technologies have limited degrees of freedom, and cannot meet the forming accuracy requirements for composite material winding products with complex shapes.

[0003] In summary, how to improve the performance of material strip winding machines to further improve the precision of composite material winding products, especially the precision of composite material winding products with complex shapes, is a problem that needs to be solved. Summary of the Invention

[0004] This invention proposes a strip winding machine to solve the problem of low precision in composite material winding products in related technologies.

[0005] To address the aforementioned problems, this application discloses a strip winding machine, comprising: a base; a first drive mechanism disposed on the base; a mounting plate connected to the first drive mechanism; an unwinding assembly and a wrapping assembly both mounted on the mounting plate; the unwinding assembly including a rotatable unwinding roller; the wrapping assembly including a rotatable pressure roller, the pressure roller being close to the mandrel; the pressure roller being able to rotate with the mandrel, so that the strip on the unwinding roller is wound onto the surface of the mandrel via the pressure roller; the first drive mechanism being able to drive the pressure roller to rotate with the mounting plate, the direction of the rotation axis of the first drive mechanism intersecting the direction of the rotation axis of the mandrel.

[0006] Optionally, the wrapping assembly further includes a first bracket fixed to the mounting plate and a second bracket rotatably connected to the first bracket, with the pressure roller rotatably disposed on the second bracket; the pressure roller can rotate with the second bracket, and the directions of the rotation shaft of the first drive mechanism, the rotation shaft of the core mold, and the rotation shaft of the second bracket intersect each other.

[0007] Optionally, the wrapping assembly also includes a pressure adjustment mechanism, with the first bracket slidably connected to the mounting plate, and the pressure adjustment mechanism connected to the first bracket and the mounting plate respectively. The pressure adjustment mechanism can drive the first bracket to move so as to move the pressure roller closer to or away from the mandrel.

[0008] Optionally, the wrapping assembly also includes a pressure sensor, and the pressure adjustment mechanism is connected to the first support via the pressure sensor.

[0009] Optionally, it also includes an adjustment assembly mounted on the mounting plate, the adjustment assembly being disposed between the unwinding assembly and the wrapping assembly, the adjustment assembly including: an adjustment bracket disposed on the mounting plate; a tension application roller rotatably disposed on the adjustment bracket, the strip on the unwinding roller being able to move to the pressure roller via the tension application roller; and a first brake disposed on the adjustment bracket and connected to the tension application roller, the first brake being able to brake the tension application roller to prevent the tension application roller from rotating.

[0010] Optionally, the adjustment assembly also includes a correction mechanism, with the adjustment bracket slidably connected to the mounting plate. The correction mechanism is located on the mounting plate and connected to the adjustment bracket. The correction mechanism can drive the tension application roller to move with the adjustment bracket. The adjustment direction of the correction mechanism intersects with the direction of the rotation axis of the first drive mechanism.

[0011] Optionally, the adjustment assembly also includes a first transition roller, which is rotatably mounted on the adjustment bracket. The strip on the unwinding roller can be transported to the tension applying roller via the first transition roller, or it can be transported to the pressure roller via the tension applying roller and the first transition roller.

[0012] Optionally, the unwinding assembly further includes an unwinding bracket and a second brake. The unwinding bracket is connected to a mounting plate, and the unwinding roller is rotatably mounted on the unwinding bracket. The second brake is mounted on an adjusting bracket and connected to the unwinding roller. The second brake can brake the unwinding roller to prevent it from rotating.

[0013] Optionally, it also includes a winding assembly mounted on the mounting plate, the winding assembly including a rotatable winding roller, a film coating on the strip on the unwinding roller, which can be transported and wound onto the winding roller.

[0014] Optionally, it also includes a heater, which is located on the mounting plate and between the unwinding assembly and the wrapping assembly, so that the strip on the unwinding roll can be heated by the heater and then conveyed to the pressure roll.

[0015] The beneficial effects of this invention are as follows:

[0016] The tape winding machine disclosed in this application includes: a base; a first drive mechanism disposed on the base; a mounting plate connected to the first drive mechanism; an unwinding assembly and a wrapping assembly both mounted on the mounting plate. The unwinding assembly includes a rotatable unwinding roller, and the wrapping assembly includes a rotatable pressure roller, the pressure roller being close to the mandrel. The pressure roller can rotate with the mandrel so that the tape on the unwinding roller is wound onto the surface of the mandrel via the pressure roller. The first drive mechanism can drive the pressure roller to rotate with the mounting plate, and the direction of the rotation axis of the first drive mechanism intersects with the direction of the rotation axis of the mandrel.

[0017] Thus, during the molding process of composite material products, the pressure roller can be driven to rotate by the first driving mechanism so that the contact position between the pressure roller and the core mold is better matched, thereby enabling the material strip to be better attached and wound to the core mold. This allows for the winding molding of composite rotating parts with diameters ranging from 100mm to 2000mm and lengths of up to 10m.

[0018] In summary, the material strip winding machine of this application has more degrees of freedom and can ensure the real-time bonding effect between the material strip and the mandrel by adjusting the position of the pressure roller, thereby improving the molding accuracy of composite material products and thus improving the quality of composite material winding products, especially the quality of composite material winding products with complex shapes. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 The structural diagram of the material strip winding machine disclosed in this invention;

[0021] Figure 2 Top view of the strip winding machine disclosed in this invention

[0022] Figure 3 The present invention discloses Figure 2 DD sectional view;

[0023] Figure 4 A first angle view of the film-wrapping assembly disclosed in this invention;

[0024] Figure 5 A second angle view of the film-wrapping assembly disclosed in this invention;

[0025] Figure 6 The structural diagram of the adjustment component disclosed in this invention;

[0026] Figure 7 The structural diagram of the heater disclosed in this invention;

[0027] Figure 8 The present invention discloses a structural diagram of a winding assembly and an unwinding assembly.

[0028] Figure label:

[0029] A - First axis, B - Second axis, C - Third axis, X - Length direction, Y - Width direction

[0030] 1-Core mold, 2-Strip material, 3-Film coating,

[0031] 11-Base, 12-First drive mechanism, 13-Mounting plate

[0032] 20-Unwinding assembly,

[0033] 21-Unwinding roll, 22-Unwinding bracket, 23-Second brake

[0034] 30-Wrapping Assembly

[0035] 31-Pressure roller, 32-First bracket, 33-Second bracket, 331-Mounting ring, 332-Suspension, 34-Second drive mechanism, 35-Pressure adjustment mechanism, 36-First slider, 37-First slide rail, 38-Pressure sensor, 381-Avoidance notch, 39-Connecting rod

[0036] 40-Adjustment components,

[0037] 41-Adjusting bracket, 42-Tension applying roller, 43-First brake, 44-Correction mechanism, 45-Correction sensor, 46-Adjustable bracket, 47-First transition roller, 48-Tension measuring roller, 481-Tension measuring device, 491-Second slider, 492-Second slide rail

[0038] 50-Rewinding assembly,

[0039] 51-Take-up roll, 52-Clutch, 53-Third drive mechanism

[0040] 61-Heater,

[0041] 611-Heating plate, 612-Heating tube, 613-Heat insulation shell, 614-Heating plate bracket, 615-Handle, 616-Temperature sensor

[0042] 62-Heating roller, 63-Hot air gun, 64-Vortex tube, 65-Second transition roller

[0043] 70-Laser instrument. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] In related technologies, dry winding of prepreg composite materials is commonly used to form composite material winding products such as pipes, cylinders, cones, and complex curved surfaces of rotation. However, the degrees of freedom of the strip winding machine are limited, and it cannot meet the forming quality requirements for composite material winding products with complex shapes. To solve this problem, the technical solution of this application was developed. The following is a combination of... Figures 1 to 8 To elaborate.

[0046] Please refer to Figures 1-3 This application discloses a tape winding machine, including a base 11, a first drive mechanism 12, a mounting plate 13, an unwinding assembly 20, and a wrapping assembly 30. The base 11 serves as the mounting foundation for the tape winding machine. The first drive mechanism 12 can be mounted on the base 11, and the mounting plate 13 is connected to the first drive mechanism 12. For example, the base 11, the first drive mechanism 12, and the mounting plate 13 can be arranged sequentially along the direction of the second axis B.

[0047] Both the unwinding assembly 20 and the wrapping assembly 30 can be mounted on the mounting plate 13, and are arranged sequentially along the conveying path of the strip 2. The unwinding assembly 20 may include a rotatable unwinding roller 21, which stores the strip 2. Specifically, the strip 2 can be wound to form a tray fitted onto the unwinding roller 21. The unwinding roller 21 may be an air shaft, and multiple retractable protrusions are provided on its circumferential surface. These protrusions can extend to abut against the strip 2 in the radial direction of the unwinding roller 21, thereby fixing the tray formed by the winding of the strip 2. When the strip 2 is conveyed, the tray and the unwinding roller 21 rotate synchronously to unwind the strip 2 onto the pressure roller 31 (described later). The wrapping assembly 30 may include a rotatable pressure roller 31, which is close to the mandrel 1. The strip 2 unwound onto the pressure roller 31 can abut against the mandrel 1.

[0048] The mandrel 1 is usually clamped on a CNC machine, such as by a robotic arm, a gripper, or a mandrel. During operation, the CNC program is started to drive the mandrel 1 to rotate around the first axis A. The pressure roller 31 rolls and contacts the mandrel 1 through the material strip 2. Thus, the pressure roller 31 can rotate with the mandrel 1 around the first axis A, so that the material strip 2 on the unwinding roller 21 can be wound onto the surface of the mandrel 1 through the pressure roller 31, thereby completing the winding and forming of the composite material product on the mandrel 1.

[0049] The first drive mechanism 12 can drive the pressure roller 31 to rotate around the second axis B along with the mounting plate 13. The first drive mechanism 12 can adopt a combination structure of a motor and a reducer. Specifically, the motor, reducer, and mounting plate 13 are connected in sequence so that the motor transmits a large torque to the mounting plate 13 through the reducer, thereby effectively realizing the overall rotation of the mounting plate 13 and the components set on the mounting plate 13. The direction of the rotation axis of the first drive mechanism 12 intersects with the direction of the rotation axis of the core mold 1, for example, they are perpendicular to each other, that is, the rotation axis of the core mold 1 is the first axis A, and the rotation axis of the first drive mechanism 12 is the second axis B.

[0050] Thus, during the molding process of composite material products, the pressure roller 31 can be driven to rotate by the first driving mechanism 12 so that the contact position of the pressure roller 31 and the core mold 1 can be better matched, thereby enabling the material strip 2 to be better attached and wound to the core mold 1, and composite material rotating parts with diameters of 100mm to 2000mm and lengths of 10m can be wound and molded.

[0051] In summary, the material strip winding machine of this application has more degrees of freedom and can ensure the real-time bonding effect between the material strip 2 and the core mold 1 by adjusting the position of the pressure roller 31, thereby making the molding accuracy of composite material products higher and improving the quality of composite material winding products, especially the quality of composite material winding products with complex shapes.

[0052] Optionally, the pressure roller 31 can be made of rubber to avoid hard contact between the pressure roller 31 and the mandrel 1, which could cause crushing damage.

[0053] Optionally, such as Figure 1 , Figure 4 and Figure 5 As shown, the wrapping assembly 30 also includes a first bracket 32 ​​fixed to the mounting plate 13 and a second bracket 33 rotatably connected to the first bracket 32. The pressure roller 31 is rotatably mounted on the second bracket 33. The pressure roller 31 can rotate with the second bracket 33. The rotation direction of the first drive mechanism 12, the rotation direction of the core mold 1, and the rotation direction of the second bracket 33 intersect each other, for example, they are perpendicular to each other. That is, the rotation direction of the second bracket 33 can be the third axis C. In this way, during the molding process of composite material products, the pressure roller 31 can be driven to rotate by the second bracket 33. For example, the pressure roller 31 can rotate around the third axis C by a deflection angle of ±30°. Thus, the pressure roller 31 can rotate both around the second axis B and around the third axis C, so that the material wrapping machine of this application can improve the matching degree between the pressure roller 31 and the core mold 1 through multi-axis motion, and make the winding molding accuracy of complex rotating parts of composite materials higher.

[0054] Optionally, the wrapping assembly 30 may further include a second drive mechanism 34, which is disposed on the first bracket 32 ​​and connected to the second bracket 33. The second drive mechanism 34 may be a motor to drive the second bracket 33 to rotate relative to the first bracket 32 ​​about a third axis C.

[0055] The second support 33 may include a mounting ring 331 and a suspension 332, which can be connected to each other by tie bolts, welding, etc. The pressure roller 31 and the heating roller 62 (described later) are arranged side-by-side and are both rotatably mounted on the suspension 332. The mounting ring 331 is rotatably mounted on the first support 32. The second drive mechanism 34 is connected to the mounting ring 331 and can drive the mounting ring 331 to rotate around the third axis C, thereby driving the pressure roller 31 to rotate around the third axis C. The first support 32 may have a feed hole corresponding to the mounting ring 331, so that the strip 2 can pass through the feed hole and the mounting ring 331 in sequence, facilitating the feed of the strip 2 within the wrapping assembly 30 without occupying external space. The heating roller 62 may be located on the side of the pressure roller 31 away from the core mold 1. The strip 2 can pass through the heating roller 62 and the pressure roller 31 in sequence and be wound onto the core mold 1.

[0056] Optionally, the wrapping assembly 30 may further include a pressure adjustment mechanism 35. The first support 32 is slidably connected to the mounting plate 13. The pressure adjustment mechanism 35 is connected to both the first support 32 and the mounting plate 13. The pressure adjustment mechanism 35 can be any driving mechanism such as a cylinder mechanism, an electric actuator mechanism, a gear and rack mechanism, or a belt drive mechanism, to drive the first support 32 to move along the length direction X of the mounting plate 13, and to move the pressure roller 31 closer to or further away from the mandrel 1, thereby adjusting the degree of compression between the mandrel 1 and the pressure roller 31. In actual production, the pressure between the mandrel 1 and the pressure roller 31 is usually stabilized within the range of 0-1200N. This not only ensures sufficient extrusion pressure between the mandrel 1 and the pressure roller 31, thus ensuring the winding and forming effect of the composite material product, but also prevents damage caused by excessive compression between the mandrel 1 and the pressure roller 31.

[0057] Optionally, for the method of sliding connection of the first bracket 32 ​​to the mounting plate 13, the film wrapping assembly 30 may also include a first slider 36 and a first slide rail 37. The first slider 36 is provided on one of the first bracket 32 ​​and the mounting plate 13, and the first slide rail 37 is provided on the other. The first slider 36 and the first slide rail 37 are slidably connected along the length direction X, thereby realizing the sliding of the film wrapping assembly 30 on the mounting plate 13.

[0058] Optionally, the wrapping assembly 30 may also include a pressure sensor 38. The pressure adjustment mechanism 35 is connected to the first bracket 32 ​​through the pressure sensor 38. The pressure sensor 38 can detect the magnitude of the driving force of the second drive mechanism 34, thereby enabling control of the extrusion pressure between the pressure roller 31 and the mandrel 1, and further preventing excessive extrusion damage between the mandrel 1 and the pressure roller 31.

[0059] Optionally, to prevent the pressure sensor 38 from being crushed and damaged when the pressure adjustment mechanism 35 transmits driving force to the pressure roller 31, the wrapping assembly 30 may also include a connecting rod 39. The pressure sensor 38 has two clearance notches 381, and is divided into a main body portion located between the two clearance notches 381, and an elastic portion located on the side of the clearance notches 381 away from the main body portion, thus giving the pressure sensor 38 an "S"-shaped structure. One of the elastic portions of the two pressure sensors 38 is connected to the pressure adjustment mechanism 35 via the connecting rod 39, and the other is connected to the first bracket 32 ​​via the connecting rod 39. In this way, when the pressure sensor 38 is compressed, the elastic deformation of the elastic portion can relieve the force, preventing it from being crushed and damaged.

[0060] Optionally, such as Figure 1 , Figure 3 and Figure 6 As shown, the tape winding machine may also include an adjustment assembly 40 mounted on the mounting plate 13. The adjustment assembly 40 is located between the unwinding assembly 20 and the wrapping assembly 30. The adjustment assembly 40 may include an adjustment bracket 41, a tension applying roller 42, and a first brake 43.

[0061] An adjusting bracket 41 is mounted on the mounting plate 13, and a tension applying roller 42 is rotatably mounted on the adjusting bracket 41. The strip 2 on the unwinding roller 21 can move to the pressure roller 31 via the tension applying roller 42. A first brake 43 is mounted on the adjusting bracket 41 and connected to the tension applying roller 42.

[0062] During normal transport, the material belt 2 and the tension applying roller 42 are in rolling contact, and the material belt 2 transports normally. However, when the material belt 2 between the tension applying roller 42 and the pressure roller 31 becomes loose, the first brake 43 can brake the tension applying roller 42 to prevent it from rotating. The tension applying roller 42 gradually applies resistance torque to the material belt 2, thereby stopping the transport of the material belt 2 between the tension applying roller 42 and the unwinding roller 21, while the loose portion of the material belt 2 between the tension applying roller 42 and the pressure roller 31 is tensioned. After the loosening or other abnormalities are eliminated, the first brake 43 releases the brake on the tension applying roller 42, and the tension applying roller 42 continues to rotate, and the material belt 2 continues to transport.

[0063] Optionally, the first part of the tension applying roller 42 is located on one side of the adjusting bracket 41 for contacting the material belt 2, and the second part of the tension applying roller 42 and the first brake 43 are both located on the other side of the adjusting bracket 41. The first brake 43 can be a magnetic powder brake to brake the tension applying roller 42 so that the tension applying roller 42 can adjust the tension of the material belt 2.

[0064] Optionally, the surface of the tension applying roller 42 may be covered with rubber or the like, and may be knurled to increase the resistance torque between the material belt 2 and the tension applying roller 42 during tension adjustment, so as to make the tension adjustment more reliable.

[0065] Optionally, the adjustment assembly 40 may further include a correction mechanism 44, which may be a cylinder mechanism, belt drive mechanism, etc. The adjustment bracket 41 is slidably connected to the mounting plate 13, and the correction mechanism 44 is disposed on the mounting plate 13 and connected to the adjustment bracket 41. The adjustment direction of the correction mechanism 44 intersects with the direction of the rotation axis of the first drive mechanism 12, for example, the adjustment direction of the correction mechanism 44 is along the width direction Y of the mounting plate 13. Thus, when the transmission trajectory of the material belt 2 deviates from the predetermined trajectory, the correction mechanism 44 can drive the tension application roller 42 to move along the width direction Y with the adjustment bracket 41, thereby correcting the material belt 2 and returning it to the predetermined trajectory, thus ensuring the normal transportation of the material belt 2 and preventing abnormalities such as jamming.

[0066] Optionally, regarding the specific method of adjusting the bracket 41 to slide and connect the mounting plate 13, the adjusting component 40 can be configured to include a second slider 491 and a second slide rail 492. One of the second slider 491 and the second slide rail 492 is disposed on the adjusting bracket 41, and the other is disposed on the mounting plate 13. For example, a support block is disposed on the mounting plate 13, the second slider 491 is disposed on the support block, and the second slide rail 492 is disposed on the adjusting bracket 41. The second slide rail 492 and the second slider 491 are slidably connected along the width direction Y, thereby realizing the sliding of the adjusting component 40 along the width direction Y.

[0067] Optionally, the adjustment assembly 40 may further include a web-correction sensor 45 and an adjustable bracket 46. The adjustable bracket 46 is connected to the mounting plate 13. The web-correction sensor 45 is located on the adjustable bracket 46 and between the tension application roller 42 and the pressure roller 31. It is used to detect whether the material strip 2 deviates along the width direction Y of the mounting plate 13. Specifically, the web-correction sensor 45 can be configured as a "C" shape so that the material strip 2 passes through the "C" shaped notch of the web-correction sensor 45. The web-correction sensor 45 can be a photoelectric sensor, and the center of the web-correction sensor 45 is aligned with the edge of the material strip 2. If the material strip 2 deviates, the web-correction sensor 45 generates a web-correction signal and transmits it to the controller. The controller controls the web-correction mechanism 44 to drive the adjustment bracket 41 to move until the edge of the material strip 2 is aligned with the center of the web-correction sensor 45, thereby realizing closed-loop control of the position correction of the material strip 2 and improving the intelligence level of the device of this application.

[0068] Optionally, since the edge positions of different specifications of strip 2 are different, an adjustable bracket 46 is provided to adjust the position of the correction sensor 45. Specifically, the adjustable bracket 46 may include a fixed frame 461 connected to the mounting plate 13, and a sliding plate 462 slidably connected to the fixed frame 461 along the width direction Y. The sliding plate is also connected to the correction sensor 45. In this way, the correction sensor 45 can be slid by the sliding plate 462 to adjust the position of the correction sensor 45 along the width direction Y, thereby adapting to different specifications of strip 2. According to actual production experience, the strip winding machine of this application can be adapted to winding strip 2 with a width of 20mm-120mm.

[0069] Optionally, the adjustment assembly 40 may also include a first transition roller 47, which is rotatably mounted on the adjustment bracket 41. In this application, the first transition roller 47 is disposed between the unwinding roller 21 and the tension applying roller 42, so that the material strip 2 on the unwinding roller 21 can be transported to the tension applying roller 42 via the first transition roller 47. Of course, the first transition roller 47 may also be disposed between the tension applying roller 42 and the pressure roller 31, so that it can be transported to the pressure roller 31 via the tension applying roller 42 and the first transition roller 47.

[0070] In this application, the first transition roller 47 and the tension applying roller 42 respectively contact the two opposite surfaces of the material belt 2. By setting the first transition roller 47, the contact area between the material belt 2 and the tension applying roller 42 can be increased. Thus, when the tension applying roller 42 is braked to stop rotating, the sliding friction between the material belt 2 and the tension applying roller 42 is greater, and the resistance torque applied to the material belt 2 is greater, so that the tension applying roller 42 can better perform its tensioning function on the material belt 2.

[0071] The adjustment assembly 40 may also include a tension measuring roller 48, which is rotatably mounted on the adjustment bracket 41. The strip 2 on the unwinding roller 21 can be transported to the pressure roller 31 in sequence via the first transition roller 47, the tension applying roller 42, and the tension measuring roller 48. The tension measuring roller 48 and the tension applying roller 42 respectively contact the two opposite surfaces of the strip 2 to increase the contact area between the strip 2 and the tension applying roller 42, thereby improving the tensioning effect on the strip 2.

[0072] Tension measuring devices 481 are installed at both ends of the tension measuring roller 48. The tension measuring devices 481 can be through-shaft pressure sensors fitted onto both ends of the tension measuring roller 48. The material strip 2 can be transported through the main body of the tension measuring roller 48 located between the two tension measuring devices 481. The tension measuring devices 481 are used to detect the pressure applied by the material strip 2 to the tension measuring roller 48, and then convert it into tension. For example, the angle between the material strip 2 and the two sides of the tension measuring roller 48 can be determined to be 60°, thus obtaining... Wherein, F1 is the tension value of the material belt 2, and F2 is the measured value of the tension measuring device 481. This can control the tension of the material belt 2, preventing the material belt 2 from becoming too loose due to insufficient tension, and preventing the material belt 2 from breaking due to excessive tension.

[0073] Optionally, such as Figure 1 and Figure 8 As shown, the unwinding assembly 20 may further include an unwinding bracket 22 and a second brake 23. The unwinding bracket 22 is connected to the mounting plate 13, and the unwinding roller 21 is rotatably mounted on the unwinding bracket 22. The second brake 23 is mounted on the adjusting bracket 41 and connected to the unwinding roller 21. The second brake 23 can brake the unwinding roller 21 to prevent it from rotating. Specifically, the first part of the unwinding roller 21 is located on one side of the unwinding bracket 22 to store the strip 2, and the second part of the unwinding roller 21 and the second brake 23 are both located on the other side of the unwinding bracket 22. The second brake 23 is a magnetic powder brake to brake the unwinding roller 21, so that the unwinding roller 21 gradually applies resistance torque to the strip 2. In this way, the unwinding roller 21 and the tension applying roller 42 can cooperate with each other to better achieve tensioning of the strip 2.

[0074] Optionally, a protective film 3 is applied to the strip 2. Before winding the mandrel 1, the protective film 3 on the strip 2 needs to be removed. For this purpose, as follows... Figure 1 and Figure 8 As shown, the tape winding machine may also include a winding assembly 50 mounted on the mounting plate 13. The winding assembly 50 may include a rotatable winding roller 51, and the film 3 of the tape 2 on the unwinding roller 21 may be transported and wound onto the winding roller 51.

[0075] Optionally, the take-up roller 51 can be an air shaft with multiple retractable protrusions on its surface. During operation, the protrusions can extend to abut against the film 3 wound onto the take-up roller 51 to fix the tray formed by the film 3. When the take-up roller 51 rotates, it can drive the tray formed by the film 3 to rotate synchronously, thereby making it easier to remove the film 3 from the strip 2 and to wind and collect the film 3.

[0076] Optionally, the winding assembly 50 may also include a clutch 52 and a third drive mechanism 53. The winding roller 51 is rotatably mounted on the unwinding bracket 22. The winding roller 51, the clutch 52 and the third drive mechanism 53 are connected in sequence. The third drive mechanism 53 can drive the winding roller 51 to rotate through the clutch 52 to wind the film 3.

[0077] Clutch 52 can be a magnetic powder clutch with a disengagement torque of 6 N·m, and the third drive mechanism 53 can be a motor. When the take-up roller 51 rotates and the mandrel 1 rotates to drive the unwind roller 21, the film 3 is in a tension-free state, and the take-up roller 51 can apply a maximum torque of 6 N·m to wind and collect the film 3. When the mandrel 1 stops rotating, or the unwind roller 21 stops rotating, the braking torque of the unwind roller 21 will be greater than 6 N·m, and the driving force of the take-up roller 51 will be insufficient to drive the film 3 to rotate. The clutch 52 will automatically disengage from the rear third drive mechanism 53, and the third drive mechanism 53 will idle.

[0078] When the unwinding roller 21 or the core mold 1 is restarted, the winding roller 51 resumes the winding of the film 3. This allows the winding roller 51 to wind normally while providing disconnection protection, preventing the film 3 from being pulled apart due to excessive torque generated by the winding roller 51.

[0079] Optionally, such as Figure 1 , Figure 3 and Figure 7 As shown, the material strip winding machine may also include a heater 61, which is located on the mounting plate 13 and between the unwinding assembly 20 and the wrapping assembly 30. The material strip 2 on the unwinding roller 21 can be heated by the heater 61 and then transported to the pressure roller 31, which makes it easier to wind and form composite material products.

[0080] Optionally, the heater 61 may include a pair of heating plates 611, heating tubes 612, a heat insulation shell 613, and a heating plate support 614. A gap of approximately 3mm is left between the pairs of heating plates 611 for the feed belt 2 to pass through. Heating tubes 612 are installed in the heating plates 611 to heat them. The surface of the heating plates 611 is covered with a heat insulation shell 613 made of fiberglass to achieve good heat insulation. The pairs of heating plates 611 can be hinged together for easy opening and closing. A heating plate support 614 is provided between the heating plate 611 closest to the mounting plate 13 and the mounting plate 13 to adjust the height of the heater 61 for easy feeding of the feed belt 2. The other heating plate has a handle 615, which allows the two heating plates 611 to be moved apart for easy feeding of the feed belt 2. A temperature sensor 616 is also provided in the heating plate 611 to detect the heating temperature and thus control it.

[0081] Optionally, the strip winding machine may also include a heating roller 62, a hot air gun 63, and a vortex tube 64. The heating roller 62 is located between the unwinding roller 21 and the pressure roller 31, and is rotatably mounted on the second support 33. The strip 2 on the unwinding roller 21 can be heated by the heating roller 62 and then fed to the pressure roller 31. The outlet of the hot air gun 63 is located close to the pressure roller 31 to heat the strip 2 on the pressure roller 31. In this way, the heating roller 62, the hot air gun 63, and the heater 61 cooperate to achieve multi-position heating of the strip 2, so as to improve the heating effect of the strip 2 and further improve the winding quality of the composite material winding product. The outlet of the vortex tube 64 is aligned with the mandrel 1 to cool the strip 2 wound on the mandrel 1, which facilitates the unloading of the composite material product after winding.

[0082] Optionally, a second transition roller 65 may be provided between the heater 61 and the heating roller 62 to further adjust the tension of the strip 2.

[0083] Optionally, the strip winding machine may also include a laser instrument 70, which is mounted on the mounting plate 13 and used to detect the overall trajectory of the strip 2 to ensure that the edges of the overall trajectory of the strip 2 are on the same plane.

[0084] The device described in this application can be manufactured in the following manner:

[0085] Step S100: Place the material tray formed by the winding of the material strip 2 on the unwinding roller 21, and inflate the unwinding roller 21 to fix the material tray formed by the material strip 2.

[0086] Step S200: Tear off the film 3 of the material strip 2 and fix it on the take-up roller 51.

[0087] Step S300: The strip 2 with the film 3 torn off is passed sequentially through the first transition roller 47, the tension application roller 42, the tension measuring roller 48, the correction sensor 45, the heater 61, the second transition roller 65, the heating roller 62 and the pressure roller 31, and then fixed on the core mold 1.

[0088] Step S400: Use laser instrument 70 to adjust the material strip 2 so that the edges of the material strip 2 are on the same plane.

[0089] Step S500: Control pressure adjustment mechanism 35 drives pressure roller 31 to approach core mold 1 to press the material strip 2 between pressure roller 31 and core mold 1. Pressure sensor 38 adjusts the extrusion pressure between pressure roller 31 and core mold 1 in real time.

[0090] Step S600: Adjust the position of the correction sensor 45 by adjusting the bracket 41 to ensure that the center of the correction sensor 45 corresponds to the edge of the material belt 2.

[0091] Step S700: Set the temperatures of heater 61, heating roller 62 and hot air gun 63 to preheat the strip 2, and at the same time turn on the vortex tube 64 to cool the strip 2 wound onto the core mold 1.

[0092] Step S800: Start the CNC program so that the CNC equipment drives the core mold 1 to rotate around the first axis A. The first brake 43 brakes the tension application roller 42, and the second brake 23 brakes the unwinding roller 21 so that the tension application roller 42 and the unwinding roller 21 gradually apply resistance torque to the material strip 2 so as to tension the material strip 2.

[0093] Step S900: After the tension measuring device 481 detects that the tension of the strip 2 has reached the preset tension value, the first brake 43 releases the tension applying roller 42, and the second brake 23 releases the unwinding roller 21. The strip 2 is transported normally and wound onto the mandrel 1 to form a composite material wound product on the mandrel 1. When the strip 2 becomes loose and the tension decreases, the first brake 43 brakes the tension applying roller 42, and the second brake 23 brakes the unwinding roller 21 to increase the tension of the strip 2 again.

[0094] Step S1000: Complete the winding along the first axis A from one end to the other on the core mold 1, cut the strip 2 and re-fix it on the core mold 1.

[0095] Step S1100: Repeat the above steps until the core mold 1 reaches the predetermined thickness.

[0096] During the operation of the above steps, according to the changes in the shape of the mandrel 1, the first drive mechanism 12 can drive the pressure roller 31 to rotate around the second axis B, and the second drive mechanism 34 can drive the pressure roller 31 to rotate around the third axis C, so as to ensure that the pressure roller 31 and the mandrel 1 are adapted in real time, thereby ensuring the winding and forming of complex shapes of composite material products. At the same time, the pressure adjustment mechanism 35 can drive the pressure roller 31 to move along the length direction X, so as to adjust the extrusion pressure between the pressure roller 31 and the mandrel 1. When the correction sensor 45 detects the deviation of the strip 2, the correction mechanism 44 adjusts the displacement of the adjustment component 40 along the width direction Y, so as to correct the deviation of the strip 2 in a timely manner. Thus, in the material strip winding machine of this application, the rotation of each roller around the first axis A realizes the transportation of the material strip 2, the rotation of the pressure roller 31 around the second axis B and the third axis C respectively is used for angle adjustment, the movement of the pressure roller 31 along the length direction X is used to adjust the extrusion pressure with the core mold 1, and the movement of the adjustment component 40 along the width direction Y is used to correct the deviation of the material strip 2. The five-axis linkage of the material strip winding machine of this application comprehensively ensures the winding and forming accuracy of the composite product.

[0097] While the strip 2 is winding around the core mold 1, the third drive mechanism 53 drives the take-up roller 51 to rotate, so as to wind and collect the film 3. When the unwind roller 21 stops rotating, the clutch 52 disconnects the third drive mechanism 53 from the take-up roller 51, and the third drive mechanism 53 idles to achieve disconnection protection. When the unwind roller 21 continues to rotate, the clutch 52 makes the third drive mechanism 53 continue to connect with the take-up roller 51, and the take-up roller 51 continues to wind and collect the film 3.

[0098] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A strip winding machine, characterized in that, include: A base (11); a first drive mechanism (12) disposed on the base (11); a mounting plate (13) connected to the first drive mechanism (12); an unwinding assembly (20) and a wrapping assembly (30) both mounted on the mounting plate (13), the unwinding assembly (20) including a rotatable unwinding roller (21), the wrapping assembly (30) including a first support (32), a second support (33) rotatably connected to the first support (32), a second drive mechanism (34) disposed on the first support (32) and connected to the second support (33), and a pressure roller (31) rotatably disposed on the second support (33). The pressure roller (31) is close to the mandrel (1); the tape winding machine also includes a heating roller (62), the second bracket (33) includes a mounting ring (331) and a suspension (332), the mounting ring (331) is rotatably mounted on the first bracket (32), the second drive mechanism (34) connects to the mounting ring (331) and drives the mounting ring (331) to rotate around the third axis (C), the heating roller (62) and the pressure roller (31) are arranged side by side and are both rotatably mounted on the suspension (332); the film winding assembly (30) also includes a pressure adjustment mechanism (35) and a pressure sensor (38), the first bracket (32) slides The mounting plate (13) is dynamically connected to the first bracket (32) and the mounting plate (13), and the pressure adjustment mechanism (35) is connected to the first bracket (32) through the pressure sensor (38) to drive the pressure roller (31) to approach or move away from the core mold (1). One of the first bracket (32) and the mounting plate (13) is provided with a first slider (36), and the other is provided with a first slide rail (37). The first slider (36) and the first slide rail (37) are slidably connected along the length direction (X). The pressure sensor (38) is provided with two clearance notches (381) and has an S-shaped structure. The adjustment mechanism (35) and the first bracket (32) are connected to the pressure sensor (38) via a connecting rod (39); the pressure roller (31) can rotate with the core mold (1) so that the strip (2) on the unwinding roller (21) is wound onto the surface of the core mold (1) via the pressure roller (31); the first drive mechanism (12) can drive the pressure roller (31) to rotate with the mounting plate (13), and the pressure roller (31) can rotate with the second bracket (33). The rotation axis of the first drive mechanism (12), the rotation axis of the core mold (1), and the rotation axis of the second bracket (33) intersect each other.It also includes an adjustment assembly (40) mounted on the mounting plate (13), the adjustment assembly (40) being disposed between the unwinding assembly (20) and the wrapping assembly (30), the adjustment assembly (40) including an adjustment bracket (41), a first transition roller (47) rotatably disposed on the adjustment bracket (41), a tension applying roller (42) and a tension measuring roller (48), a first brake (43) disposed on the adjustment bracket (41) and connected to the tension applying roller (42), and tension measuring instruments (48) disposed at both ends of the tension measuring roller (48). 81) and a correction mechanism (44) disposed on the mounting plate (13) and connected to the adjusting bracket (41), the adjusting bracket (41) being slidably connected to the mounting plate (13), the correction mechanism (44) being able to drive the tension applying roller (42) to move with the adjusting bracket (41), the adjustment direction of the correction mechanism (44) being along the width direction (Y) of the mounting plate (13); the first brake (43) being able to brake the tension applying roller (42) to prevent the tension applying roller (42) from rotating, the first transition roller (47) and the tension applying roller (42) respectively contact the two opposite surfaces of the material strip (2), and the tension measuring roller (48) and the tension applying roller (42) respectively contact the two opposite surfaces of the material strip (2); it also includes a heater (61) and an adjustable bracket (46) mounted on the mounting plate (13), a second transition roller (65) is provided between the heater (61) and the heating roller (62), and the adjustable bracket (46) includes a fixed frame (461) connected to the mounting plate (13) and a fixed frame (461) slidably connected along the width direction (Y) to the fixed frame (461). A sliding plate (462) of a fixed frame (461) is connected to a correction sensor (45), which is located between the tension applying roller (42) and the pressure roller (31). The strip (2) on the unwinding roller (21) passes sequentially through the first transition roller (47), the tension applying roller (42), the tension measuring roller (48), the heater (61), the second transition roller (65), the heating roller (62), and the pressure roller (31) before winding onto the surface of the mandrel (1).

2. The material strip winding machine according to claim 1, characterized in that, It also includes a take-up assembly (50) mounted on the mounting plate (13), the take-up assembly (50) including a rotatable take-up roller (51), a clutch (52) and a third drive mechanism (53), the take-up roller (51), the clutch (52) and the third drive mechanism (53) being connected in sequence to cause the film (3) of the strip (2) on the unwinding roller (21) to be wound onto the take-up roller (51).

3. The strip winding machine according to claim 2, characterized in that, When the unwinding roller (21) or the mandrel (1) stops rotating, the clutch (52) disconnects the third drive mechanism (53) from the winding roller (51) so that the third drive mechanism (53) idles.

4. The strip winding machine according to claim 1, characterized in that, The heater (61) includes a pair of heating plates (611), a heating tube (612) disposed in the heating plate (611), and a temperature sensor (616) disposed in the heating plate (611); the strip winding machine also includes a hot air gun (63) and a vortex tube (64), the air outlet of the hot air gun (63) is close to the pressure roller (31), and the air outlet of the vortex tube (64) is aligned with the mandrel (1).

5. The material strip winding machine according to claim 1, characterized in that, It also includes a laser (70) mounted on the mounting plate (13), the laser (70) being used to detect the overall trajectory of the material strip (2).

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