Multi-roll thermosetting preimpregnation non-stop material changing device and method

Abstract

The invention belongs to the technical field of thermosetting prepreg production, and discloses a multi-roll thermosetting prepreg non-stop material changing device and method.The multi-roll thermosetting prepreg non-stop material changing device comprises a base fixed to the ground, a fixing frame is fixedly installed on the base, a rotating frame is rotationally connected to the fixing frame, and two production stations are symmetrically arranged on the rotating frame; the movable frame and the fixed frame are correspondingly arranged and are connected to the base in a sliding manner through a driving assembly; a material changing station corresponding to the production station is arranged on the movable frame, during feeding, the vacant production station coincides with the material changing station, and a positioning assembly is arranged on the material changing station; the positioning frame is arranged on the material changing station, and a cutting assembly is arranged on the positioning frame. The device is simple and compact in structure, convenient to use, high in automation degree and convenient to overhaul and maintain, prepreg replacement can be conveniently achieved on the premise that shutdown is not needed, seamless butt joint of prepreg is achieved, continuity of a production line and product quality are guaranteed, and the device is suitable for application and popularization.

Description

Technical Field

[0001] The present invention relates to the technical field of thermosetting prepreg production, and particularly to a multi-roll thermosetting prepreg non-stop material changing device and method. Background Art

[0002] In the production process of thermosetting prepregs, in order to ensure the continuity and high efficiency of production, it is usually necessary to achieve non-stop material change. In the traditional method, when a roll of prepreg is about to be used up, the production line needs to stop, and workers manually replace the new prepreg roll. This process is not only time-consuming and laborious, but also reduces production efficiency.

[0003] In recent years, some devices have achieved automatic cutting before the material is used up, automatic feeding and docking of new materials through complex mechanical structures and control systems, thus avoiding the shutdown of the production line; however, these devices have complex structures, high costs, and are not fully applicable to materials with specific physical and chemical properties such as thermosetting prepregs; especially for the continuous production of multi-roll thermosetting prepregs, there are still certain deficiencies in the existing automatic material changing devices. How to ensure the smooth and rapid material change process while avoiding damage to the prepreg during the material change; how to achieve seamless docking of the prepregs without stopping the machine to ensure the continuity of the production line and product quality; and how to reduce the complexity and cost of the automatic material changing device to adapt to production lines of different scales and production requirements are all problems that need to be solved by the current automatic material changing devices.

[0004] Therefore, the present invention designs a multi-roll thermosetting prepreg non-stop material changing device and method to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-roll thermosetting prepreg non-stop material changing device and method to solve the problems existing in the prior art.

[0006] To achieve the above purpose, the present invention provides the following solution: The present invention provides a multi-roll thermosetting prepreg non-stop material changing device, including:

[0007] A base, which fixes the material changing device on the ground;

[0008] A fixed frame, which is fixedly installed on the base, a rotating frame is rotatably connected to the fixed frame, and two production stations are symmetrically arranged on the rotating frame;

[0009] A movable frame, which is correspondingly arranged with the fixed frame and is slidably connected to the base through a driving component; a material changing station corresponding to the production station is arranged on the movable frame. During feeding, the vacant production station coincides with the material changing station, and a positioning component is arranged on the material changing station;

[0010] A positioning frame is provided at the material changing station, and a cutting assembly is arranged on the positioning frame.

[0011] Preferably, the material changing station includes symmetrically arranged support frames, the support frames are open towards the fixed frame side and are correspondingly arranged with the production station; a locking assembly for loosening and releasing the material roll is arranged between the two support frames, and the positioning frame is movably arranged on the two support frames.

[0012] Preferably, the locking assembly includes a locking ring rotatably connected to the support frame, a locking gear ring is fixedly attached to the locking ring, and the locking gear ring is in transmission connection with a locking motor arranged on the support frame; the positioning assembly is fixedly connected between the two locking gear rings.

[0013] Preferably, the positioning assembly includes a positioning plate fixedly connected to the locking gear ring, a positioning telescopic rod is fixedly installed on the positioning plate, a positioning roller is rotatably connected between the output ends of the two positioning telescopic rods, and the positioning roller translates along the radial direction of the locking gear ring.

[0014] Preferably, the cutting assembly includes a cutting pressure plate fixedly connected between the two positioning frames, the cutting pressure plate is correspondingly arranged with a cutting support plate arranged on the rotating frame, and when cutting the prepreg, it is clamped between the cutting pressure plate and the cutting support plate and is cut by a cutting module.

[0015] Preferably, the cutting module includes a cutting drive rod fixedly connected between the two positioning frames, a cutting slider is slidably connected to the cutting drive rod, a cutting knife is installed on the cutting slider, and the blade of the cutting knife passes through the cutting pressure plate and cuts the prepreg.

[0016] Preferably, the driving assembly includes a driving rack fixedly installed on the base, the driving rack is arranged along the translation direction of the movable frame; a driving motor is fixedly installed on the movable frame, and the output end of the driving motor is in transmission connection with a driving gear meshing with the driving rack.

[0017] Preferably, the middle part of the positioning frame is rotatably connected to the support frame, the lower end of the positioning frame is hinged with an adjusting telescopic rod, and the fixed end of the adjusting telescopic rod is rotatably connected to the support frame.

[0018] Preferably, a plurality of guiding rollers are arranged on the support frame, the plurality of guiding rollers are arranged in a ring shape, and the outer ring of the locking ring is in rolling contact with the guiding rollers.

[0019] The present invention also discloses a material changing method for a multi-roll thermosetting prepreg non-stop material changing device, including the following steps:

[0020] Detect the refueling time and rotate the production station that needs refueling to one side of the movable frame;

[0021] Push the movable frame to translate towards the fixed frame through the driving component, so that the refueling station corresponds and coincides with the production station that needs refueling;

[0022] The cutting component on the positioning frame is activated to clamp and cut the prepreg;

[0023] The positioning component positions and extrudes the end of the movable prepreg onto the material roll that needs refueling and realizes the preliminary winding of the material roll through the refueling station;

[0024] The driving component pushes the movable frame to reset, separates the refueling station from the production station, and realizes refueling without stopping the machine.

[0025] Compared with the prior art, the present invention has the following advantages and technical effects: The present invention discloses a multi-roll thermosetting prepreg non-stop reel-changing device and method. The device includes a base, a fixed frame, a movable frame, a positioning frame and other parts. The rotating frame rotatably connected to the fixed frame and two production stations arranged symmetrically, and the reel-changing station provided on the movable frame corresponding to the production station. The structure is compact and reasonably designed, enabling the device to adapt to production lines of different scales and production requirements; the two production stations of the rotating frame can be respectively in the "coiling production" and "reel-changing preparation" states. When one side station is coiling, the other side station can synchronously perform the pre-operations of loading, positioning and cutting of a new material roll. When the current roll reaches the preset meterage, the stations are quickly switched through the rotating frame, realizing the replacement of the material roll without stopping during the continuous production process of thermosetting prepreg, thus significantly improving the production efficiency; achieving seamless docking: the reel-changing station on the movable frame can coincide with the production station on the fixed frame, and a positioning component is provided on the reel-changing station, ensuring that the new material roll can be accurately and smoothly docked onto the production line, avoiding damage to the prepreg during the reel-changing process, and ensuring the continuity of the production line and the product quality; the device adopts an automated design, and the reel-changing process is automatically completed by the equipment, reducing the labor intensity while avoiding human errors, further improving the automation degree of the device, reducing manual intervention, reducing the labor intensity, avoiding problems such as wrinkling and breaking caused by the deviation of the material tape or uneven tension, and improving the product yield rate; the reel-changing station of the movable frame and the production station are precisely aligned through the positioning component. The cutting component quickly completes the cutting of the old material and the pasting of the new material during reel-changing. When cutting the old material, a stable pressing action is used to ensure a flat cross-section. At the same time, the new material head and the old material tail are tightly adhered through the pressing roller, avoiding problems such as loose or misaligned interfaces caused by manual operation in traditional manual reel-changing, ensuring the continuous operation of the material tape, and avoiding material waste and time loss during the traditional reel-changing process; at the same time, each part of the device is relatively independent, adopting a standardized module design, which is convenient for disassembly and maintenance, and can be adapted to different specifications of material rolls through parameter adjustment, enhancing the versatility of the equipment, adapting to the production requirements of multiple varieties, being easy to maintain and repair, and being easy to expand and upgrade according to production needs.

[0026] The structure of the present invention is simple and compact, easy to use, with a high degree of automation, convenient for maintenance and repair, capable of conveniently realizing the replacement of prepreg without stopping the machine, achieving seamless docking of prepreg, ensuring the continuity of the production line and the product quality, and being suitable for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0028] Figure 1Axonometric view of the multi - roll thermosetting prepreg non - stop material change device of the present invention;

[0029] Figure 2 Side - view structural schematic diagram of the multi - roll thermosetting prepreg non - stop material change device of the present invention;

[0030] Figure 3 Structural schematic diagram of the movable frame of the present invention;

[0031] Figure 4 For the present invention Figure 1 Partial enlarged view of A in;

[0032] Figure 5 Structural schematic diagram of the cutting module of the present invention;

[0033] In the figure: 1, base; 2, fixed frame; 3, movable frame; 4, positioning frame; 11, traction ring; 12, driving rack; 13, limit guide rail; 14, limit slider; 15, protective cover; 21, rotating frame; 22, production station; 23, rotating motor; 24, clutch; 25, cutting support frame; 26, cutting support plate; 31, material change station; 32, support frame; 33, locking ring; 34, locking gear ring; 36, positioning plate; 37, positioning telescopic rod; 38, positioning roller; 39, guiding roller; 310, driving motor; 311, driving gear; 312, locking motor; 313, locking gear; 41, cutting pressure plate; 42, cutting driving rod; 43, cutting slider; 44, cutting knife; 45, adjusting pressure block; 46, knife - passing groove; 47, cutting guide rod; 48, telescopic rod; 49, rotating shaft. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] To make the above - mentioned objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0036] Refer to Figure 1 - Figure 5 As shown, this embodiment provides a multi - roll thermosetting prepreg non - stop material change device, including:

[0037] Base 1, which fixes the material change device on the ground;

[0038] Fixing frame 2, the fixing frame 2 is fixedly installed on the base 1, a rotating frame 21 is rotatably connected to the fixing frame 2, and two production stations 22 are symmetrically arranged on the rotating frame 21;

[0039] Moving frame 3, the moving frame 3 is correspondingly arranged with the fixing frame 2 and is slidably connected to the base 1 through a driving assembly; a material changing station 31 corresponding to the production station 22 is arranged on the moving frame 3. During feeding, the vacant production station 22 coincides with the material changing station 31, and a positioning assembly is arranged on the material changing station 31;

[0040] Positioning frame 4, the positioning frame 4 is arranged on the material changing station 31, and a cutting assembly is arranged on the positioning frame 4.

[0041] The present invention discloses a device and method for non-stop material change of multiple rolls of thermosetting prepreg, the device comprises a base 1, a fixed frame 2, a movable frame 3 and a positioning frame 4, a rotating frame 21 rotatably connected to the fixed frame 2 and two symmetrically arranged production stations 22, and a material change station 31 arranged on the movable frame 3 corresponding to the production station 22. The device has a compact structure and a reasonable design, so that the device can adapt to production lines of different scales and production requirements; the two production stations 22 of the rotating frame 21 can be in the state of winding production and material change preparation respectively. When one side of the station is During the rewinding process, the station on the other side can simultaneously carry out the loading, positioning and cutting pre-operations of the new material roll. When the current roll reaches the preset number of meters, the station can be quickly switched through the rotating frame 21, so that the material roll can be replaced without stopping the machine during the continuous production of thermosetting prepreg, thereby significantly improving the production efficiency; achieving seamless docking: the material changing station 31 on the movable frame 3 and the production station 22 on the fixed frame 2 can overlap, and the material changing station 31 is provided with a positioning component, which ensures that the new material roll can be accurately and smoothly docked to the production line, avoiding the prepreg from being stuck during the material changing process. The device adopts an automated design, and the material changing process is completed automatically by the equipment, which reduces labor intensity and avoids human errors, further improves the degree of automation of the device, reduces manual intervention, reduces labor intensity, avoids wrinkles and breaks caused by material deviation or uneven tension, and improves product yield. The material changing station 31 of the movable frame 3 is precisely aligned with the production station 22 through the positioning component. The cutting component quickly completes the cutting of the old material and the pasting of the new material during the material change. When cutting the old material, the cross-section is ensured to be flat through a stable downward pressure action. At the same time, the new material head and the old material tail are tightly fitted together by the pressing roller, avoiding the loose or misaligned interface caused by manual operation in traditional manual material changing, ensuring the continuous operation of the material strip and avoiding material waste and time loss in the traditional material changing process. At the same time, the various parts of the device are relatively independent and adopt a standardized module design, which is easy to disassemble and maintain. It can also adapt to different specifications of material rolls through parameter adjustment. The versatility of the equipment is enhanced, adapting to the production needs of multiple varieties, easy to maintain and repair, and easy to expand and upgrade according to production needs. The present invention has a simple and compact structure, is easy to use, has a high degree of automation, is easy to repair and maintain, can conveniently realize prepreg material replacement without stopping the machine, realizes seamless connection of prepreg materials, ensures the continuity of the production line and product quality, and is suitable for promotion and application.

[0042] In one embodiment of the present invention, a plurality of traction rings 11 are provided on the side wall of the base 1 to facilitate traction of the base 1 .

[0043] In one embodiment of the present invention, the rotating frame 21 is connected to the rotating motor 23 via a clutch 24 , thereby driving the rotating frame 21 to rotate, thereby achieving switching of the production stations 22 .

[0044] For a further optimized solution, the material changing station 31 includes symmetrically arranged support frames 32, and the support frames 32 are arranged with an opening towards the fixed frame 2 and are correspondingly arranged with the production station 22; a locking assembly for loosening and releasing the material roll is arranged between the two support frames 32, and the positioning frame 4 is movably arranged on the two support frames 32. The material changing station 31 is composed of two symmetrically arranged support frames 32. The support frames 32 are designed with an opening on the side facing the fixed frame 2, facilitating the material roll on the production station 22 to be inserted into the material changing vacancy; the locking assembly is arranged on the support frames 32. After the production station 22 coincides with the material changing station 31, the material roll on the production station 22 is locked to prevent the material roll from loosening or shifting during the material changing process, improving the positioning accuracy, making the prepreg butt joint more precise, and improving the material changing quality.

[0045] For a further optimized solution, the locking assembly includes a locking ring 33 rotatably connected to the support frame 32. A locking gear ring 34 is fixedly attached to the locking ring 33 in a fitting manner, and the locking gear ring 34 is in transmission connection with a locking motor 312 arranged on the support frame 32; the positioning assembly is fixedly connected between the two locking gear rings 34. The C-shaped locking ring 33 is rotatably connected to the support frame 32, and its opening corresponds to the opening of the support frame 32; the C-shaped locking gear ring 34 is correspondingly arranged and fitted with the locking ring 33. The rotation of the locking gear ring 34 can drive the rotation of the locking gear ring 34, with accurate angles, providing the prerequisite power for the precise adjustment of the subsequent positioning assembly, and then blocking the opening on the support frame 32 to achieve the locking and loosening of the material roll on the production station 22 that needs to change materials, replacing the traditional manual locking method, improving the operation efficiency, and having uniform and stable clamping force.

[0046] In an embodiment of the present invention, a locking motor 312 is installed on any one of the support frames 32. The output end of the locking motor 312 is in meshing transmission with the locking gear ring 34 through a locking gear 313, thereby driving the locking ring 33 to lock the material roll.

[0047] For a further optimized solution, the positioning assembly includes a positioning plate 36 fixedly connected to the locking gear ring 34. A positioning telescopic rod 37 is fixedly installed on the positioning plate 36. A positioning roller 38 is rotatably connected between the output ends of the two positioning telescopic rods 37, and the positioning roller 38 translates along the radial direction of the locking gear ring 34. The positioning plate 36 is fixedly connected to the inner wall of the locking gear ring 34, and the telescopic direction of the positioning telescopic rod 37 extends and retracts along the radial direction of the locking gear ring 34, thereby adjusting the positioning roller 38 to approach or move away from the locking gear ring 34. Then, through the positioning roller 38, the material head is pressed, assisting the preliminary fitting of the new and old material tapes after cutting, improving the docking reliability, adapting to material rolls of different diameters, ensuring that the center line of the material tape is coaxial with the winding station, and reducing the material tape deviation rate.

[0048] For a further optimized solution, the cutting component includes a cutting pressure plate 41 fixedly connected between two positioning brackets 4. The cutting pressure plate 41 is correspondingly arranged with a cutting support plate 26 provided on the rotating frame 21. When cutting the prepreg, it is clamped between the cutting pressure plate 41 and the cutting support plate 26 and is cut by the cutting module. The cutting pressure plate 41 and the cutting support plate 26 provided on the rotating frame 21 are correspondingly arranged to form a clamping surface, which avoids the sliding of the tape during cutting, ensures a flat cross-section, reduces the defective rate of cutting. At the same time, it reduces the risk of the cutting module directly contacting other components of the equipment and improves the operation safety; the cutting module is used to cut the clamped prepreg, which is convenient for material replacement.

[0049] In an embodiment of the present invention, a number of groups of cutting support frames 25 are provided on the rotating frame 21, and the cutting support plate 26 is supported on the corresponding cutting support frame 25.

[0050] For a further optimized solution, the cutting module includes a cutting drive rod 42 fixedly connected between two positioning brackets 4. A cutting slider 43 is slidably connected to the cutting drive rod 42, and a cutting knife 44 is installed on the cutting slider 43. The blade of the cutting knife 44 passes through the cutting pressure plate 41 and cuts the prepreg. The cutting drive rod 42 is fixedly connected between two positioning brackets 4, and a cutting slider 43 is slidably connected to the cutting drive rod 42 to form a rodless drive structure, thereby driving the cutting slider 43 to move linearly on the cutting drive rod 42, driving the blade of the cutting knife 44 to pass through the knife slot 46 on the cutting pressure plate 41 and then extend between the cutting pressure plate 41 and the cutting support plate 26 to cut the prepreg. The cutting knife 44 has a short stroke and high speed. At the same time, the cutting module and the material replacement station 31 are integrally designed, saving space and being convenient for maintenance.

[0051] In an embodiment of the present invention, a cutting guide rod 47 parallel to the cutting drive rod 42 is fixedly connected between two positioning brackets 4. The cutting guide rod 47 passes through the cutting slider 43 and is slidably connected to the cutting slider 43 to improve the stability of the cutting slider 43.

[0052] In an embodiment of the present invention, the cutting knife 44 is fixed to the cutting slider 43 through an adjusting block 45, and the installation position of the cutting knife 44 can be flexibly adjusted, which is convenient for the maintenance of the cutting knife 44.

[0053] For a further optimized solution, the driving assembly includes a driving rack 12 fixedly installed on the base 1, and the driving rack 12 is arranged along the translation direction of the movable frame 3; a driving motor 310 is fixedly installed on the movable frame 3, and the output end of the driving motor 310 is drivingly connected to a driving gear 311 that meshes with the driving rack 12. The driving rack 12 is fixedly installed on the base 1, and the driving motor 310 installed on the movable frame 3 drives the driving gear 311 to rotate. The driving of the movable frame 3 is realized through the meshing transmission between the driving gear 311 and the driving rack 12. Furthermore, the translation of the material changing station 31 on the base 1 is driven by the movable frame 3, so as to realize the automatic separation and coincidence between the material changing station 31 and the production station 22.

[0054] In an embodiment of the present invention, through the frequency conversion control of the motor, the translation speed of the movable frame 3 can be adjusted. For example, it approaches at a low speed for precise alignment and retreats at a high speed to improve efficiency, so as to adapt to different material changing rhythms.

[0055] In an embodiment of the present invention, compared with belt drive, the gear-rack drive has no risk of slipping and is suitable for high-frequency material changing scenarios.

[0056] In an embodiment of the present invention, a number of limiting guide rails 13 parallel to the driving rack 12 are fixedly connected to the base 1, and a number of limiting sliders 14 are slidably connected to the limiting guide rails 13. The limiting sliders 14 are fixedly connected to the bottom end of the movable frame 3, thereby increasing the stability of the movable frame 3.

[0057] In an embodiment of the present invention, a number of telescopic protective covers 15 are connected to the movable frame 3, and the protective covers 15 cover the limiting guide rails 13, improving the protection of the limiting guide rails 13 and preventing the slurry on the prepreg from sticking to the limiting guide rails 13 and causing restrictions on the movement.

[0058] For a further optimized solution, the middle part of the positioning frame 4 is rotatably connected to the support frame 32, and the lower end of the positioning frame 4 is hinged with an adjusting telescopic rod 48, and the fixed end of the adjusting telescopic rod 48 is rotatably connected to the support frame 32. The middle part of the positioning frame 4 is rotatably connected to the support frame 32 through a rotating shaft 49, and the top end of the positioning frame 4 is higher than the support frame 32 and serves as a free end to support the cutting assembly; while the output end of the adjusting telescopic rod 48 rotatably connected to the support frame 32 pushes the bottom end of the support frame 32, forming a lever-type power mechanism to adjust the angle of the positioning frame 4, and further realizing the clamping and relaxation of the prepreg.

[0059] For a further optimized solution, a plurality of guiding rollers 39 are arranged on the support frame 32. The plurality of guiding rollers 39 are arranged in a ring shape, and the outer ring of the locking ring 33 is in rolling contact with the guiding rollers 39. The plurality of guiding rollers 39 are arranged in a ring shape on the inner wall of the support frame 32, and the outer wall of the locking ring 33 is in rolling contact with the guiding rollers 39, realizing the support and fixation of the locking ring 33 and improving the stability of the support; while the rolling contact between the locking ring 33 and the guiding rollers 39 can reduce the friction force on the premise of ensuring the support strength.

[0060] The present invention also discloses a material changing method based on a multi-roll thermosetting prepreg non-stop material changing device, including the following steps:

[0061] Detect the material changing opportunity, and rotate the production station 22 that needs material changing to one side of the movable frame 3;

[0062] Push the movable frame 3 to translate towards the fixed frame 2 through the driving component, so that the material changing station 31 coincides with the production station 22 that needs material changing;

[0063] The cutting component on the positioning frame 4 is started to clamp and cut the prepreg;

[0064] The positioning component positions and extrudes the end of the movable prepreg onto the material roll that needs material changing and realizes the preliminary winding of the material roll through the material changing station 31;

[0065] The driving component pushes the movable frame 3 to reset, separating the material changing station 31 from the production station 22, realizing non-stop material changing.

[0066] The specific steps are as follows:

[0067] First, the system detects the material changing opportunity in real time. When the material roll on a certain production station 22 is about to be used up and cannot meet the subsequent production requirements, the system automatically identifies and locks this production station 22 as the material changing station 31 to be. Subsequently, by controlling the rotation of the rotating frame 21, the production station 22 to be material changed is rotated to one side of the movable frame 3 to prepare for the subsequent material changing operation.

[0068] Then, start the driving component to push the movable frame 3 to translate smoothly along the base 1 towards the fixed frame 2. During the translation process, the material changing station 31 on the movable frame 3 gradually approaches the production station 22 to be material changed and finally realizes corresponding coincidence. This step ensures that the material changing station 31 can accurately dock with the production station 22 to be material changed, providing a stable platform for the subsequent cutting and material changing operations.

[0069] When the material changing station 31 coincides with the production station 22, the cutting component on the positioning frame 4 starts. The cutting pressing plate 41 and the cutting support plate 26 cooperate closely to clamp and cut the prepreg being used. The cutting process is rapid and accurate, ensuring that the cut surface of the prepreg is flat and undamaged.

[0070] After cutting is completed, the positioning component starts to function. The positioning telescopic rod 37 on the positioning plate 36 extends, pushing the positioning roller 38 to position and squeeze the end of the moving prepreg onto the roller that needs to be reloaded. By adjusting the extension length of the positioning telescopic rod 37 and the rotation angle of the positioning roller 38, precise positioning and squeezing of the prepreg end can be achieved. Subsequently, the locking component on the material change station 31 starts to work, firmly locking the new material roll on the support frame 32, and achieving the preliminary winding of the roller through the rotation of the rotating frame 21.

[0071] Finally, when the new material roll has been successfully connected and starts to be wound, the driving component is started again, pushing the movable frame 3 to reset along the base 1. During the reset process, the material change station 31 and the production station 22 are gradually separated, preparing for the next material change cycle. Thus, the entire material change process is completed, achieving the goal of changing materials without stopping the machine.

[0072] The material change method of the present invention not only improves production efficiency, reduces production costs, but also ensures the production quality of thermosetting prepreg. At the same time, the method is simple to operate and easy to master, providing a strong technical guarantee for the continuous and efficient production of thermosetting prepreg.

[0073] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, 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 should not be construed as a limitation to the present invention.

[0074] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A multi-roll thermosetting prepreg non-stop material changing device, characterized in that, include: A base (1), wherein the base (1) fixes the material changing device on the ground; A fixed frame (2), the fixed frame (2) is fixedly mounted on the base (1), a rotating frame (21) is rotatably connected to the fixed frame (2), and two production stations (22) are symmetrically arranged on the rotating frame (21); A movable frame (3), the movable frame (3) is arranged corresponding to the fixed frame (2) and is slidably connected to the base (1) through a driving component; a material changing station (31) corresponding to the production station (22) is arranged on the movable frame (3); when loading, the vacant production station (22) overlaps with the material changing station (31), and a positioning component is arranged on the material changing station (31); A positioning frame (4), the positioning frame (4) is arranged on the material changing station (31), and a cutting component is arranged on the positioning frame (4).

2. The multi-roll thermosetting prepreg non-stop material-changing device according to claim 1, characterized in that: The material changing station (31) includes symmetrically arranged support frames (32), the support frames (32) are opened toward one side of the fixing frame (2) and are arranged corresponding to the production station (22); a locking assembly for loosening the material roll is arranged between the two support frames (32), and the positioning frame (4) is movably arranged on the two support frames (32).

3. The multi-roll thermosetting prepreg non-stop material change device according to claim 2, wherein: The locking assembly comprises a locking ring (33) rotatably connected to the support frame (32); a locking gear ring (34) is fixedly attached to the locking ring (33); the locking gear ring (34) is transmission-connected to a locking motor (312) provided on the support frame (32); and the positioning assembly is fixedly connected between the two locking gear rings (34).

4. The multi-roll thermosetting prepreg non-stop material change device according to claim 3, wherein: The positioning assembly includes a positioning plate (36) fixedly connected to the locking gear ring (34), a positioning telescopic rod (37) fixedly installed on the positioning plate (36), a positioning roller (38) rotatably connected between the output ends of the two positioning telescopic rods (37), and the positioning roller (38) translates along the radius direction of the locking gear ring (34).

5. The multi-roll thermosetting prepreg non-stop material change device according to claim 2, characterized in that: The cutting assembly comprises a cutting plate (41) fixedly connected between the two positioning frames (4); the cutting plate (41) is arranged corresponding to a cutting support plate (26) arranged on the rotating frame (21); when cutting prepreg, the cutting plate (41) is clamped between the cutting plate (41) and the cutting support plate (26), and is cut by a cutting module.

6. The multi-roll thermosetting prepreg non-stop material changing device according to claim 5, wherein: The cutting module comprises a cutting drive rod (42) fixedly connected between the two positioning frames (4); a cutting slider (43) is slidably connected to the cutting drive rod (42); a cutting knife (44) is mounted on the cutting slider (43); the blade of the cutting knife (44) passes through the cutting plate (41) and cuts the prepreg.

7. The multi-roll thermosetting prepreg non-stop material changing device according to claim 1, characterized in that: The driving assembly comprises a driving rack (12) fixedly mounted on the base (1), the driving rack (12) being arranged along the translation direction of the movable frame (3); a driving motor (310) being fixedly mounted on the movable frame (3), the output end of the driving motor (310) being transmission-connected to a driving gear (311) meshing with the driving rack (12).

8. The multi-roll thermosetting prepreg non-stop material changing device according to claim 2, wherein: The middle part of the positioning frame (4) is rotatably connected to the support frame (32). The lower end of the positioning frame (4) is hinged with an adjusting telescopic rod (48), and the fixed end of the adjusting telescopic rod (48) is rotatably connected to the support frame (32).

9. The multi-roll thermosetting prepreg non-stop material change device according to claim 3, wherein: A plurality of guiding rollers (39) are arranged on the support frame (32). The plurality of guiding rollers (39) are arranged in a ring shape, and the outer ring of the locking ring (33) is in rolling contact with the guiding rollers (39).

10. A method for changing materials without stopping the machine for multi-roll thermosetting prepregs, based on the multi-roll thermosetting prepreg material-changing device without stopping the machine according to any one of claims 1-9, characterized in that It includes the following steps: Detect the material change timing, and rotate the production station (22) that needs material change to one side of the movable frame (3); Push the movable frame (3) to translate towards the fixed frame (2) through the driving assembly, so that the material change station (31) corresponds to and coincides with the production station (22) that needs material change; The cutting assembly on the positioning frame (4) is started to clamp and cut the prepreg; The positioning assembly positions and extrudes the end of the movable prepreg onto the material roll that needs material change and realizes the preliminary winding of the material roll through the material change station (31); The driving assembly pushes the movable frame (3) to reset, so that the material change station (31) is separated from the production station (22), and the material change without stopping the machine is realized.

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