A yarn spreading frame device for prepreg production
By designing an auxiliary pushing yarn unfolding frame device, and utilizing the staggered movement of the active and driven blocks and the eccentric movement of the annular groove, the problem of carbon fiber entanglement was solved, achieving complete unfolding and uniform soaking of carbon fiber, thus improving the production efficiency of prepreg.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIHAI BODA AUTOMATION EQUIP CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-06-19
AI Technical Summary
In prepreg production, carbon fibers often become entangled before being transferred to the impregnation stage, preventing them from fully unfolding and affecting the impregnation effect.
A yarn spreading frame device with auxiliary pushing function was designed. By combining the yarn spreader and the dyeing mechanism, the carbon fiber yarn group can be spread out and uniformly soaked by the misaligned movement of the active block and the driven block and the eccentric movement of the annular groove.
Ensuring that the carbon fiber assembly is fully expanded and evenly immersed improves the impregnation effect and production efficiency.
Smart Images

Figure CN224377334U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of yarn spreading devices, specifically a yarn spreading frame device for prepreg production that can assist in pushing. Background Technology
[0002] Prepreg is a composition of resin matrix and reinforcement made by impregnating continuous fibers or fabrics with a resin matrix under strictly controlled conditions.
[0003] A search revealed that patent CN216100523U discloses a prepreg tape preparation device that involves pressing multiple layers of prepreg fibers together. The device includes a yarn rack, a yarn guide plate, a yarn spreading roller, a prepreg tank, an extrusion roller, a pressing roller, a preforming device, a plastic film traction device, a cooling device, a traction machine, a cutting device, and a material collection rack, arranged sequentially. Continuous fibers are drawn from the yarn rack, separated into several layers by the yarn guide plate, and then spread out by the yarn spreading roller. These fibers enter the prepreg tank, where they are prepreg-impregnated with resin to obtain several layers of prepreg tape. The tape then passes through several sets of extrusion rollers, where the pressing roller presses the layers together. After passing through the preforming device, the tape continues through the pressing roller and then through the plastic film traction device. It enters the cooling device for cooling, is then pulled by the traction machine to the cutting blade for cutting, and finally enters the material collection rack. This invention can improve the problem of resin penetration difficulties caused by excessive fibers during prepreg tape preparation, improve the wettability of the prepreg tape, reduce subsequent processing steps, and effectively improve production efficiency.
[0004] In the process of preparing carbon fiber prepreg using the existing equipment, the fibers need to be fully unfurled before being transferred to the impregnation stage to ensure that the carbon fiber yarn can be fully impregnated. However, the fibers often become entangled before entering the impregnation device, which prevents the carbon fiber from being fully unfurled and thus affects the impregnation effect. Summary of the Invention
[0005] The purpose of this invention is to provide a yarn spreading frame device for prepreg production that can assist in pushing, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A yarn spreading frame device for prepreg production with assisted pushing function includes a mounting platform. A carbon fiber yarn assembly is placed on the upper end of the mounting platform. A control box is fixedly installed on the upper end of the mounting platform near the carbon fiber yarn assembly. A yarn spreader is installed inside the mounting platform. A winding machine is installed on the upper end of the mounting platform away from the carbon fiber yarn assembly. An impregnation and dyeing mechanism for soaking the carbon fiber yarn assembly is installed on the upper end of the mounting platform near the winding machine. A yarn spreading mechanism for pushing and spreading the material is installed on the upper end of the impregnation and dyeing mechanism near the yarn spreader.
[0008] Furthermore, the dyeing mechanism includes a soaking tank, which is fixedly installed on the upper end of the mounting platform near the winding machine. A moving rod is rotatably installed on the inner wall of the soaking tank near the winding machine. A drive motor is fixedly installed on the side end of the soaking tank near the sliding rod. A turntable is fixedly installed on the output end of the drive motor. An annular groove is formed on the side end of the turntable away from the drive motor.
[0009] Furthermore, a movable block is rotatably mounted on one end of the movable rod near the turntable, and a sliding rod is rotatably mounted on the side end of the movable block near the annular groove, and the sliding rod is slidably disposed in the annular groove.
[0010] Furthermore, the yarn spreading mechanism includes a yarn spreading frame, with protective shells fixedly installed at both ends of the yarn spreading frame. The protective shells are fixedly installed at the upper end of the soaking tank near the yarn spreading device. Multiple sliding grooves are staggered at both ends of the yarn spreading frame. A driven block and a driving block are slidably installed in each sliding groove, and a yarn spreading cylinder is rotatably installed between the driven blocks and between the driving blocks.
[0011] Furthermore, each driven block has a spring fixedly installed at its lower end, each spring has a limit block fixedly installed at its lower end, and each limit block is fixedly installed on the side of the yarn spreading frame. Each driving block has a connecting rope fixedly installed at its upper end, and the other end of each connecting rope is fixedly installed on the upper end of the driven block.
[0012] Furthermore, each of the active blocks has a transmission rod rotatably mounted on its side end, and the end of each transmission rod away from the active block is rotatably connected to a transmission disk. A rotating rod is fixedly mounted between the transmission disks, and multiple resistance plates are arrayed on the outer wall of the rotating rod.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model uses the movement of the active block to drive the movement of the driven block, so that the yarn spreading cylinder moves up and down in a staggered reciprocating motion, thereby pulling and straightening the carbon fiber thread group wound on the surface of the yarn spreading cylinder, so that the wound carbon fiber thread group is unwound, so that the material can be soaked more completely, and at the same time, the auxiliary material is moved to the dyeing mechanism.
[0015] 2. This utility model uses the eccentric movement of the annular groove to move the sliding rod in the annular groove. The sliding rod drives the moving rod to move through the moving block, so that the carbon fiber yarn wrapped on the surface of the moving block is unfolded, and at the same time the carbon fiber yarn is more evenly spread and soaked. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the immersion tank of this utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the yarn spreading frame of this utility model;
[0019] Figure 4 for Figure 3 Enlarged structural diagram at point A;
[0020] Figure 5 This is a schematic diagram of the transmission rod of this utility model.
[0021] In the diagram: 1. Mounting platform; 101. Carbon fiber yarn assembly; 102. Control box; 103. Winding machine; 104. Yarn spreader; 2. Dyeing mechanism; 201. Soaking tank; 202. Sealing ring; 203. Drive motor; 204. Turntable; 205. Moving block; 206. Moving rod; 207. Sliding rod; 3. Yarn spreading mechanism; 301. Yarn spreading frame; 302. Protective shell; 303. Resistance plate; 304. Rotating rod; 305. Transmission disc; 306. Transmission rod; 307. Driving block; 308. Spring; 309. Limiting block; 310. Yarn spreading cylinder; 311. Connecting rope; 312. Driven block; 313. Guide rod. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-5 A yarn spreading frame device for prepreg production with auxiliary pushing function includes a mounting platform 1. A carbon fiber yarn group 101 is placed on the upper end of the mounting platform 1. A control box 102 is fixedly installed on the upper end of the mounting platform 1 near the carbon fiber yarn group 101. A yarn spreader 104 is arranged inside the mounting platform 1. A winding machine 103 is arranged on the upper end of the mounting platform 1 away from the carbon fiber yarn group 101. A dyeing mechanism 2 for soaking the carbon fiber yarn group 101 is arranged on the upper end of the mounting platform 1 near the winding machine 103. A yarn spreading mechanism 3 for pushing and spreading the material is arranged on the upper end of the dyeing mechanism 2 near the yarn spreader 104. Specifically, when the carbon fiber yarn group 101 is spread out by the yarn spreader 104 and transferred to the dyeing mechanism 2, the yarn spreading mechanism 3 arranged between the yarn spreader 104 and the dyeing mechanism 2 pushes the carbon fiber yarn group 101 and simultaneously straightens and spreads the carbon fiber yarn group 101 so that the carbon fiber yarn group 101 is soaked more completely.
[0024] Please see Figures 1-4The dyeing mechanism 2 includes an immersion tank 201, which is fixedly installed on the upper end of the mounting platform 1 near the winding machine 103. A movable rod 206 is rotatably installed on the inner wall of the immersion tank 201 near the winding machine 103. A sealing ring 202 is provided between the immersion tank 201 and the movable rod 206. The sealing ring 202 keeps the movable rod 206 sealed when it swings left and right. A drive motor 203 is fixedly installed on the side end of the immersion tank 201 near the sliding rod 207. A turntable 204 is fixedly installed on the output end of the drive motor 203. A circular groove is opened on the side end of the turntable 204 away from the drive motor 203. The circular groove is located on one side of the turntable 204, and the distance between the center of the circular groove and the center of the turntable 204 is the radius of the turntable 204, so that the circular groove moves eccentrically during the rotation of the turntable 204.
[0025] Please see Figures 1-4 A movable block 205 is rotatably mounted on one end of the movable rod 206 near the turntable 204. A sliding rod 207 is rotatably mounted on the side end of the movable block 205 near the annular groove. The sliding rod 207 is slidably disposed in the annular groove. When the turntable 204 rotates, the annular groove moves eccentrically, causing the sliding rod 207 in the annular groove to move. The sliding rod 207 drives the movable rod 206 to move through the movable block 205, so that the carbon fiber yarn group 101 wound on the surface of the movable block 205 is unwound, and at the same time, the carbon fiber yarn group 101 is more evenly spread and soaked.
[0026] Please see Figures 1-5 The yarn spreading mechanism 3 includes a yarn spreading frame 301. Protective shells 302 are fixedly installed at both ends of the yarn spreading frame 301. The protective shells 302 are fixedly installed at the upper end of the soaking tank 201 near the yarn spreading device 104. Multiple sliding grooves are staggered at both ends of the yarn spreading frame 301. A driven block 312 and a driving block 307 are slidably installed in each sliding groove. A yarn spreading cylinder 310 is rotatably installed between the driven block 312 and the driving block 307. When the carbon fiber yarn group 101 moves to the surface of the yarn spreading cylinder 310 and is wound, the driving block 307 moves and drives the driven block 312 to move, so that the yarn spreading cylinder 310 moves up and down in a staggered reciprocating motion. This causes the carbon fiber yarn group 101 wound on the surface of the yarn spreading cylinder 310 to be pulled and straightened by the yarn spreading cylinder 310, so that the wound carbon fiber yarn group 101 is unwound, so that the carbon fiber yarn group 101 is soaked more completely. At the same time, it assists the carbon fiber yarn group 101 to move into the dyeing mechanism 2.
[0027] Please see Figures 1-5Each driven block 312 has a spring 308 fixedly installed at its lower end, and each spring 308 has a limit block 309 fixedly installed at its lower end. The limit blocks 309 are also fixedly installed on the side of the yarn spreading frame 301. When the driven block 312 moves upward to a suitable position, the spring 308 extends, making it easier for the spring 308 to pull the driven block 312 back to its original position when it stops moving. Each driving block 307 has a connecting rope 311 fixedly installed at its upper end. When the driving block 307 moves upward, the driven block 312 moves downward; when the driving block 307 moves downward, the driven block 312 moves upward. The other end of the connecting rope 311 is fixedly installed on the upper end of the driven block 312. The side end of the yarn spreading frame 301 near the connecting rope 311 is rotatably installed with a guide rod 313. The guide rod 313 changes the movement path of the connecting rope 311, making it more convenient for the driving block 307 to move synchronously with the driven block 312 through the connecting rope 311.
[0028] Please see Figures 1-5 Each of the active blocks 307 has a transmission rod 306 rotatably mounted on its side. The end of the transmission rod 306 away from the active block 307 is rotatably connected to a transmission disc 305. A rotating rod 304 is fixedly mounted between the transmission discs 305. Multiple resistance plates 303 are arrayed on the outer wall of the rotating rod 304. After the carbon fiber yarn group 101 of the yarn spreader 104 comes into contact with the resistance plate 303, the carbon fiber yarn group 101 moves, causing the resistance plate 303 to move, which in turn causes the rotating rod 304 to rotate and the transmission disc 305 to rotate. This causes the active block 307 to move up and down through the transmission rod 306.
[0029] Working Principle: In use, the carbon fiber yarn group 101 to be processed is placed on the mounting platform 1. The electrical control components in the control box 102 control the operation of the yarn spreader 104 and the winding machine 103, causing the carbon fiber yarn group 101 to move and unfold. The movement of the carbon fiber yarn group 101 causes the resistance plate 303 to drive the rotating rod 304 to rotate, thereby causing the transmission disc 305 to rotate. The transmission rod 306 pushes the driving block 307 to move up and down. When the driving block 307 moves, the connecting rope 311 drives the driven block 312 to move, causing the yarn spreading cylinder 310 in the yarn spreading frame 301 to move up and down in a staggered motion. This pulls and straightens the carbon fiber yarn group 101 wound on the surface of the yarn spreading cylinder 310, allowing the wound carbon fiber yarn group 101 to be unfolded so that it can be soaked more completely. At the same time, it assists in moving the carbon fiber yarn group 101 to the dyeing mechanism 2.
[0030] At the same time, the drive motor 203 is started, causing the turntable 204 to rotate, the annular groove to move eccentrically, and the sliding rod 207 in the annular groove to move. The sliding rod 207 drives the moving rod 206 to move through the moving block 205, so that the carbon fiber yarn group 101 wrapped on the surface of the moving block 205 is unfolded, and the carbon fiber yarn group 101 is soaked more evenly.
[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A yarn spreading frame device for prepreg production with assisted pushing function, comprising a mounting platform (1), characterized in that: A carbon fiber yarn group (101) is placed on the upper end of the mounting platform (1). A control box (102) is fixedly installed on the upper end of the mounting platform (1) near the carbon fiber yarn group (101). A yarn spreader (104) is provided inside the mounting platform (1). A winding machine (103) is provided on the upper end of the mounting platform (1) away from the carbon fiber yarn group (101). A dyeing mechanism (2) for soaking the carbon fiber yarn group (101) is provided on the upper end of the mounting platform (1) near the winding machine (103). A yarn spreading mechanism (3) for pushing and spreading the material is provided on the upper end of the dyeing mechanism (2) near the yarn spreader (104).
2. The yarn spreading frame device for prepreg production with assisted pushing capability according to claim 1, characterized in that: The dyeing mechanism (2) includes a soaking tank (201), and the soaking tank (201) is fixedly installed on the upper end of the mounting platform (1) near the winding machine (103). A moving rod (206) is rotatably installed on the inner wall of the soaking tank (201) near the winding machine (103). A drive motor (203) is fixedly installed on the side end of the soaking tank (201) near the sliding rod (207). A turntable (204) is fixedly installed on the output end of the drive motor (203). A circular groove is opened on the side end of the turntable (204) away from the drive motor (203).
3. The yarn spreading frame device for prepreg production with assisted pushing capability according to claim 2, characterized in that: The movable rod (206) is rotatably mounted with a movable block (205) at one end near the turntable (204), and a sliding rod (207) is rotatably mounted on the side end of the movable block (205) near the annular groove, and the sliding rod (207) is slidably disposed in the annular groove.
4. The yarn spreading frame device for prepreg production with assisted pushing capability according to claim 1, characterized in that: The yarn spreading mechanism (3) includes a yarn spreading frame (301), and protective shells (302) are fixedly installed at both ends of the yarn spreading frame (301). The protective shells (302) are fixedly installed at the upper end of the soaking tank (201) near the yarn spreading device (104). Multiple sliding grooves are staggered at both ends of the yarn spreading frame (301). A driven block (312) and a driving block (307) are slidably installed in each sliding groove. Yarn spreading cylinders (310) are rotatably installed between the driven blocks (312) and between the driving blocks (307).
5. The yarn spreading frame device for prepreg production with assisted pushing capability according to claim 4, characterized in that: The lower end of each driven block (312) is fixedly equipped with a spring (308), the lower end of each spring (308) is fixedly equipped with a limit block (309), and the limit block (309) is fixedly installed on the side of the yarn spreading frame (301). The upper end of each driving block (307) is fixedly equipped with a connecting rope (311), and the other end of each connecting rope (311) is fixedly installed on the upper end of the driven block (312).
6. The yarn spreading frame device for prepreg production with assisted pushing capability according to claim 5, characterized in that: Each of the active blocks (307) has a transmission rod (306) rotatably mounted on its side end. The end of the transmission rod (306) away from the active block (307) is rotatably connected to a transmission disc (305). A rotating rod (304) is fixedly mounted between the transmission discs (305). Multiple resistance plates (303) are arrayed on the outer wall of the rotating rod (304).