Yarn spreading mechanism for compounding prepreg

Abstract

The utility model discloses a yarn spreading mechanism for prepreg compounding, and relates to the technical field of yarn spreading mechanisms, the yarn spreading mechanism comprises a support, the inner side of the support is slidably connected with a moving frame, the two sides of the moving frame are fixedly connected with supporting arms, the top ends of the two supporting arms are fixedly connected with L-shaped plates, a supporting roller is rotatably connected between the two L-shaped plates, and the supporting roller is fixedly connected with the moving frame. The yarn spreading mechanism comprises two supporting arms, L-shaped rods are arranged on the inner sides of the two supporting arms correspondingly, swing arms are hinged to the top ends of the two L-shaped rods correspondingly, a limiting roller is rotationally connected between the two swing arms, connecting rods are arranged at the inflection points of the two L-shaped rods correspondingly, and limiting rods are arranged at the two ends of the limiting roller correspondingly. The swing arm is pushed to drive the limiting roller to be attached to the supporting roller, and the stability of the cloth in the conveying process is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of yarn spreading mechanisms, specifically a yarn spreading mechanism for prepreg composites. Background Technology

[0002] Prepregs are intermediate materials in the manufacture of composite materials and their components, forming the basic unit of composite materials. Their uniformity and stability are crucial for ensuring the quality and reliability of composite materials and their components. Resin-based composites (RMCs) possess high specific strength and specific stiffness, allowing for excellent design performance and effectively reducing the structural mass of spacecraft. They are a key focus of current aerospace material development and are gradually replacing traditional metallic materials. In recent years, the use of carbon fiber composites in spacecraft such as satellites and spaceships has increased year by year. In particular, carbon fiber prepreg composites are widely used in the main structures of satellites, such as central load-bearing cylinders, base plates, and connecting frames, meeting various functional requirements of spacecraft.

[0003] The production of carbon fiber prepreg requires preparing carbon fiber bundles of the required width and content, laying them evenly on a fiber frame, and simultaneously applying heated resin evenly to the upper and lower release papers. The laid carbon fiber bundles and resin-coated release papers are then placed into rollers, and the pressure of the rollers evenly impregnates the carbon fiber bundles between the upper and lower release papers with resin. After the resin-impregnated carbon fiber material is cooled and shaped, it is then trimmed and wound to become the finished carbon fiber prepreg fabric. During the fabric transfer process and the limiting and supporting process of the fabric, the fabric is tightened by bolts, which makes it inconvenient to adjust the fabric and the operation process is cumbersome. Summary of the Invention

[0004] The purpose of this invention is to provide a yarn spreading mechanism for prepreg composites to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a yarn spreading mechanism for prepreg composite, comprising a support frame, a movable frame slidably connected to the inner side of the support frame, support arms fixedly connected to both sides of the movable frame, an L-shaped plate fixedly connected to the top of each of the two support arms, a support roller rotatably connected between the two L-shaped plates, an L-shaped rod provided on the inner side of each of the two support arms, a swing arm hinged to the top of each of the two L-shaped rods, a limit roller rotatably connected between the two swing arms, a connecting rod provided at the inflection point of each of the two L-shaped rods, and a limit rod provided at both ends of the limit roller.

[0006] Preferably, both ends of the L-shaped rod are fixedly connected to a pivot, the two pivots pass through the two support arms respectively and are rotatably connected to the two support arms, the two pivots are slidably connected to a moving block, the bottom ends of the two connecting rods are hinged to the two moving blocks respectively, and the two L-shaped rods are fixedly connected to a crossbar on one side of the inflection point, the two crossbars pass through the two connecting rods respectively and are rotatably connected to the two connecting rods to support the L-shaped rod.

[0007] Preferably, each of the two support arms is rotatably connected to a first threaded rod, and the two first threaded rods respectively pass through the two moving blocks and are threadedly connected to the two moving blocks. Each of the two support arms is fixedly connected to a motor at its bottom, and the output ends of the two motors are fixedly connected to the bottom ends of the two first threaded rods respectively. The motors drive the first threaded rods to rotate, thereby driving the moving blocks to rise and fall.

[0008] Preferably, each end of the limiting roller is fixedly connected to a connecting rod, the two connecting rods pass through the two limiting rods respectively and are rotatably connected to the two limiting rods, the inner side of each of the two L-shaped rods is provided with a sliding groove, and a vertical rod is fixedly connected inside each of the two sliding grooves.

[0009] Preferably, each of the two vertical rods is fitted with a sliding sleeve and slidably connected to the outside of the two vertical rods, and each of the two vertical rods is fitted with a limiting spring. The two ends of the two limiting springs are respectively fixedly connected to the sliding sleeve and the inside of the sliding groove, thereby limiting the vertical rods.

[0010] Preferably, each of the two sliding sleeves is fixedly connected to a hinge rod on both sides, and the four hinge rods pass through the two limiting rods respectively and are rotatably connected to the two limiting rods to support the sliding sleeves.

[0011] Preferably, each of the two brackets has a second threaded rod rotatably connected to both sides inside. The two second threaded rods pass through the bottom ends of the two support arms and are threadedly connected to them. Each bracket has a forward and reverse motor fixedly connected to both ends on one side. The output ends of the two forward and reverse motors are fixedly connected to the two second threaded rods, thereby causing the second threaded rods to rotate and move the support arm. Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This application uses a motor to start and drive the first threaded rod to rotate, thereby causing the first threaded rod to drive the moving block to rise or fall during rotation. The moving block then drives the connecting rod to move. When the connecting rod moves, it pushes the L-shaped rod to rotate around the rotating shaft, which in turn pushes the swing arm and the limiting roller to deflect, thereby making the limiting roller and the support roller fit together, thus pressing the fabric and ensuring the stability of the fabric.

[0013] 2. In this application, when the limiting roller and the support roller are in contact, the limiting roller causes the connecting rod and the limiting rod to move under force. Then, when the limiting rod moves, it causes the hinge rod and the sliding sleeve to move, so that the sliding sleeve moves outside the vertical rod. This causes the limiting spring to be compressed or stretched when the sliding sleeve moves outside the vertical rod, thereby limiting and supporting the sliding sleeve through the limiting spring, pushing the swing arm and causing the limiting roller and the support roller to remain in contact, thus improving the stability of the fabric during transmission. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the support arm of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the L-shaped rod of this utility model;

[0017] Figure 4 This is a schematic diagram of the connecting rod of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the limiting rod of this utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the sliding sleeve of this utility model.

[0020] The following are the labels in the diagram: 1. Bracket; 2. Movable frame; 3. Support arm; 4. L-shaped plate; 5. Support roller; 6. L-shaped rod; 7. Rotating shaft; 8. Swing arm; 9. Limiting roller; 10. First threaded rod; 11. Movable block; 12. Connecting rod; 13. Limiting rod; 14. Horizontal bar; 15. Slide groove; 16. Vertical bar; 17. Sliding sleeve; 18. Hinge rod; 19. Second threaded rod; 20. Forward and reverse motor; 21. Limiting spring. Detailed Implementation

[0021] 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.

[0022] Example: Figure 1 - Figure 6As shown, this utility model provides a technical solution for a yarn spreading mechanism for prepreg composites, including a support 1, a movable frame 2 slidably connected to the inner side of the support 1, support arms 3 fixedly connected to both sides of the movable frame 2, L-shaped plates 4 fixedly connected to the top of each of the two support arms 3, support rollers 5 rotatably connected between the two L-shaped plates 4, L-shaped rods 6 provided on the inner side of each of the two support arms 3, swing arms 8 hinged to the top of each of the two L-shaped rods 6, limit rollers 9 rotatably connected between the two swing arms 8, and connecting rods 9 at the inflection points of each of the two L-shaped rods 6. The connecting rod 12 and the limiting roller 9 are both equipped with limiting rods 13 at both ends. The L-shaped rod 6 is fixedly connected to the two ends with rotating shafts 7. The two rotating shafts 7 pass through the two supporting arms 3 respectively and are rotatably connected to the two supporting arms 3. The two rotating shafts 7 are slidably connected to the two moving blocks 11. The bottom ends of the two connecting rods 12 are respectively hinged to the two moving blocks 11. The two L-shaped rods 6 are fixedly connected to one side of the inflection point with crossbars 14. The two crossbars 14 pass through the two connecting rods 12 respectively and are rotatably connected to the two connecting rods 12 to support the L-shaped rods 6.

[0023] Both support arms 3 are rotatably connected to first threaded rods 10. The two first threaded rods 10 pass through two moving blocks 11 and are threadedly connected to the two moving blocks 11. The bottom of both support arms 3 is fixedly connected to motors. The output ends of the two motors are fixedly connected to the bottom ends of the two first threaded rods 10. The motors drive the first threaded rods 10 to rotate, thereby driving the moving blocks 11 to rise and fall. Both ends of the limiting rollers 9 are fixedly connected to connecting rods 12. The two connecting rods 12 pass through two limiting rods 13 and are rotatably connected to the two limiting rods 13. The inner sides of the two L-shaped rods 6 are provided with sliding grooves 15. The two sliding grooves 15 are fixedly connected to vertical rods 16. The outer sides of the two vertical rods 16 are fitted with and slidably connected to sliding sleeves 17. The outer sides of the two vertical rods 16 are fitted with limiting springs 21. The two ends of the two limiting springs 21 are fixedly connected to the sliding sleeves 17 and the sliding grooves 15, respectively, thereby limiting the vertical rods 16.

[0024] Two sliding sleeves 17 are fixedly connected to two sides with hinge rods 18. The four hinge rods 18 pass through two limiting rods 13 and are rotatably connected to the two limiting rods 13, thereby supporting the sliding sleeves 17. Two second threaded rods 19 are rotatably connected to both sides inside the two brackets 1. The two second threaded rods 19 pass through the bottom ends of the two support arms 3 and are threadedly connected to the two support arms 3. Two forward and reverse motors 20 are fixedly connected to both ends of one side of the bracket 1. The output ends of the two forward and reverse motors 20 are fixedly connected to the two second threaded rods 19, thereby causing the second threaded rods 19 to rotate and move the support arms 3.

[0025] In use, the forward and reverse motor 20 drives the second threaded rod 19 to rotate, which in turn moves the support arm 3. When the support arm 3 moves, it moves the two L-shaped plates 4, which in turn move the support roller 5. This facilitates the adjustment of the support position of the fabric. By passing the fabric between the support roller 5 and the limiting roller 9, the fabric is clamped and limited by the limiting roller 9 and the support roller 5, which facilitates the transfer of the fabric and improves the stability of the fabric during impregnation.

[0026] The motor starts and drives the first threaded rod 10 to rotate, which in turn drives the moving block 11 to rise or fall. The moving block 11 then drives the connecting rod 12 to move. When the connecting rod 12 moves, it pushes the L-shaped rod 6 to rotate around the rotating shaft 7. This causes the L-shaped rod 6 to push the swing arm 8 and the limiting roller 9 to deflect, so that the limiting roller 9 is in contact with the support roller 5, thereby pressing the fabric and ensuring its stability.

[0027] Simultaneously, when the limiting roller 9 and the support roller 5 are in contact, the limiting roller 9 causes the connecting rod 12 and the limiting rod 13 to move under force. Then, when the limiting rod 13 moves, it causes the hinge rod 18 and the sliding sleeve 17 to move, causing the sliding sleeve 17 to move outside the vertical rod 16. This causes the sliding sleeve 17 to compress or stretch the limiting spring 21 when it moves outside the vertical rod 16. Thus, the limiting spring 21 limits and supports the sliding sleeve 17, pushes the swing arm 8, and causes the limiting roller 9 to remain in contact with the support roller 5, improving the stability of the fabric during transmission.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A yarn spreading mechanism for prepreg composites, characterized in that: The device includes a bracket (1), a movable frame (2) which is slidably connected to the inner side of the bracket (1), and support arms (3) which are fixedly connected to both sides of the movable frame (2). L-shaped plates (4) are fixedly connected to the top ends of the two support arms (3). Support rollers (5) are rotatably connected between the two L-shaped plates (4). L-shaped rods (6) are provided on the inner side of the two support arms (3). Swing arms (8) are hinged to the top ends of the two L-shaped rods (6). Limiting rollers (9) are rotatably connected between the two swing arms (8). Connecting rods (12) are provided at the inflection points of the two L-shaped rods (6). Limiting rods (13) are provided at both ends of the limiting rollers (9).

2. The yarn spreading mechanism for prepreg composite according to claim 1, characterized in that: Both ends of the L-shaped rod (6) are fixedly connected to a rotating shaft (7). The two rotating shafts (7) pass through the two support arms (3) respectively and are rotatably connected to the two support arms (3). The two rotating shafts (7) are slidably connected to a moving block (11). The bottom ends of the two connecting rods (12) are hinged to the two moving blocks (11) respectively. The two L-shaped rods (6) are fixedly connected to a crossbar (14) on one side of the inflection point. The two crossbars (14) pass through the two connecting rods (12) respectively and are rotatably connected to the two connecting rods (12).

3. The yarn spreading mechanism for prepreg composite according to claim 1, characterized in that: Both of the support arms (3) are rotatably connected with first threaded rods (10). The two first threaded rods (10) pass through the two moving blocks (11) respectively and are threadedly connected to the two moving blocks (11). The bottom of both support arms (3) is fixedly connected with motors. The output ends of the two motors are fixedly connected to the bottom ends of the two first threaded rods (10) respectively.

4. The yarn spreading mechanism for prepreg composite according to claim 1, characterized in that: Both ends of the limiting roller (9) are fixedly connected to connecting rods (12). The two connecting rods (12) pass through the two limiting rods (13) respectively and are rotatably connected to the two limiting rods (13). The inner sides of the two L-shaped rods (6) are provided with sliding grooves (15), and the interiors of the two sliding grooves (15) are fixedly connected with vertical rods (16).

5. The yarn spreading mechanism for prepreg composite according to claim 4, characterized in that: Both vertical rods (16) are fitted with and slidably connected to a sliding sleeve (17) on their outer sides. Both vertical rods (16) are fitted with a limiting spring (21) on their outer sides. The two ends of the limiting spring (21) are fixedly connected to the sliding sleeve (17) and the sliding groove (15) respectively.

6. The yarn spreading mechanism for prepreg composite according to claim 5, characterized in that: Both sides of the two sliding sleeves (17) are fixedly connected with hinge rods (18), and the four hinge rods (18) pass through the two limiting rods (13) respectively and are rotatably connected to the two limiting rods (13).

7. The yarn spreading mechanism for prepreg composite according to claim 6, characterized in that: The two brackets (1) are rotatably connected to the two sides inside. The two second threaded rods (19) pass through the bottom of the two support arms (3) and are threadedly connected to the two support arms (3). The two ends of one side of the bracket (1) are fixedly connected to the positive and negative motors (20). The output ends of the two positive and negative motors (20) are fixedly connected to the two second threaded rods (19).

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