Tensioning device for continuous production of thermoplastic fiber reinforced prepreg tape

Abstract

The utility model discloses a tensioning device for continuous thermoplastic fiber reinforced prepreg tape production, which comprises a bottom plate, a fixed sleeve and a prepreg tape body, the upper surface of the bottom plate is provided with a tensioning roller through two groups of tensioning mechanisms, and the outer cambered surface of the fixed sleeve is provided with two groups of trays in a sliding manner; an adjusting assembly used for adjusting the distance between the two trays is arranged on the side face of the fixing sleeve. A fixing assembly used for clamping and fixing the prepreg tape body is arranged on the side face of the fixing sleeve. The fixing assembly comprises driving discs, eccentric columns and pressing plates, the two driving discs are connected to the two ends of the fixing sleeve in a bolted mode, and the distance between the two trays on the outer arc face of the fixing sleeve is adjusted through the adjusting assembly, so that the fixing sleeve is suitable for prepreg tape bodies of different sizes, and the applicability of the whole device is improved; and then the eccentric column is rotated to drive the pressing plate to move, and the prepreg tape body is extruded through the pressing plate, so that the prepreg tape body is wound, and the stability of the whole tensioning device is improved.

Description

Technical Field

[0001] This utility model relates to the field of prepreg technology, specifically a tensioning device for the production of thermoplastic fiber reinforced prepreg. Background Technology

[0002] Continuous thermoplastic fiber reinforced prepreg tape (CFRT unidirectional prepreg tape) is a sheet material made by impregnating parallel unidirectional continuous glass fibers with molten thermoplastic resins (such as PC, PPS, PA, PEEK, etc.) through a melt impregnation process. In the production process of CFRT, fiber tension control is one of the key factors affecting product quality. The prepreg tape needs to have tensile strength and must be connected inside a fixed sleeve without relative rotation. Current solutions involve winding the prepreg tape around the outer arc surface of the fixed sleeve, resulting in unstable connections. Furthermore, existing fixed sleeves can only be used for prepreg tapes of a single size, reducing the applicability of prepreg tape production.

[0003] In the prior art, patent announcement number CN209427803U discloses a tensioning device for glass fiber prepreg tape rolls. The technical solution includes a tray, a fixed tensioning sleeve, three wedge keys, and three keyways. The fixed tensioning sleeve is located at the center of the tray and is cylindrical. Three keyways are distributed on the outer circumference of the fixed tensioning sleeve. Wedge keys are inserted into the three keyways. Each wedge key includes a key on one side and a protruding ridge extending beyond the outer diameter of the fixed tensioning sleeve on the other side. The key is inserted into the keyway.

[0004] The aforementioned patent can only connect prepreg tapes of a single size when in use, which reduces the applicability of the overall tensioning device; therefore, we need to propose a tensioning device for the production of thermoplastic fiber reinforced prepreg tapes. Utility Model Content

[0005] The purpose of this utility model is to provide a tensioning device for the production of heat-resistant plastic fiber reinforced prepreg tape. By adjusting the distance between the two sets of trays on the outer arc surface of the fixed sleeve through the adjustment component, the fixed sleeve can be adapted to prepreg tape bodies of different sizes, thereby improving the applicability of the overall device. Then, by rotating the eccentric column, the pressure plate is moved, and the pressure plate squeezes the prepreg tape body to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tensioning device for producing thermoplastic fiber reinforced prepreg tape, comprising a base plate, a fixed sleeve and a prepreg tape body, wherein tensioning rollers are provided on the upper surface of the base plate through two sets of tensioning mechanisms, and two sets of trays are slidably provided on the outer arc surface of the fixed sleeve;

[0007] The fixed sleeve is provided with an adjustment component on its side for adjusting the distance between the two sets of trays;

[0008] The side of the fixed sleeve is provided with a fixing component for clamping and fixing the prepreg tape body;

[0009] The fixing assembly includes a drive disk, an eccentric column, and a clamping plate. There are two sets of drive disks, which are bolted to both ends of the fixing sleeve. The eccentric column is rotatably disposed inside the fixing sleeve, and the clamping plate is slidably disposed inside the fixing sleeve.

[0010] Preferably, the adjusting component includes adjusting blocks and a lead screw. Two sets of adjusting blocks are provided, and the two sets of adjusting blocks are fixedly installed inside the corresponding trays. The side of the fixed sleeve is provided with adjusting grooves corresponding to the two sets of adjusting blocks. The lead screw is rotatably installed inside the fixed sleeve, and one end of the lead screw passes through a set of drive discs.

[0011] Preferably, the adjusting block is configured as a convex block, the outer arc surface of the lead screw is provided with two sets of threads in opposite directions, the two sets of adjusting blocks are symmetrically sleeved on the outer arc surface of the lead screw, and a cross groove is opened at one end of the lead screw located outside the drive disc.

[0012] Preferably, the clamping plate is symmetrically provided with snap-fit ​​blocks on both sides, and the fixed sleeve has snap-fit ​​grooves inside that correspond to the clamping plate and snap-fit ​​blocks, and the clamping plate and snap-fit ​​blocks are slidably disposed inside the snap-fit ​​grooves.

[0013] Preferably, the fixed sleeve has an eccentric groove corresponding to the eccentric column inside, and the fixed sleeve has an insertion groove corresponding to the snap-fit ​​block inside, and the eccentric groove, insertion groove and snap-fit ​​groove are connected.

[0014] Preferably, one end of the eccentric groove is eccentrically provided with a threaded rod, and the threaded rod is threadedly connected to a set of drive discs, and the eccentric column is located between the prepreg tape body and the eccentric groove.

[0015] Preferably, both sets of drive discs are connected to rotating columns on opposite sides, and the two sets of rotating columns are rotatably mounted on the upper surface of the base plate via two sets of support plates.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention adjusts the distance between the two sets of trays on the outer arc surface of the fixed sleeve by adjusting the component, so that the fixed sleeve can be used for prepreg tape bodies of different sizes, thereby improving the applicability of the overall device. Then, by rotating the eccentric column, the pressure plate is moved, and the pressure plate squeezes the prepreg tape body, thereby winding the prepreg tape body and improving the stability of the overall tensioning device.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded view of the fixing sleeve of this utility model;

[0021] Figure 3 This is a vertical sectional view of the fixing sleeve of this utility model;

[0022] Figure 4 This is a cross-sectional view of the fixing sleeve of this utility model.

[0023] In the diagram: 1. Base plate; 2. Fixed sleeve; 3. Tray; 4. Prepreg tape body; 5. Tensioning roller; 6. Tensioning mechanism; 7. Support plate; 8. Rotating column; 9. Drive disc; 10. Adjusting block; 11. Adjusting groove; 12. Eccentric column; 13. Lead screw; 14. Pressure plate; 15. Snap-fit ​​block; 16. Eccentric groove; 17. Threaded rod; 18. Insertion groove; 19. Snap-fit ​​groove. Detailed Implementation

[0024] 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.

[0025] This utility model provides: a tensioning device for producing heat-resistant plastic fiber reinforced prepreg tape, such as... Figure 1-4 As shown, the device includes a base plate 1, a fixed sleeve 2, and a prepreg tape body 4. Tensioning rollers 5 are mounted on the upper surface of the base plate 1 via two sets of tensioning mechanisms 6. The tensioning mechanisms 6 contain existing tensioning structures such as lead screws, nut seats, adjusting blocks, and elastic elements. The fixed sleeve 2 and tensioning rollers 5 work together to adjust the tension of the prepreg tape. Two sets of trays 3 are slidably mounted on the outer arc surface of the fixed sleeve 2. Rotating columns 8 are connected to opposite sides of the two sets of drive discs 9, and the two sets of rotating columns 8 are rotatably mounted on the upper surface of the base plate 1 via two sets of support plates 7. The fixed sleeve 2 rotates on the upper surface of the base plate 1 via the support plates 7 and rotating columns 8. One set of rotating columns 8 penetrates the support plate 7 and connects to the corresponding drive structure, thereby driving the fixed sleeve 2 to rotate and rewind.

[0026] Preferably, the side of the fixed sleeve 2 is provided with a fixing component for clamping and fixing the prepreg tape body 4; the fixing component includes a drive disk 9, an eccentric column 12 and a pressure plate 14. There are two sets of drive disks 9, which are bolted to both ends of the fixed sleeve 2. The eccentric column 12 is rotatably disposed inside the fixed sleeve 2, and the pressure plate 14 is slidably disposed inside the fixed sleeve 2. The drive disk 9 limits the position of the tray 3, the eccentric column 12 and the pressure plate 14. The eccentric rotation of the eccentric column 12 squeezes the pressure plate 14, thereby pressing the prepreg tape body 4 through the pressure plate 14, thereby improving the simplicity and stability of the connection between the prepreg tape body 4 and the fixed sleeve 2.

[0027] Furthermore, the fixed sleeve 2 is provided with an adjustment assembly on its side for adjusting the distance between the two sets of trays 3; the adjustment assembly includes an adjustment block 10 and a lead screw 13. Two sets of adjustment blocks 10 are provided, and the two sets of adjustment blocks 10 are fixedly installed inside the corresponding trays 3. The fixed sleeve 2 has adjustment grooves 11 on its side corresponding to the two sets of adjustment blocks 10. The lead screw 13 is rotatably installed inside the fixed sleeve 2, and one end of the lead screw 13 passes through a set of drive discs 9. The adjustment block 10 is set as a convex block, and the outer arc surface of the lead screw 13 is provided with two sets of threads in opposite directions. The two sets of adjustment blocks 10 are symmetrically sleeved on the lead screw. The outer arc surface of the screw 13 is provided with a cross groove at one end located outside the drive plate 9. The screw 13 is rotated through the cross groove. The screw 13 drives two sets of adjusting blocks 10 to move in opposite directions or towards each other inside the adjusting groove 11 through two sets of threads with opposite directions on the outer arc surface. The adjusting blocks 10 are set as protrusions to ensure the stability of the two sets of trays 3 during movement and to prevent the two sets of trays 3 from rotating with the screw 13. By adjusting the distance between the two sets of trays 3, trays 3 of different widths can be wound on the outer arc surface of the fixed sleeve 2, and the prepreg tape body 4 is limited by the two sets of trays 3.

[0028] Furthermore, clamping blocks 15 are symmetrically arranged on both sides of the clamping plate 14, and the fixing sleeve 2 has a clamping groove 19 corresponding to the clamping plate 14 and the clamping block 15 inside, and the clamping plate 14 and the clamping block 15 are slidably disposed inside the clamping groove 19; the fixing sleeve 2 has an eccentric groove 16 corresponding to the eccentric column 12 inside, and an insertion groove 18 corresponding to the clamping block 15 inside, and the eccentric groove 16, the insertion groove 18 and the clamping groove 19 are connected. The snap-fit ​​block 15 moves along the inside of the snap-fit ​​groove 19 to ensure the stability of the pressure plate 14 during movement. When the eccentric groove 16 rotates eccentrically, it will move closer to or away from the pressure plate 14. When the eccentric groove 16 approaches and squeezes the pressure plate 14, the pressure plate 14 will move towards the insertion groove 18, thereby squeezing the prepreg tape body 4 inside the insertion groove 18, which facilitates the connection between the prepreg tape body 4 and the fixed sleeve 2, and improves stability.

[0029] Specifically, one end of the eccentric groove 16 is eccentrically provided with a threaded rod 17, and the threaded rod 17 is threadedly connected to a set of drive discs 9. The eccentric column 12 is located between the prepreg body 4 and the eccentric groove 16. By operating the part of the threaded rod 17 that protrudes from the outside of the drive disc 9, the threaded rod 17 is driven to rotate. The rotation of the threaded rod 17 drives the eccentric column 12 to rotate eccentrically. The eccentric column 12 and the threaded rod 17 rotate while making small displacements. The spaces of the eccentric groove 16 and the snap-fit ​​groove 19 are both provided with space to provide space for the eccentric column 12 to move slightly. Thus, the eccentric groove 16 squeezes the snap-fit ​​groove 18, and the snap-fit ​​groove 18 squeezes the prepreg body 4.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensioning device for producing heat-resistant plastic fiber reinforced prepreg tape, characterized in that, include: The base plate (1), the fixed sleeve (2) and the prepreg body (4) are provided with tension rollers (5) on the upper surface of the base plate (1) through two sets of tensioning mechanisms (6), and two sets of trays (3) are slidably provided on the outer arc surface of the fixed sleeve (2). The fixed sleeve (2) is provided with an adjustment component on its side for adjusting the distance between the two sets of trays (3); The side of the fixed sleeve (2) is provided with a fixing component for clamping and fixing the prepreg tape body (4); The fixing assembly includes a drive disk (9), an eccentric column (12), and a clamping plate (14). The drive disk (9) is provided in two sets, and the two sets of drive disks (9) are bolted to both ends of the fixing sleeve (2). The eccentric column (12) is rotatably disposed inside the fixing sleeve (2), and the clamping plate (14) is slidably disposed inside the fixing sleeve (2).

2. The tensioning device for producing a heat-resistant plastic fiber reinforced prepreg tape according to claim 1, characterized in that: The adjustment assembly includes an adjustment block (10) and a lead screw (13). There are two sets of adjustment blocks (10), and the two sets of adjustment blocks (10) are fixedly installed inside the corresponding tray (3). The side of the fixed sleeve (2) is provided with adjustment grooves (11) corresponding to the two sets of adjustment blocks (10). The lead screw (13) is rotatably installed inside the fixed sleeve (2), and one end of the lead screw (13) passes through a set of drive discs (9).

3. The tensioning device for producing heat-resistant plastic fiber reinforced prepreg tape according to claim 2, characterized in that: The adjusting block (10) is configured as a convex block, and the outer arc surface of the lead screw (13) is provided with two sets of threads in opposite directions. The two sets of adjusting blocks (10) are symmetrically sleeved on the outer arc surface of the lead screw (13), and a cross groove is opened at one end of the lead screw (13) located outside the drive disk (9).

4. The tensioning device for producing heat-resistant plastic fiber reinforced prepreg tape according to claim 3, characterized in that: The clamping plate (14) is symmetrically provided with snap-fit ​​blocks (15) on both sides. The fixed sleeve (2) has snap-fit ​​grooves (19) inside that correspond to the clamping plate (14) and snap-fit ​​blocks (15), and the clamping plate (14) and snap-fit ​​blocks (15) are slidably disposed inside the snap-fit ​​grooves (19).

5. The tensioning device for producing a heat-resistant plastic fiber reinforced prepreg tape according to claim 4, characterized in that: The fixed sleeve (2) has an eccentric groove (16) corresponding to the eccentric column (12) inside, and an insertion groove (18) corresponding to the snap-fit ​​block (15) inside, and the eccentric groove (16), insertion groove (18) and snap-fit ​​groove (19) are connected.

6. The tensioning device for producing a heat-resistant plastic fiber reinforced prepreg tape according to claim 5, characterized in that: One end of the eccentric groove (16) is eccentrically provided with a threaded rod (17), and the threaded rod (17) is threadedly connected to a set of drive discs (9), and the eccentric column (12) is located between the prepreg body (4) and the eccentric groove (16).

7. The tensioning device for producing a heat-resistant plastic fiber reinforced prepreg tape according to claim 1, characterized in that: Both sets of drive discs (9) are connected to rotating columns (8) on opposite sides, and the two sets of rotating columns (8) are rotatably mounted on the upper surface of the base plate (1) via two sets of support plates (7).

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