Prepreg pultrusion heat setting die
By introducing upper and lower heating rollers and a scraper assembly into the thermosetting mold, the problem of residue accumulation during the prepreg pultrusion process was solved, achieving self-cleaning of the mold and ensuring improved product quality and production efficiency.
Patent Information
- Application Number
- CN202520401316.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-10
AI Technical Summary
In the existing thermosetting molds, residues accumulate and adhere at the mold exit during the prepreg pultrusion process, leading to a decline in product quality and affecting production efficiency.
Design a prepreg pultrusion thermosetting die, which uses upper and lower heating rollers and a scraper assembly. The heating rollers are driven to rotate by a rotary motor and are driven by meshing gears, so that the residue rotates from the die exit side. The scraper assembly cleans the roller surface, ensuring that the formed prepreg tape is in contact with the clean roller surface.
It achieves the self-cleaning function of the mold, ensuring product quality and production efficiency, avoiding product scratches, and improving the continuity of the production process.
Smart Images
Figure CN223864398U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a pre-impregnated material processing technical field, especially to a pre-impregnated material pultrusion heat setting mould. BACKGROUND
[0002] In the pultrusion process, the pre-impregnated material is pulled through the heat setting mould, and after heating and extrusion, the pre-impregnated material is formed into a pre-impregnated tape product with a specified thickness.
[0003] The existing heat setting mould adopts an open-close mould structure composed of an upper mould plate and a lower mould plate, the upper mould plate and the lower mould plate are hinged at both sides of the inlet of the mould, when the upper mould plate is closed on the lower mould plate, a pultrusion channel gradually tapering from the inlet to the outlet is formed in the mould. However, during the process of pulling the pre-impregnated material in the mould, burr residues such as broken yarns will be generated, the residues will be accumulated at the narrow outlet of the mould and adhered to the upper and lower mould plates, the accumulated and carbonized residues will scratch the surface of the formed pre-impregnated tape, and then affect the product quality, and stopping the mould to clean will affect the production efficiency of the product. SUMMARY
[0004] The utility model discloses a pre-impregnated material pultrusion heat setting mould, which realizes self-cleaning of the mould and guarantees the quality and production efficiency of the product.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A kind of pre-preg pultrusion hot setting mold, including corresponding setting upper die plate and lower die plate and the first frame body fixed in the two sides of upper die plate and the second frame body fixed in the two sides of lower die plate, the rear end of the first frame body is rotatably connected with the second frame body through rotating shaft, the opening and closing component for driving the rotation of upper die plate around rotating shaft is equipped on the upper die plate, the front end of the upper die plate and the lower die plate is equipped with the upper heating roller rotatably installed on the first frame body and the lower heating roller rotatably installed on the second frame body respectively, the second frame body is installed with the rotating motor for driving the rotation of the lower heating roller, and the rotating shaft part of upper heating roller and lower heating roller is fixed with driven gear and driving gear meshing with each other respectively, the first frame body and the second frame body are equipped with scraper assembly for cleaning the roller surface of upper heating roller and lower heating roller respectively.By setting upper heating roller and lower heating roller in the front end of upper die plate and lower die plate, when upper die plate and lower die plate butt joint, the outlet side of mold is formed between the two heating rollers, the residue formed in pultrusion process adheres to the roller surface of heating roller, rotating motor drives the rotation of lower heating roller at regular time, drives upper heating roller to rotate under the meshing transmission of driven gear and driving gear, so that the roller surface adhered with residue rotates away from the outlet side of mold, makes the pre-preg strip formed all the time contact with the clean roller surface of heating roller, while scraper assembly cleans the roller surface adhered with residue, to ensure the quality and production efficiency of product.
[0007] The roller surface of the upper heating roller is flush with the lower surface of the upper die plate, and the roller surface of the lower heating roller is flush with the upper surface of the lower die plate. The roller surface and the corresponding die plate surface are flush to smoothly transition the pre-preg within the mold.
[0008] The scraper assembly includes an upper scraper fixed on the first frame body and a lower scraper fixed on the second frame body. The upper scraper is located on the side of the upper heating roller close to the upper die plate, and the lower scraper is located on the side of the lower heating roller close to the lower die plate.
[0009] The opening and closing component includes a servo cylinder. The rear end of the second frame body is fixed with a mounting seat, and the front end of the first frame body is fixed with a connecting seat. The motor seat body of the servo cylinder is hinged to the mounting seat through an upper connecting lug, and the output shaft of the servo cylinder is hinged to the connecting seat through a lower connecting lug.
[0010] The upper heating roller and the lower heating roller each have a hollow shaft with an electric heating body inside. A conductive slip ring is installed on the rotating shaft part of the upper heating roller and the lower heating roller. The inner wire of the conductive slip ring penetrates into the hollow shaft and is electrically connected to the electric heating body.
[0011] The conductive slip ring on the upper heating roller and the conductive slip ring on the lower heating roller are arranged on opposite sides.
[0012] The tooth tips of the driven gear and the driving gear have arc-shaped tooth surfaces.
[0013] This utility model has the following beneficial effects:
[0014] This invention features an upper heating roller and a lower heating roller at the front ends of an upper and lower mold, respectively. When the upper and lower molds are joined, the exit side of the mold is formed between the two heating rollers. Residue formed during the pultrusion process of the prepreg adheres to the roller surface of the heating roller. A rotary motor periodically drives the lower heating roller to rotate, which in turn drives the upper heating roller to rotate under the meshing transmission of the driven gear and the driving gear. This causes the roller surface with the residue to rotate away from the exit side of the mold, ensuring that the formed prepreg tape is always in contact with the clean roller surface of the heating roller. At the same time, the scraper assembly cleans the roller surface with the residue, thus ensuring product quality and production efficiency. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a structural schematic diagram of the present invention from another angle;
[0018] Figure 3 This is the front view of the present invention;
[0019] Figure 4 for Figure 2 A magnified view of part A in the image;
[0020] Figure 5 for Figure 3 A cross-sectional view along the BB direction.
[0021] 1. Upper template; 101. First frame; 102. Connecting seat; 103. Mounting hole; 2. Lower template; 201. Second frame; 202. Mounting seat; 3. Rotating shaft; 4. Heating element; 5. Servo cylinder; 6. Upper heating roller; 601. Rotating shaft; 7. Lower heating roller; 701. Hollow mandrel; 8. Rotary motor; 9. Driven gear; 10. Drive gear; 11. Upper scraper; 12. Lower scraper; 13. Conductive slip ring; 14. Anti-rotation rod. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] like Figure 1 and Figure 2 As shown, this utility model provides a prepreg pultrusion thermosetting mold, including an upper mold plate 1 and a lower mold plate 2, a first frame 101 fixed on both sides of the upper mold plate 1, and a second frame 201 fixed on both sides of the lower mold plate 2. The rear end of the first frame 101 is rotatably connected to the second frame 201 via a rotating shaft 3. The upper mold plate 1 is provided with an opening and closing assembly that drives the upper mold plate 1 to rotate around the rotating shaft 3. Figure 5 As shown, multiple heating elements 4 are arranged along the length direction inside the upper template 1 and the lower template 2 to ensure the heating performance of the template; in this embodiment, as... Figure 1As shown, the opening and closing assembly includes a servo cylinder 5. A mounting base 202 is fixed to the rear end of the second frame 201, and a connecting base 102 is fixed to the front end of the first frame 101. The motor base body of the servo cylinder 5 is hinged to the mounting base 202 via an upper connecting lug, and the output shaft of the servo cylinder 5 is hinged to the connecting base 102 via a lower connecting lug. In other embodiments, the opening and closing assembly can also be an axial drive mechanism such as a servo hydraulic cylinder or a pneumatic cylinder; specifically, for example... Figure 2 As shown, the first frame 101 includes two L-shaped plates fixed to both sides of the upper template 1. The vertical section of the L-shaped plate faces downward to form the rear end of the first frame 101. The second frame 201 includes two mounting strips fixed to both sides of the lower template 2, a base plate fixed below the mounting strips, and mold side plates fixed to both sides of the base plate. The rotating shaft 3 passes through the vertical section of the L-shaped plate and is rotatably connected to the outer mold side plate via a bearing seat. The mold side plate extends upward near the rotating shaft 3 to form the rear end of the second frame 201. The bottom of the mounting seat 202 is fixed to the top of the aforementioned extension section, and the connecting seat 102 is fixed to the front side of the horizontal section of the L-shaped plate. The servo electric cylinder 5 drives the output shaft to retract or extend axially, thereby driving the upper template 1 to rotate around the rotating shaft 3, completing the opening and closing operation between it and the lower template 2.
[0027] like Figure 1 As shown, the front ends of the upper template 1 and the lower template 2 are respectively provided with an upper heating roller 6 rotatably mounted on the first frame 101 and a lower heating roller 7 rotatably mounted on the second frame 201. A rotary motor 8 for driving the lower heating roller 7 to rotate is installed on the second frame 201. The rotating shafts 601 of the upper heating roller 6 and the lower heating roller 7 are respectively fixed with a driven gear 9 and a driving gear 10 that mesh with each other. Scraper assemblies for cleaning the roller surfaces of the upper heating roller 6 and the lower heating roller 7 are respectively provided on the first frame 101 and the second frame 201. By setting an upper heating roller 6 and a lower heating roller 7 at the front ends of the upper template 1 and the lower template 2 respectively, when the upper template 1 and the lower template 2 are joined together, the exit side of the mold is formed between the two heating rollers. The residue formed by the prepreg during the pultrusion process adheres to the roller surface of the heating roller. The rotary motor 8 drives the lower heating roller 7 to rotate at a certain angle at regular intervals. Under the meshing transmission of the driven gear 9 and the drive gear 10, the upper heating roller 6 is driven to rotate together, so that the roller surface with the residue is rotated away from the exit side of the mold, so that the formed prepreg tape is always in contact with the clean roller surface of the heating roller. At the same time, the scraper assembly cleans the roller surface with the residue to ensure product quality and production efficiency.
[0028] Further preferred, such as Figure 4As shown, the tips of the driven gear 9 and the driving gear 10 have arc-shaped tooth surfaces. This ensures that the two maintain a good meshing effect during the opening and closing of the mold. At the same time, when the gap between the upper heating roller 6 and the lower heating roller 7 is finely adjusted, the two can still maintain a meshing relationship through the larger tooth contact area of the arc-shaped tooth surfaces.
[0029] In this embodiment, to ensure that the upper heating roller 6 and the lower heating roller 7 have the same heating function as the upper template 1 and the lower template 2, both the upper heating roller 6 and the lower heating roller 7 have a hollow mandrel 701. An electric heating element 4 is built into the hollow mandrel 701. A conductive slip ring 13 is installed on the rotating shaft 601 of the upper heating roller 6 and the lower heating roller 7. The inner wire of the conductive slip ring 13 passes through the hollow mandrel 701 and is electrically connected to the electric heating element 4. The outer wire of the conductive slip ring 13 is connected to an external power source. It is worth noting that, as... Figure 4 As shown, the inner ring of the conductive slip ring 13 is fixedly connected to the rotating shaft 601, and the first frame 101 / second frame 201 is fixed with a stop rod 14 at the corresponding position of the conductive slip ring 13 to restrict the rotation of the outer ring of the conductive slip ring 13.
[0030] In order to allow the prepreg to smoothly transition from the template surface to the roller surface of the heating roller in the mold, the roller surface of the upper heating roller 6 is flush with the lower surface of the upper template 1, and the roller surface of the lower heating roller 7 is flush with the upper surface of the lower template 2.
[0031] like Figure 2 and Figure 5 As shown, the scraper assembly includes an upper scraper 11 fixed to the first frame 101 and a lower scraper 12 fixed to the second frame 201. The upper scraper 11 is located on the side of the upper heating roller 6 near the upper template 1, and the lower scraper 12 is located on the side of the lower heating roller 7 near the lower template 2. Specifically, as... Figure 4 As shown, the first frame 101 and the second frame 201 are respectively provided with mounting holes 103 for the upper scraper 11 and the lower scraper 12 to pass through. The upper scraper 11 passes through the mounting hole 103 of the first frame 101 to the top of the upper template 1. At this time, the blade tip of the upper scraper 11 points forward toward the roller surface of the upper heating roller 6. The upper scraper 11, the first frame 101 and the roller surface of the upper heating roller 6 form an upward-opening upper collection area, which is used to collect the prepreg residue cleaned off by the upper scraper 11 when the upper heating roller 6 rotates. Similarly, the lower scraper 12 passes through the mounting hole 103 of the second frame 201 to the bottom of the lower template 2. At this time, the blade tip of the lower scraper 12 points forward toward the roller surface of the lower heating roller 7. The lower scraper 12, the second frame 201 and the roller surface of the lower heating roller 7 form a downward-opening lower collection area, which is used to collect the prepreg residue cleaned off by the lower scraper 12 when the lower heating roller 7 rotates.
[0032] To avoid interference problems caused by the conductive slip ring 13 being larger than the heating roller, such as Figure 1 As shown, the conductive slip ring 13 on the upper heating roller 6 and the conductive slip ring 13 on the lower heating roller 7 are arranged on opposite sides.
[0033] When implementing the above technical solution, with the mold in the open state, the prepreg enters from the mold's inlet side and spreads on the lower mold plate 2 and the lower heating roller 7. The drive servo cylinder 5 extends, and the upper mold plate 1 flips downward and covers the lower mold plate 2. At this time, the driven gear 9 meshes with the drive gear 10. Under the traction of the traction mechanism, the prepreg is stretched to form a prepreg strip. Based on the formation time of residues in the prepreg inferred from existing technology, the rotary motor 8 is set by the PLC controller to rotate at a fixed time and angle, for example, rotating 30° every 15 minutes. The rotation direction of the rotary motor 8 is the same as the feeding direction of the prepreg material, so as to ensure that the roller surface it contacts during the continuous molding process is always a smooth roller surface. When the roller surface with residue is rotated to the upper scraper 11 / lower scraper 12, the upper scraper 11 / lower scraper 12 cleans the roller surface of the upper heating roller 6 / lower heating roller 7, thereby realizing the self-cleaning function of the mold. Subsequently, it is only necessary to collect the residue in the upper and lower collection areas, which ensures production efficiency. During the entire processing, the surface of the prepreg material is free of scratches, ensuring product quality.
[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A prepreg pultrusion thermosetting die, comprising an upper die and a lower die, a first frame fixed to both sides of the upper die, and a second frame fixed to both sides of the lower die, wherein the rear end of the first frame is rotatably connected to the second frame via a rotating shaft, and the upper die is provided with an opening and closing assembly for driving the upper die to rotate around the rotating shaft, characterized in that, The upper template and the lower template are respectively provided with an upper heating roller rotatably mounted on a first frame and a lower heating roller rotatably mounted on a second frame. A rotary motor for driving the lower heating roller to rotate is installed on the second frame. A driven gear and a driving gear that mesh with each other are respectively fixed on the rotating shaft of the upper heating roller and the lower heating roller. Scraper assemblies for cleaning the roller surface of the upper heating roller and the roller surface of the lower heating roller are respectively provided on the first frame and the second frame.
2. The prepreg pultrusion heat-setting die according to claim 1, characterized in that, The surface of the upper heating roller is flush with the lower surface of the upper template, and the surface of the lower heating roller is flush with the upper surface of the lower template.
3. The prepreg pultrusion heat-setting die according to claim 1 or 2, characterized in that, The scraper assembly includes an upper scraper fixed on a first frame and a lower scraper fixed on a second frame. The upper scraper is located on the side of the upper heating roller near the upper template, and the lower scraper is located on the side of the lower heating roller near the lower template.
4. The prepreg pultrusion thermosetting die according to claim 1 or 2, characterized in that, The opening and closing assembly includes a servo electric cylinder, a mounting base is fixed to the rear end of the second frame, a connecting base is fixed to the front end of the first frame, the motor base body of the servo electric cylinder is hinged to the mounting base via an upper connecting ear, and the output shaft of the servo electric cylinder is hinged to the connecting base via a lower connecting ear.
5. The prepreg pultrusion thermosetting die according to claim 1 or 2, characterized in that, Both the upper heating roller and the lower heating roller have hollow mandrels, and heating elements are built into the hollow mandrels. Conductive slip rings are installed on the rotating shafts of the upper heating roller and the lower heating roller, and the inner wires of the conductive slip rings pass through the hollow mandrels and are electrically connected to the heating elements.
6. The prepreg pultrusion heat-setting die according to claim 5, characterized in that, The conductive slip rings on the upper heating roller and the lower heating roller are arranged on opposite sides.
7. The prepreg pultrusion thermosetting die according to claim 1 or 2, characterized in that, The tips of the driven gear and the driving gear have arc-shaped tooth surfaces.