CN215750877U - Compression molding device for continuous fiber reinforced composite material - Google Patents
Compression molding device for continuous fiber reinforced composite material Download PDFInfo
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- CN215750877U CN215750877U CN202022497874.6U CN202022497874U CN215750877U CN 215750877 U CN215750877 U CN 215750877U CN 202022497874 U CN202022497874 U CN 202022497874U CN 215750877 U CN215750877 U CN 215750877U
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Abstract
A pultrusion and compression molding device for continuous fiber reinforced composite materials comprises a creel, a pre-soaking tank, a pre-forming pultrusion die, a movable die assembly, a traction device and a cutting device which are arranged in sequence; the creel is used for placing the fiber winding drum, and the fiber bundles on the fiber winding drum are conveyed from the pre-soaking tank, the pre-forming pultrusion die, the movable die assembly, the traction device and the cutting device in sequence to finish the processing. The utility model realizes continuous production by arranging the devices in sequence and utilizing the movable die assembly, has convenient operation, stability, reliability, high automation degree and less leftover materials, greatly reduces the production cost of the composite material special-shaped piece, and is economical and practical.
Description
Technical Field
The utility model relates to the technical field of composite material manufacturing, in particular to a pultrusion and compression molding device for a continuous fiber reinforced composite material.
Background
The composite material pultrusion device with mature technology exists in the market at present, and the main part of the composite material pultrusion device comprises a creel, a gum dipping tank, a pultrusion die, a traction device and a cutting device. The device can only generate products with single and fixed cross section shapes generally, and products with cross section shapes changing along with the traction direction can not be manufactured.
In view of the above disadvantages of pultrusion devices, people generally adopt compression molding devices to replace pultrusion devices to manufacture special-shaped products with complex shapes. If the layer-spreading method is used, the presoaked cloth is spread to the die cavity, and then the die cavity is closed, pressurized and heated to be solidified and formed; or the bundled prepreg cloth is put into a die cavity, and then the die cavity is closed, pressurized and heated to be solidified and molded. The process methods have the disadvantages that the cost of the prepreg cloth is high, manual cutting, bundling and laying are needed, each forming period needs long die cleaning and laying time, and in addition, the subsequent process of cutting off leftover materials is needed, wherein the higher leftover materials cause more material waste, and the production efficiency is low, the labor is more and the production cost is high due to the above reasons.
Disclosure of Invention
The utility model aims to provide a pultrusion molding device for a continuous fiber reinforced composite material.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a pultrusion and compression molding device for continuous fiber reinforced composite materials comprises a creel, a pre-soaking tank, a pre-forming pultrusion die, a movable die assembly, a traction device and a cutting device which are arranged in sequence;
the creel is used for placing the fiber winding drum, and the fiber bundles on the fiber winding drum are conveyed from the pre-soaking tank, the pre-forming pultrusion die, the movable die assembly, the traction device and the cutting device in sequence to finish the processing.
The pre-soaking tank comprises a groove and a support frame, the groove is arranged on the support frame, a cavity is formed in the side wall of the groove, heat transfer fluid is filled in the cavity, a heater is arranged on the bottom surface and/or the side surface of the groove, a plurality of round rollers are arranged in the groove, resin is filled in the groove, and the resin surface is higher than the round rollers.
The preforming pultrusion die comprises a shell, a heater and a forming flow channel, wherein the forming flow channel is arranged in the shell, a flow channel inlet communicated with the forming flow channel is arranged on one side of the shell, the heater is provided with a plurality of flow channels and is respectively arranged on the outer surface of the shell, the flow channel inlet is arranged into a horn-shaped channel which is reduced from big to small, and the forming flow channel is of a structure which is gradually changed from big to small from an inlet end to an outlet end.
The movable die assembly is arranged in the rotary die locking frame, the left side and the right side of the traction direction of the fiber bundle are respectively provided with the rotary die locking frame, the movable die assembly comprises a movable die and a locking template, an upper hydraulic cylinder is arranged at the top of the rotary die locking frame, the locking template is connected with the upper hydraulic cylinder, and a cavity runner is arranged on the movable die.
The rotary die locking frame comprises a die locking frame, a lower die locking frame, a moving seat, a rotary motor and a guide rail, wherein the guide rail is arranged along the traction direction of a fiber bundle, the moving seat is arranged on the guide rail and can move along the guide rail, the rotary motor is arranged on the die locking frame, a rotating shaft is rotatably arranged on the moving seat, the rotating shaft penetrates through a driving shaft connected with the rotary motor from the lower die locking frame, and the lower die locking frame is connected with the rotating shaft.
The upper die frame is provided with a pull rod, the bottom of the lower die frame is provided with a lower hydraulic cylinder, and a driving shaft of the lower hydraulic cylinder is connected with a clamping plate for fastening the pull rod.
Two movable die assemblies are arranged in the rotary die locking frame and are respectively arranged on two sides of the rotating shaft.
The utility model has the advantages of convenient debugging, stability, reliability, high automation degree, high production efficiency and less leftover materials, greatly reduces the production cost of the composite material special-shaped part, and is economical and practical.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a preform pultrusion die of the present invention;
FIG. 3 is a schematic view of the rotary locking die holder and the movable pressing die of the present invention;
FIG. 3A is a top view of the moving die assembly of the present invention;
FIG. 3B is a schematic view of the left moving stamper rotated 90 degrees clockwise;
FIG. 3C is a schematic view of the left moving die again gripping the preform;
fig. 4A, 4B, 4C, and 4D are schematic views of different profiles processed by the present invention.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in figures 1-4, the utility model discloses a pultrusion molding device for continuous fiber reinforced composite materials, which comprises a creel 1, a pre-dipping tank 2, a pre-forming pultrusion die 3, a movable die assembly 4, a traction device 5 and a cutting device 6 which are arranged in sequence, wherein the creel is used for placing a fiber reel, and fiber bundles on the fiber reel are conveyed from the pre-dipping tank, the pre-forming pultrusion die, the movable die assembly, the traction device and the cutting device in sequence to finish molding processing.
The creel is an existing device on which the fiber reels 101 are placed and the fiber bundles 102 are automatically pulled out during pultrusion.
The pre-soaking tank 2 comprises a groove 201 and a support frame, the groove is arranged on the support frame, a cavity 204 is formed in the side wall of the groove 201, heat transfer fluid is filled in the cavity 204, heaters are arranged on the bottom surface 202 and the side surface 203 of the groove 201, or the heaters are arranged only on the bottom surface, or the heaters are arranged only on the side surface, a plurality of round rollers 205 are arranged in the groove 201, resin is filled in the groove, and the resin surface is higher than the round rollers. The heat transfer fluid in the cavity is heated by the heater, and the temperature of the prepreg tank can be adjusted according to the process requirement, so that the temperature of the prepreg tank is more uniform and stable. The fiber bundle 102 enters under several round rollers 205 where it is fully impregnated with resin.
The preforming pultrusion die 3 comprises a shell, a heater 301 and a forming flow channel 303, wherein the forming flow channel 303 is arranged in the shell, a flow channel inlet 302 communicated with the forming flow channel 303 is arranged on one side of the shell, the heater 301 is provided with a plurality of flow channels which are respectively arranged on the outer surface of the shell, the flow channel inlet 302 is arranged into a horn-shaped channel which is gradually reduced from big to small, and the forming flow channel is of a structure which is gradually reduced from big to small from an inlet end to an outlet end.
By providing the inlet of the flow channel as a tapered trumpet-shaped inlet 302, the fiber bundle 102 is prevented from being scraped off, and more resin coated on the fiber bundle is drawn into the movable die assembly. The trumpet-shaped runner inlet 302 is followed by a runner 303 with smaller taper, the fiber bundle and the resin adhered to the fiber bundle are drawn into the runner, and the fiber bundle is extruded to be very compact due to the fact that the cross section area of the molding runner 303 is smaller and smaller, and the fiber bundle is fully pre-soaked. Under a certain temperature and a certain pressure, the fiber bundles and the cross-sectional shape of the resin are constantly drawn into a preform 304, the resin of which is not cured at all or is only partially cured.
The movable die assembly 4 is arranged in the rotary die locking frame, the rotary die locking frame is respectively arranged on the left side and the right side of the traction direction of the fiber bundle, the movable die assembly 4 comprises a movable die 44 and a die locking plate 414, an upper hydraulic oil cylinder 410 is arranged at the top of the rotary die locking frame, the die locking plate 414 is connected with the upper hydraulic oil cylinder 410, and a cavity flow channel is arranged on the movable die 44.
The rotary die locking frame comprises an upper die locking frame 413, a lower die locking frame 415, a moving seat 42, a rotary motor 417 and a guide rail 41, wherein the guide rail is arranged along the traction direction of a fiber bundle, the moving seat 42 is arranged on the guide rail 41 and can move along the guide rail, the rotary motor 417 is arranged on the upper die locking frame 413, a rotating shaft 418 is rotatably arranged on the moving seat 42, the rotating shaft 418 penetrates through a driving shaft connected with the rotary motor 417 from the lower die locking frame 415, the lower die locking frame 415 is connected with the rotating shaft 418, and the rotating shaft can drive the upper die locking frame and the lower die locking frame to rotate relative to the moving seat so as to change the direction of the movable die. The moving seat can be connected with a corresponding motor or an oil cylinder to enable the moving seat to slide along the guide rail.
A pull rod 411 is arranged on the upper die frame 413, a lower hydraulic cylinder 412 is arranged at the bottom of the lower die frame 415, and a clamping plate 416 for fastening the pull rod 411 is arranged on a driving shaft of the lower hydraulic cylinder 412. Two movable die assemblies are arranged in the rotary die locking frame and are respectively arranged on two sides of the rotating shaft. The pull rod is an air cylinder rod capable of extending and retracting, and can extend out to be connected with the lower die locking frame and retract.
The explanation will be given by taking as an example a movable die and a locking die holder disposed on the left side in the drawing direction.
The left guide rail 41 is fixed and the left moving seat 42 is driven by a motor or a hydraulic oil cylinder to perform precise longitudinal movement. The left moving die 44 is near the pre-forming pultrusion die 3, and the upper hydraulic oil cylinder 410 pushes the locking plate 414 to move downwards to close the locking plate and the moving die 44. The pull rod 411 moves downwards and is inserted into the lower mold locking frame 415 from the upper mold locking frame 413, the lower hydraulic cylinder drives the clamping plate 416 to move horizontally to clamp the head of the pull rod 411, and the lower hydraulic cylinder 410 is connected with a high-pressure oil pressure clamping plate to lift the mold locking force. The locking die plate and the moving die are closed and fastened by pressurizing with the upper hydraulic cylinder 410, and the preform 304 is compressed by high pressure, moves in the drawing direction while being hot-press molded, and is cured and molded near the drawing device 5 at the moving speed consistent with the longitudinal drawing speed, as shown in fig. 3A.
The lower hydraulic cylinder 412 is depressurized, the clamping plate 416 is retracted to the original position, and the pull rod 411 is retracted upwards to the upper locking die carrier 413. The upper hydraulic cylinder 410 drives the mold clamping plate to move upwards to separate from the movable mold, so that the movable mold 44 is opened, and the ejector pins in the movable mold 44 eject the product, thereby obtaining the special-shaped part 49.
Under the action of the rotating motor 417, the upper locking die holder 413 and the lower locking die holder 415 drive the left moving die 44 to rotate together by 90 degrees clockwise, and the left moving die is reversely and rapidly returned to the upstream along the longitudinal guide rail after avoiding the right moving die, as shown in fig. 3B. After reaching the vicinity of the preform pultrusion die, the upper and lower dies 413, 415 carry the left moving die 44 to rotate further clockwise by 90 degrees, as shown in fig. 3C, and the preform 304 is clamped again by the clamping, and then the aforementioned actions are repeated.
The movement of the moving die on the right is similar to that of the moving die 44 on the left, with the alternate movements in turn ensuring that the preform is continuously drawn, clamped, hot pressed, solidified into the profile 49. The profile members 49 may be of equal or approximately equal cross-sectional area.
The traction device 5 is arranged at the downstream of the movable die assembly 4 and mainly comprises a pair of high-temperature resistant belts 501, a driving motor and an adjusting structure. The specific structure of the driving motor and the adjusting mechanism is well known in the art and will not be described in detail herein. The device provides power to pull the profile member 49 over.
The cutting device 6, which is arranged downstream of the traction device 5, is mainly composed of a cutting wheel 601, a position sensing plate 602 and a cutting wheel feeding mechanism. When the profile member is drawn to touch the position sensing plate 602, the cutting wheel 601 is advanced rapidly and the profile member is cut. The cutting wheel 601 automatically returns to the original position and stops rotating immediately after the special-shaped piece is cut off.
Although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements, and the like can be made in the technical solutions of the foregoing embodiments or in some of the technical features of the foregoing embodiments, but those modifications, equivalents, improvements, and the like are all within the spirit and principle of the present invention.
Claims (7)
1. A compression molding device for continuous fiber reinforced composite materials is characterized by comprising a creel, a pre-soaking tank, a pre-molding pultrusion die, a movable die assembly, a traction device and a cutting device which are sequentially arranged;
the creel is used for placing the fiber winding drum, and the fiber bundles on the fiber winding drum are conveyed from the pre-soaking tank, the pre-forming pultrusion die, the movable die assembly, the traction device and the cutting device in sequence to finish the processing.
2. A compression molding apparatus for continuous fiber reinforced composite material according to claim 1, wherein the pre-dip tank includes a groove and a support frame, the groove is mounted on the support frame, a cavity is provided in the side wall of the groove, the cavity is filled with heat transfer fluid, a heater is mounted on the bottom and/or side of the groove, a plurality of round rollers are provided in the groove, the groove is filled with resin, and the resin surface is higher than the round rollers.
3. The compression molding apparatus for continuous fiber reinforced composite material of claim 2, wherein the pre-molding pultrusion mold comprises a housing, a heater and a molding flow channel, the molding flow channel is arranged in the housing, a flow channel inlet communicated with the molding flow channel is arranged at one side of the housing, the heater is provided with a plurality of heaters and respectively arranged at the outer surface of the housing, the flow channel inlet is arranged as a passage from large to small, and the molding flow channel is of a structure gradually changing from large to small from an inlet end to an outlet end.
4. A compression molding apparatus for continuous fiber reinforced composite material as claimed in claim 3, wherein the movable mold assembly is installed in a rotary mold locking frame, one rotary mold locking frame is installed on each of the left and right sides of the drawing direction of the fiber bundle, the movable mold assembly includes a movable mold and a mold locking plate, an upper hydraulic cylinder is installed on the top of the rotary mold locking frame, the mold locking plate is connected to the upper hydraulic cylinder, and a cavity flow passage is provided on the movable mold.
5. A compression molding apparatus for continuous fiber reinforced composite material according to claim 4, wherein the rotary mold locking frame includes a upper mold locking frame, a lower mold locking frame, a movable base, a rotary motor, and a guide rail, the guide rail is arranged along a drawing direction of the fiber bundle, the movable base is mounted on the guide rail and movable along the guide rail, the rotary motor is mounted on the upper mold locking frame, the movable base is rotatably mounted with a rotary shaft, the rotary shaft passes through the lower mold locking frame and is connected with a driving shaft of the rotary motor, and the lower mold locking frame is connected with the rotary shaft.
6. A compression moulding apparatus for continuous fibre reinforced composite material as claimed in claim 5, wherein the upper locking mould frame is provided with a pull rod, the bottom of the lower locking mould frame is provided with a lower hydraulic cylinder, and a driving shaft of the lower hydraulic cylinder is provided with a clamping plate for fastening the pull rod.
7. A compression molding apparatus for continuous fiber reinforced composite material as claimed in claim 6, wherein two moving mold assemblies are provided in the rotary molder lock and are disposed on both sides of the rotation axis, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022497874.6U CN215750877U (en) | 2020-11-02 | 2020-11-02 | Compression molding device for continuous fiber reinforced composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022497874.6U CN215750877U (en) | 2020-11-02 | 2020-11-02 | Compression molding device for continuous fiber reinforced composite material |
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| Publication Number | Publication Date |
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| CN215750877U true CN215750877U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022497874.6U Active CN215750877U (en) | 2020-11-02 | 2020-11-02 | Compression molding device for continuous fiber reinforced composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112976611A (en) * | 2021-03-06 | 2021-06-18 | 正碳科技(上海)有限公司 | Automatic production line of large-width carbon fiber cloth |
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2020
- 2020-11-02 CN CN202022497874.6U patent/CN215750877U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112976611A (en) * | 2021-03-06 | 2021-06-18 | 正碳科技(上海)有限公司 | Automatic production line of large-width carbon fiber cloth |
| CN112976611B (en) * | 2021-03-06 | 2022-05-27 | 韩塑希埃孚黑色科技(上海)有限公司 | Automatic production line of large-width carbon fiber cloth |
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