CN219007096U - Die for molding high-performance thermoplastic composite material thick plate - Google Patents
Die for molding high-performance thermoplastic composite material thick plate Download PDFInfo
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- CN219007096U CN219007096U CN202222187666.5U CN202222187666U CN219007096U CN 219007096 U CN219007096 U CN 219007096U CN 202222187666 U CN202222187666 U CN 202222187666U CN 219007096 U CN219007096 U CN 219007096U
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Abstract
The utility model relates to the technical field of high-performance composite material preparation, and discloses a die suitable for forming a high-performance thermoplastic composite material thick plate, which comprises an upper die plate, a frame and a lower die plate, wherein the frame is positioned on the inner sides of the upper die plate and the lower die plate and is matched with the upper die plate and the lower die plate, top thread holes are uniformly formed in the upper die plate, the frame and the lower die plate, first temperature detection holes are formed in the upper die plate and the lower die plate, and second temperature detection holes are formed in the frame. The mold suitable for molding the high-performance thermoplastic composite material thick plate can ensure the stability of molding process parameters through the temperature of the temperature detection Kong Jiance composite material in the molding process, and is beneficial to improving the molding quality of the composite material; the temperature detection holes which are not communicated with the cavity can ensure that the overflow is generated by applying larger molding pressure, and is beneficial to exhausting air inclusion in the molding process of the composite material.
Description
Technical Field
The utility model relates to the technical field of high-performance composite material preparation, in particular to a die for forming a high-performance thermoplastic composite material thick plate.
Background
The thermoplastic resin-based composite material has the advantages of higher toughness, damage tolerance, shock resistance, infinite prepreg storage period, short molding period, high production efficiency, secondary molding, welding, recycling and reprocessing and the like, and becomes a hot spot for research in the technical field of composite materials in recent years. In particular to a fiber reinforced thermoplastic resin matrix composite material which has a series of excellent characteristics of high strength, high modulus, low density and the like and is widely applied to the fields of aerospace, automobiles, buildings, protection, sports equipment and the like.
The manufacturing technology of the thermoplastic composite material mainly comprises compression molding, stamping molding, autoclave molding, automatic laying and winding molding. The compression molding process is a molding method which is widely applied and flexible in form in the production of composite materials. The method is that the prepared prepreg is put into a mould and is solidified and molded by heating and pressurizing. The compression molding process has higher production efficiency, is convenient for realizing specialized and automatic production, can effectively reduce the manufacturing cost, and the produced product has higher dimensional accuracy and high sample surface finish without secondary modification. In the preparation of thermoplastic composites using compression molding processes, when molding pressure is applied, gradient pressure will be generated inside the thermoplastic composite laminate, with a larger center pressure and a smaller edge pressure, which will result in lateral flow of the resin melt. Because the fiber is inextensible, the composite material body cannot flow strongly along the fiber direction, only part of resin melt can be extruded along the fiber direction, and because the molding pressure of the thermoplastic composite material is generally higher, the viscosity of the resin melt is higher, the pressure gradient perpendicular to the fiber direction can cause the composite material body to deform seriously, especially when the molding pressure of a composite material thick plate is lower, the resin in the composite material cannot flow sufficiently, so that air mixed in the prepreg cannot be discharged, and the defects of layering, pore, resin enrichment, fiber poor glue and the like of the composite material are caused; when the forming pressure is high, the resin and the fiber in the composite material can flow in a large range under the high pressure, so that the composite material laminated plate overflows and flanging are carried out, and the fiber volume fraction of the composite material laminated plate is reduced, the thickness is difficult to control, and the laminated plate is deformed and warped. The thermoplastic composite material is formed by paving and compression molding of the prepreg, the surface of the thermoplastic prepreg is not sticky unlike the thermosetting prepreg, and a large gap exists after paving, so that the thickness of the preform is far beyond the thickness of the formed laminated plate, and the composite material is more prone to overflow and flanging in the forming process. Therefore, for molding of thermoplastic composite thick plates, it is necessary to design a mold suitable for molding thick plates.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a die for forming a high-performance thermoplastic composite material thick plate, which has the advantages of maintaining larger forming pressure in the process of forming the thermoplastic composite material, effectively reducing flash and improving the forming quality of the composite material, and solves the problems in the prior art.
The utility model provides the following technical scheme: the utility model provides an with be applicable to fashioned mould of high performance thermoplastic composite thick plate, includes cope match-plate pattern, frame and lower bolster, the frame is located the inboard of cope match-plate pattern and lower bolster, just frame and cope match-plate pattern and lower bolster homogeneous phase adaptation, evenly be equipped with the top silk hole on cope match-plate pattern, frame and the lower bolster, be equipped with on cope match-plate pattern and the lower bolster and visit warm hole one, be equipped with on the frame and visit warm hole two, survey Wen Kongyi and visit warm hole two and all not communicate with the die cavity of mould.
Preferably, the top and the bottom of the frame are both provided with grooves, the middle part of the bottom of the upper template is provided with an upper boss matched with the grooves, the middle part of the top of the lower template is provided with a lower boss matched with the grooves, the height of the lower boss is smaller than that of the upper boss, the height of the lower boss is less than or equal to 5mm and less than or equal to h1 and less than or equal to 8mm, the height of the upper boss is less than or equal to 8mm and less than or equal to h2 and less than or equal to 15mm, and the thickness of the frame is the sum of the heights of the upper boss, the lower boss and the thick plate.
Preferably, the draft angle of the groove is more than or equal to 3 degrees and less than or equal to 10 degrees.
Preferably, the depth of the probe Wen Kongyi is one half of the width of the die, the distance between the probe Wen Konger and the die cavity is 3-5mm, the diameters of the probe Wen Kongyi and the second temperature detecting hole are 3mm and less than 6mm, the preferable setting position of the probe Wen Kongyi is the middle part of the long side of the single side of the upper die plate or the lower die plate, and the preferable setting position of the probe Wen Konger is the middle part of the short side of the frame.
Preferably, the number of the jackscrew holes on the upper template, the frame and the lower template is four, the positions of the jackscrew holes on the upper template and the jackscrew holes on the frame are not coincident, and the diameters of the jackscrew holes on the upper template and the frame are greater than or equal to M8.
Compared with the prior art, the utility model has the following beneficial effects:
1. the mold suitable for molding the high-performance thermoplastic composite material thick plate can ensure the stability of molding process parameters through the temperature of the temperature detection Kong Jiance composite material in the molding process, and is beneficial to improving the molding quality of the composite material; the temperature detection holes which are not communicated with the cavity can ensure that the overflow is generated by applying larger molding pressure, and is beneficial to exhausting air inclusion in the molding process of the composite material.
2. The die for forming the high-performance thermoplastic composite material thick plate obviously improves the forming quality of the composite material, can effectively control the fiber volume fraction of the composite material and the thickness of a composite material laminate in the forming process, and the die cavity with larger depth formed by the upper die plate, the lower die plate and the frame can effectively prevent the composite material from flanging in the forming process.
Drawings
FIG. 1 is a schematic diagram of the front of the structure of the present utility model;
fig. 2 is a schematic view of a frame of the structure of the present utility model.
In the figure: 1. an upper template; 2. a frame; 3. a lower template; 4. a top thread hole; 5. a probe Wen Kongyi; 6. a lower boss; 7. a groove; 8. and Wen Konger.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 and 2, a mold suitable for molding a high-performance thermoplastic composite thick plate comprises an upper mold plate 1, a frame 2 and a lower mold plate 3, wherein the frame 2 is positioned on the inner sides of the upper mold plate 1 and the lower mold plate 3, the frame 2 is matched with the upper mold plate 1 and the lower mold plate 3, a cavity with a larger depth formed by the upper mold plate, the lower mold plate and the frame can effectively prevent the composite material from flanging in the molding process, the height of the mold frame is adjusted, the molding thickness of the composite material can be accurately controlled, the upper mold plate 1, the frame 2 and the lower mold plate 3 are uniformly provided with a top wire hole 4, the upper mold plate 1 and the lower mold plate 3 are provided with a first temperature detecting hole 5, the frame 2 is provided with a second temperature detecting hole 8, the first temperature detecting hole Wen Kongyi and the second temperature detecting hole 8 are not communicated with the cavity of the mold, and a coupling line is placed in the cavity of the first temperature detecting hole 5 and the second temperature detecting hole 8 through the arrangement of the frame 2, so that the temperature of the composite material can be conveniently monitored in the molding process is ensured, the stability of molding process parameters is facilitated, the quality is improved, the composite material can be favorably molded, and the large pressure of the composite material can be discharged in the molding process is ensured, and the molding air is favorably is ensured.
The top and the bottom of frame 2 all are equipped with recess 7, the middle part of cope match-plate pattern 1 bottom is equipped with the last boss with recess 7 adaptation, the middle part at lower bolster 3 top is equipped with the lower boss 6 with recess 7 adaptation, and the height of boss 6 is less than the height of boss, the height of boss 6 is less than or equal to 5mm and is less than or equal to 8mm down, the height of boss is 8mm and is less than or equal to h2 and is less than or equal to 15mm, the thickness of frame 2 is the sum of boss, boss and thick plate height down, through the thickness of adjustment frame 2, the thickness of control combined material that can be accurate improves the practicality of this mould.
The draft angle of the groove 7 is more than or equal to 3 degrees and less than or equal to 10 degrees, and the flanging phenomenon is reduced under the condition that the die can be opened and closed smoothly.
The depth of the probe Wen Kongyi is one half of the width of the die, the distance between the probe Wen Konger 8 and the die cavity is 3-5mm, the diameters of the probe Wen Kongyi and the second probe hole 8 are larger than 3mm and smaller than 6mm, the preferable setting position of the probe Wen Kongyi 5 is the middle part of the long side of the single side of the upper die plate 1 or the lower die plate 3, and the preferable setting position of the probe Wen Konger 8 is the middle part of the short side of the frame 2.
The number of the jackscrew holes 4 on the upper template 1, the frame 2 and the lower template 3 is four, the positions of the jackscrew holes 4 on the upper template 1 and the jackscrew holes 4 on the frame 2 are not coincident, and the diameters of the jackscrew holes on the upper template 1 and the frame 2 are more than or equal to M8 so as to prevent the jackscrew holes 4 from deforming in the using process.
The thermoplastic resin matrix of the high-performance thermoplastic composite material comprises but is not limited to thermoplastic resin matrixes such as polyether ether ketone, polyarylether ketone, polyphenylene sulfide and the like, and preferably the thermoplastic composite material is carbon fiber reinforced polyarylether ketone, carbon fiber reinforced polyphenylene sulfide, glass fiber reinforced polyarylether ketone and glass fiber reinforced polyphenylene sulfide.
Working principle: the using steps of the die are as follows: (1) tool cleaning: and (3) soaking degreasing cloth with a cleaning agent, wiping an upper template, a lower template, a frame and jackscrew holes of the die, and ensuring that the surface of the die is free of greasy dirt and impurities.
(2) And (3) die installation: the lower template is firstly placed on the platform, then the die frame is placed on the lower template, then the composite material preform to be formed is placed in the die frame, and finally the upper template boss of the die is downward like the die frame.
(3) And (3) forming a composite material: and placing the assembled die on a hot table of a hot press, and executing a forming process of the composite material.
Example 1: a laminated board with the dimension specification of 240mm x 180mm x 5mm and the layering mode of [45 DEG/0 DEG/45 DEG/90 DEG ]4S is prepared by adopting a carbon fiber reinforced PAEK thermoplastic prepreg with the width of 300mm, the prepreg is cut according to the size of the laminated board, and the prepreg is paved into a prefabricated body.
Firstly, placing a lower template on a platform, then placing a frame on the lower template, then placing a prefabricated body into the frame of a mould, and finally placing a boss of an upper template of the mould into the frame downwards.
Placing the assembled die on a hot table of a hot press, starting the hot press, and executing a forming process of the carbon fiber reinforced PAEK thermoplastic composite material: prepressing at 300 ℃,0.5MPa and 30min; pressurizing at 360 ℃,2MPa and 60min.
By the method, the carbon fiber reinforced thermoplastic composite material laminated plate with the size meeting the requirement can be obtained.
Example 2: a glass fiber reinforced PAEK thermoplastic prepreg with the width of 100mm is adopted to prepare a laminated plate with the dimension specification of 240mm 180mm 8mm and the layering mode of [45 DEG/0 DEG/45 DEG/90 DEG ]4S, the prepreg is cut according to the size of the laminated plate, and the prepreg is paved into a prefabricated body.
Firstly, placing a lower template on a platform, then placing a frame on the lower template, then placing a prefabricated body into the frame of a mould, and finally placing a boss of an upper template of the mould into the frame downwards.
Placing the assembled mould on a hot table of a hot press, starting the hot press, and executing a forming process of the glass fiber reinforced PAEK thermoplastic composite material: prepressing at 300 ℃,1MPa and 30min; pressurizing at 380 ℃ and 3MPa for 60min.
By the method, the glass fiber reinforced thermoplastic composite laminated plate with the size meeting the requirement can be obtained.
Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a with mould that is applicable to high performance thermoplastic composite thick plate shaping, includes cope match-plate pattern (1), frame (2) and lower bolster (3), its characterized in that: the frame (2) is located the inboard of cope match-plate pattern (1) and lower bolster (3), just frame (2) and cope match-plate pattern (1) and lower bolster (3) homophase adaptation, evenly be equipped with on cope match-plate pattern (1), frame (2) and lower bolster (3) top silk hole (4), be equipped with on cope match-plate pattern (1) and lower bolster (3) and visit warm hole one (5), be equipped with on frame (2) and visit warm hole two (8), survey Wen Kongyi (5) and visit warm hole two (8) and all not communicate with the die cavity of mould.
2. A mold for molding a high performance thermoplastic composite plank as defined in claim 1, wherein: the top and the bottom of frame (2) all are equipped with recess (7), the middle part of cope match-plate pattern (1) bottom is equipped with the last boss with recess (7) adaptation, the middle part at lower bolster (3) top is equipped with boss (6) down with recess (7) adaptation, just the height of boss (6) is less than the height of boss down, the height of boss (6) is 5mm and is less than or equal to h1 and is less than or equal to 8mm down, the height of boss is 8mm and is less than or equal to h2 and is less than or equal to 15mm, the thickness of frame (2) is boss, boss and thick plate height sum down.
3. A mold for molding a high performance thermoplastic composite plank as defined in claim 2, wherein: the draft angle of the groove (7) is more than or equal to 3 degrees and less than or equal to 10 degrees.
4. A mold for molding a high performance thermoplastic composite plank as defined in claim 1, wherein: the depth of the probe Wen Kongyi (5) is one half of the width of the die, the distance between the probe Wen Konger (8) and the die cavity is 3-5mm, the diameters of the probe Wen Kongyi (5) and the second probe temperature hole (8) are larger than 3mm and smaller than 6mm, the setting position of the probe Wen Kongyi (5) is the middle part of the single-side long side of the upper die plate (1) or the lower die plate (3), and the setting position of the probe Wen Konger (8) is the middle part of the short side of the frame (2).
5. A mold for molding a high performance thermoplastic composite plank as defined in claim 1, wherein: the top silk hole (4) on cope match-plate pattern (1), frame (2) and lower bolster (3) have four, just top silk hole (4) on cope match-plate pattern (1) do not coincide with the position of top silk hole (4) on frame (2), the diameter of top silk hole (4) on cope match-plate pattern (1) and frame (2) is greater than or equal to M8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222187666.5U CN219007096U (en) | 2022-08-19 | 2022-08-19 | Die for molding high-performance thermoplastic composite material thick plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222187666.5U CN219007096U (en) | 2022-08-19 | 2022-08-19 | Die for molding high-performance thermoplastic composite material thick plate |
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| Publication Number | Publication Date |
|---|---|
| CN219007096U true CN219007096U (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222187666.5U Active CN219007096U (en) | 2022-08-19 | 2022-08-19 | Die for molding high-performance thermoplastic composite material thick plate |
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| CN (1) | CN219007096U (en) |
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2022
- 2022-08-19 CN CN202222187666.5U patent/CN219007096U/en active Active
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