CN218197064U - Flat press for thermoplastic composite material - Google Patents
Flat press for thermoplastic composite material Download PDFInfo
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- CN218197064U CN218197064U CN202222173442.9U CN202222173442U CN218197064U CN 218197064 U CN218197064 U CN 218197064U CN 202222173442 U CN202222173442 U CN 202222173442U CN 218197064 U CN218197064 U CN 218197064U
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Abstract
The utility model provides a flat press for thermoplastic composite, which comprises an upper heat insulation plate, an upper electromagnetic induction heating coil, a male die, a female die, a lower electromagnetic induction heating coil and a lower heat insulation plate which are arranged in sequence from top to bottom; at least 1 through hole is formed in one side of each of the male die and the female die, the through hole in the male die penetrates through the male die along the length direction of the male die, and the through hole in the female die penetrates through the female die along the length direction of the female die; the plate press for the thermoplastic composite material is in the same cold and hot mode, can realize heating and cooling modes for pressurization simultaneously, further effectively solves the problems that a conventional press is difficult to transfer, the material is deformed due to instant decompression in the transferring process, and the heating efficiency is low, and has high heating and cooling efficiency and simple operation.
Description
Technical Field
The utility model belongs to the technical field of the press, concretely relates to dull and stereotyped press for thermoplastic composite.
Background
The thermoplastic composite material can be directly used for manufacturing various composite material components, the quality of the thermoplastic composite material is directly related to the quality of the composite material, and the quality of the thermoplastic composite material is directly influenced by the forming method of the thermoplastic composite material, so that the research on the forming method of the thermoplastic composite material is very important.
The flat press is a common device for molding and processing thermoplastic high polymer materials, is a press with separated cold pressing and hot pressing or multi-layer openings, and carries out heating melting and cooling molding in different templates. The heating mode of the existing flat press mostly adopts the traditional resistance coil or oil temperature heating. CN109834957A discloses a prepreg molding method and a mold thereof, which uses vacuum pumping to remove residual air and small molecules to make resin uniformly and fully infiltrate, and uses a closed mold and a built-in air bag as an auxiliary means for compacting the prepreg. In addition, by setting gradient pressure and temperature, the resin is fully soaked in the fiber, and the phenomena of poor resin such as bridging, white spots, glue shortage and the like can be effectively improved. The utility model discloses a pressurize in sealed mould is inside, and controllability is strong, can effectively practice thrift cost, non-staining environment when improving composite forming, has enlarged application range. More importantly, due to strong designability of the die, good deformation of the pressure air bag and high temperature and pressure control precision, the composite material product with a complex structure and high fiber content can be prepared.
However, the above-mentioned forming die is a platen press with different cooling and heating dies, and when the thermoplastic composite material is formed by the platen press with different cooling and heating dies, there are some disadvantages: at first, the platen press of cold and hot different mould need take out the mould from the hot pressboard and shift to the cold pressing board when using, to large-scale finished piece and mould, the inconvenient potential safety hazard that just has the scald of operation, and when the platen press that utilizes cold and hot different mould is carrying out thermoplasticity combined material machine-shaping, need take out the mould from the hot pressboard and shift to the cold pressing board, to large-scale finished piece and mould, the inconvenient potential safety hazard that just has the scald of operation. Secondly, the thermoplastic composite material is impregnated between fiber bundles and into the fiber bundles under the action of pressure after the resin is melted in the heating process, the viscosity of the thermoplastic resin is about 5 times higher than that of thermosetting resin, the pressure required by the resin to be completely impregnated into the fiber bundles can be increased to 5 times or more, and a thermoplastic composite material die is transferred from a heating die plate to a cooling die plate in the processing process, so that the instant decompression of the material is caused, air is easily caused to enter a die cavity, and the risk of thermal aging exists; meanwhile, during the transfer process, instantaneous pressure loss is caused to the instantaneous high pressure in the cold template, and the high pressure difference can cause fiber distortion, so that the performance and the appearance of the product after cooling forming are poor; and in the process of molding the thermoplastic composite material, the viscosity of the resin is in negative correlation with the rise of the temperature, and the resin overflows and even breaks up the fiber bundles under high temperature and high pressure. Finally, most of the existing heating modes of the flat press adopt traditional resistance rings or oil temperature heating, the resistance rings are easy to age at high temperature, the service life is short, the maintenance amount is large, and the flat press also has the defects of low heat energy utilization rate, slow temperature rise, energy waste and the like; the oil temperature heating mode also has the defects of large power consumption, high cost, poor cost saving requirement, poor practicability and the like.
In order to solve the problems of the flat press, the development of a flat press for thermoplastic composite materials, which has high efficiency, simple operation and the same cold and hot mold, is urgently needed.
SUMMERY OF THE UTILITY MODEL
An it is not enough to prior art, the utility model aims to provide a dull and stereotyped press for thermoplastic composite, dull and stereotyped press for thermoplastic composite utilizes electromagnetic induction heating coil to heat, still utilizes cold district hydrologic cycle to cool off simultaneously, has realized cold and hot with the mould, need not to carry out the press when using and shifts, and then has avoided the material to lead to the problem of distortion because of pressure reduction in the transfer process, still has higher heating and cooling efficiency, and easy operation is convenient.
In order to achieve the purpose of the utility model, the utility model adopts the following technical proposal:
the utility model provides a flat press for thermoplastic composite, which comprises an upper heat insulation plate, an upper electromagnetic induction heating coil, a male die, a female die, a lower electromagnetic induction heating coil and a lower heat insulation plate which are arranged in sequence from top to bottom;
at least 1 through hole is formed in one side of each of the male die and the female die, the through hole in the male die penetrates through the male die along the length direction of the male die, and the through hole in the female die penetrates through the female die along the length direction of the female die;
the upper heat insulation plate, the upper electromagnetic induction heating coil and the male die are connected, and the female die, the lower electromagnetic induction heating coil and the lower heat insulation plate are connected.
The utility model provides a dull and stereotyped press for thermoplastic composite includes from the top down last heat insulating board that sets gradually, goes up electromagnetic induction heating coil, formpiston, bed die, lower electromagnetic induction heating coil and lower heat insulating board, just the formpiston with one side of bed die all is provided with 1 at least through-hole, through-hole on the formpiston is followed the length direction of formpiston runs through the formpiston, through-hole on the bed die is followed the length direction of bed die runs through the bed die. The upper heat insulation plate, the upper electromagnetic induction heating coil and the male die are connected together (the connection mode can be fixed by screws), the female die, the lower electromagnetic induction heating coil and the lower heat insulation plate are connected (the connection mode can be fixed by screws), the male die and the female die are not connected and have a certain distance when not used, when the female die is used, a thermoplastic composite material to be pressed is placed on the upper surface of the female die, then the upper heat insulation plate, the upper electromagnetic induction heating coil and the male die which are connected together are driven by a control cabinet to move downwards through a control oil pressure system to complete pressing, and the pressure range can be 0-20 MPa.
And simultaneously, the utility model provides a dull and stereotyped press for thermoplastic composite is cold and hot with the mould, and heating pressurization and cooling pressurization all can realize. The heating mode is electromagnetic heating, when heating and pressurizing are needed, the male die or the female die is heated by the upper electromagnetic induction heating coil and the lower electromagnetic induction heating coil, and meanwhile, gas is introduced into through holes of the male die and the female die to realize rapid heating of the flat press; and the cooling mode is circulating water cooling, and circulating cooling water is introduced into through holes of the male die and the female die while the upper electromagnetic induction heating coil and the lower electromagnetic induction heating coil are stopped from heating, so that the rapid cooling of the flat press is realized. The cold and hot mould pressing device successfully realizes cold and hot mould pressing, further effectively solves the problems that the mould is difficult to transfer in the conventional press, the material is deformed due to instant pressure loss in the transferring process, and the heating efficiency is low, has higher heating and cooling efficiency, and is simple to operate.
It should also be noted that the utility model discloses do not do special restriction to the number and the diameter of the through-hole that sets up in formpiston and the bed die in the flat press for the thermoplastic composite who provides, specifically adjust according to the size of formpiston and bed die, make the through-hole evenly distribute in formpiston and bed die can.
In the utility model, the lower heat insulation board of the upper heat insulation board is preferably made of high temperature resistant glass fiber and high heat resistance composite material; the upper electromagnetic induction heating coil and the lower electromagnetic induction heating coil are preferably formed by winding a plurality of strands of high-temperature copper wires into electromagnetic coils, alkali-free glass fiber sleeves are sleeved outside the electromagnetic coils, and the male die and the female die are preferably made of steel. Preferably, a convex structure is arranged on the male die, a concave structure is arranged on the female die, and the convex structure is matched with the concave structure.
As the utility model discloses an optimal technical scheme be provided with protruding structure on the formpiston, be provided with the indent structure on the bed die, will treat during the use that forming material arranges in the indent structure of bed die, descend the formpiston pressurizes, can effectively avoid the resin overflow problem that can cause under high temperature, high pressure.
Preferably, an upper electromagnetic shielding plate is further arranged between the upper electromagnetic induction heating coil and the upper heat insulation plate.
Preferably, the upper electromagnetic induction heating coil is embedded in the male mold.
Preferably, the lower electromagnetic induction heating coil is embedded in the female mold.
Preferably, a lower electromagnetic shielding plate is further disposed between the lower electromagnetic induction heating coil and the lower heat insulation plate.
Preferably, the upper electromagnetic induction heating coil and the lower electromagnetic induction heating coil are both rectangular in winding shape.
Preferably, one end of the through hole is connected with a water inlet pipe, and the other end of the through hole is connected with a water outlet pipe.
The utility model discloses in, inlet tube and outlet pipe are metal collapsible tube.
Preferably, the upper heat insulation plate is connected with an oil pressure system, and the oil pressure system drives the upper heat insulation plate, the upper electromagnetic induction heating coil and the male die to move up and down.
The utility model discloses in, utilize oil pressure system provides pressure for the platen press, and the pressure range is 0 ~ 20MPa.
Preferably, the thermoplastic composite material is controlled by a flat press through a control cabinet, and a manual control button and a PLC touch pad are arranged on the control cabinet.
The utility model discloses in, have manual control button and PLC touch pad on the switch board, can control dull and stereotyped press's lift, pressure value, heating temperature, heat time and cooling time isoparametric.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a flat press for thermoplastic composite material, which comprises an upper heat insulation plate, an upper electromagnetic induction heating coil, a male die, a female die, a lower electromagnetic induction heating coil and a lower heat insulation plate which are arranged in sequence from top to bottom; at least 1 through hole is formed in one side of each of the male die and the female die, the through hole in the male die penetrates through the male die along the length direction of the male die, and the through hole in the female die penetrates through the female die along the length direction of the female die; the upper heat insulation plate, the upper electromagnetic induction heating coil and the male die are connected, and the female die and the lower electromagnetic induction heating coil are connected with the lower heat insulation plate; the flat press for the thermoplastic composite material is a cold and hot same die, has higher heating and cooling efficiency, is simple to operate, and effectively solves the problems that a press die provided in the prior art is difficult to transfer, and the material is easy to lose pressure instantly in the transfer process to deform, overflow resin, have low heating efficiency and the like.
Drawings
Fig. 1 is an exploded view of a platen press for thermoplastic composite material according to a first embodiment of the present invention;
FIG. 2 is an exploded view of a platen press for thermoplastic composites in accordance with a second embodiment of the present invention;
wherein, 1-upper heat insulation plate, 2-upper electromagnetic induction heating coil, 3-male die, 3-1-through hole, 3-2-convex structure, 4-female die, 4-1-through hole, 4-2-concave structure, 5-lower electromagnetic induction heating coil, 6-lower heat insulation plate, 7-upper electromagnetic shielding plate and 8-lower electromagnetic shielding plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In a first embodiment, the present invention provides a platen press for thermoplastic composite materials, as shown in fig. 1, which is composed of an upper heat insulation plate 1, an upper electromagnetic induction heating coil 2, a male mold 3, a female mold 4, a lower electromagnetic induction heating coil 5, and a lower heat insulation plate 6, which are sequentially arranged from top to bottom; the upper heat insulation plate 1, the upper electromagnetic induction heating coil 2 and the male die 3 are connected, the female die 4, the lower electromagnetic induction heating coil 5 and the lower heat insulation plate 6 are connected, and the male die 3 and the female die 4 are not connected;
at least 1 through hole is formed in one side of each of the male die 3 and the female die 4, the diameter and the number of the through holes are not required, the through hole 3-1 in the male die 3 penetrates through the male die 3 along the length direction of the male die 3, and the through hole 4-1 in the female die 4 penetrates through the female die 4 along the length direction of the female die 4; the through hole is filled with air when the pressurizing mode is heating and pressurizing, and is filled with circulating cooling water when the pressurizing mode is cooling and pressurizing;
the male die 3 is also provided with a convex structure 3-2, the female die 4 is also provided with a concave structure 4-2, when in use, a material to be formed is placed in the concave structure 4-2 of the female die 4, and when in use, a thermoplastic composite material to be pressed can be placed in the concave structure 4-2 of the female die 4, so that the problem of resin overflow caused under high temperature and high pressure can be effectively avoided;
when the flat press for thermoplastic composite materials provided by the embodiment is used, the oil pressure system is controlled by the control cabinet so as to drive the lower upper heat insulation plate 1, the upper electromagnetic induction heating coil 2 and the male die 3 to pressurize, and parameters such as a pressure value, a heating temperature, heating time, cooling time and the like are set; when the heating and pressurizing mode is set, the upper electromagnetic induction heating coil 2 and the lower electromagnetic induction heating coil 5 are electrified to heat, and air is introduced into the through hole 3-1 on the male die 3 and the through hole 4-1 on the female die 4, so that the rapid heating of the flat press can be realized; when the cooling and pressurizing mode is set, the upper electromagnetic induction heating coil 2 and the lower electromagnetic induction heating coil 5 stop heating, circulating cooling water is introduced into the through hole 3-1 in the male die 3 and the through hole 4-1 in the female die 4, the flat press is rapidly cooled, high heating and cooling efficiency is achieved, the operation is simple, and meanwhile, the problems that a conventional press die is difficult to transfer, deformation, resin overflow, low heating efficiency and the like due to the fact that materials are easy to lose pressure instantly in the transferring process can be effectively solved.
In a second embodiment, the present invention provides a platen press for thermoplastic composite materials, as shown in fig. 2, which comprises an upper heat insulation plate 1, an upper electromagnetic shielding plate 7, an upper electromagnetic induction heating coil 2, a male mold 3, a female mold 4, a lower electromagnetic induction heating coil 5, a lower electromagnetic shielding plate 8 and a lower heat insulation plate 6, which are sequentially arranged from top to bottom; an upper electromagnetic shielding plate 7 is arranged between the upper electromagnetic induction heating coil 2 and the upper heat insulation plate 1, and a lower electromagnetic shielding plate 8 is arranged between the lower electromagnetic induction heating coil 5 and the lower heat insulation plate 6, so that the heat of the upper electromagnetic induction heating coil 2 and the lower electromagnetic shielding coil 5 can be concentrated on the male die 3 and the female die 4, and the heating efficiency is improved.
Utilize the utility model provides a method that thermoplasticity is flatbed press pressurizes for combined material specifically includes following step:
(1) Sequentially overlapping a fiber reinforcement prepared in advance and a prepreg (or a resin film) in an inwards concave structure of a female die;
(2) The hydraulic system is controlled to drive the descending male die to pressurize;
(3) Setting parameters such as processing temperature, pressure, time and the like on a PLC touch panel of the control cabinet;
(4) And opening the die, and taking out the formed continuous fiber reinforced thermoplastic composite material plate.
The applicant states that the present invention is illustrated by the above embodiments, but the present invention is not limited to the above process steps, i.e. the present invention is not meant to be implemented by relying on the above process steps. It should be clear to those skilled in the art that any improvement of the present invention is to the equivalent replacement of the selected raw materials, the addition of auxiliary components, the selection of specific modes, etc., all fall within the protection scope and disclosure scope of the present invention.
Claims (10)
1. The flat press for the thermoplastic composite material is characterized by comprising an upper heat insulation plate, an upper electromagnetic induction heating coil, a male die, a female die, a lower electromagnetic induction heating coil and a lower heat insulation plate which are sequentially arranged from top to bottom;
at least 1 through hole is formed in one side of each of the male die and the female die, the through hole in the male die penetrates through the male die along the length direction of the male die, and the through hole in the female die penetrates through the female die along the length direction of the female die;
the upper heat insulation plate, the upper electromagnetic induction heating coil and the male die are connected, and the female die, the lower electromagnetic induction heating coil and the lower heat insulation plate are connected.
2. The platen press according to claim 1, wherein the male mold has a raised structure disposed thereon and the female mold has a recessed structure disposed thereon, the raised structure cooperating with the recessed structure.
3. The platen press for thermoplastic composites as claimed in claim 1, wherein the upper electromagnetic induction heating coil is embedded in the male mold.
4. The platen press according to claim 1, wherein an upper electromagnetic shielding plate is further disposed between the upper electromagnetic induction heating coil and the upper heat insulating plate.
5. The platen press for thermoplastic composites according to claim 1 wherein said lower electromagnetic induction heating coil is embedded in said female mold.
6. The platen press for thermoplastic composites according to claim 1, wherein a lower electromagnetic shield plate is further disposed between the lower electromagnetic induction heating coil and the lower heat insulation plate.
7. The platen press according to claim 1, wherein the upper electromagnetic induction heating coil and the lower electromagnetic induction heating coil are wound in a rectangular shape.
8. The platen press according to claim 1, wherein each of the through holes has a water inlet pipe connected to one end thereof and a water outlet pipe connected to the other end thereof.
9. The platen press according to claim 1, wherein the upper heat insulating plate is connected to an oil pressure system, and the oil pressure system drives the upper heat insulating plate, the upper electromagnetic induction heating coil, and the male mold to move up and down.
10. The platen press for thermoplastic composites of claim 1 wherein said male mold is a steel male mold and said female mold is a steel female mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222173442.9U CN218197064U (en) | 2022-08-18 | 2022-08-18 | Flat press for thermoplastic composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222173442.9U CN218197064U (en) | 2022-08-18 | 2022-08-18 | Flat press for thermoplastic composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218197064U true CN218197064U (en) | 2023-01-03 |
Family
ID=84658571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222173442.9U Active CN218197064U (en) | 2022-08-18 | 2022-08-18 | Flat press for thermoplastic composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218197064U (en) |
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2022
- 2022-08-18 CN CN202222173442.9U patent/CN218197064U/en active Active
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