CN210969606U

CN210969606U - Resin-based composite material's solidification equipment

Info

Publication number: CN210969606U
Application number: CN201921989570.2U
Authority: CN
Inventors: 孟志新; 刘星宇; 王旭东; 传杨阳; 尚光伟; 周浪
Original assignee: Xian Aeronautical University
Current assignee: Xian Aeronautical University
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-07-10
Anticipated expiration: 2029-11-18

Abstract

The utility model discloses a resin-based composite's solidification equipment, box including non-magnetic conductive material, box internally mounted has the metal mandrel of bottle shape, install electromagnetic induction coil in the tank wall of box, the open end of metal mandrel passes through rotary joint and is connected with the box, the other end of metal mandrel passes through rotation axis connection drive arrangement, the inside cooling core pipe of installing along the axis direction of metal mandrel, be equipped with a plurality of air ducts on the cooling core pipe, the outside cover of cooling core pipe is equipped with elastic airbag, evenly be equipped with a plurality of exhaust holes on the elastic airbag, cooling core pipe and rotary joint's air inlet intercommunication, space between elastic airbag and the metal mandrel and rotary joint's gas outlet intercommunication. The utility model discloses the structure sets up rationally, has heating solidification and rapid cooling function, and heating efficiency is high, and the heating is even, has improved the material compactness, ensures product quality, and rapid cooling device is applicable to the bottle mandrel, has improved cooling homogeneity and cooling efficiency, and production efficiency is high.

Description

Resin-based composite material's solidification equipment

Technical Field

The utility model belongs to the technical field of the combined material shaping, a resin matrix combined material's solidification equipment is related to.

Background

The resin-based composite material has the characteristics of high strength, corrosion resistance, light weight and the like, is widely applied to the fields of aerospace, energy, buildings and the like, and generally adopts an internal heating curing forming mode to heat the resin-based composite material from inside to outside, wherein the internal temperature is higher than the external temperature, and gas and redundant resin in the composite material are discharged in the forming process, so that the compactness is increased, and the quality of a finished product is improved; the prior internal heating curing device usually adopts a built-in heating or cooling device, but the mode is not suitable for a bottle-shaped core die, because the length-diameter ratio of the bottle-shaped core die is small, the inlet of the core die is small, the diameter of the heating or cooling device extending into the core die is limited, and the space between the heating or cooling device and the core die is larger, most of hot air or cold air can only improve or reduce the temperature of a nearby area, the efficiency is low, the uniformity is not good enough, and the quality of a product is influenced; in addition, because of the limitation of the installation position, the existing curing device does not have a rapid cooling device, and generally adopts natural cooling to influence the production efficiency.

Disclosure of Invention

In order to achieve the purpose, the utility model provides a resin matrix combined material's solidification equipment, the structure sets up rationally, has heating solidification and rapid cooling function, adopts the internal heating mode, and heating efficiency is high, and the heating is even, has improved material compactness, ensures product quality, and rapid cooling device is applicable to the bottle mandrel, has improved cooling homogeneity and cooling efficiency, and production efficiency is high, has solved the problem that exists among the prior art.

The utility model adopts the technical proposal that a resin-based composite material curing device comprises a box body made of non-magnetic conductive material, a bottle-shaped metal core mould is arranged inside the box body, an electromagnetic induction coil is arranged in the box wall of the box body, the electromagnetic induction coil is coaxial with the metal core mould, the electromagnetic induction coil is connected with an external host, the open end of the metal core mould is connected with the box body through a rotary joint, the other end of the metal core mould is connected with a driving device through a rotary shaft, a cooling core pipe is arranged inside the metal core mould along the axial direction, a plurality of air guide pipes are arranged on the cooling core pipe, an elastic air bag is sleeved outside the cooling core pipe, one end of the elastic air bag is fixed at the end part of the cooling core pipe close to the rotary joint, a plurality of air exhaust holes are evenly arranged on the elastic, the space between the elastic air bag and the metal core mold is communicated with the air outlet of the rotary joint.

Furthermore, the distance between the air guide pipes is gradually reduced from the opening end of the metal core mould to the other end, and the distance between the air guide pipes is 10-25 cm.

Furthermore, the length of the air duct gradually increases from the opening end of the metal core mould to the other end, and the length of the air duct is 1/3-2/3 of the radial distance between the inner wall of the elastic air bag and the cooling core tube when the elastic air bag expands.

Furthermore, the box body is internally provided with a closed space, and the box body is provided with a vacuum valve which is connected with a vacuumizing device.

Further, a central tube is installed along the axis in rotary joint's inside, central tube intercommunication cooling core pipe and air inlet, the central tube is connected with rotary joint's casing through first axle sleeve, the outside cover of central tube is equipped with the outer tube, the outer tube passes through the second axle sleeve and is connected with the casing, install second seal bearing between outer tube and the casing, the open end flange joint of outer tube and metal mandrel, space and outer tube intercommunication between elasticity gasbag and the metal mandrel, form the cavity between central tube outer wall and the casing, the outer tube passes through cavity and gas outlet intercommunication, rotary joint's casing and box sealing connection.

Furthermore, the driving device is arranged outside the box body, the rotating shaft is rotatably connected with the box body through a first sealing bearing, and the rotating shaft and the metal core mold are coaxial.

Further, the air inlet is connected with a cold air storage tank through a pipeline, and a valve is arranged on the pipeline.

Further, the air outlet is connected with a hot air recovery box through a pipeline.

Furthermore, a vacuum gauge is installed in the box body, a temperature sensor is installed on the metal core mold, and the vacuum gauge and the temperature sensor are both connected with the host machine.

The utility model has the advantages that:

the utility model discloses an external host computer is electromagnetic induction coil input intermediate frequency alternating current, and electromagnetic induction coil produces the alternating magnetic field of high-speed change, and the box adopts non-magnetic material, only makes the metal mandrel of magnetic conduction generate heat fast, and the resin matrix combined material is solidified to interior heating method, and heating efficiency is high, and the heating is even, discharges gas, the unnecessary resin in the resin matrix combined material in the curing forming process, increases the compactness, improves finished product quality; meanwhile, the interior of the box body is vacuumized, and the metal core mold is driven to rotate by the driving device, so that gas and redundant resin can be discharged, and the quality of a finished product is further improved.

After the solidification is accomplished, open the valve on the air inlet pipeline, cold air gets into the cooling core pipe from the air inlet, in getting into the elasticity gasbag along the air duct, when there is pressure in the elasticity gasbag, the elasticity gasbag inflation, the cold air in the elasticity gasbag is spout to the metal core mould inner wall along the exhaust hole, evenly, reduce the temperature of metal core mould fast, be applicable to the bottle shape core mould, air after the heat exchange is discharged from rotary joint's gas outlet, get into the hot-air recovery case, compare production efficiency in the very big degree with natural cooling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view showing the flow of gas inside the metal core mold according to the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a rotary joint in an embodiment of the present invention.

In the figure, 1, a box body, 2, an electromagnetic induction coil, 3, a metal core mould, 4, a resin-based composite material layer, 5, an elastic air bag, 6, a cooling core pipe, 7, an air guide pipe, 8, a rotating shaft, 9, a first sealing bearing, 10, a vacuum valve, 11, a rotating joint, 12, an air inlet, 13, an air outlet, 14, an exhaust hole, 15, a second sealing bearing, 16, a cavity, 17, a first shaft sleeve, 18, a second shaft sleeve, 19, a central pipe and 20, an outer pipe are arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

The resin-based composite material curing device provided by the embodiment of the utility model has the structure as shown in figure 1, and comprises a box body 1, wherein a bottle-shaped metal core mold 3 is arranged inside the box body 1, an electromagnetic induction coil 2 is arranged in the box wall of the box body 1, the electromagnetic induction coil 2 and the metal core mold 3 are coaxial, the electromagnetic induction coil 2 is connected with an external host, and the box body 1 adopts a non-magnetic-conductive material, so that the electromagnetic induction coil 2 only heats the metal core mold 3; the open end of the metal core mold 3 is connected with the box body 1 through a rotary joint 11, the other end of the metal core mold 3 is connected with a driving device through a rotating shaft 8, the rotating shaft 8 is coaxial with the metal core mold 3, the driving device is arranged outside the box body 1, the rotating shaft 8 is rotatably connected with the box body 1 through a first sealing bearing 9, a cooling core tube 6 is arranged inside the metal core mold 3 along the axis direction, a plurality of air guide tubes 7 are arranged on the cooling core tube 6, an elastic air bag 5 is sleeved outside the cooling core tube 6, one end of the elastic air bag 5 is fixed at the end part, close to the rotary joint 11, of the cooling core tube 6, a plurality of exhaust holes 14 are evenly formed in the elastic air bag 5, the cooling core tube 6 is communicated with an air inlet 12 of the rotary joint 11, the space between the elastic air bag 5 and the metal core mold 3 is communicated with.

When the pressure is applied to the interior of the elastic air bag 5, the elastic air bag 5 expands, and the cold air in the elastic air bag 5 is sprayed to the inner wall of the metal core mold 3 along the exhaust holes 14, so that the temperature of the metal core mold 3 is uniformly and rapidly reduced, and the production efficiency is improved. The distance between the air ducts 7 is gradually reduced from the opening end of the metal core mould 3 to the other end, and the distance between the air ducts 7 is 10-25cm, so that compressed cold air quickly enters the elastic air bag 5, and the elastic air bag 5 is expanded; because the diameter of the fixed end is smaller than that of the other end of the elastic air bag 5 after the expansion, the length of the air duct 7 gradually increases from the opening end of the metal core mould 3 to the other end, the length of the air duct 7 is 1/3-2/3 of the radial distance between the inner wall of the elastic air bag 5 and the cooling core pipe 6 when the elastic air bag 5 expands, cold air is conveyed to the inner wall area of the elastic air bag 5 as far as possible, and the cooling efficiency is improved.

The structure of the rotary joint 11 is, as shown in fig. 3, a central tube 19 is installed inside the rotary joint 11 along an axis, the central tube 19 is communicated with the cooling core tube 6 and the air inlet 12, the central tube 19 is connected with a shell of the rotary joint 11 through a first shaft sleeve 17, an outer tube 20 is sleeved outside the central tube 19, the outer tube 20 is connected with the shell through a second shaft sleeve 18, a second sealing bearing 15 is installed between the outer tube 20 and the shell, the outer tube 20 is connected with an open end flange of the metal core mold 3, a space between the elastic air bag 5 and the metal core mold 3 is communicated with the outer tube 20, a cavity 16 is formed between an outer wall of the central tube 19 and the shell, the outer tube 20 is communicated with the air outlet 13 through the.

The utility model discloses working process:

the method comprises the steps of putting a metal core die 3 to be cured and attached with a resin matrix composite material layer 4 into a box body 1, putting a cooling core tube 6 fixed with an elastic air bag 5 into the metal core die 3, connecting an opening end of the metal core die 3 with a rotary joint 11 in a flange mode, connecting the other end of the metal core die 3 with a rotary shaft 8, closing a door of the box body 1, inputting medium-frequency alternating current into an electromagnetic induction coil 2 through an external host, enabling the electromagnetic induction coil 2 to generate an alternating magnetic field changing at a high speed, enabling the magnetic metal core die 3 to rapidly generate heat, heating and curing the resin matrix composite material, discharging gas and redundant resin in the resin matrix composite material in the curing and forming process, increasing compactness and improving the quality of a finished; meanwhile, the interior of the box body 1 is vacuumized, after the required vacuum degree is reached, the vacuum valve 10 is closed, and the metal core mold 3 is driven to rotate by a driving device, so that gas and redundant resin can be discharged, and the quality of a finished product is further improved; a vacuum gauge is installed in the box body 1, a temperature sensor is installed on the metal core mold 3, the vacuum gauge and the temperature sensor are both connected with a host machine, the vacuum degree in the box body 1 and the temperature of the metal core mold 3 are adjusted in time, the vacuum gauge can adopt a digital vacuum gauge with the model of ZKJ-1000Pa, and the temperature sensor can adopt a platinum thermal resistance type temperature sensor with the model of PT100, and is resistant to high temperature and high pressure.

After the solidification is finished, a valve on a pipeline of the air inlet 12 is opened, cold air enters the cooling core pipe 6 from the air inlet 12 and enters the elastic air bag 5 along the air guide pipe 7, when pressure exists in the elastic air bag 5, the elastic air bag 5 expands, the cold air in the elastic air bag 5 is sprayed to the inner wall of the metal core mold 3 along the exhaust hole 14, the temperature of the metal core mold 3 is uniformly and quickly reduced, the cold air between the elastic air bag 5 and the metal core mold 3 enters the outer pipe 20 of the rotary joint 11 after heat exchange with the metal core mold 3, the cold air is discharged from the air outlet 13 after passing through the cavity 16 and enters the hot air recycling box, and compared with natural cooling, the production efficiency is greatly improved.

It is to be noted that, in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. A curing device for resin-based composite materials is characterized by comprising a box body (1) made of non-magnetic materials, wherein a bottle-shaped metal core mold (3) is installed inside the box body (1), an electromagnetic induction coil (2) is installed in the box wall of the box body (1), the electromagnetic induction coil (2) and the metal core mold (3) are coaxial, the electromagnetic induction coil (2) is connected with an external host, the open end of the metal core mold (3) is connected with the box body (1) through a rotary joint (11), the other end of the metal core mold (3) is connected with a driving device through a rotating shaft (8), a cooling core tube (6) is installed inside the metal core mold (3) along the axis direction, a plurality of air guide tubes (7) are arranged on the cooling core tube (6), an elastic air bag (5) is sleeved outside the cooling core tube (6), one end of the elastic air bag (5) is fixed at the end part, close, a plurality of exhaust holes (14) are uniformly formed in the elastic air bag (5), the pipe diameter of the air guide pipe (7) is larger than the hole diameter of each exhaust hole (14), the cooling core pipe (6) is communicated with an air inlet (12) of the rotary joint (11), and the space between the elastic air bag (5) and the metal core mold (3) is communicated with an air outlet (13) of the rotary joint (11).

2. The curing device of resin matrix composite according to claim 1, wherein the distance between the air ducts (7) is gradually reduced from the open end of the metal core mold (3) to the other end, and the distance between the air ducts (7) is 10-25 cm.

3. The resin-based composite curing device according to claim 1, wherein the length of the gas-guiding tube (7) gradually increases from the open end of the metal core mold (3) to the other end, and the length of the gas-guiding tube (7) is 1/3-2/3 of the radial distance between the inner wall of the elastic balloon (5) and the cooling core tube (6) when the elastic balloon is expanded.

4. The curing device for the resin-based composite material according to claim 1, wherein the box body (1) is a closed space, the box body (1) is provided with a vacuum valve (10), and the vacuum valve (10) is connected with a vacuum pumping device.

5. The curing device for the resin-based composite material according to claim 1, wherein a central tube (19) is installed inside the rotary joint (11) along an axis, the central tube (19) is communicated with the cooling core tube (6) and the air inlet (12), the central tube (19) is connected with a shell of the rotary joint (11) through a first shaft sleeve (17), an outer tube (20) is sleeved outside the central tube (19), the outer tube (20) is connected with the shell through a second shaft sleeve (18), a second sealing bearing (15) is installed between the outer tube (20) and the shell, the outer tube (20) is connected with an open end flange of the metal core mold (3), a space between the elastic air bag (5) and the metal core mold (3) is communicated with the outer tube (20), a cavity (16) is formed between the outer wall of the central tube (19) and the shell, and the outer tube (20) is communicated with the air outlet (13) through the cavity (, the shell of the rotary joint (11) is hermetically connected with the box body (1).

6. The apparatus for curing a resin-based composite material as claimed in claim 1, wherein the driving means is provided outside the casing (1), the rotating shaft (8) is rotatably connected to the casing (1) through a first sealed bearing (9), and the rotating shaft (8) is coaxial with the metal core mold (3).

7. The apparatus for curing a resin-based composite material as claimed in claim 1, wherein the air inlet (12) is connected to a cold air storage tank through a pipe, and a valve is provided on the pipe.

8. The apparatus for curing a resin-based composite material as claimed in claim 1, wherein said air outlet (13) is connected to a hot air recovery tank through a pipe.

9. The curing device for the resin-based composite material as claimed in claim 1 or 4, wherein a vacuum gauge is installed in the box body (1), a temperature sensor is installed on the metal core mold (3), and the vacuum gauge and the temperature sensor are both connected with a host machine.