CN114683576A - Heatable prepreg laying-layer pre-compaction tool and laying-layer pre-compaction method - Google Patents
Heatable prepreg laying-layer pre-compaction tool and laying-layer pre-compaction method Download PDFInfo
- Publication number
- CN114683576A CN114683576A CN202210294274.0A CN202210294274A CN114683576A CN 114683576 A CN114683576 A CN 114683576A CN 202210294274 A CN202210294274 A CN 202210294274A CN 114683576 A CN114683576 A CN 114683576A
- Authority
- CN
- China
- Prior art keywords
- prepreg
- platform
- laying
- heatable
- compaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention provides a heatable prepreg paving layer pre-compaction tool and a paving layer pre-compaction method, wherein the tool comprises the following components: a platform; the heating part is arranged in the platform; the sealing gasket is arranged above the platform; the upper sealing part is arranged above the sealing gasket and is arranged around the edge of the sealing gasket; the lower sealing part is arranged below the platform and corresponds to the upper sealing part in position; a clamping part which detachably clamps the upper sealing part and the lower sealing part to seal the edge of the sealing gasket; and the vacuum nozzle is arranged on the upper surface of the platform, is positioned on the inner side of the area defined by the upper sealing part and is used for being connected with the vacuumizing device. According to the heatable prepreg laying layer pre-compaction tool, the platform has a heating function, the prepreg can be heated, and the compaction rate between layers is improved; the preheating layering and vacuum pre-compaction are integrated, so that the preparation efficiency is improved; the preheating temperature is adjustable, and the excess resin flows by adjusting the temperature of the platform and is led out by the adhesive absorption felt, so that the thickness of the product is controlled.
Description
Technical Field
The invention belongs to the technical field of tools for prepreg paving, and particularly relates to a heatable prepreg paving layer pre-compacting tool and a paving layer pre-compacting method.
Background
In the preparation process of the fiber reinforced resin matrix composite material product, the prepreg needs to be layered to form the structure of the composite material product, and the layering and pre-compaction of the prepreg usually adopt manual layering or automatic equipment layering. The forming process of artificial layering and vacuum pre-compaction has wide application prospect in the occasions of manufacturing principle samples, small-batch production, complex product profiles and the like.
The manual laying is usually completed on a prepreg laying tool, the structure of the tool commonly used at present is simpler, the tool comprises a platform for laying prepreg, laying of the prepreg is completed on the platform, then vacuum auxiliary materials are sequentially placed, and the prepreg is subjected to vacuum pre-compaction on the platform. For example, chinese patent publication No. CN112848368A discloses a method for performing a thermal diaphragm, in which a combined detachable tool is used as a common molding tool for laying and thermal diaphragm performing, the tool is composed of a main performing tool and an auxiliary laying tool, and the main performing tool is a simple platform for prepreg laying. However, the manual laying and vacuum precompaction process using the existing laying tool still has the following disadvantages compared with the automatic equipment laying: firstly, the sticking rate between prepreg layers is poor; and secondly, the control of the glue content is not facilitated, so that the product thickness is controlled, and the mechanical property of the product is improved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a heatable prepreg paving layer pre-compaction tool and a paving layer pre-compaction method, wherein a platform of the tool has a heating function, can heat prepreg and improve the compaction rate between layers, so that the paving quality of the prepreg is improved; the preheating temperature of the tool is adjustable, and the excess resin can flow by adjusting the temperature of the platform and then be led out by the adhesive absorption felt, so that the thickness of a product is controlled, and the mechanical property of the product is improved.
In order to solve the above problems, an aspect of the present invention provides a heatable prepreg ply pre-compaction tool, including:
a platform for laying prepreg;
the heating part is arranged in the platform and used for heating the platform;
the sealing gasket is arranged above the platform;
the upper sealing part is arranged above the sealing gasket and is arranged around the edge of the sealing gasket;
the lower sealing part is arranged below the platform and corresponds to the upper sealing part in position;
the clamping part is used for detachably clamping the upper sealing part and the lower sealing part to seal the edge of the sealing gasket;
and the vacuum nozzle is arranged on the upper surface of the platform, is positioned on the inner side of the area defined by the upper sealing part and is used for being connected with a vacuumizing device.
Preferably, the heatable prepreg laying-up pre-compaction tool further comprises:
the groove is arranged on the upper surface of the platform and is arranged along the bottom edge of the upper sealing part;
and the sealing strip is arranged in the groove.
Preferably, the heatable prepreg laying-up pre-compaction tool further comprises:
and the temperature control device is electrically connected with the heating part and is used for controlling the temperature of the heating part.
Preferably, the upper sealing portion is an annular plate surrounding an edge of the sealing gasket;
the lower sealing part is an annular plate with the shape and the size identical to those of the upper sealing part.
Preferably, the upper sealing part and the lower sealing part are made of aluminum alloy.
Preferably, the platform is a fibre reinforced resin based composite material.
Preferably, the sealing pad is a silicone pad.
Preferably, the lower sealing portion is fixedly connected with the platform.
Preferably, the heating part is a layered structure, and the heating part is parallel to the upper surface of the platform.
Preferably, the clamping portion is a quick clamp.
The invention further provides a prepreg paving layer pre-compaction method which is completed by adopting the heatable prepreg paving layer pre-compaction tool.
Preferably, the method comprises the following steps:
s1, preheating the platform through the heating part;
s2, paving a glue absorption felt on the platform;
s3, laying a prepreg on the adhesive absorption felt until the number of layers is specified;
s4, laying demolding cloth on the prepreg;
s5, laying a breathable felt on the demolding cloth;
s6, laying the sealing gasket on the breathable felt, then placing the upper sealing part above the sealing gasket, and clamping the upper sealing part and the lower sealing part through the clamping part;
s7, vacuumizing to a selected vacuum degree;
and S8, maintaining the pressure at the selected temperature for the selected time, and taking out the prepreg to finish the laying and pre-compaction of the prepreg.
Preferably, before step S1, the method further includes, before the step S1, debugging the vacuum system, specifically including the following steps:
through vacuum nozzle connects vacuum pump, vacuum table, will again sealed pad is spread extremely on the platform, will go up the sealing and place in sealed pad top is and around sealed edge of filling up, through the clamping part will go up the sealing and correspond the setting with the position the lower sealing presss from both sides tightly, will sealed peripheral edge of filling up is sealed, then debugs vacuum system, closes after the debugging finishes vacuum system, demolishs sealed pad the upper seal portion.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the heatable prepreg laying-up pre-compaction tool, the platform of the tool has a heating function and can heat prepreg, the temperature of a clean room is generally set at 25 ℃ when laying-up is carried out, the prepreg is harder and is not easy to lay-up, so that the compaction rate between layers is poor, the problems of bridge frame, air inclusion and the like are possibly caused, the prepreg is preheated in the laying-up process by arranging the heating part in the platform, the defects can be overcome, and the good laying-up quality is obtained; the tool integrates two functions of preheating a laying layer and vacuum pre-compacting, so that the preparation efficiency can be greatly improved;
2. the heatable prepreg paving layer pre-compaction tool is also provided with the temperature control device, the preheating temperature of the tool is adjustable by adjusting the heating temperature of the heating part through the temperature control device, redundant resin flows by adjusting the temperature, and the redundant resin is led out through the glue absorption felt, so that the thickness of a product is controlled, the fiber content of the product is improved, and higher mechanical property is obtained;
3. according to the heatable prepreg paving layer pre-compaction tool, the platform is made of the fiber reinforced resin matrix composite material, the fiber reinforced resin matrix composite material can be conveniently manufactured into a high-precision complex curved surface, and the tool can be suitable for preparing prepreg paving layer structures in various shapes.
Drawings
Fig. 1 is a schematic structural diagram of a heatable prepreg ply pre-compaction tool according to embodiment 1 of the present invention.
Wherein: 1-upper sealing part; 2-a sealing gasket; 3-air felt; 4-demolding cloth; 5-prepreg; 6-glue absorption felt; 7-a vacuum nozzle; 8-sealing strips; 9-lower seal; 10-a platform; 11-a heating section; 12-grooves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
As shown in fig. 1, the heatable prepreg ply pre-compaction tool according to the embodiment includes:
a platform 10 for laying the prepreg 5;
a heating unit 11 provided inside the stage 10 to heat the stage 10;
the sealing gasket 2 is arranged above the platform 10;
an upper sealing part 1 which is arranged above the sealing gasket 2 and is arranged around the edge of the sealing gasket 2;
a lower sealing part 9 provided below the stage 10 and corresponding to the upper sealing part 1;
a clamp portion that detachably clamps the upper seal portion 1 and the lower seal portion 9, and seals the edge of the gasket 2;
and the vacuum nozzle 7 is arranged on the upper surface of the platform 10, is positioned on the inner side of the area enclosed by the upper sealing part 1, and is used for being connected with a vacuum-pumping device.
The process of laying and pre-compacting the prepreg by using the heatable prepreg laying and pre-compacting tool described in the embodiment comprises the following steps: 1. cleaning the composite material platform, and applying a release agent; 2. connecting a vacuum pump and a vacuum meter through a vacuum nozzle, laying a sealing gasket on a platform, placing an upper sealing part above the sealing gasket and surrounding the edge of the sealing gasket, clamping the upper sealing part and a lower sealing part correspondingly arranged in position through a clamping part so as to seal the peripheral edge of the sealing gasket, debugging a vacuum system, closing a vacuum switch after debugging is finished, detaching the upper sealing part and the sealing gasket, and placing the sealing gasket on one side for standby; 3. opening the heating part to start preheating the platform; 4. paving a glue absorption felt 6 on the platform; 5. laying the prepreg 5 on a rubber suction felt until the number of layers is specified, and scraping each layer by using a scraper blade; 6. laying a demoulding cloth 4 on the prepreg; 7. paving a breathable felt 3 on the demoulding cloth; 8. laying a sealing gasket on the breathable felt, then placing an upper sealing part above the sealing gasket, and clamping the upper sealing part and a lower sealing part through a clamping part; 9. opening a vacuum switch to vacuumize until the designated number of the vacuum table is indicated; 10. and (3) maintaining the pressure for a specified time at a specified temperature, opening the cover, taking out the prepreg, and finishing the laying and pre-compaction of the prepreg.
In the heatable prepreg laying layer pre-compaction tool, a platform of the tool has a heating function and can heat prepreg, the temperature of a clean room is generally set at 25 ℃ when laying layers, the prepreg is harder and is not easy to lay layers, so that the problems of poor sticking rate between layers, bridge frame, air inclusion and the like are caused, the prepreg is preheated in the laying process by arranging the heating part in the platform, the defects can be overcome, and better laying quality is obtained; and the tool integrates two functions of preheating and paving layers and vacuum pre-compaction, so that the preparation efficiency can be greatly improved.
As a preferred embodiment, the heatable prepreg ply pre-compaction tool further comprises:
a groove 12 provided on the upper surface of the platform 10 and along the bottom edge of the upper sealing part 1;
and the sealing strip 8 is arranged in the groove 12.
The gap between the sealing gasket and the platform is sealed under the action of the sealing strip, so that the sealing performance during vacuum pumping is further ensured.
As a preferred embodiment, the heatable prepreg ply pre-compaction tool further comprises:
and the temperature control device is electrically connected with the heating part and is used for controlling the temperature of the heating part.
The heating temperature of the heating part is adjusted through the temperature control device, so that the preheating temperature of the tool can be adjusted, redundant resin flows through adjusting the temperature, and then the resin is led out through the glue absorption felt, so that the thickness of a product is controlled, the fiber content of the product is improved, and higher mechanical property is obtained.
In a preferred embodiment, the heating unit 11 has a layered structure, and is parallel to the upper surface of the stage 10. The heating uniformity of the platform can be ensured.
Further, the heating unit may be a structure in which a plurality of heating wires are arranged side by side, or may be a heating plate.
As a preferred embodiment, the upper seal portion 1 is an annular plate surrounding the edge of the seal gasket 2; the lower seal portion 9 is an annular plate having the same shape and size as the upper seal portion 1.
In a preferred embodiment, the clamping portion is a quick clamp. The upper sealing part and the lower sealing part can be clamped or loosened quickly, and the operation is convenient and quick.
In a preferred embodiment, the upper seal portion 1 and the lower seal portion 9 are made of an aluminum alloy. The aluminum alloy material is convenient for the quick clamp to apply clamping pressure.
As a preferred embodiment, the platform 10 is a fiber reinforced resin based composite material. The fiber reinforced resin matrix composite material can be used for conveniently manufacturing high-precision complex curved surfaces and is suitable for preparing prepreg paving layers of various shapes.
In a preferred embodiment, the sealing pad 2 is a silicone pad.
In a preferred embodiment, the lower sealing portion 9 is fixedly connected to the platform 10.
The whole process of laying and pre-compacting the prepreg by using the heatable prepreg laying and pre-compacting tool in the embodiment comprises the following steps: cleaning the composite material platform, and applying a release agent; connecting a vacuum pump and a vacuum meter through a vacuum nozzle, laying a sealing gasket on a platform, placing an upper sealing part above the sealing gasket and surrounding the edge of the sealing gasket, clamping the upper sealing part and a lower sealing part correspondingly arranged in position through a quick clamp so as to seal the peripheral edge of the sealing gasket, debugging a vacuum system, closing a vacuum switch after the debugging is finished, detaching the upper sealing part and the sealing gasket, and placing the sealing gasket on one side for standby; opening the heating part to start preheating the platform, and heating the heating part to a specified temperature through the temperature control device; paving a glue absorption felt 6 on the platform; laying the prepreg 5 on a rubber suction felt until the number of layers is specified, and scraping each layer by using a scraper blade; laying a demoulding cloth 4 on the prepreg; paving a breathable felt 3 on the demoulding cloth; laying a sealing gasket on the breathable felt, then placing an upper sealing part above the sealing gasket, and clamping the upper sealing part and a lower sealing part through a quick clamp; opening a vacuum switch to vacuumize until the designated number of the vacuum table is indicated; and (4) maintaining the pressure at the specified temperature for the specified time, opening the cover, taking out the prepreg, and finishing the layering and pre-compaction of the prepreg.
Example 2
The method for pre-compacting the prepreg paving layer in the embodiment is completed by using the heatable pre-compacting tool for prepreg paving layers in the embodiment 1, and comprises the following steps of:
1. cleaning the composite material platform, and applying a release agent;
2. connecting a vacuum pump and a vacuum meter through a vacuum nozzle, laying a sealing gasket on a platform, placing an upper sealing part above the sealing gasket and surrounding the edge of the sealing gasket, clamping the upper sealing part and a lower sealing part correspondingly arranged in position through a clamping part so as to seal the peripheral edge of the sealing gasket, debugging a vacuum system, closing a vacuum switch after debugging is finished, detaching the upper sealing part and the sealing gasket, and placing the sealing gasket on one side for standby;
3. opening the heating part to start preheating the platform, and heating the heating part to a specified temperature through the temperature control device;
4. paving a glue absorption felt on the platform;
5. spreading prepreg on a glue absorption felt until the number of layers is specified, and scraping each layer by using a scraper blade to be flat and solid;
6. laying a demolding cloth on the prepreg;
7. paving an air felt on the demoulding cloth;
8. laying a sealing gasket on the breathable felt, then placing an upper sealing part above the sealing gasket, and clamping the upper sealing part and a lower sealing part through a clamping part;
9. opening a vacuum switch to vacuumize until the designated number of the vacuum table is indicated;
10. and (3) maintaining the pressure for a specified time at a specified temperature, opening the cover, taking out the prepreg, and finishing the laying and pre-compaction of the prepreg.
In the method for pre-compacting the prepreg paving layer in the embodiment, the heatable pre-compacting tool for the prepreg paving layer in the embodiment 1 is adopted, a platform of the tool has a heating function, the prepreg can be heated, the temperature of a clean room is generally set at 25 ℃ when the prepreg is paved, the prepreg is hard and is not easy to pave, the sticking rate between layers is poor, a bridge frame and air inclusion problems are likely to occur, the prepreg is preheated through the heating part in the platform in the paving process, the defects can be overcome, and the better paving quality is obtained; the tool integrates two functions of preheating layering and vacuum pre-compaction, so that the preparation efficiency can be greatly improved; the tooling of embodiment 1 is also provided with a temperature control device, the preheating temperature of the tooling is adjustable by adjusting the heating temperature of the heating part through the temperature control device, redundant resin flows by adjusting the temperature, and then the resin is led out through the adhesive absorption felt, so that the thickness of a product is controlled, and the fiber content of the product is improved to obtain higher mechanical property.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The utility model provides a heatable prepreg shop-layup pre-compaction frock which characterized in that includes:
a platform for laying down prepreg;
the heating part is arranged in the platform and used for heating the platform;
the sealing gasket is arranged above the platform;
the upper sealing part is arranged above the sealing gasket and is arranged around the edge of the sealing gasket;
the lower sealing part is arranged below the platform and corresponds to the upper sealing part in position;
the clamping part is used for detachably clamping the upper sealing part and the lower sealing part to seal the edge of the sealing gasket;
and the vacuum nozzle is arranged on the upper surface of the platform, is positioned on the inner side of the area defined by the upper sealing part and is used for being connected with a vacuumizing device.
2. The heatable prepreg ply pre-compaction tool according to claim 1, further comprising:
the groove is arranged on the upper surface of the platform and is arranged along the bottom edge of the upper sealing part;
and the sealing strip is arranged in the groove.
3. The heatable prepreg ply pre-compaction tool according to claim 1, further comprising:
and the temperature control device is electrically connected with the heating part and is used for controlling the temperature of the heating part.
4. The heatable prepreg ply pre-compaction tool according to claim 1, characterized in that:
the upper sealing part and the lower sealing part are made of aluminum alloy materials.
5. The heatable prepreg ply pre-compaction tool according to claim 1, characterized in that:
the platform is made of fiber reinforced resin matrix composite.
6. The heatable prepreg layup pre-compaction tool of claim 1, wherein:
the sealing gasket is a silica gel gasket.
7. The heatable prepreg ply pre-compaction tool according to claim 1, characterized in that:
the clamping part is a quick clamp.
8. A method of pre-consolidating a prepreg layup, characterised in that it is carried out using a heatable prepreg layup pre-consolidation tool as claimed in any one of claims 1 to 7.
9. A method of pre-compacting a prepreg layup according to claim 8, comprising the steps of:
s1, preheating the platform through the heating part;
s2, paving a glue absorption felt on the platform;
s3, laying a prepreg on the adhesive absorption felt until the number of layers is specified;
s4, laying demolding cloth on the prepreg;
s5, paving an air felt on the demolding cloth;
s6, laying the sealing gasket on the breathable felt, then placing the upper sealing part above the sealing gasket, and clamping the upper sealing part and the lower sealing part through the clamping part;
s7, vacuumizing to a selected vacuum degree;
and S8, maintaining the pressure at the selected temperature for the selected time, and taking out the prepreg to finish the laying and pre-compaction of the prepreg.
10. The method of pre-consolidating a prepreg layup according to claim 9, further comprising, prior to step S1, commissioning a vacuum system, in particular comprising the steps of:
through vacuum nozzle connects vacuum pump, vacuum table, will again sealed pad is spread extremely on the platform, will go up the sealing and place in sealed pad top is and around sealed edge of filling up, through the clamping part will go up the sealing and correspond the setting with the position the lower sealing presss from both sides tightly, will sealed peripheral edge of filling up is sealed, then debugs vacuum system, closes after the debugging finishes vacuum system, demolishs sealed pad the upper seal portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210294274.0A CN114683576A (en) | 2022-03-24 | 2022-03-24 | Heatable prepreg laying-layer pre-compaction tool and laying-layer pre-compaction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210294274.0A CN114683576A (en) | 2022-03-24 | 2022-03-24 | Heatable prepreg laying-layer pre-compaction tool and laying-layer pre-compaction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114683576A true CN114683576A (en) | 2022-07-01 |
Family
ID=82140059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210294274.0A Pending CN114683576A (en) | 2022-03-24 | 2022-03-24 | Heatable prepreg laying-layer pre-compaction tool and laying-layer pre-compaction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114683576A (en) |
-
2022
- 2022-03-24 CN CN202210294274.0A patent/CN114683576A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110481059B (en) | Composite material foam sandwich structure and forming method thereof | |
| US4216047A (en) | No-bleed curing of composites | |
| CN110843234A (en) | Forming process method of unmanned aerial vehicle carbon fiber composite main beam | |
| CN110843235A (en) | Surface co-curing forming process method for honeycomb sandwich structure composite material | |
| CN105346100B (en) | A kind of preparation method of the big beam mould of wind electricity blade | |
| CN107283868A (en) | A kind of overall localization method of the rib for being molded carbon fibre composite Material Stiffened Panel | |
| CN104908339A (en) | Super-long net-size carbon-fiber composite panel molding method | |
| CN107471683A (en) | A kind of composite liquid is molded finished pieces with complex shapes method | |
| CN112873904B (en) | Tool manufacturing method for preventing air leakage of composite material forming tool | |
| CN113290884A (en) | Composite material plate shell with thickness gradient area and forming device and method thereof | |
| CN111745999A (en) | Appearance processing method of composite material part with R corners | |
| CN217144971U (en) | Heatable prepreg paving layer pre-compaction tool | |
| CN114683576A (en) | Heatable prepreg laying-layer pre-compaction tool and laying-layer pre-compaction method | |
| CN109203516A (en) | A kind of manufacturing method of wind electricity blade | |
| CN117774375A (en) | Composite material ring frame and forming method and device thereof | |
| CN110884168B (en) | Non-autoclave liquid forming device | |
| CN110103365B (en) | Application method of cloth-sandwiched diaphragm mold | |
| CN110757830B (en) | Thermal diaphragm forming method for hat-shaped stringer | |
| CN210011372U (en) | Epoxy heating glass steel mould | |
| CN114193791B (en) | Shell pouring technology for advanced forming of connecting angle | |
| CN113997601B (en) | Compensation pressurization method for V-shaped composite material part | |
| CN112606426B (en) | Curing furnace forming process for full-length composite wing beam | |
| CN107089018A (en) | The curing molding method of aeroscopic plate and preparation method and Material Stiffened Panel comprising it | |
| CN114103158A (en) | Forming method of special-shaped composite skirt of solid rocket engine | |
| CN106182806A (en) | The preparation method of fibre reinforced composites crossbeam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Gui Inventor after: Sun Chaoming Inventor after: Zhu Xiudi Inventor after: Hou Xin Inventor after: He Jing Inventor after: Niu Fangxu Inventor after: Yang Xiaolin Inventor after: Ma Lailai Inventor after: Yin Hang Inventor before: Liu Gui Inventor before: Sun Chaoming Inventor before: Zhu Xiudi Inventor before: Hou Xin Inventor before: He Jing Inventor before: Niu Fangxu Inventor before: Yang Xiaolin Inventor before: Ma Lailai Inventor before: Yin Hang |
|
| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230118 Address after: 102101 No.261 Kangxi Road, Badaling Economic Development Zone, Yanqing District, Beijing Applicant after: BEIJING COMPOSITE MATERIAL Co.,Ltd. Applicant after: China Building Materials Group Co.,Ltd. Address before: 102101 No.261 Kangxi Road, Badaling Economic Development Zone, Yanqing District, Beijing Applicant before: BEIJING COMPOSITE MATERIAL Co.,Ltd. |
|
| TA01 | Transfer of patent application right |