CN106378895A - Filling method of cavity - Google Patents
Filling method of cavity Download PDFInfo
- Publication number
- CN106378895A CN106378895A CN201611050686.0A CN201611050686A CN106378895A CN 106378895 A CN106378895 A CN 106378895A CN 201611050686 A CN201611050686 A CN 201611050686A CN 106378895 A CN106378895 A CN 106378895A
- Authority
- CN
- China
- Prior art keywords
- cavity
- packing material
- product
- vacuum tank
- detector
- 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
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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
-
- 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
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/22—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
Abstract
The invention provides a filling method of a cavity. According to the method, through vacuumizing and vibrating combined dynamic filling, uniform filling of a filling material in a detector cavity structure is achieved, it is guaranteed that internal parts of a product are fixed in structure, and the functional stability of a detector during practical work is guaranteed.
Description
Technical field
The present invention is a kind of fill method of cavity, belongs to forming processing technology field.
Background technology
For ensure product cavity Stability Analysis of Structures it is ensured that product stability under various circumstances, need in cavity to fill out
Charge closure material to be fixed.Fire detector is a kind of important detector in present generation aircraft fire prevention system, is mainly used in visiting
Fire alarm in survey aircraft engine nacelle, APU cabin and overheat condition.With the development of China's Aerobiz, to fire detector
Performance requirement more and more higher, detects temperature and increases to 500 DEG C by 200 DEG C, the change of detector applied environment requires it to possess
Preferably heat resistance., as the pith of detector, internal structure is complicated, including fixed support, pressure-sensitive portion for cavity portion
Part etc., cavity internal pore position need to be filled with packing material, to ensure to insulate between each part in detector, guarantee to make simultaneously
With resistance to vibration in environment etc..The packing material of domestic fire detector is mainly organic material at present, achievable inside cavity
Insulation, and quakeproof moisture-proof, but there is also a very serious problem, fill process is difficult to complete deaeration.For making filling material
Component uniformly, is generally repeatedly stirred material before filling, leads to introduce a large amount of bubbles in packing material, in detector cavity body
Complex structure, space is less, leads to the bubble in packing material to be difficult to cleared, after solidification in subsequently complicated use environment easily
Crack, be unfavorable for that inside configuration stress conducts, or even cause failure of insulation, affect product overall performance.Problem above is tight
Constrain the development of domestic fire detector again.
Content of the invention
The present invention is exactly directed to above-mentioned the deficiencies in the prior art and designs and provide a kind of fill method of cavity,
The method passes through evacuation and the dynamic fill process that combines of vibration, and overcoming cavity fill process cannot being stranded of deaeration completely
Difficult it is achieved that the bubble-free uniform filling of detector inside cavity.
To achieve these objectives, the present invention adopts the following technical scheme that：
The step of the fill method of this kind of cavity is as follows：
Step one, prepare packing material：Prepare packing material, preparation uniformly pasty state；
Step 2, ready packing material is poured slowly into cavity hatch, material level to be filled puts in place and no longer
During decline, stop embedding；
Step 3, the product opening upwards completing embedding are vertically placed in vacuum tank, the temperature in vacuum tank is room
Temperature, the vacuum in vacuum tank is -0.1MPa, carries out vacuumizing and defoaming to packing material in cavity, and the retention time is 20min；
Step 4, from vacuum tank take out product place on a vibration table, packing material in cavity is carried out vibrate deaeration,
Keep 20min；
Step 5, by complete vibrate deaeration after product stand more than 12h at room temperature；
After step 6, standing, product cavity is placed in heating furnace, packing material is solidified, cure parameter is according to filling out
Fill the requirement of material to determine.
Beneficial effects of the present invention：
1) inside cavity compact conformation, space is narrow and small, the dynamic fill method being combined with vibrational excitation by evacuation,
Cavity space can uniformly be filled by packing material, effectively prevent structure, functional lability problem that in cavity, gas bubbles left brings；
2) potting process is simple to operate, and reliability is high, is easy to production application.
Brief description
Fig. 1 is the structural representation of product cavity in embodiment
Specific embodiment
Below with reference to drawings and Examples, technical solution of the present invention is further described：
Referring to shown in accompanying drawing 1, using the present invention, detector cavity is filled with, this detector cavity includes shell cavity
1 and internal structure 2, contain space 3 in internal structure 2 it can be seen that this space more than 3 and narrow and small, carried out using the inventive method
The step of filling is as follows：
Step one, preparation packing material, by packing material preparation uniformly pasty state；
Step 2, ready packing material is poured slowly into detector cavity hatch, material level to be filled puts in place
And when no longer declining, stop embedding, this liquid level and range finder cavity hatch top also has certain distance；
Step 3, the detector cavity opening upwards completing embedding are vertically placed in vacuum tank, the temperature in vacuum tank
Spend for room temperature, the vacuum in vacuum tank is -0.1MPa, carries out vacuumizing and defoaming to packing material in cavity, the retention time is
20min；
Step 4, from vacuum tank take out detector cavity be placed on vibration table, packing material in cavity is shaken
Dynamic deaeration, keeps 20min it is ensured that deaeration is complete；
Step 5, by complete vibrate deaeration after detector cavity stand more than 12h at room temperature；
After step 6, standing, product cavity is placed in heating furnace, packing material is solidified, cure parameter is according to filling out
Fill the requirement of material to determine.
The inventive method compared with prior art, in cavity, dynamically filled out with what vibration combined by evacuation by packing material
Fill technique, realize detector inside cavity bubble-free and uniformly fill, provide reliable basis for improving detector job stability.
Claims (1)
1. a kind of fill method of cavity it is characterised in that：The step of the method is as follows：
Step one, prepare packing material：Prepare packing material, preparation uniformly pasty state；
Step 2, ready packing material is poured slowly into cavity hatch, material level to be filled puts in place and no longer declines
When, stop embedding；
Step 3, the product opening upwards completing embedding are vertically placed in vacuum tank, the temperature in vacuum tank is room temperature, very
Vacuum in empty van is -0.1MPa, carries out vacuumizing and defoaming to packing material in cavity, and the retention time is 20min；
Step 4, from vacuum tank take out product place on a vibration table, packing material in cavity is carried out vibrate deaeration, keep
20min；
Step 5, by complete vibrate deaeration after product stand more than 12h at room temperature；
After step 6, standing, product cavity is placed in heating furnace, packing material is solidified, cure parameter is according to filling material
The requirement of material is determining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050686.0A CN106378895A (en) | 2016-11-24 | 2016-11-24 | Filling method of cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611050686.0A CN106378895A (en) | 2016-11-24 | 2016-11-24 | Filling method of cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106378895A true CN106378895A (en) | 2017-02-08 |
Family
ID=57959366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611050686.0A Pending CN106378895A (en) | 2016-11-24 | 2016-11-24 | Filling method of cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106378895A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113870667A (en) * | 2021-09-30 | 2021-12-31 | 西安科技大学 | Novel similar material plane model frame of flexible size |
| CN116884883A (en) * | 2023-09-01 | 2023-10-13 | 山西创芯光电科技有限公司 | Method for reducing bubbles in infrared detector bottom filling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249700A (en) * | 2008-03-26 | 2008-08-27 | 上海大学 | Differential-pressure vacuum injection molding technique |
| CN105047727A (en) * | 2015-06-03 | 2015-11-11 | 重庆鹰谷光电有限公司 | Silica gel embedding technology for photoelectric detector with ceramic tube casing |
| CN205491456U (en) * | 2016-01-07 | 2016-08-17 | 广东生益科技股份有限公司 | Gu encapsulation is put |
-
2016
- 2016-11-24 CN CN201611050686.0A patent/CN106378895A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249700A (en) * | 2008-03-26 | 2008-08-27 | 上海大学 | Differential-pressure vacuum injection molding technique |
| CN105047727A (en) * | 2015-06-03 | 2015-11-11 | 重庆鹰谷光电有限公司 | Silica gel embedding technology for photoelectric detector with ceramic tube casing |
| CN205491456U (en) * | 2016-01-07 | 2016-08-17 | 广东生益科技股份有限公司 | Gu encapsulation is put |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113870667A (en) * | 2021-09-30 | 2021-12-31 | 西安科技大学 | Novel similar material plane model frame of flexible size |
| CN113870667B (en) * | 2021-09-30 | 2023-06-23 | 西安科技大学 | Deformable plane model frame made of similar materials in size |
| CN116884883A (en) * | 2023-09-01 | 2023-10-13 | 山西创芯光电科技有限公司 | Method for reducing bubbles in infrared detector bottom filling |
| CN116884883B (en) * | 2023-09-01 | 2023-11-14 | 山西创芯光电科技有限公司 | Method for reducing bubbles in infrared detector bottom filling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170208 |
|
| WD01 | Invention patent application deemed withdrawn after publication |