CN204867321U - Vacuum pressing and casting sand box - Google Patents
Vacuum pressing and casting sand box Download PDFInfo
- Publication number
- CN204867321U CN204867321U CN201520602391.4U CN201520602391U CN204867321U CN 204867321 U CN204867321 U CN 204867321U CN 201520602391 U CN201520602391 U CN 201520602391U CN 204867321 U CN204867321 U CN 204867321U
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- vacuum
- tube
- wallboard
- exhaust tube
- wallboards
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Abstract
The application discloses a vacuum pressing and casting sand box in foundary industry field, including wallboard, bottom plate, the evacuation connects, exhaust tube, vacuum tube, couple and rotary drum. The wallboard is four, and four wallboards constitute the box with bottom plate fixed connection, have set firmly outside relative two wallboards and have hung the handle. Vacuum tube is many and parallel arrangement on the bottom plate, the last aspirating hole that is equipped with of vacuum tube, exhaust tube setting vacuum tube on the bottom plate is the right angle and arranges, vacuum tube's both ends all are connected with the exhaust tube, and the one end that the evacuation connects is connected with the exhaust tube, and the other end stretches out outside the wallboard. Relative two are hung the last couple that is provided with respectively on relative two wallboards, and the one end of couple is fixed and is hung last what correspond, and it has the rotary drum to hang between the other end of couple, and it has the plastic film to twine on the rotary drum. Directly getting the plastic film from the rotary drum pull -up like this when the needs tectorial membrane and carrying out the tectorial membrane, the plastic film is got in the other places that do not need to take time again, and convenient and fast saves time.
Description
Technical field
The utility model relates to foundary industry field, is specifically related to a kind of overlay film evaporative pattern vacuum pressing and casting easily sandbox.
Background technology
Foundry goods is the metal forming object obtained by various casting method, namely the liquid metal smelted, preprepared casting mold is injected with cast, injection, suction or other casting method, after cooling after the following process means such as polishing, what obtained has definite shape, the object of size and performance.Foundry goods applicating history is long.Ancient times, people did and some life appliances with foundry goods.In modern age, foundry goods is mainly used as the blank of element part, some precision casting, also directly can be used as the parts of machine.General foundry goods all passes through sandbox casting, and common sandbox is open type, from cooling forming after pouring metal melt, the components interior density of such casting is even not, easily occur pore, the defect such as loose, the resistance to pressure of foundry goods is poor, and total quality is not high enough.
At present, in order to ensure the cast member better quality of producing, many employings founding casing with vacuum technology is cast, sandbox is put into by mould, the dry sand adding adhesive-free covers, and dry sand covers layer of plastic film again and seals, and builds the rear principle of suction that utilizes and makes the dry sand in sandbox produce negative pressure, make dry sand consolidation, extrusion die reaches a kind of technology improving casting quality.In order to ensure the security against fire of the complete of plastic foil and foundry in existing founding casing with vacuum process, need to be prepared in advance in the place away from foundry plastic foil, use is fetched from other places again when needs overlay film, taking of such plastic foil is very inconvenient, too increases the time cost of production.
Utility model content
The purpose of this utility model is to provide a kind of overlay film evaporative pattern vacuum pressing and casting easily sandbox.
For achieving the above object, basic technology scheme of the present utility model is as follows: a kind of vacuum pressing and casting sandbox, comprises wallboard, base plate, vacuumizing joint, exhaust tube, vacuum-pumping tube; Described wallboard is four, and four wallboards are fixedly connected with formation casing with base plate, is installed with and hangs handle outside relative two wallboards; Described vacuum-pumping tube is many and is set in parallel on base plate, and vacuum-pumping tube is provided with some aspirating holes; Described exhaust tube has two and is set in parallel on base plate, and two exhaust tubes and vacuum-pumping tube are at right angles arranged, the two ends of many described vacuum-pumping tubes are all communicated with exhaust tube; One end of vacuumizing joint is connected with an exhaust tube, and the other end reaches outside wallboard and is communicated with vavuum pump; Also comprise hook and rotating cylinder, described hook is two, and two hooks are separately positioned on relative two and hang upper; Hang with rotating cylinder between two hooks, described rotating cylinder is wound with plastic foil.
The principle of this programme: during casting, a part of dry sand is first filled in sandbox, then evaporative pattern is put into wherein, and then in sandbox, fill dry sand evaporative pattern is covered, then the plastic foil be wrapped on rotating cylinder pull-out is covered on sandbox, then make in sandbox, to form negative pressure by the vacuum extractor that is connected with vacuumizing joint dry sand is compressed real to carrying out vacuum pumping in sandbox, then cast.
The advantage of this programme is: on sandbox, mounting is wound with the rotating cylinder of plastic foil, directly pulls plastic foil from rotating cylinder carry out overlay film when needs overlay film, and plastic foil is got in the other places that do not need to take time again, convenient and swift, saves time.
Preferred version one, based on scheme one improve.Described wallboard be divided into inside panel and exterior panel two-layer, leave cavity between inside panel and exterior panel, described inside panel is provided with some aspirating holes; The two ends of described exhaust tube and the cavity connects between inside panel and exterior panel.Because existing sandbox aspirating hole quantity is single, when vacuumizing, die face pressure points to a point, and in mould, foundry goods pressure is uneven, Density inhomogeneity when causing foundry goods shaping, and compactness is inadequate, and performance does not reach requirement.This preferred version is also provided with aspirating hole on the sidewall of sandbox, to make when vacuumizing the even consolidation of dry sand in sandbox, and foundry goods surrounding and pressure uniform suffered below, even density when foundry goods is shaping, compactness is good, casting finished products better quality.
Preferred version two, based on the one of scheme or preferred version one improve.Sand control screens is had at the Surface coating of described vacuum-pumping tube and inside panel.Arrange sand control screens to prevent from dry sand in vacuum to be pumped by aspirating hole causing dry sand not consolidation, the low of inferior quality problem of casting quality.
Preferred version three, based on the one of scheme or preferred version one improve.Describedly hang circumference between handle and wallboard and be installed with four triangle reinforcements.By being arranged circumferentially four triangle reinforcements hanging between handle and wallboard, improve hang with the steadiness be connected between wallboard, improve the fastness of sandbox.
Accompanying drawing explanation
Fig. 1 is the top view of embodiment of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1.
Detailed description of the invention
Below by detailed description of the invention, the utility model is described in further detail:
Reference numeral in Figure of description comprises: wallboard 1, inside panel 101, exterior panel 102, exhaust tube 2, vacuum-pumping tube 3, sand control screens 4, and vacuumizing joint 5 hangs 6, hook 7, rotating cylinder 8, plastic foil 9, reinforcement 10.
Embodiment is substantially as shown in accompanying drawing 1, Fig. 2: a kind of vacuum pressing and casting sandbox, comprises wallboard 1, base plate, vacuumizing joint 5, exhaust tube 2, vacuum-pumping tube 3, hook 7 and rotating cylinder 8.Described wallboard 1 is four, and four wallboards 1 are fixedly connected with formation casing with base plate, is installed with and hangs 6 outside relative two wallboards 1; Described hanging is installed with four triangle reinforcements 10 hoop between 6 and wallboard 1.Described vacuum-pumping tube 3 is many and is set in parallel on base plate, and vacuum-pumping tube 3 is provided with some aspirating holes; Described exhaust tube 2 has two and is set in parallel on base plate, and two exhaust tubes 2 are at right angles arranged with vacuum-pumping tube 3, and the two ends of many described vacuum-pumping tubes 3 are all communicated with exhaust tube 2; One end of vacuumizing joint 5 is connected with an exhaust tube 2, and the other end reaches outside wallboard and is communicated with vavuum pump.Described wallboard 1 be divided into inside panel 101 and exterior panel 102 two-layer, leave cavity between inside panel 101 and exterior panel 102, described inside panel 101 is provided with some aspirating holes.The two ends of described exhaust tube 2 and the cavity connects between inside panel 101 and exterior panel 102.Sand control screens 4 is had at the Surface coating of described vacuum-pumping tube 2 and inside panel 101.Described hook 7 is two, and two hooks 7 are separately positioned on relative two and hang on 6.One end of two hooks 7 is fixed on corresponding hangs on 6, hangs with rotating cylinder 8, described rotating cylinder 8 is wound with plastic foil 9 between two other ends linking up with 7.
In the present embodiment, during casting, a part of dry sand is first filled in sandbox, then evaporative pattern is put into wherein, and then in sandbox, fill dry sand evaporative pattern is covered, then the plastic foil 9 be wrapped on rotating cylinder 8 pull-out is covered on sandbox, then make in sandbox, to form negative pressure by the vacuum extractor that is connected with vacuumizing joint 5 to carrying out vacuum pumping in sandbox dry sand is compressed reality, then cast.
Sandbox is mounted with rotating cylinder 8, rotating cylinder 8 is wound with plastic foil 9, when needs overlay film directly from turning, pulling plastic foil 9 and carrying out overlay film on 8, plastic foil 9 is got in the other places that do not need to take time again, convenient and swift, saves time.The sidewall of sandbox being also provided with aspirating hole, making when vacuumizing the even consolidation of dry sand in sandbox, foundry goods surrounding and pressure uniform suffered below, even density when foundry goods is shaping, compactness is good, casting finished products better quality.Arrange sand control screens 4 to prevent from dry sand in vacuum to be pumped by aspirating hole causing dry sand not consolidation, the low of inferior quality problem of casting quality.By hanging being arranged circumferentially four triangle reinforcements 10 between 6 and wallboard 1, improve the steadiness hung being connected between 6 with wallboard 1, improve the fastness of sandbox.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. record the content that may be used for explaining claim.
Claims (4)
1. a vacuum pressing and casting sandbox, comprises wallboard, base plate, vacuumizing joint, exhaust tube, vacuum-pumping tube; Described wallboard is four, and four wallboards are fixedly connected with formation casing with base plate, is installed with and hangs handle outside relative two wallboards; Described vacuum-pumping tube is many and is set in parallel on base plate, and vacuum-pumping tube is provided with some aspirating holes; Described exhaust tube has two and is set in parallel on base plate, and two exhaust tubes and vacuum-pumping tube are at right angles arranged, the two ends of many described vacuum-pumping tubes are all communicated with exhaust tube; One end of vacuumizing joint is connected with an exhaust tube, and the other end reaches outside wallboard and is communicated with vavuum pump; It is characterized in that, also comprise hook and rotating cylinder, described hook is two, and two hooks are separately positioned on relative two and hang upper; Hang with rotating cylinder between two hooks, described rotating cylinder is wound with plastic foil.
2. vacuum pressing and casting sandbox according to claim 1, is characterized in that, described wallboard be divided into inside panel and exterior panel two-layer, leave cavity between inside panel and exterior panel, described inside panel is provided with some aspirating holes; The two ends of described exhaust tube and the cavity connects between inside panel and exterior panel.
3. vacuum pressing and casting sandbox according to claim 2, is characterized in that, has sand control screens at the Surface coating of described vacuum-pumping tube and inside panel.
4., according to the arbitrary described vacuum pressing and casting sandbox of claims 1 to 3, it is characterized in that, described in hang hoop between handle and sidewall paneling and be installed with four triangle reinforcements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520602391.4U CN204867321U (en) | 2015-08-12 | 2015-08-12 | Vacuum pressing and casting sand box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520602391.4U CN204867321U (en) | 2015-08-12 | 2015-08-12 | Vacuum pressing and casting sand box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204867321U true CN204867321U (en) | 2015-12-16 |
Family
ID=54811749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520602391.4U Expired - Fee Related CN204867321U (en) | 2015-08-12 | 2015-08-12 | Vacuum pressing and casting sand box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204867321U (en) |
-
2015
- 2015-08-12 CN CN201520602391.4U patent/CN204867321U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |